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Administrative Procedures for the Executive Management Annual Incentive Compensation Plan under the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan As approved by the Compensation & Organization Committee on February 27, 2024 1. Administration. The Compensation & Organization Committee (the “Committee”) shall administer the Annual Incentive Compensation Plan (the “Plan”) under and pursuant to Sections 3.01 and 6.05 of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan (the “Omnibus Plan”). Unless otherwise defined herein, capitalized terms used herein shall have the meanings set forth in the Omnibus Plan. 2. Eligibility/Participation. (A) Eligibility. All Executive Officers (defined as those employees whose compensation is approved or reviewed by the Committee) of the Corporation, its Subsidiaries and affiliates are eligible to participate in the Plan upon designation by the Committee. (B) Participation. All Executive Officers of the Corporation, its Subsidiaries and affiliates designated via written notice as participants shall be participants in the Plan (“Participants”). (C) New Participants. An individual who was not a Participant on the first day of the Performance Period may, subject to the Committee’s discretion, become a Participant during the Performance Period, participating on a pro rata basis for the remaining portion of the period in which such Participant first becomes eligible to participate, but shall be ineligible to participate in this Plan for any portion of a year during which the Participant participates in any other cash incentive or bonus plan or program. (D) Rights. No Participant or other employee shall have any claim to be granted an Award under the Plan, and nothing contained in the Plan or any Award Agreement shall confer upon any Participant any right to continue in the employ of the Corporation, its Subsidiaries or affiliates or interfere in any way with the right of the Corporation, its Subsidiaries or affiliates to terminate a Participant's employment at any time. 3. Performance Period. Unless otherwise determined by the Committee, each Performance Period shall be a calendar year. 4. Incentive Award Determination. (A) Incentive Award Goals. Unless otherwise determined by the Committee, the Incentive Award Goals shall be the following objective measures: (1) Segment EBITDA and Total EBITDA. Segment EBITDA shall mean, for the Performance Period, EBITDA for each business unit (reportable segments and other businesses), excluding any gains or losses resulting from changes due to foreign exchange rate translation during the Performance Period, if applicable. Total EBITDA shall mean, for the Performance Period, total EBITDA for consolidated worldwide operations (including minority interests). EBITDA for consolidated worldwide operations (including minority interests) shall mean income from operations as reported in the consolidated statements of operations of United States Steel Corporation, plus or minus the effect of items not allocated to segments (excluding postretirement benefit expenses) as disclosed in the notes to the consolidated financial statements of United States Steel Corporation, plus depreciation, depletion and amortization as reported in the consolidated statements of cash flows of United States Steel Corporation.

-2- (2) Cash Conversion Cycle. The Cash Conversion Cycle (“CCC”) is calculated as Days Sales Outstanding plus Days Inventory Outstanding minus Days Payable Outstanding, which are defined as follows: (a) Days Sales Outstanding = ((September 30, 2024 Accounts Receivable, net + December 31, 2024 Accounts Receivable, net) / 2) / (4th Quarter 2024 Net Sales / 92) (b) Days Inventory Outstanding = ((September 30, 2024 Inventory + December 31, 2024 Inventory) / 2) / (4th Quarter 2024 Cost of Goods Sold / 92) (c) Days Payable Outstanding = ((September 30, 2024 Accounts Payable + December 31, 2024 Accounts Payable / 2) / (4th Quarter 2024 Cost of Goods Sold / 92) Accounts Receivable, net, Net Sales, Inventory, Accounts Payable and Cost of Goods Sold shall be determined in accordance with generally accepted accounting principles in the United States. (B) Adjustments. The Committee may make adjustments to the Incentive Award Goal calculations as determined by the Committee in its discretion. Unless otherwise determined by the Committee, the Incentive Award Goals will be adjusted as specified in Section 6. (C) Setting of Individual Incentive Targets and Payout Scales. (1) The Individual Incentive Target, defined as a percentage of base salary (expressed for the Participant, grade level and/or position), and the Payout Scales for all levels of performance goals shall be set by the Committee. (2) The Individual Incentive Target shall be calculated by multiplying the designated target percentage by the actual base salary earned by the Participant during the relevant portions of the Performance Period. (3) The Payout Scale applied to all performance goals based on the actual performance achieved will determine the payout percent applied in the Incentive Award Formula under Section 5, subject to negative adjustment by the Committee. (D) Assignment of Segment EBITDA Performance Goal to Participants. The Committee shall assign to each Participant a Segment EBITDA performance goal representing the reportable segment’s performance for which the Participant is responsible for driving. Participants who are “corporate staff” executives responsible for multiple segments may be assigned a Weighted Segment EBITDA performance goal, which shall be determined by the Committee and reflect a relative weighting of the segments for which the Participant is responsible. Certain Participants (i.e., the Chief Executive Officer) may be assigned a Total EBITDA performance goal. Should a Participant’s responsibilities change during the Performance Period with respect to the segments that are supported, the Committee shall assign the established Segment, Weighted Segment, or Total EBITDA performance goal to apply for the portion of the Performance Period related to the period for which the new responsibilities are effective. (E) Individual Performance. Individual performance relative to individual performance goals as specified in the Participant’s goal plan for the Performance Period will be assessed for each Participant by the Chief Executive Officer with input from the Participant’s direct manager following the end of the Performance Period. The Chief Executive Officer’s Individual

-3- Performance will be assessed by the Committee and approved by the full Board of Directors. The Individual Performance assessment will impact the Participant’s calculated award as set forth under the Incentive Award Calculation Formula, however, the assessment of Individual Performance does not preclude the Committee from exercising discretion and/or determining that no award should be paid to a Participant for a Performance Period. 5. Incentive Award Formula. (A) Incentive Award Formula. The award for each Participant shall be calculated as follows: (Individual Incentive Target x Total Corporate Payout Percent) + (Individual Incentive Target x Individual Performance Payout Percent). (B) Total Corporate Payout Percent. Unless otherwise determined by the Committee when establishing the Incentive Award Goals, the weighting assigned to each of the corporate performance measures shall be as follows: (1) Segment EBITDA/Total EBITDA. Segment EBITDA/Total EBITDA shall be weighted at 75% of the Total Corporate Payout Percent. (2) Cash Conversion Cycle. CCC shall be weighted at 25% of the Total Corporate Payout Percent. (C) Individual Performance Payout Percent. The Individual Performance Payout Percent may range from -15% (representing performance that is below expectations) to 30% (representing performance that far exceeds expectations). Notwithstanding the foregoing, the Committee may determine that an Incentive Award shall be forfeited for performance that does not meet expectations. (D) Maximum Award Level. The maximum award shall be 230% of the Individual Incentive Target value with achievement of the highest level of performance for the Segment EBITDA, Total EBITDA, CCC, and individual performance goals. 6. Incentive Goal Adjustments. (A) Adjustments to Segment EBITDA, Total EBITDA and CCC Goals. The following adjustment provisions shall be applied to the Segment EBITDA, Total EBITDA and CCC performance calculations (to the extent included in such amount): (1) exclude the gain or loss related to a business disposition or divestiture (whether or not completed during the Performance Period) and all amounts related to a permanent facility shutdown/closure in order to evaluate operational performance in the case of a business disposition, divestiture, or a permanent facility shutdown/closure, the incentive goal targets shall exclude amounts included in the Annual Operating Plan for the period of time after the date of the transaction and actual results will then be evaluated against the adjusted targets; (2) exclude the gain or loss related to an asset sale not made in the ordinary course of business; (3) exclude all amounts related to long-lived asset impairments; (4) exclude all amounts related to an acquisition or startup (defined as the startup of a previously closed facility or the startup of a new facility);

-4- (5) exclude all amounts related to workforce reductions and other restructuring charges; (6) exclude amounts not allocated to segments; (7) exclude all amounts related to changes in accounting standards and changes in law that affect reported results; (8) exclude significant amounts related to decisions made for the long-term benefit of the enterprise that will unfavorably impact short-term financial results (all amounts related to this adjustment must be specifically approved by the Committee); (9) provided, however, none of the above adjustments shall be made to the extent the events or occurrences relating to the adjustments are recognized and/or contemplated in the Corporation’s Annual Operating Plan and the incentive goal targets approved by the Committee for the relevant Performance Period; (10) provided, further, no adjustment pursuant to any adjustment category above shall be made to the extent the total adjustment for such category is less than $10 million, unless specifically identified as an item not allocated to segments; (11) provided, further, all the above adjustments shall be calculated in accordance with generally accepted accounting principles at the time of calculation to the extent the nature of the adjustment is addressed therein; (12) provided, further, none of the above adjustments shall be made to the extent the relevant data is not available; (13) provided, further, the Segment EBITDA, Total EBITDA and CCC calculations, including all adjustments thereto, shall be determined at the time the Committee makes its award decisions and in accordance with the reporting requirements applicable to the Corporation’s reports on Forms 10-K; and (14) provided, further, the above adjustments shall not limit the Committee’s authority to exercise negative discretion in calculating any related award. (B) Adjustments between Segments. Adjustments to the actual Segment EBITDA results shall be made for the purposes of measuring the achievement of performance goals in the event that business decisions are made during the year that are not anticipated in the Annual Operating Plan Target Segment EBITDA and that disadvantage the results of one business segment in favor of another segment for the benefit of overall Corporate objectives. The amount of the adjustment will be equal to the impact on the segment recognizing the detriment; (1) provided, however, no adjustment shall be made to the Segment EBITDA calculation to the extent the total adjustment related to the business decision is less than $5 million; (2) provided, further, the positive adjustment to the reporting segment which recognized the detriment in the actual results due to the business decision shall be offset by a corresponding negative adjustment to the reporting segment which recognized the benefit, unless the equal and offsetting adjustments do not properly reflect the economics of the transaction and the benefit provided to the enterprise as a whole;

-5- (3) provided, further, all adjustment between segments will be determined by the Vice President & Controller and will be reported to the Committee at the time final performance results are approved; and (4) provided, further, the adjustments between segments shall not limit the Committee’s authority to exercise negative discretion in calculating any related award. 7. Payout Mechanics. (A) Payout Determination. (1) Evaluation. The Committee shall determine the extent to which the Incentive Award Goals for the Performance Period were satisfied following the end of the relevant Performance Period and if satisfied, determine the amount of the Incentive Award payable to each Participant. (2) Calculation. (a) Rounding Performance Calculations. The calculation of actual performance for each performance measure in the Incentive Award Formula, as well as each component payout percentage in the Incentive Award Formula, shall be rounded to the nearest decimal place consistent with the number of decimal places approved by the Committee at the time it set the relevant target, rounding up in the case of 5 or more and rounding down in the case of 4 or less. (b) Interpolation. Interpolation will be used to determine an Incentive Award for performance that correlates to performance between the pre-determined Segment EBITDA, Total EBITDA and CCC Performance Goals. The interpolated payout percentages for Segment EBITDA, Total EBITDA and CCC shall be rounded independently to the nearest whole percentage point, rounding up in the case of 5 or more and rounding down in the case of 4 or less. (c) Maximum Award. No one Participant may receive more than $20 million in Incentive Awards for any one calendar year, as provided in the Omnibus Plan. (B) Form of Payout. (1) Cash and/or Common Stock. The Committee may determine to pay the awards in the form of cash or common stock, or any combination thereof, which determination may be made on a non-uniform basis among Participants. (2) Common Stock Awards. The determination to pay awards in the form of common stock shall be a determination to satisfy the award through shares available under the Omnibus Plan and treat such payment as an Other Stock-Based Award. (3) Award Unit Determination Procedure. If the Committee determines to pay all or a portion of an award in the form of common stock, the value of such award, or portion thereof, under this Plan shall be converted into a number of shares of common stock by dividing (i) the value of such award, or portion thereof, by (ii) the Common Stock Unit Value. The Common Stock Unit Value shall be equal to the Fair Market Value (as defined in Section 2.01(r) of the Omnibus Plan) of a share of common stock on the date of award (Date of Award). The Date of Award shall be established prospectively by the Committee

-6- at the time it determines the award, with the goal of setting the date close in proximity to the related payroll processing date for awards under the Omnibus Plan. Unless otherwise established by the Committee, the Date of Award shall be the day prior to the date the Corporation files its report on Form 10-K with the Securities and Exchange Commission for the period ending on the last date of the relevant Performance Period. (4) Netting of Common Stock Shares. To the extent permitted under the Omnibus Plan and unless otherwise determined by the Committee or an election with respect to a different medium of payment is offered to and elected by a Participant in accordance with procedures approved by the Company, the shares of common stock delivered in connection with any common stock award under this Plan shall be net of any tax withholding obligation. 8. Timing of Payments. Unless otherwise determined by the Committee in its discretion, payment of Annual Incentive Compensation, if any, under this Plan with respect to any Performance Period will be paid following the Committee’s determination of such Incentive Award and following the date the Corporation files its report on Form 10-K with the Securities and Exchange Commission for the period ending on the last date of relevant Performance Period; provided, however, the payment of any such award shall be paid on or before March 15 of the year following the end of the relevant calendar year Performance Period. 9. Termination of Employment. The following provisions apply in the case of a Participant’s termination of employment during the Performance Period: (A) Retirement, Death, or Disability. Following a Participant’s Retirement, Death or Disability, a prorated value of such Participant’s Award may be awarded by the Committee based upon the base salary earned during the Performance Period; provided that (i) such Award is calculated and delivered following the relevant Performance Period, (ii) the performance goals are achieved, (iii) unless otherwise determined by the Committee, the Participant is employed for at least six (6) months during the Performance Period, and (iv) the Committee retains its negative discretion with respect to such awards. (1) Retirement. Retirement shall mean, for all purposes under the Plan, the applicable Participant’s termination of employment that constitutes a separation from service under Section 409A of the Code after having (i) completed 30 years of service, (ii) attained age 60 with five (5) years of service or (iii) attained age 65; provided, however, such term does not include, unless the Committee consents with knowledge of the specific facts, retirement under circumstances in which the Participant accepts employment with a company that owns, or is owned by, a business that competes with the Corporation, or its Subsidiaries or affiliates. Further, to the extent necessary under applicable local law, Retirement may have such other meaning adopted by the Committee and set forth in the applicable Award notice. (2) Disability. Disability shall mean the Participant is “Disabled” as defined in Section 2.01(n) of the Omnibus Plan. (B) Resignation and Other Terminations. Following a Participant’s resignation or other termination of employment (including but not limited to any voluntary termination by the Participant or any termination by the Corporation for Cause or without Cause), all pending Incentive Awards are forfeited. 10. Forfeiture and Repayment. The Committee may determine that an Incentive Award shall be forfeited and/or any value received from the Incentive Award shall be repaid to the Corporation pursuant to any recoupment policies, rules or regulations in effect at the time of the Incentive Award.

ROCE Performance Share Award - February 2024 United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Performance Share Award Grant Agreement United States Steel Corporation, a Delaware corporation (herein called the “Corporation”), grants to the employee of the employing company identified below (the “Participant”) a Performance Share Award representing the right to receive a specified number of shares of the common stock of the Corporation (“Shares”) set forth below, which right, if payable, shall be paid in Shares: Name of Participant: PARTICIPANT NAME Name of Employing Company (The company recognized by the Corporation on Date Hereof: as employing the Participant) Target Number of Shares Subject to Award: # SHARES Maximum Number of Shares Subject to Award: (Two times the Number of Shares Subject to the Award) Performance Period: January 1, 2024 through December 31, 2026 Performance Goals: See Exhibit A Date of Grant: GRANT DATE By accepting this Award in any manner and within the time period prescribed by the Corporation, the Participant agrees that (1) this Performance Share Award is granted under and governed by the terms and conditions of the Corporation’s 2016 Omnibus Incentive Compensation Plan, as amended from time to time (the “Plan”), and the provisions of this Performance Share Award Grant Agreement, including (i) the Terms and Conditions contained herein, (ii) the Performance Goals set forth in Exhibit A attached hereto, (iii) if applicable to the Participant under Section 11 hereof, the Confidentiality and Proprietary Rights Agreement attached as Exhibit B and the Non-Solicitation and Non-Competition Agreement attached as Exhibit C, and (iv) the special provisions for the Participant’s country of residence, if any, attached hereto as Exhibit D (collectively, the “Agreement”), (2) he or she has reviewed the Plan and the Agreement in their entirety, and (3) he or she has had an opportunity to obtain the advice of counsel prior to accepting this Award and fully understands all provisions of the Plan and the Agreement. United States Steel Corporation By:_______________________ Authorized Officer Terms and Conditions 1. Grant of Performance Share Award: The Performance Period for purposes of determining whether the Performance Goals have been met shall be the three-year Performance Period specified herein. The Performance Goals for purposes of determining whether, and the extent to which, the Performance Share Award is earned and payable are set forth in Exhibit A to this Agreement. Subject to the provisions of this Agreement, the Performance Share Award shall become payable, if vested, following the Committee’s determination and certification after the end of the Performance Period, as to whether and the extent to which the Performance Goals have been achieved; provided that the Committee retains no discretion to reduce or increase Performance Share Awards that become payable as a result of performance measured against the Performance Goals. 2. Payment of Award: If and to the extent the Performance Share Award is vested, earned and payable, the Corporation shall cause a stock certificate to be issued in the Participant’s name, for no cash consideration, for the number of shares of common stock of the Corporation determined by the Committee to be payable pursuant to Section 1 hereof. Payment shall be made following the end of the Performance Period and certification by the Committee, and in no event more than two and one-half months following the end of the calendar year in which the Performance Period ends, except as otherwise provided in Section 12. No dividends or dividend equivalents shall be payable with respect to the Performance Share Award before the Performance Goal has been achieved and the Performance Share Award has been determined to be earned. 3. Transferability: The Participant shall not sell, transfer, assign, pledge or otherwise encumber or dispose of any portion of the Performance Share Award and the right to receive Shares, and any attempt to sell, transfer, assign, pledge or encumber any portion of the Shares prior to the payment, if at all, of a stock certificate in the name of the Participant shall have no effect, regardless of whether voluntary, involuntary, by operation of law or otherwise. 4. Change in Control: Notwithstanding anything to the contrary stated herein, in the case of a Change in Control of the Corporation, (a) the Performance Period shall automatically end on the business day immediately preceding the closing date of the Change in Control, (b) the actual performance for the abbreviated Performance Period calculated as set forth below shall be measured against the established Performance Goals, the performance criteria shall be deemed satisfied only to the extent the actual performance was achieved (the “Achieved Performance Share Award”), and the balance of the Performance Share Award, if any, shall be forfeited, and (c) the Achieved Performance Share Award shall remain subject to forfeiture until the third anniversary of the Date of Grant of this Performance Share Award if the Participant’s employment is terminated after the Change in Control but before the third anniversary of the Date of Grant; provided, however, notwithstanding Section 5, (i) if the Participant’s employment is terminated by the Corporation other than for Cause or is terminated voluntarily by the Participant for Good Reason in the case of participants designated as executive management at the time of the Change in Control (“Executive Management”), within 24 months following a Change in Control, then, except as otherwise determined by the Corporation if the Participant is not Executive Management, the Achieved Performance Share Award shall not be forfeited upon such Termination; rather,

-2- the Achieved Performance Share Award shall vest immediately upon the termination, (ii) if the Participant’s employment is terminated by reason of death, due to the Participant becoming Disabled, or following attainment of Normal Retirement Age, then the Achieved Performance Share Award shall not be forfeited upon such Termination; rather, the Achieved Performance Share Award shall vest immediately upon such Termination; and (iii) if the Participant’s employment is terminated following attainment of Early Retirement Age, then a prorated portion of the Achieved Performance Share Award will vest, based upon the number of complete months worked during the original Performance Period in relation to the number of whole months in the original Performance Period and the remainder shall be forfeited. The Corporation’s actual performance for the abbreviated Performance Period shall be calculated as follows: completed measurement periods shall be measured against the established Performance Goals and the performance criteria shall be deemed satisfied only to the extent the actual performance was achieved; and incomplete measurement periods shall be deemed achieved at the established target Performance Goal. 5. Vesting: To vest in this Performance Share Award, the Participant must continue as an active employee of an Employing Company during the Performance Period and through the date on which the Committee certifies whether the Performance Goal relating to the Performance Period has been achieved, subject to the following: (a) In the event of a Termination of the Participant’s employment due to death or becoming Disabled, the Performance Share Award will become vested in accordance with the following Schedule: Termination Vested Parentage During First Year of Performance Period 0% During Second Year of Performance Period 50% During Third Year of Performance Period 100% (b) The Performance Share Award will immediately vest upon the Participant’s attainment of Normal Retirement Age. (c) The Performance Share Award will vest based upon the number of complete months worked by the Participant during the Performance Period, in the event of a Participant’s termination of employment during the Performance Period on or after attainment of Early Retirement Age or under circumstances which would qualify the Participant for benefits under a severance plan of the Corporation, including the execution of any general release required under the severance plan. (d) The Performance Share Award will be forfeited automatically upon any other Termination of employment (including but not limited to any voluntary termination by the Participant or any Termination by the Corporation or the Employing Company for Cause or without Cause) prior to the date on which the Committee certifies whether the Performance Goal relating to the Performance Period has been achieved, such forfeiture being without consideration or without further action required of the Corporation or Employing Company. 6. Termination of Employment: Except as provided in Sections 4 and 5 of this Agreement, notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in the event of the Participant’s Termination of employment, regardless of the reason for such Termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any, the Participant’s rights under this Agreement will terminate effective as of the date that the Participant is no longer actively employed by an Employing Company and will not be extended by any notice period. For purposes of the Performance Share Award, active employment does not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any. The Committee shall have the exclusive discretion to determine when the Participant is no longer actively employed for purposes of the Performance Share Award. 7. Adjustments and Recoupment: The Target and Maximum number of Shares are subject to adjustment as provided in Section 8 of the Plan. The Participant shall be notified of such adjustment and such adjustment shall be binding upon the Corporation and the Participant. Consistent with Section 8 of this Agreement, this Award shall be administered in accordance with, and is subject to, any recoupment policies and provisions prescribed by the Plan at the time of such Award; notwithstanding the foregoing, this Award shall be subject to all recoupment provisions required by law from time to time. In its sole discretion, the Committee shall have the authority to amend, waive or apply the terms of any recoupment policies or provisions not required by law, in whole or in part, to the extent necessary or advisable to comply with applicable local laws, as determined by the Committee. 8. Interpretation and Amendments: This Award and the issuance, vesting and delivery of Shares are subject to, and shall be administered in accordance with, the provisions of the Plan. No amendment of this Agreement or the Plan may, without the consent of the Participant, affect the rights of the Participant under this Award in a materially adverse manner. For purposes of the foregoing sentence, an amendment that affects the tax treatment of the Performance Share Award or that is necessary to comply with securities or other laws applicable to the issuance of Shares shall not be considered as affecting the Participant’s rights in a materially adverse manner. In the event of a conflict between the Plan and this Agreement, unless this Agreement specifies otherwise, the Plan shall control. All capitalized terms not otherwise defined herein shall have the meaning assigned to such terms in the Plan. 9. Compliance with Laws: The obligations of the Corporation and the rights of the Participant are subject to all applicable laws, rules and regulations including, without limitation, the U.S. Securities Exchange Act of 1934, as amended; the U.S. Securities Act of 1933, as amended; the U.S. Internal Revenue Code of 1986, as amended; and any other applicable laws, whether U.S. origin or otherwise. No Shares will be issued or delivered to the Participant under the Plan unless and until there has been compliance with such applicable laws. 10. Acceptance of Award: This Award is contingent on the Participant’s acceptance of the Award in the manner and within the time period established by the Corporation. The Award shall be forfeited without further action by the Corporation and shall not be payable if it is not accepted by the Participant in the manner and within the time period established by the Corporation. 11. Confidentiality, Non-Solicitation and Non-Competition: If a Participant is employed in the United States in a position below the rank of Senior Vice President of the Corporation on the Date of Grant, then the Participant agrees and understands that (a) by accepting this Award the Participant shall be bound by and subject to the terms of the Confidentiality and Proprietary Rights Agreement attached to this Agreement and incorporated herein as Exhibit B and, to the extent permitted by law, the terms and conditions of the Non-Solicitation and Non-Competition Agreement attached to this Agreement and incorporated herein as Exhibit C; provided, however, that the Non-Solicitation and Non-Competition Agreement shall not be applicable to those Participants employed by Big River Steel (“BRS”) or Vice Presidents of the Corporation who are subject to similar noncompete provisions in prior agreements outside of the Plan with BRS or the Corporation, as applicable, and (b) notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in addition to any other remedies available at law, if unvested, the Award will be forfeited immediately and without further action by the Corporation in the event the Participant fails to comply with or breaches any of the obligations and restrictions under Exhibits B or C of this Agreement.

-3- 12. Taxes/Section 409A: The Participant acknowledges that, regardless of any action taken by the Corporation or the Employing Company, the ultimate liability for any or all income tax, social security, payroll tax, payment on account or other tax-related withholding or liability in connection with any aspect of the Performance Share Award, including the grant, vesting, or settlement of the Performance Share Award or the subsequent sale of Shares (“Tax-Related Items”) is and remains his or her responsibility and may exceed the amount withheld by the Corporation or the Employing Company. Furthermore, the Participant acknowledges that the Corporation and/or the Employing Company (a) make no representations or undertakings regarding the treatment of any Tax-Related Items; and (b) do not commit to and are under no obligation to structure the terms of the grant of the Performance Share Award or any aspect of the Participant’s participation in the Plan to reduce or eliminate his or her liability for Tax-Related Items or to achieve any particular tax result. Further, if the Participant has become subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable event, the Participant acknowledges that the Corporation and/or the Employing Company (or former Employing Company, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction. Prior to the relevant taxable event, the Participant shall pay or make adequate arrangements satisfactory to the Corporation and/or the Employing Company to satisfy all Tax-Related Items of the Corporation and/or the Employing Company. In this regard, the Participant shall pay any Tax-Related Items directly to the Corporation or the Employing Company in cash upon request. In addition, the Participant authorizes the Corporation and/or the Employing Company, or their respective agents, at their discretion, to satisfy the obligations with regard to all applicable Tax-Related Items by one or a combination of the following methods: (1) withholding from Participant’s wages or other cash compensation paid to Participant by the Corporation and/or the Employing Company; (2) withholding from proceeds of the sale of Shares issued upon payment of the Performance Share Award either through a voluntary sale or through a mandatory sale arranged by the Corporation (on the Participant’s behalf pursuant to this authorization) through such means as the Corporation may determine in its sole discretion (whether through a broker or otherwise); or (3) withholding in Shares to be issued upon payment of the Performance Share Award. If the Corporation gives the Participant the power to choose the withholding method, and the Participant does not make a choice, then the Corporation will at its discretion withhold in Shares as stated in alternative (3) herein. To avoid negative accounting treatment, the Corporation may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates. If the Corporation withholds at a rate other than the minimum statutory rate, such as the maximum withholding rate, then the refund of any over-withheld amount shall be paid in cash and the Participant will have no entitlement to the Common Stock equivalent. If the Tax-Related Items are satisfied by withholding in Shares issuable upon vesting of the Performance Share Award, for tax purposes, the Participant is deemed to have been issued the full number of Shares subject to the Performance Share Award, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax-Related Items. Finally, the Participant shall pay to the Corporation or the Employing Company any amount of Tax-Related Items due as a result of any aspect of the Participant’s participation in the Plan. The Participant understands that no Shares or proceeds from the sale of Shares shall be delivered to Participant, notwithstanding the vesting of the Performance Share Award, unless and until the Participant shall have satisfied any obligation for Tax-Related Items with respect thereto. Notwithstanding anything in this Section 12 to the contrary, if the Performance Share Award is considered nonqualified deferred compensation, the fair market value of the shares withheld together with the amount of cash withheld may not exceed the liability for Tax-Related Items. It is the intent that the vesting or the payments of this Performance Share Award shall either qualify for exemption from or comply with the requirements of Section 409A of the Code (“Section 409A”), and any ambiguities herein will be interpreted to so comply. The Corporation reserves the right, to the extent the Corporation deems necessary or advisable in its sole discretion, to unilaterally amend or modify this Agreement as may be necessary to ensure that all vesting or settlements provided under this Agreement are made in a manner that qualifies for exemption from or complies with Section 409A; provided, however, that the Corporation makes no representation that the vesting or settlement of the Performance Share Award provided under this Agreement will be exempt from Section 409A and makes no undertaking to preclude Section 409A from applying to the vesting or settlement of Performance Share Awards provided under this Agreement. In the event that any payment to a U.S. taxpayer or Participant otherwise subject to U.S. taxation, with respect to a Performance Share Award is considered to be based upon separation from service, and not compensation the Participant could receive without separating from service, then such amounts may not be paid until the first business day of the seventh month following the date of the Participant’s termination if the Participant is a “specified employee” under Section 409A of the Code upon his separation from service. 13. Nature of the Award: Nothing herein shall be construed as giving Participant any right to be retained in the employ of an Employing Company or affect any right that the Employing Company may have to terminate the employment of such Participant. Further, by accepting this Performance Share Award, the Participant acknowledges that: (a) the Plan is established voluntarily by the Corporation, it is discretionary in nature and may be modified, amended, suspended or terminated by the Corporation at any time, to the extent permitted by its terms; (b) the grant of the Performance Share Award is voluntary and occasional and does not create any contractual or other right to receive future Performance Awards, or benefits in lieu of Performance Awards, even if Performance Awards have been granted in the past; (c) all decisions with respect to future Performance Award grants, if any, will be at the sole discretion of the Committee; (d) the Participant is voluntarily participating in the Plan; (e) the Performance Share Award and the Shares subject to the Performance Share Award are extraordinary items which do not constitute compensation of any kind for services of any kind rendered to the Corporation or to the Employing Company, and which are outside the scope of the Participant’s employment contract, if any; (f) the Performance Share Award and the Shares subject to the Performance Share Award are not part of normal or expected compensation or salary for purposes of calculating any severance, resignation, termination, dismissal, redundancy, end-of-service payments, bonuses, long- service awards, pension or retirement benefits or similar payments and in no event should be considered as compensation for, or relating in any way to, past services for the Corporation or the Employing Company or any Subsidiary or affiliate of the Corporation; (g) the Performance Share Award and the Shares subject to the Performance Share Award are not intended to replace any pension rights or compensation; (h) the grant of the Performance Share Award will not be interpreted to form an employment contract or relationship with the Corporation, the Employing Company or any Subsidiary or affiliate of the Corporation; (i) the future value of the Shares underlying the Performance Share Award is unknown, indeterminable and cannot be predicted with certainty; (j) no claim or entitlement to compensation or damages arises from forfeiture of the Performance Share Award resulting from termination of the Participant’s employment by the Corporation or the Employing Company (for any reason whether or not in breach of applicable labor laws or the terms of the Participant’s employment agreement, if any), and in consideration of the grant of the Performance Share Award to which the Participant is not otherwise entitled, the Participant irrevocably agrees never to institute any claim against the Corporation or the Employing Company, waives his or her ability, if any, to bring any such claim, and releases the Corporation and the Employing Company from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by

-4- participating in the Plan, the Participant shall be deemed irrevocably to have agreed not to pursue such claim and agreed to execute any and all documents necessary to request dismissal or withdrawal of such claim; (k) it is the Participant’s sole responsibility to investigate and comply with any applicable exchange control laws in connection with the issuance and delivery of Shares pursuant to the vesting of the Performance Share Award; (l) the Corporation and the Employing Company are not providing any tax, legal or financial advice, nor are the Corporation or the Employing Company making any recommendations regarding the Participant’s participation in the Plan or the Participant’s acquisition or sale of the Shares underlying the Performance Share Award; (m) the Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan; (n) unless otherwise provided in the Plan or by the Corporation in its discretion, the Performance Share Award and the benefits evidenced by this Agreement do not create any entitlement to have the Performance Share Award or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares of the Corporation; and (o) the following provisions apply only if the Participant is providing services outside the United States: (i) the Performance Share Award and Shares underlying the Performance Share Award are not part of normal or expected compensation for any purpose; and (ii) the Participant acknowledges and agrees that neither the Corporation nor the Employing Company shall be liable for any foreign exchange rate fluctuation between the local currency and the United States Dollar that may affect the value of the Performance Share Award or 8of any amounts due to the Participant pursuant to the settlement of the Performance Share Award or the subsequent sale of any Shares acquired upon settlement. 14. Data Privacy: (a) The Participant hereby explicitly, unambiguously and voluntarily consents to the collection, use, disclosure and transfer, in electronic or other form, of his or her personal data as described in this Agreement and any other Performance Share Award materials (“Data”) by and among, as applicable, any Employing Company and the Corporation for the exclusive purpose of implementing, administering, and managing his or her participation in the Plan. (b) The Participant understands that any Employing Company and the Corporation may collect, maintain, process and disclose certain personal information about him or her, including, but not limited to, his or her name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any Shares or directorships held in the Corporation, details of all equity awards or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, for the exclusive purpose of implementing, administering, and managing the Plan. (c) The Participant acknowledges that Data will be transferred to any broker as designated by the Corporation and/or one or more stock plan service provider(s) selected by the Corporation, which may assist the Corporation with the implementation, administration and management of the Plan. The Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipient’s country (e.g., the United States) may have different, including less stringent, data privacy laws and protections than his or her country. The Participant understands that if he or she resides outside the United States, he or she may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Participant authorizes the Corporation and any other possible recipients that may assist the Corporation (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purposes of implementing, administering and managing his or her participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit any Shares acquired upon vesting of the Performance Share Awards. (d) The Participant understands that Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan, including to maintain records regarding participation. The Participant understands that if he or she resides in certain jurisdictions, to the extent required by applicable laws, he or she may, at any time, request access to Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents given by accepting these Performance Share Awards, in any case without cost, by contacting in writing his or her local human resources representative. Further, the Participant understands that he or she is providing these consents on a purely voluntary basis. If the Participant does not consent or if he or she later seeks to revoke his or her consent, his or her engagement as a service provider with any Employing Company and the Corporation will not be adversely affected; the only consequence of refusing or withdrawing his or her consent is that the Corporation will not be able to grant him or her Performance Share Awards under the Plan or administer or maintain Performance Share Awards. Therefore, the Participant understands that refusing or withdrawing his or her consent may affect his or her ability to participate in the Plan (including the right to retain these Performance Share Awards). The Participant understands that he or she may contact his or her local human resources representative for more information on the consequences of his or her refusal to consent or withdrawal of consent. 15. Electronic Delivery: The Corporation may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means or request the Participant’s consent to participate in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through any online or electronic system established and maintained by the Corporation or another third party designated by the Corporation. Such means of electronic delivery may include but do not necessarily include the delivery of a link to a Corporation intranet or the Internet site of a third party involved in administering the Plan, the delivery of the document via e-mail or such other means of electronic delivery specified by the Corporation. The Participant consents to the electronic delivery of the Plan documents and the Agreement. The Participant acknowledges that he or she may receive from the Corporation a paper copy of any documents delivered electronically at no cost to the Participant by contacting the Corporation by telephone or in writing. The Participant further acknowledges that the Participant will be provided with a paper copy of any documents if the attempted electronic delivery of such documents fails. Similarly, the Participant understands that the Participant must provide the Corporation or any designated third-party administrator with a paper copy of any documents if the attempted electronic delivery of such documents fails. The Participant may revoke his or her consent to the electronic delivery of documents or may change the electronic mail address to which such documents are to be delivered (if the Participant has provided an electronic mail address) at any time by notifying the Corporation of such revoked consent or revised e- mail address by telephone, postal service or electronic mail. The Participant agrees that the foregoing online or electronic participation in the Plan shall have the same force and effect as documentation executed in hardcopy written form. Finally, the Participant understands that he or she is not required to consent to electronic delivery of documents.

-5- 16. Severability: In the event that any provision in this Agreement is held invalid or unenforceable, such provision will be severable from, and such invalidity or unenforceability will not be construed to have any effect on, the remaining provisions of this Agreement. 17. Language: If the Participant has received this Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 18. Governing Law and Venue: This Agreement shall be construed and enforced in accordance with the laws of the Commonwealth of Pennsylvania, without regard to the conflicts of laws thereof. For purposes of litigating any dispute that arises under this grant or this Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania, and agree that such litigation shall be conducted in the courts of Allegheny County, Pennsylvania, or the federal courts for the United States for the Western District of Pennsylvania, where this grant is made and/or to be performed. 19. Exhibit D: Notwithstanding any provisions in this Agreement, the Performance Share Award shall be subject to any special terms and conditions set forth in Exhibit D to this Agreement for the Participant’s country. Moreover, if the Participant relocates to one of the countries included in Exhibit D, the special terms and conditions for such country will apply to the Participant, to the extent the Corporation determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. 20. Insider Trading Restrictions/Market Abuse Laws: The Participant acknowledges that, depending on the Participant's country of residence, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect the Participant's ability to acquire or sell Shares or rights to Shares (e.g., Performance Share Awards) under the Plan during such times as the Participant is considered to have “inside information” regarding the Corporation (as defined by any applicable laws in the Participant's country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable insider trading policy maintained by the Corporation. The Participant acknowledges that it is the Participant's responsibility to comply with any applicable restrictions, and the Participant is advised to speak to his or her personal advisor on this matter. 21. Imposition of Other Requirements: The Corporation reserves the right to impose other requirements on the Participant’s participation in the Plan, on the Performance Share Award and on any Shares acquired under the Plan, to the extent the Corporation determines it is necessary or advisable in order to comply with local law, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing. 22. Headings: Headings of paragraphs and sections used in this Agreement are for convenience only and are not part of this Agreement, and must not be used in construing it. 23. Waiver: The Participant acknowledges that a waiver by the Corporation of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by the Participant. 24. No Advice Regarding Grant: The Corporation is not providing any tax, legal or financial advice, nor is the Corporation making any recommendations or assessments regarding the Participant’s participation in the Plan, or his or her acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan. 25. Definitions: In addition to the capitalized terms defined in the Plan, the following terms as used herein shall have the following meanings when used with initial capital letters: (a) “Early Retirement Age” shall mean the Participant’s (1) attainment of age 55 and completion of ten (10) years of service with the Corporation or an Employing Company, or (2) completion of thirty (30) years of service with the Corporation or an Employing Company. (b) “Normal Retirement Age” shall mean, with respect only to a Participant who is a U.S. employee and is not a participant in the United States Steel Corporation Supplemental Pension Program, the later of (1) six (6) months following the Date of Grant, or (2) the earlier of (i) attainment of age 65, or (ii) attainment or age 60 and completion of five (5) years of service with the Corporation or an Employing Company. (c) “Termination” shall mean the applicable employee’s termination of employment. For purposes of this Agreement, (i) for U.S. taxpayers, Termination and words of similar effect shall be construed consistent with a “separation from service” under Section 409A of the Code to the extent required by Section 409A of the Code, and (ii) for non-U.S. taxpayers, Termination and words of similar effect shall mean that the Participant is no longer actively employed by an Employing Company, without regard to any notice period (i.e., active employment would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any).

-6- EXHIBIT A Performance Goals for the Performance Period Threshold Target Maximum Performance Goal Return on Capital Employed (ROCE) Payment Levels % of Target Amount 0% 50% 100% 200% Payout Calculation. (a) The Corporation’s performance shall be measured over the Performance Period and the payout determined as follows: (i) performance shall be measured each calendar year in the three-year Performance Period with each year representing 20% of the total Award, and (ii) performance shall be measured over the full three-year Performance Period with the full three-year period representing 40% of the total Award. All payouts shall be made following the end of the Performance Period in accordance with Section 2 of the Agreement. (b) Interpolation will be used to determine actual awards for performance that correlates to an award between threshold and target or target and maximum award levels. (c) In calculating the dollar value to be awarded, the Corporation’s annual ROCE for each year of the Performance Period shall be rounded to the nearest decimal place consistent with the number of decimal places approved by the Committee at the time it set the relevant target, rounding up in the case of 5 or more and rounding down in the case of 4 or less. The related payout rate also shall be calculated to the nearest hundredth place using the same rounding procedure. Additionally, the dollar value awarded shall be rounded to the nearest whole dollar. Return on Capital Employed. Return on Capital Employed (ROCE) shall mean the Corporation’s income or loss from consolidated worldwide operations (including minority interests), divided by consolidated worldwide capital employed (including minority interests) expressed as a percentage. Income or loss from consolidated worldwide operations (including minority interests) shall mean income or loss from operations as reported in the Corporation’s consolidated statement of operations for each calendar year of the Performance Period. Capital employed shall be calculated by using the average of the opening balance at the commencement of each calendar year of the Performance Period, and the balances at the end of each quarter during each calendar year of the Performance Period, of the sum of net fixed assets, inventories, accounts receivable, and equity method investments, less accounts payable. For purposes of calculating ROCE for the full three-year Performance Period (40% of the total Award), ROCE shall be determined as the simple average of the Corporation’s ROCE for each calendar year in the three-year Performance Period. Adjustments to Return on Capital Employed. For purposes of calculating ROCE for a calendar year within the Performance Period, the following principles shall apply: if income or loss related to an asset is included in the numerator for any portion of the calendar year within the Performance Period, the related asset’s capital employed shall be included in the denominator for the same portion of the calendar year within the Performance Period (and vice versa) and, similarly, if income or loss related to an asset is excluded from the numerator for any portion of the calendar year within the Performance Period, the related asset’s capital employed shall be excluded from the denominator for the same portion of the calendar year within the Performance Period (and vice versa). The following adjustment provisions shall be made in determining ROCE: (a) exclude the gain or loss related to a business disposition or divestiture (whether or not completed during the Performance Period) and all amounts related to a permanent facility shutdown/closure; (b) exclude the gain or loss related to an asset sale not made in the ordinary course of business; (c) exclude all amounts related to long-lived asset impairments; (d) exclude all amounts related to an acquisition or startup (defined as the startup of a previously closed facility or the startup of a new facility); (e) exclude all amounts related to any single project with an initial capital authorization budget of $3 billion or more during the construction and implementation period, with the full amount of such capital to be included in determining ROCE for each calendar year remaining in the three- year Performance Period beginning with the earlier of (i) the full year in which run rate production capability is achieved, or (ii) the full year in which run rate production capability is expected to be achieved in the business case approved by the Corporation’s Board of Directors; (f) exclude all amounts related to workforce reductions and other restructuring charges; (g) except for retiree benefits, exclude amounts not allocated to segments; and (h) exclude all amounts related to changes in accounting standards and changes in law that affect reported results. provided, however, none of the above adjustments, except for the adjustment set forth in (e) above, shall be made to the ROCE calculation to the extent the events or occurrences relating to the adjustments are recognized and/or contemplated in the Corporation’s Business Plan as approved by the Committee for the relevant Performance Period; provided, further, no adjustment pursuant to any adjustment category shall be made to the extent the total adjustment for such category is less than $10 million; provided, further, all the above adjustments shall be calculated in accordance with generally accepted accounting principles at the time of calculation to the extent the nature of the adjustment is addressed therein; provided, further, none of the above adjustments shall be made to the extent the relevant data is not available; and provided, further, the ROCE calculations, including all adjustments thereto, shall be determined at the time the Committee makes its award decisions and in accordance with the reporting requirements applicable to the Corporation’s reports on Forms 10-K.

-7- EXHIBIT B Confidentiality and Proprietary Rights Agreement This Confidentiality and Proprietary Rights Agreement (“Agreement”) is attached as Exhibit B to, and incorporated as a part of, the United States Steel Corporation Performance Share Award Grant Agreement (“Grant Agreement”) and is applicable to the Participant named in the Grant Agreement to the extent provided in Section 11 of the Grant Agreement. For purposes of this Agreement, United States Steel Corporation and its subsidiaries or affiliates are described as the “Employer” or “Company”, the Participant named in the Grant Agreement is described as the “Employee”, and the Employer and the Employee are collectively referred to herein as the “Parties”. 1. Protection of Confidential Information. (a) Confidential Information. The Employee understands and acknowledges that during the course of employment by the Employer, the Employee will have access to and learn about non-public, confidential, secret, and proprietary documents, materials, data, and other information, in tangible and intangible form, of and relating to the Employer and its businesses and existing and prospective customers, suppliers, investors, and other associated third parties (“Confidential Information”). For purposes of this Agreement, Confidential Information is broadly defined in the Company policy on Protection of Confidential Information and includes, but is not limited to, all information not generally known to the public, in spoken, printed, electronic or any other form or medium, relating directly or indirectly to: business processes, practices, methods, policies, plans, publications, documents, research, operations, services, strategies, techniques, agreements, contracts, transactions, negotiations, know-how, trade secrets, computer programs, applications, databases, manuals, records, articles, supplier information, vendor information, financial information, legal information, marketing information, pricing information, credit information, design information, payroll information, staffing information, personnel information, developments, internal controls, sales information, algorithms, product plans, designs, inventions, unpublished patent applications, original works of authorship, discoveries, experimental processes and results, specifications, manufacturing information of the Employer or its businesses or any existing or prospective customer, supplier, investor, or other associated third party, or of any other person or entity that has entrusted information to the Employer in confidence. Confidential Information shall not include information that is generally available to and known by the public, provided that such disclosure to the public is through no direct or indirect fault of the Employee or person(s) acting on the Employee's behalf. (b) Disclosure and Use Restrictions. (i) Employee agrees: (A) to treat all Confidential Information as strictly confidential and to use such Confidential Information only for the benefit of the Company and as required by Employee’s job responsibilities; (B) not to directly or indirectly disclose, publish, communicate, or make available Confidential Information, or allow it to be disclosed, published, communicated, or made available, in whole or part, to any entity or person whatsoever not having a need to know and authority to know and use the Confidential Information in connection with the business of the Employer and, in any event, not to anyone outside of the direct employ of the Employer except as required in the performance of any of the Employee's authorized employment duties to the Employer and only after execution of a confidentiality agreement (such as a Non-Disclosure Agreement) by the third party with whom Confidential Information will be shared; (C) not to copy any documents, records, files, media, or other resources containing any Confidential Information, or remove any such documents, records, files, media, or other resources from the premises or control of the Employer, except as required in the performance of any of the Employee's authorized employment duties to the Employer or with the prior consent of an authorized officer acting on behalf of the Employer in each instance; and (D) to return all copies of Confidential Information, and any other property of Employer, to Employer upon termination of employment. (ii) The Employee understands and acknowledges that the Employee’s obligations under this Agreement with regard to any particular Confidential Information shall commence immediately upon his acceptance of the Grant Agreement and shall continue during and after the termination of Employee’s employment by the Employer, until such time as such Confidential Information has become public knowledge other than as a result of the Employee's breach of this Agreement or breach by those acting in concert with the Employee or on the Employee's behalf. (c) Permitted Disclosures. Employee understands that the foregoing confidentiality provisions do not prohibit Employee from providing truthful information in good faith to any federal or state governmental agency, entity or official investigating an alleged violation of federal or state law or regulation or when Employee makes other disclosures that are protected under the whistleblower provisions of federal or state law or from making statements or disclosing information, including regarding sexual harassment or assault disputes, where such prohibition is proscribed by law. The Employee acknowledges Employer's policy regarding reporting misconduct or policy violations and the Protection of Confidential Information policy setting forth permissible disclosure of trade secrets if reporting alleged violations of law.

-8- 2. Protection of Proprietary Rights. (a) Work Product. The Employee acknowledges and agrees that all writings, works of authorship, technology, inventions, discoveries, ideas and other work product of any nature whatsoever, that are created, prepared, produced, authored, edited, amended, conceived, or reduced to practice by the Employee, individually or jointly with others, during the period of the Employee’s employment by the Employer, and relating in any way to the business or contemplated business, research, or development of the Employer and all printed, physical, and electronic copies, all improvements, rights, and claims related to the foregoing, and other tangible embodiments thereof (collectively, "Work Product"), as well as any and all rights in and to copyrights, trade secrets, trademarks (and related goodwill), patents, and other intellectual property rights therein arising in any jurisdiction throughout the world and all related rights of priority under international conventions with respect thereto, including all pending and future applications and registrations therefor, and continuations, divisions, continuations-in-part, reissues, extensions, and renewals thereof (collectively, "Intellectual Property Rights"), shall be the sole and exclusive property of the Employer. The Employee further acknowledges that the Employee has been provided a copy of the U. S. Steel Patent Rules and the Employee agrees to be bound by and adhere to the U. S. Steel Patent Rules. (b) Work Made for Hire; Assignment. The Employee acknowledges that, by reason of being employed by the Employer at the relevant times, to the extent permitted by law, all of the Work Product consisting of copyrightable subject matter is "work made for hire" as defined in the Copyright Act of 1976 (17 U.S.C. § 101), and such copyrights are therefore owned by the Employer. To the extent that the foregoing does not apply, the Employee hereby irrevocably assigns to the Employer, for no additional consideration, the Employee's entire right, title and interest in and to all Work Product and Intellectual Property Rights therein, including the right to sue, counterclaim, and recover for all past, present, and future infringement, misappropriation, or dilution thereof, and all rights corresponding thereto throughout the world. (c) Further Assurances; Power of Attorney. During and after the Employee’s employment, the Employee agrees to reasonably cooperate with the Employer to (i) apply for, obtain, perfect, and transfer to the Employer the Work Product and Intellectual Property Rights in the Work Product in any jurisdiction in the world; and (ii) maintain, protect, and enforce the same, including, without limitation, executing and delivering to the Employer any and all applications, oaths, declarations, affidavits, waivers, assignments, and other documents and instruments as shall be requested by the Employer. The Employee hereby irrevocably grants the Employer power of attorney to execute and deliver any such documents on the Employee's behalf in the Employee’s name and to do all other lawfully permitted acts to transfer the Work Product to the Employer and further the transfer, issuance, prosecution, and maintenance of all Intellectual Property Rights therein, to the full extent permitted by law, if the Employee does not promptly cooperate with the Employer's request (without limiting the rights the Employer shall have in such circumstances by operation of law). The power of attorney is coupled with an interest and shall not be impacted by the Employee's subsequent incapacity. (d) Moral Rights. To the extent any copyrights are assigned under this Agreement, the Employee hereby irrevocably waives, to the extent permitted by applicable law, any and all claims the Employee may now or hereafter have in any jurisdiction to all rights of paternity, integrity, disclosure, and withdrawal and any other rights that may be known as "moral rights" with respect to all Work Product and all Intellectual Property Rights therein. (e) No License. The Employee understands that this Agreement does not, and shall not be construed to, grant the Employee any license or right of any nature with respect to any Work Product or Intellectual Property Rights or any Confidential Information, materials, software, or other tools made available to the Employee by the Employer. 3. Security. The Employee agrees to comply with all Employer security and access policies and procedures, including but not limited to the Code of Ethical Business Conduct, the policy on Use and Protection of Assets, Systems, and Intellectual Property, the policy on Protection of Confidential Information, and the Acceptable Use of Computing Resources procedure. 4. CERTIFICATION. BY ACCEPTING THIS AGREEMENT, EMPLOYEE CERTIFIES THAT EMPLOYEE: (A) HAS NOT AND WILL NOT USE OR DISCLOSE TO THE COMPANY ANY CONFIDENTIAL INFORMATION AND/OR TRADE SECRETS BELONGING TO OTHERS, INCLUDING ANY PRIOR EMPLOYERS; (B) WILL NOT USE ANY PRIOR INVENTIONS MADE BY EMPLOYEE AND WHICH THE COMPANY IS NOT LEGALLY ENTITLED TO LEARN OF OR USE; AND (C) IS NOT SUBJECT TO ANY PRIOR AGREEMENTS THAT WOULD PREVENT EMPLOYEE FROM FULLY PERFORMING HIS OR HER DUTIES FOR THE COMPANY. 5. Acknowledgment. Nothing in this Agreement shall alter the at-will status of the employment relationship between the Employer and the Employee, pursuant to which either the Employer or the Employee may terminate the employment relationship at any time, with or without cause, and with or without notice. 6. Remedies. The Employee acknowledges that the Employer's Confidential Information and the Employer's ability to reserve it for the exclusive knowledge and use of the Employer is of great competitive importance and commercial value to the Employer, and that improper use or disclosure of the Confidential Information by the Employee will cause irreparable harm to the Employer, for which remedies at law will not be adequate. In the event of a breach or threatened breach by the Employee of any of the provisions of this Agreement, the Employee hereby consents and agrees that the Employer shall be entitled to seek, in addition to other available remedies, a temporary or permanent injunction or other equitable relief against such breach or threatened breach from any court of competent jurisdiction, without the necessity of showing any actual damages or that monetary damages would not afford an adequate remedy, and without the necessity of posting any bond or other security. The aforementioned equitable relief shall be in addition to, not in lieu of, legal remedies, monetary damages, or other available forms of relief. 7. Protections for Affiliates and Subsidiaries. This Agreement is intended to benefit all Company subsidiaries and affiliates for which Employee performs services, has customer contact, or about which Employee receives Confidential Information. Therefore, any subsidiary or affiliate of Employer that may be adversely affected by a breach may enforce this Agreement regardless of which entity employs Employee at the time.

-9- 8. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 9. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts- of-law principles. 10. Entire Agreement. Unless specifically provided herein, this Agreement contains all the understandings and representations between the Employee and the Employer pertaining to the subject matter hereof and supersedes all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter. 11. Modification and Waiver. No provision of this Agreement may be amended or modified unless such amendment or modification is agreed to in writing and signed by the Employee and by a duly authorized officer of the Employer (other than the Employee). No waiver by either of the Parties of any breach by the other party hereto of any condition or provision of this Agreement to be performed by the other party hereto shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by either of the Parties in exercising any right, power, or privilege hereunder operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege. 12. Severability. If any portion of this Agreement shall be held unenforceable, the parties agree that a court of competent jurisdiction may modify the agreement (by adding or removing language) or sever unenforceable provisions in order to render this Agreement enforceable to the fullest extent permitted by law. 13. Captions. Captions and headings of the sections and paragraphs of this Agreement are intended solely for convenience and no provision of this Agreement is to be construed by reference to the caption or heading of any section or paragraph.

-10- EXHIBIT C Non-Solicitation and Non-Competition Agreement This Non-Solicitation and Non-Competition Agreement (“Agreement”) is attached as Exhibit C to, and incorporated as a part of, the United States Steel Corporation Performance Share Award Grant Agreement (“Grant Agreement”) and is applicable to the Participant named in the Grant Agreement to the extent provided in Section 11 of the Grant Agreement. For purposes of this Agreement, United States Steel Corporation and its subsidiaries or affiliates are described as the “Employer” or “Company”, the Participant named in the Grant Agreement is described as the “Employee”, “me” or “I”, and the Employer and the Employee are collectively referred to herein as the “Parties”. 1. Definitions. (a) “Competing Products” means products or services sold by the Company, or any prospective product or service the Company took steps to develop for which I had any responsibility during the 24 months preceding the termination of my employment. (b) “Restricted Territory” means the geographic territory (i) within sixty miles of the area in which I worked or (ii) over which I had responsibility or (iii) that the nature and scope of my duties could have affected, during the 24 months preceding the termination of my employment, whichever is greatest. Restricted territory may be national or global depending on the nature of my duties and the knowledge acquired in the performance of those duties. 2. Non-Competition. During my employment and for 12 months after termination of my employment for any reason, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) own any business (other than less than 5% ownership in a publicly traded company) that sells Competing Products in the Restricted Territory; or (b) work in the Restricted Territory for any person or entity that sells Competing Products, in any role. 3. Non-Solicitation of Customers & Employees. During my employment and for 12 months after termination of my employment, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) solicit business from any customer or prospective customer of the Company with whom I had contact during the last 24 months of my employment, for purposes of offering goods or services similar to or competitive with those offered by the Company; or (b) solicit any employee or independent contractor of the Company, who worked for the Company during the 6 months preceding termination of my employment, to work for me or my new employer. For purposes of this section, solicit means: (a) Any comments, conduct or activity that would influence a customer’s decision to do business with the Company, regardless of who initiates contact; and/or (b) Any comments, conduct or activity that would influence an employee’s decision to resign his employment with the Company or accept employment with my new company, regardless of who initiates contact. 4. Acknowledgment. Nothing in this Agreement shall alter the at-will status of the employment relationship between the Employer and the Employee, pursuant to which either the Employer or the Employee may terminate the employment relationship at any time, with or without cause, and with or without notice. 5. Change of Position. If the Employer changes Employee’s position or title with the Employer, or transfers Employee from one affiliate to another, this Agreement and Employee’s obligations hereunder will remain in force. 6. Protections for Affiliates and Subsidiaries. This Agreement is intended to benefit all Company subsidiaries and affiliates for which Employee performs services, has customer contact, or about which Employee receives Confidential Information. Therefore, any subsidiary or affiliate of Employer that may be adversely affected by a breach may enforce this Agreement regardless of which entity employs Employee at the time. 7. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 8. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts- of-law principles.

-11- 9. Injunctive Relief and Attorney’s Fees. Employee agrees that in the event Employee breaches this Agreement, the Company will be irreparably harmed and entitled to an injunction restraining any further breach, in addition to any other rights to which it is entitled. Further, Employee will be responsible for all attorneys’ fees, costs and expenses incurred by the Company to enforce this Agreement in the event that the Employee breaches the Agreement. Additionally, any time periods for restrictions set forth in paragraph 2 above will be extended by an amount of time equal to the duration of any time period during which Employee is in violation of this Agreement. 10. Entire Agreement. Unless specifically provided herein, this Agreement contains all the understandings and representations between the Employee and the Employer pertaining to the subject matter hereof and supersedes all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter. 11. Modification and Waiver. No provision of this Agreement may be amended or modified by the parties unless such amendment or modification is agreed to in writing and signed by the Employee and by a duly authorized officer of the Employer (other than the Employee). No waiver by either of the Parties of any breach by the other party hereto of any condition or provision of this Agreement to be performed by the other party hereto shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by either of the Parties in exercising any right, power, or privilege hereunder operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege. 12. Severability. If any portion of this Agreement shall be held unenforceable, the parties agree that a court of competent jurisdiction may modify the Agreement (by adding or removing language) or sever unenforceable provisions in order to render this Agreement enforceable to the fullest extent permitted by law. 13. Captions. Captions and headings of the sections and paragraphs of this Agreement are intended solely for convenience and no provision of this Agreement is to be construed by reference to the caption or heading of any section or paragraph. Note: For Illinois employees, the Employee shall have at least 14 days to review this Agreement and is advised to consult with and seek the advice of an attorney prior to entering into this Agreement. The Employee may voluntarily elect to sign the Agreement before the expiration of the 14–day period.

-12- EXHIBIT D Additional Terms and Conditions of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Performance Share Award Grant Agreement TERMS AND CONDITIONS This Exhibit D includes additional terms and conditions that govern the Performance Share Award granted to the Participant under the Plan if he or she works or resides in one of the countries listed below. If the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the Performance Share Award is granted, the Corporation shall, in its discretion, determine to what extent the terms and conditions contained herein shall be applicable to the Participant. Certain capitalized terms used but not defined in this Exhibit D have the meanings set forth in the Plan and/or the Agreement. NOTIFICATIONS This Exhibit D also includes information regarding exchange controls and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the laws in effect in the applicable countries as of December 2023. Such laws are often complex and change frequently. As a result, the Corporation strongly recommends that the Participant not rely on the information in this Exhibit D as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Participant vests in the Performance Share Award or sells Shares acquired under the Plan. In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation, and the Corporation is not in a position to assure the Participant of a particular result. Accordingly, the Participant is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Participant’s situation. Finally, if the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the Performance Share Award is granted, the information contained herein may not be applicable. SLOVAK REPUBLIC NOTIFICATIONS Foreign Assets Reporting Information. If the Participant permanently resides in the Slovak Republic and, apart from being employed, carries on business activities as an independent entrepreneur (in Slovakian, podnikatel), the Participant will be obligated to report his or her foreign assets (including any foreign securities such as Shares acquired under the Plan) to the National Bank of Slovakia if the value of the foreign assets exceeds a certain legally designated amount. These reports must be submitted on a monthly basis by the 15th day of the respective calendar month, as well as on a quarterly basis by the 15th day of the calendar month following the respective calendar quarter, using notification form DEV (NBS) 1-12, which may be found at the National Bank of Slovakia's website at www.nbs.sk. Furthermore, if the above preconditions are met (i.e., permanent residence in the Slovak Republic and entrepreneurial activities in addition to the employment), the Participant will be obliged to report certain additional information under Section 34b of Act No. 566/1992 Coll. on National Bank of Slovakia as amended. This information is mostly of general nature and contains personal identification data of the Participant - place and date of birth, birth certificate number, academic degree, etc., as well as telephone and fax number and e-mail address of the Participant, if any. Securities Disclaimer. The grant of the Performance Share Award is exempt from the requirement to publish a prospectus under current securities rules applicable in the Slovak Republic. Personal Data Protection. The national identification number (in Slovak: rodné číslo) may be used for identification of the Participant only if required to achieve the determined purpose of processing. It is forbidden to make the national identification number public; the only exception is when the data subject made the national identification number public by itself. UNITED KINGDOM NOTIFICATIONS Securities Disclosure. This Agreement is not an approved prospectus for the purposes of section 85(1) of the Financial Services and Markets Act 2000 (“FSMA”) and no offer of transferable securities to the public (for the purposes of section 102B of FSMA) is being made in connection with the Plan. The Plan and the Performance Share Award are exclusively available in the UK to bona fide employees and former employees and any other UK subsidiary of the Corporation. Taxation. The Performance Share Award is not intended to be tax-qualified or tax-preferred for purposes of taxation or National Insurance Contributions applicable in the United Kingdom. Tax Withholding. The Participant acknowledges that, regardless of any action taken by the Corporation, the ultimate liability for all tax-related items is and remains the responsibility of the Participant and may exceed the amount actually withheld by the Corporation. Prohibition Against Insider Dealing. The Participant should be aware of the UK's insider dealing rules under the Criminal Justice Act 1993, which may affect transactions under the Plan such as the acquisition or sale of Shares acquired under the Plan, if the Participant has inside information regarding the Corporation. If the Participant is uncertain whether the insider dealing rules apply, the Corporation recommends that the Participant consults with a legal advisor. The Corporation cannot be held liable if the Participant violates the UK's insider dealing rules. The Participant is responsible for ensuring his or her compliance with these rules.

-13- UNITED KINGDOM, EUROPEAN UNION AND EUROPEAN ECONOMIC AREA For Participants who reside in the United Kingdom, European Union or the European Economic Area, the following provisions replace the Data Privacy provisions in Section 14 of the Agreement. (a) Data Collected and Purposes of Collection. The Participant understands that the Corporation, acting as controller, as well as the Employing Company, may collect, to the extent permissible under applicable law, certain personal information about the Participant, including name, home address and telephone number, information necessary to process the Performance Share Awards (e.g., mailing address for a check payment or bank account wire transfer information), date of birth, social insurance number or other identification number, salary, nationality, job title, employment location, any Shares or directorships held in the Corporation (but only where needed for legal or tax compliance), any other information necessary to process mandatory tax withholding and reporting, details of all Performance Share Awards granted, canceled, vested, unvested or outstanding in the Participant’s favor, and where applicable service termination date and reason for termination (all such personal information is referred to as “Data”). The Data is collected from the Participant, any Employing Company and the Corporation, for the exclusive purpose of implementing, administering and managing the Plan pursuant to the terms of this Agreement. The legal basis (that is, the legal justification) for processing the Data is to perform this Agreement. The Data must be provided in order for the Participant to participate in the Plan and for the parties to this Agreement to perform their respective obligations thereunder. If the Participant does not provide Data, he or she will not be able to participate in the Plan and become a party to this Agreement. (b) Transfers and Retention of Data. The Participant acknowledges and understands that the Employing Company will transfer Data to the Corporation for purposes of plan administration. The Employing Company and the Corporation may also transfer the Participant’s Data to other service providers (such as accounting firms, payroll processing firms or tax firms), as may be selected by the Corporation in the future, to assist the Corporation with the implementation, administration and management of this Agreement. The Participant understands that the recipients of the Data may be located in the United States, a country that does not benefit from an adequacy decision issued by the European Commission and is not listed by the Swiss supervisory authority as a country with adequate data protection legislation. Where a recipient is located in a country that does not benefit from an adequacy decision or adequacy listing, the transfer of the Data to that recipient will be made pursuant to EU-U.S. Data Privacy Framework or European Commission-approved standard contractual clauses when required by applicable law, a copy of which may be obtained by contacting dataprotection@sk.uss.com or complianceofficer@uss.com. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s rights and obligations under this Agreement, and for the duration of the relevant statutes of limitations, which may be longer than the term of this Agreement. (c) The Participant’s Rights in Respect of Data. The Corporation will take steps in accordance with applicable legislation to keep Data accurate, complete and up-to-date. The Participant is entitled to have any inadequate, incomplete or incorrect Data corrected (that is, rectified). The Participant also has the right to request access to his or her Data as well as additional information about the processing of that Data. Further, the Participant is entitled to object to the processing of Data or have the Participant’s Data erased, under certain circumstances. Subject to conditions set forth in applicable law, the Participant also is entitled to (i) restrict the processing of his or her Data so that it is stored but not actively processed (e.g., while the Corporation assesses whether the Participant is entitled to have Data erased) and (ii) receive a copy of the Data provided pursuant to this Agreement or generated by the Participant, in a common machine-readable format. To exercise his or her rights, the Participant may contact the local human resources representative. The Participant may also contact the relevant data protection supervisory authority, as he or she has the right to lodge a complaint. The data protection officer may be contacted at dataprotection@sk.uss.com.

Retention Grant Agreement – February 2024 United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement United States Steel Corporation, a Delaware corporation (herein called the “Corporation”), grants to the employee of the employing company identified below (the “Participant”) the number of Restricted Stock Units (“RSUs”) set forth below, each of which is a bookkeeping entry representing the equivalent in value of one share of the class of common stock of the Corporation set forth below: Name of Participant: PARTICIPANT NAME Name of Employing Company (The company recognized by the Corporation on Date Hereof: as employing the Participant) Number of RSUs Granted: # RSUs Date of Grant: GRANT DATE By accepting this Award in any manner and within the time period prescribed by the Corporation, the Participant agrees that (1) these RSUs are granted under and governed by the terms and conditions of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan, as the same may be amended from time to time (the “Plan”) and the provisions of this Restricted Stock Unit Grant Agreement, including (i) the Terms and Conditions contained herein, (ii) if applicable to the Participant under Section 11 hereof, the Confidentiality and Proprietary Rights Agreement attached as Exhibit A and the Non-Solicitation and Non-Competition Agreement attached as Exhibit B, and (iii) any special provisions for the Participant’s country of residence set out on Exhibit C (collectively, the “Agreement”), (2) he or she has reviewed the Plan and the Agreement in their entirety, and (3) he or she has had an opportunity to obtain the advice of counsel prior to accepting this Award and fully understands all provisions of the Plan and the Agreement. United States Steel Corporation By:_______________________ Authorized Officer Terms and Conditions 1. Award: The Corporation has granted to the Participant the number of RSUs set forth in this Agreement. Each RSU represents the right to receive one share of the Corporation’s common stock (a “Share”) on the date specified in Section 6 below in settlement of each RSU that has vested as provided in Sections 3, 4 or 5, below. Unless and until the RSUs are vested in the manner set forth in Section 3, 4, or 5 below, the Participant will have no right to the settlement of any such RSUs or any right to receive any Shares. Prior to settlement of any vested RSUs, such RSUs will represent an unsecured obligation of the Corporation, payable (if at all) only from the general assets of the Corporation. 2. Restriction Period: The restriction period with regard to the RSUs shall commence on the date the RSUs are granted and end on the date the RSUs are settled as provided in Section 6, below. During the restriction period, the Participant shall not sell, transfer, assign, pledge or otherwise encumber or dispose of any portion of the RSUs, and any attempt to sell, transfer, assign, pledge or encumber any portion of the RSUs prior to the end of the restriction period shall have no effect. During the restriction period, the Participant shall not be entitled to vote any Shares that may be received upon settlement of any vested RSUs and shall not receive dividends paid on those Shares. The Participant shall be entitled to receive dividend equivalents in cash; provided, however, the dividend equivalents shall not vest or be paid to the Participant unless and to the extent the underlying RSUs vest as provided in Section 3, 4, or 5 of this Agreement. 3. Change in Control: If the Participant’s employment is terminated within two years following a Change in Control involuntarily (except for Cause) or, in the case of a Participant designated by the Corporation as executive management at the time of the Change in Control (“Executive Management”), voluntarily for Good Reason, each unvested RSU will immediately vest, except as otherwise determined by the Corporation with respect to any Participant who is not Executive Management. 4. Termination of Employment: The full unvested Number of RSUs Granted will immediately vest upon the Participant’s death during employment, upon Termination of employment due to becoming Disabled, or upon a Termination of employment under circumstances which would qualify the Participant for benefits under a severance plan of the Corporation, including the execution of any general release required under the severance plan. Unvested RSUs will be forfeited automatically upon any other Termination of employment (including but not limited to any voluntary termination by the Participant or any Termination by the Corporation or the Employing Company for Cause or without Cause), such forfeiture being without consideration or without further action required of the Corporation or Employing Company. 5. Vesting: Subject to Sections 3 and 4, in order to vest in the RSUs, the Participant must continue as an active employee of an Employing Company for three years from the Date of Grant, subject to the Employing Company’s right to terminate the Participant’s employment at any time for any reason. The RSUs shall vest on the three-year anniversary of the Date of Grant, provided that the Participant is continuously employed by an Employing Company through such anniversary. Except as provided in Sections 3 and 4 of this Agreement, notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in the event of the Participant’s Termination of employment, regardless of the reason for such Termination and whether or not later found to be

-2- invalid or in breach of employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any, the Participant’s right to vest in the RSUs, if any, will terminate effective as of the date that the Participant is no longer actively employed by an Employing Company and will not be extended by any notice period (i.e., active employment would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any); the Committee shall have the exclusive discretion to determine when the Participant is no longer actively employed for purposes of the RSUs. 6. Settlement: RSUs that have vested shall be paid in Shares, along with any dividend equivalents with respect to those vested RSUs, within 45 days after the vesting date. The Corporation shall have no obligation to issue Shares unless and until the Participant has satisfied any applicable tax withholding obligations pursuant to Section 12 below and such issuance otherwise complies with all applicable law. Upon vesting and settlement of the RSUs, Shares shall be delivered free of all restrictions on transferability or forfeiture except for restrictions required by applicable laws and/or regulations and issued in the Participant’s name (or, in the event of the Participant’s death prior to such termination or such issuance, to the Participant’s estate) for the number of Shares subject to vested RSUs. The Participant shall not be entitled to delivery of any portion of the Shares until the corresponding portion of the RSUs has vested. 7. Adjustments and Recoupment: The number of RSUs awarded is subject to adjustment as provided in Section 8 of the Plan. The Participant shall be notified of such adjustment and such adjustment shall be binding upon the Corporation and the Participant. This Award shall be administered in accordance with, and is subject to, any recoupment policies and provisions prescribed by the Plan, including but not limited to Section 7.07 thereof and all clawback and recoupment policies or provisions required by law from time to time. In its sole discretion, the Committee shall have the authority to amend, waive or apply the terms of any clawback or recoupment policies or provisions to the extent necessary or advisable to comply with applicable laws, as determined by the Committee. 8. Interpretation and Amendments: This Award, the vesting and delivery of RSUs, and the issuance of Shares upon vesting are subject to, and shall be administered in accordance with, the provisions of the Plan, as the same may be amended by the Committee from time to time, provided that no amendment may, without the consent of the Participant, affect the rights of the Participant under this Award in a materially adverse manner. For purposes of the foregoing sentence, an amendment that affects the tax treatment of the RSUs or that is necessary to comply with securities or other laws applicable to the issuance of Shares shall not be considered as affecting the Participant’s rights in a materially adverse manner. All capitalized terms not otherwise defined herein shall have the meaning assigned to such terms in the Plan. In the event of a conflict between the Plan and this Agreement, unless this Agreement specifies otherwise, the Plan shall control. 9. Compliance with Laws: The obligations of the Corporation and the rights of the Participant are subject to all applicable laws, rules, and regulations including, without limitation, the U.S. Securities Exchange Act of 1934, as amended; the U.S. Securities Act of 1933, as amended; the U.S. Internal Revenue Code of 1986, as amended; and any other applicable U.S. and foreign laws. No Shares will be issued or delivered to the Participant under the Plan unless and until there has been compliance with such applicable laws. 10. Acceptance of Award: This Award is contingent on the Participant’s acceptance of the Award in the manner and within the time period established by the Corporation. The Award shall be forfeited without further action by the Corporation and shall not be payable if it is not accepted by the Participant in the manner and within the time period established by the Corporation. 11. Confidentiality, Non-Solicitation and Non-Competition: If a Participant is employed in the United States in a position below the rank of Senior Vice President of the Corporation on the Date of Grant, then the Participant agrees and understands that (a) by accepting this Award the Participant shall be bound by and subject to the terms of the Confidentiality and Proprietary Rights Agreement attached to this Agreement and incorporated herein as Exhibit A and, to the extent permitted by law, the terms and conditions of the Non-Solicitation and Non-Competition Agreement attached to this Agreement and incorporated herein as Exhibit B; provided, however, that the Non-Solicitation and Non-Competition Agreement shall not be applicable to those Participants employed by Big River Steel (“BRS”) or Vice Presidents of the Corporation who are subject to similar noncompete provisions in prior agreements outside of the Plan with BRS or the Corporation, as applicable, and (b) notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in addition to any other remedies available at law, all unvested RSUs will be forfeited immediately and without further action by the Corporation in the event the Participant fails to comply with or breaches any of the obligations and restrictions under Exhibits A or B of this Agreement. 12. Withholding Taxes: The Participant acknowledges that, regardless of any action taken by the Corporation or the Employing Company, the ultimate liability for any or all income tax, social security, payroll tax, payment on account or other tax-related withholding or liability in connection with any aspect of the RSUs, including the grant, vesting, or settlement of the RSUs or the subsequent sale of Shares (“Tax-Related Items”), is and remains his or her responsibility and may exceed the amount withheld by the Corporation or the Employing Company. Furthermore, the Participant acknowledges that the Corporation and/or the Employing Company (a) make no representations or undertakings regarding the treatment of any Tax-Related Items; and (b) do not commit to and are under no obligation to structure the terms of the grant of the RSUs or any aspect of the Participant’s participation in the Plan to reduce or eliminate his or her liability for Tax-Related Items or to achieve any particular tax result. Further, if the Participant has become subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable event, the Participant acknowledges that the Corporation and/or the Employing Company (or former Employing Company, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction. Prior to the relevant taxable event, the Participant shall pay or make adequate arrangements satisfactory to the Corporation and/or the Employing Company to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Corporation and/or the Employing Company, or their respective agents, at their discretion, to satisfy the obligations with regard to all applicable Tax-Related Items by one or a combination of the following methods: (1) withholding from Participant’s wages or other cash compensation paid to Participant by the Corporation and/or the Employing Company; (2) withholding from proceeds of the sale of Shares issued upon vesting of the RSUs either through a voluntary sale or through a mandatory sale arranged by the Corporation (on Participant’s behalf pursuant to this authorization) through such means as the Corporation may determine in its sole discretion (whether through a broker or otherwise); or (3) withholding in Shares to be issued upon vesting of the RSUs. If the Corporation gives the Participant the power to choose the withholding method, and the Participant does not make a choice, then the Corporation will at its discretion withhold in Shares as stated in alternative (3) herein. To avoid negative accounting treatment, the Corporation may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates. If the Corporation withholds at a rate other than the minimum statutory rate, such as

-3- the maximum withholding rate, then the refund of any over-withheld amount shall be paid in cash and the Participant will have no entitlement to the Common Stock equivalent. If the Tax-Related Items are satisfied by withholding in Shares issuable upon vesting of the RSUs, for tax purposes, the Participant is deemed to have been issued the full number of Shares subject to the RSUs, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax-Related Items. Finally, the Participant shall pay to the Corporation or the Employing Company, any amount of Tax- Related Items due as a result of any aspect of the Participant’s participation in the Plan. The Participant understands that no Shares or proceeds from the sale of Shares shall be delivered to Participant, notwithstanding the lapse of the restrictions on the RSUs, unless and until the Participant shall have satisfied any obligation for Tax-Related Items with respect thereto. Notwithstanding anything in this Section 12 to the contrary, if the RSUs are considered nonqualified deferred compensation subject to Section 409A, the fair market value of the Shares withheld together with the amount of cash withheld may not exceed the liability for Tax-Related Items. 13. Nature of the Award: Nothing herein shall be construed as giving the Participant any right to be retained in the employ of an Employing Company or affect any right which the Employing Company may have to terminate the employment of such Participant. Further, by accepting this grant of RSUs, the Participant acknowledges that: (a) the Plan is established voluntarily by the Corporation, it is discretionary in nature and may be modified, amended, suspended or terminated by the Corporation at any time, to the extent permitted by its terms; (b) the grant of the RSUs is voluntary and occasional and does not create any contractual or other right to receive future grants of RSUs, or benefits in lieu of RSUs, even if RSUs have been granted in the past; (c) all decisions with respect to future RSU grants, if any, will be at the sole discretion of the Committee or its delegee, as applicable; (d) the Participant is voluntarily participating in the Plan; (e) the RSUs and the Shares subject to the RSUs are extraordinary items which do not constitute compensation of any kind for services of any kind rendered to the Corporation or to the Employing Company, and which are outside the scope of the Participant’s employment contract, if any; (f) the RSUs and the Shares subject to the RSUs are not part of normal or expected compensation or salary for purposes of calculating any severance, resignation, termination, dismissal, redundancy, end-of-service payments, bonuses, long-service awards, pension or retirement benefits, or similar payments and in no event should be considered as compensation for, or relating in any way to, past services for the Corporation or the Employing Company or any Subsidiary or affiliate of the Corporation; (g) the RSUs and the Shares subject to the RSUs are not intended to replace any pension rights or compensation; (h) the grant of RSUs will not be interpreted to form an employment contract or relationship with the Corporation, the Employing Company or any Subsidiary or affiliate of the Corporation; (i) the future value of the Shares underlying the RSUs is unknown, indeterminable, and cannot be predicted with certainty; (j) no claim or entitlement to compensation or damages arises from forfeiture of the RSUs resulting from termination of the Participant’s employment by the Corporation or the Employing Company (for any reason whether or not in breach of applicable labor laws or the terms of the Participant’s employment agreement, if any), and in consideration of the grant of the RSUs to which the Participant is not otherwise entitled, the Participant irrevocably agrees never to institute any claim against the Corporation or the Employing Company, waives his or her ability, if any, to bring any such claim, and releases the Corporation and the Employing Company from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Participant shall be deemed irrevocably to have agreed not to pursue such claim and agreed to execute any and all documents necessary to request dismissal or withdrawal of such claim; (k) it is the Participant’s sole responsibility to investigate and comply with any applicable exchange control laws in connection with the issuance and delivery of Shares pursuant to the vesting of the RSUs; (l) the Corporation and the Employing Company are not providing any tax, legal or financial advice, nor are the Corporation or the Employing Company making any recommendations regarding the Participant’s participation in the Plan or the Participant’s acquisition or sale of the Shares underlying the RSUs; (m) the Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan; (n) unless otherwise provided in the Plan or by the Corporation in its discretion, the RSUs and the benefits evidenced by this Agreement do not create any entitlement to have the RSUs or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares of the Corporation; and (o) the following provisions apply only if the Participant is providing services outside the United States: (i) the RSU and Shares subject to the RSU are not part of normal or expected compensation or salary for any purpose; and (ii) the Participant acknowledges and agrees that neither the Corporation, the Employing Company nor any Subsidiary or affiliate of the Corporation shall be liable for any foreign exchange rate fluctuation between the local currency and the United States Dollar that may affect the value of the RSUs or of any amounts due to Participant pursuant to the settlement of the RSUs or the subsequent sale of any Shares acquired upon settlement. 14. Data Privacy: (a) The Participant hereby explicitly, unambiguously and voluntarily consents to the collection, use, disclosure and transfer, in electronic or other form, of his or her personal data as described in this Agreement and any other RSUs materials (“Data”) by and among, as applicable, any Employing Company and the Corporation for the exclusive purpose of implementing, administering, and managing his or her participation in the Plan. (b) The Participant understands that any Employing Company and the Corporation may collect, maintain, process and disclose certain personal information about him or her, including, but not limited to, his or her name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any Shares or directorships held in the Corporation, details of all equity awards or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, for the exclusive purpose of implementing, administering, and managing the Plan. (c) The Participant acknowledges that Data will be transferred to any broker as designated by the Corporation and/or one or more stock plan service provider(s) selected by the Corporation, which may assist the Corporation with the implementation, administration and management of the Plan. The Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipient’s country

-4- (e.g., the United States) may have different, including less stringent, data privacy laws and protections than his or her country. The Participant understands that if he or she resides outside the United States, he or she may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Participant authorizes the Corporation and any other possible recipients that may assist the Corporation (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purposes of implementing, administering and managing his or her participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit any Shares acquired upon vesting of the RSUs. (d) The Participant understands that Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan, including to maintain records regarding participation. The Participant understands that if he or she resides in certain jurisdictions, to the extent required by applicable laws, he or she may, at any time, request access to Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents given by accepting these RSUs, in any case without cost, by contacting in writing his or her local human resources representative. Further, the Participant understands that he or she is providing these consents on a purely voluntary basis. If the Participant does not consent or if he or she later seeks to revoke his or her consent, his or her engagement as a service provider with any Employing Company and the Corporation will not be adversely affected; the only consequence of refusing or withdrawing his or her consent is that the Corporation will not be able to grant him or her RSUs under the Plan or administer or maintain RSUs. Therefore, the Participant understands that refusing or withdrawing his or her consent may affect his or her ability to participate in the Plan (including the right to retain these RSUs). The Participant understands that he or she may contact his or her local human resources representative for more information on the consequences of his or her refusal to consent or withdrawal of consent. 15. Electronic Delivery: The Corporation may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means or request the Participant’s consent to participate in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through any online or electronic system established and maintained by the Corporation or another third party designated by the Corporation. Such means of electronic delivery may include but do not necessarily include the delivery of a link to a Corporation intranet or the Internet site of a third party involved in administering the Plan, the delivery of the document via e-mail or such other means of electronic delivery specified by the Corporation. The Participant consents to the electronic delivery of the Plan documents and the Agreement. The Participant acknowledges that he or she may receive from the Corporation a paper copy of any documents delivered electronically at no cost to the Participant by contacting the Corporation by telephone or in writing. The Participant further acknowledges that the Participant will be provided with a paper copy of any documents if the attempted electronic delivery of such documents fails. Similarly, the Participant understands that the Participant must provide the Corporation or any designated third-party administrator with a paper copy of any documents if the attempted electronic delivery of such documents fails. The Participant may revoke his or her consent to the electronic delivery of documents or may change the electronic mail address to which such documents are to be delivered (if the Participant has provided an electronic mail address) at any time by notifying the Corporation of such revoked consent or revised e- mail address by telephone, postal service or electronic mail. The Participant agrees that the foregoing online or electronic participation in the Plan shall have the same force and effect as documentation executed in hardcopy written form. Finally, the Participant understands that he or she is not required to consent to electronic delivery of documents. 16. Code Section 409A: It is the intent that the vesting or the payments of RSUs set forth in this Agreement shall either qualify for exemption from or comply with the requirements of Section 409A, and any ambiguities herein will be interpreted to so comply. The Corporation reserves the right, to the extent the Corporation deems necessary or advisable in its sole discretion, to unilaterally amend or modify this Agreement as may be necessary to ensure that all vesting or settlements provided under this Agreement are made in a manner that qualifies for exemption from or complies with Section 409A; provided, however, that the Corporation makes no representation that the vesting or settlement of RSUs provided under this Agreement will be exempt from Section 409A and makes no undertaking to preclude Section 409A from applying to the vesting or settlement of RSUs provided under this Agreement. In the event that any payment to a U.S. taxpayer or Participant otherwise subject to U.S. taxation, with respect to an RSU is considered to be based upon separation from service, and not compensation the Participant could receive without separating from service, then such amounts may not be paid until the first business day of the seventh month following the date of the Participant’s termination if the Participant is a “specified employee” under Section 409A of the Code upon his separation from service. 17. Severability: In the event that any provision in this Agreement is held invalid or unenforceable, such provision will be severable from, and such invalidity or unenforceability will not be construed to have any effect on, the remaining provisions of this Agreement. 18. Language: If the Participant has received this Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 19. Governing Law and Venue: This Agreement shall be construed and enforced in accordance with the laws of the Commonwealth of Pennsylvania, without regard to the conflicts of laws thereof. For purposes of litigating any dispute that arises under this grant or this Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania, and agree that such litigation shall be conducted in the courts of Allegheny County, Pennsylvania, or the federal courts for the United States for the Western District of Pennsylvania, where this grant is made and/or to be performed. 20. Exhibit C: Notwithstanding any provisions in this Agreement, the RSUs shall be subject to any special terms and conditions set forth in Exhibit C to this Agreement for the Participant’s country. Moreover, if the Participant relocates to one of the countries included in Exhibit C, the special terms and conditions for such country will apply to the Participant, to the extent the Corporation determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. 21. Insider Trading Restrictions/Market Abuse Laws: The Participant acknowledges that, depending on the Participant's country of residence, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect the Participant's ability to acquire or sell Shares or rights to Shares (e.g., RSUs) under the Plan during such times as the Participant is considered to have “inside information” regarding the Corporation (as defined by any applicable laws in the Participant's country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable insider trading policy maintained by the Corporation. The Participant acknowledges that it is the Participant's responsibility to comply with any applicable restrictions, and the Participant is advised to speak to his or her personal advisor on this matter.

-5- 22. Imposition of Other Requirements: The Corporation reserves the right to impose other requirements on the Participant’s participation in the Plan, on the RSUs and on any Shares acquired under the Plan, to the extent the Corporation determines it is necessary or advisable in order to comply with local law, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing. 23. Headings: Headings of paragraphs and sections used in this Agreement are for convenience only and are not part of this Agreement, and must not be used in construing it. 24. Waiver: The Participant acknowledges that a waiver by the Corporation of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by the Participant. 25. No Advice Regarding Grant: The Corporation is not providing any tax, legal or financial advice, nor is the Corporation making any recommendations or assessments regarding the Participant’s participation in the Plan, or his or her acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan. 26. Definitions: In addition to the capitalized terms defined in the Plan, the following terms as used herein shall have the following meanings when used with initial capital letters: (a) “Termination” shall mean the applicable employee’s termination of employment. For purposes of this Agreement, (i) for U.S. taxpayers, Termination and words of similar effect shall be construed consistent with a “separation from service” under Section 409A of the Code to the extent required by Section 409A of the Code, and (ii) for non-U.S. taxpayers, Termination and words of similar effect shall mean that the Participant is no longer actively employed by an Employing Company, without regard to any notice period (i.e., active employment would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any).

-6- EXHIBIT A Confidentiality and Proprietary Rights Agreement This Confidentiality and Proprietary Rights Agreement (“Agreement”) is attached as Exhibit A to, and incorporated as a part of, the United States Steel Corporation Restricted Stock Unit Grant Agreement (“RSU Agreement”) and is applicable to the Participant named in the RSU Agreement to the extent provided in Section 11 of the RSU Agreement. For purposes of this Agreement, United States Steel Corporation and its subsidiaries or affiliates are described as the “Employer” or “Company”, the Participant named in the RSU Agreement is described as the “Employee”, and the Employer and the Employee are collectively referred to herein as the “Parties”. 1. Protection of Confidential Information. (a) Confidential Information. The Employee understands and acknowledges that during the course of employment by the Employer, the Employee will have access to and learn about non-public, confidential, secret, and proprietary documents, materials, data, and other information, in tangible and intangible form, of and relating to the Employer and its businesses and existing and prospective customers, suppliers, investors, and other associated third parties (“Confidential Information”). For purposes of this Agreement, Confidential Information is broadly defined in the Company policy on Protection of Confidential Information and includes, but is not limited to, all information not generally known to the public, in spoken, printed, electronic or any other form or medium, relating directly or indirectly to: business processes, practices, methods, policies, plans, publications, documents, research, operations, services, strategies, techniques, agreements, contracts, transactions, negotiations, know-how, trade secrets, computer programs, applications, databases, manuals, records, articles, supplier information, vendor information, financial information, legal information, marketing information, pricing information, credit information, design information, payroll information, staffing information, personnel information, developments, internal controls, sales information, algorithms, product plans, designs, inventions, unpublished patent applications, original works of authorship, discoveries, experimental processes and results, specifications, manufacturing information of the Employer or its businesses or any existing or prospective customer, supplier, investor, or other associated third party, or of any other person or entity that has entrusted information to the Employer in confidence. Confidential Information shall not include information that is generally available to and known by the public, provided that such disclosure to the public is through no direct or indirect fault of the Employee or person(s) acting on the Employee's behalf. (b) Disclosure and Use Restrictions. (i) Employee agrees: (A) to treat all Confidential Information as strictly confidential and to use such Confidential Information only for the benefit of the Company and as required by Employee’s job responsibilities; (B) not to directly or indirectly disclose, publish, communicate, or make available Confidential Information, or allow it to be disclosed, published, communicated, or made available, in whole or part, to any entity or person whatsoever not having a need to know and authority to know and use the Confidential Information in connection with the business of the Employer and, in any event, not to anyone outside of the direct employ of the Employer except as required in the performance of any of the Employee's authorized employment duties to the Employer and only after execution of a confidentiality agreement (such as a Non-Disclosure Agreement) by the third party with whom Confidential Information will be shared; (C) not to copy any documents, records, files, media, or other resources containing any Confidential Information, or remove any such documents, records, files, media, or other resources from the premises or control of the Employer, except as required in the performance of any of the Employee's authorized employment duties to the Employer or with the prior consent of an authorized officer acting on behalf of the Employer in each instance; and (D) to return all copies of Confidential Information, and any other property of Employer, to Employer upon termination of employment. (ii) The Employee understands and acknowledges that the Employee’s obligations under this Agreement with regard to any particular Confidential Information shall commence immediately upon his acceptance of the RSU Agreement and shall continue during and after the termination of Employee’s employment by the Employer, until such time as such Confidential Information has become public knowledge other than as a result of the Employee's breach of this Agreement or breach by those acting in concert with the Employee or on the Employee's behalf. (c) Permitted Disclosures. Employee understands that the foregoing confidentiality provisions do not prohibit Employee from providing truthful information in good faith to any federal or state governmental agency, entity or official investigating an alleged violation of federal or state law or regulation or when Employee makes other disclosures that are protected under the whistleblower provisions of federal or state law or from making statements or disclosing information, including regarding sexual harassment or assault disputes, where such prohibition is proscribed by law. The Employee acknowledges Employer's policy regarding reporting misconduct or policy violations and the Protection of Confidential Information policy setting forth permissible disclosure of trade secrets if reporting alleged violations of law.

-7- 2. Protection of Proprietary Rights. (a) Work Product. The Employee acknowledges and agrees that all writings, works of authorship, technology, inventions, discoveries, ideas and other work product of any nature whatsoever, that are created, prepared, produced, authored, edited, amended, conceived, or reduced to practice by the Employee, individually or jointly with others, during the period of the Employee’s employment by the Employer, and relating in any way to the business or contemplated business, research, or development of the Employer and all printed, physical, and electronic copies, all improvements, rights, and claims related to the foregoing, and other tangible embodiments thereof (collectively, "Work Product"), as well as any and all rights in and to copyrights, trade secrets, trademarks (and related goodwill), patents, and other intellectual property rights therein arising in any jurisdiction throughout the world and all related rights of priority under international conventions with respect thereto, including all pending and future applications and registrations therefor, and continuations, divisions, continuations-in-part, reissues, extensions, and renewals thereof (collectively, "Intellectual Property Rights"), shall be the sole and exclusive property of the Employer. The Employee further acknowledges that the Employee has been provided a copy of the U. S. Steel Patent Rules and the Employee agrees to be bound by and adhere to the U. S. Steel Patent Rules. (b) Work Made for Hire; Assignment. The Employee acknowledges that, by reason of being employed by the Employer at the relevant times, to the extent permitted by law, all of the Work Product consisting of copyrightable subject matter is "work made for hire" as defined in the Copyright Act of 1976 (17 U.S.C. § 101), and such copyrights are therefore owned by the Employer. To the extent that the foregoing does not apply, the Employee hereby irrevocably assigns to the Employer, for no additional consideration, the Employee's entire right, title and interest in and to all Work Product and Intellectual Property Rights therein, including the right to sue, counterclaim, and recover for all past, present, and future infringement, misappropriation, or dilution thereof, and all rights corresponding thereto throughout the world. (c) Further Assurances; Power of Attorney. During and after the Employee’s employment, the Employee agrees to reasonably cooperate with the Employer to (i) apply for, obtain, perfect, and transfer to the Employer the Work Product and Intellectual Property Rights in the Work Product in any jurisdiction in the world; and (ii) maintain, protect, and enforce the same, including, without limitation, executing and delivering to the Employer any and all applications, oaths, declarations, affidavits, waivers, assignments, and other documents and instruments as shall be requested by the Employer. The Employee hereby irrevocably grants the Employer power of attorney to execute and deliver any such documents on the Employee's behalf in the Employee’s name and to do all other lawfully permitted acts to transfer the Work Product to the Employer and further the transfer, issuance, prosecution, and maintenance of all Intellectual Property Rights therein, to the full extent permitted by law, if the Employee does not promptly cooperate with the Employer's request (without limiting the rights the Employer shall have in such circumstances by operation of law). The power of attorney is coupled with an interest and shall not be impacted by the Employee's subsequent incapacity. (d) Moral Rights. To the extent any copyrights are assigned under this Agreement, the Employee hereby irrevocably waives, to the extent permitted by applicable law, any and all claims the Employee may now or hereafter have in any jurisdiction to all rights of paternity, integrity, disclosure, and withdrawal and any other rights that may be known as "moral rights" with respect to all Work Product and all Intellectual Property Rights therein. (e) No License. The Employee understands that this Agreement does not, and shall not be construed to, grant the Employee any license or right of any nature with respect to any Work Product or Intellectual Property Rights or any Confidential Information, materials, software, or other tools made available to the Employee by the Employer. 3. Security. The Employee agrees to comply with all Employer security and access policies and procedures, including but not limited to the Code of Ethical Business Conduct, the policy on Use and Protection of Assets, Systems, and Intellectual Property, the policy on Protection of Confidential Information, and the Acceptable Use of Computing Resources procedure. 4. CERTIFICATION. BY ACCEPTING THIS AGREEMENT, EMPLOYEE CERTIFIES THAT EMPLOYEE: (A) HAS NOT AND WILL NOT USE OR DISCLOSE TO THE COMPANY ANY CONFIDENTIAL INFORMATION AND/OR TRADE SECRETS BELONGING TO OTHERS, INCLUDING ANY PRIOR EMPLOYERS; (B) WILL NOT USE ANY PRIOR INVENTIONS MADE BY EMPLOYEE AND WHICH THE COMPANY IS NOT LEGALLY ENTITLED TO LEARN OF OR USE; AND (C) IS NOT SUBJECT TO ANY PRIOR AGREEMENTS THAT WOULD PREVENT EMPLOYEE FROM FULLY PERFORMING HIS OR HER DUTIES FOR THE COMPANY. 5. Acknowledgment. Nothing in this Agreement shall alter the at-will status of the employment relationship between the Employer and the Employee, pursuant to which either the Employer or the Employee may terminate the employment relationship at any time, with or without cause, and with or without notice. 6. Remedies. The Employee acknowledges that the Employer's Confidential Information and the Employer's ability to reserve it for the exclusive knowledge and use of the Employer is of great competitive importance and commercial value to the Employer, and that improper use or disclosure of the Confidential Information by the Employee will cause irreparable harm to the Employer, for which remedies at law will not be adequate. In the event of a breach or threatened breach by the Employee of any of the provisions of this Agreement, the Employee hereby consents and agrees that the Employer shall be entitled to seek, in addition to other available remedies, a temporary or permanent injunction or other equitable relief against such breach or threatened breach from any court of competent jurisdiction, without the necessity of showing any actual damages or that monetary damages would not afford an adequate remedy, and without the necessity of posting any bond or other security. The aforementioned equitable relief shall be in addition to, not in lieu of, legal remedies, monetary damages, or other available forms of relief. 7. Protections for Affiliates and Subsidiaries. This Agreement is intended to benefit all Company subsidiaries and affiliates for which Employee performs services, has customer contact, or about which Employee receives Confidential Information. Therefore, any subsidiary or affiliate of Employer that may be adversely affected by a breach may enforce this Agreement regardless of which entity employs Employee at the time.

-8- 8. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 9. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts- of-law principles. 10. Entire Agreement. Unless specifically provided herein, this Agreement contains all the understandings and representations between the Employee and the Employer pertaining to the subject matter hereof and supersedes all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter. 11. Modification and Waiver. No provision of this Agreement may be amended or modified unless such amendment or modification is agreed to in writing and signed by the Employee and by a duly authorized officer of the Employer (other than the Employee). No waiver by either of the Parties of any breach by the other party hereto of any condition or provision of this Agreement to be performed by the other party hereto shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by either of the Parties in exercising any right, power, or privilege hereunder operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege. 12. Severability. If any portion of this Agreement shall be held unenforceable, the parties agree that a court of competent jurisdiction may modify the agreement (by adding or removing language) or sever unenforceable provisions in order to render this Agreement enforceable to the fullest extent permitted by law. 13. Captions. Captions and headings of the sections and paragraphs of this Agreement are intended solely for convenience and no provision of this Agreement is to be construed by reference to the caption or heading of any section or paragraph.

-9- EXHIBIT B Non-Solicitation and Non-Competition Agreement This Non-Solicitation and Non-Competition Agreement (“Agreement”) is attached as Exhibit B to, and incorporated as a part of, the United States Steel Corporation Restricted Stock Unit Grant Agreement (“RSU Agreement”) and is applicable to the Participant named in the RSU Agreement to the extent provided in Section 11 of the RSU Agreement. For purposes of this Agreement, United States Steel Corporation and its subsidiaries or affiliates are described as the “Employer” or “Company”, the Participant named in the RSU Agreement is described as the “Employee”, “me” or “I”, and the Employer and the Employee are collectively referred to herein as the “Parties”. 1. Definitions. (a) “Competing Products” means products or services sold by the Company, or any prospective product or service the Company took steps to develop for which I had any responsibility during the 24 months preceding the termination of my employment. (b) “Restricted Territory” means the geographic territory (i) within sixty miles of the area in which I worked or (ii) over which I had responsibility or (iii) that the nature and scope of my duties could have affected, during the 24 months preceding the termination of my employment, whichever is greatest. Restricted territory may be national or global depending on the nature of my duties and the knowledge acquired in the performance of those duties. 2. Non-Competition. During my employment and for 12 months after termination of my employment for any reason, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) own any business (other than less than 5% ownership in a publicly traded company) that sells Competing Products in the Restricted Territory; or (b) work in the Restricted Territory for any person or entity that sells Competing Products, in any role. 3. Non-Solicitation Of Customers & Employees. During my employment and for 12 months after termination of my employment, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) solicit business from any customer or prospective customer of the Company with whom I had contact during the last 24 months of my employment, for purposes of offering goods or services similar to or competitive with those offered by the Company; or (b) solicit any employee or independent contractor of the Company, who worked for the Company during the 6 months preceding termination of my employment, to work for me or my new employer. For purposes of this section, solicit means: (a) Any comments, conduct or activity that would influence a customer’s decision to do business with the Company, regardless of who initiates contact; and/or (b) Any comments, conduct or activity that would influence an employee’s decision to resign his employment with the Company or accept employment with my new company, regardless of who initiates contact. 4. Acknowledgment. Nothing in this Agreement shall alter the at-will status of the employment relationship between the Employer and the Employee, pursuant to which either the Employer or the Employee may terminate the employment relationship at any time, with or without cause, and with or without notice. 5. Change of Position. If the Employer changes Employee’s position or title with the Employer, or transfers Employee from one affiliate to another, this Agreement and Employee’s obligations hereunder will remain in force. 6. Protections for Affiliates and Subsidiaries. This Agreement is intended to benefit all Company subsidiaries and affiliates for which Employee performs services, has customer contact, or about which Employee receives Confidential Information. Therefore, any subsidiary or affiliate of Employer that may be adversely affected by a breach may enforce this Agreement regardless of which entity employs Employee at the time. 7. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 8. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts- of-law principles.

-10- 9. Injunctive Relief and Attorney’s Fees. Employee agrees that in the event Employee breaches this Agreement, the Company will be irreparably harmed and entitled to an injunction restraining any further breach, in addition to any other rights to which it is entitled. Further, Employee will be responsible for all attorneys’ fees, costs and expenses incurred by the Company to enforce this Agreement in the event that the Employee breaches the Agreement. Additionally, any time periods for restrictions set forth in Paragraph 2 above will be extended by an amount of time equal to the duration of any time period during which Employee is in violation of this Agreement. 10. Entire Agreement. Unless specifically provided herein, this Agreement contains all the understandings and representations between the Employee and the Employer pertaining to the subject matter hereof and supersedes all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter. 11. Modification and Waiver. No provision of this Agreement may be amended or modified by the parties unless such amendment or modification is agreed to in writing and signed by the Employee and by a duly authorized officer of the Employer (other than the Employee). No waiver by either of the Parties of any breach by the other party hereto of any condition or provision of this Agreement to be performed by the other party hereto shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by either of the Parties in exercising any right, power, or privilege hereunder operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege. 12. Severability. If any portion of this Agreement shall be held unenforceable, the parties agree that a court of competent jurisdiction may modify the Agreement (by adding or removing language) or sever unenforceable provisions in order to render this Agreement enforceable to the fullest extent permitted by law. 13. Captions. Captions and headings of the sections and paragraphs of this Agreement are intended solely for convenience and no provision of this Agreement is to be construed by reference to the caption or heading of any section or paragraph. Note: For Illinois employees, the Employee shall have at least 14 days to review this Agreement and is advised to consult with and seek the advice of an attorney prior to entering into this Agreement. The Employee may voluntarily elect to sign the Agreement before the expiration of the 14–day period.

-11- EXHIBIT C Additional Terms and Conditions of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement TERMS AND CONDITIONS This Exhibit C includes additional terms and conditions that govern the RSUs granted to the Participant under the Plan if he or she works or resides in one of the countries listed below. If the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the RSUs are granted, the Corporation shall, in its discretion, determine to what extent the terms and conditions contained herein shall be applicable to the Participant. Certain capitalized terms used but not defined in this Exhibit C have the meanings set forth in the Plan and/or the Agreement. NOTIFICATIONS This Exhibit C also includes information regarding exchange controls and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the laws in effect in the applicable countries as of December 2023. Such laws are often complex and change frequently. As a result, the Corporation strongly recommends that the Participant not rely on the information in this Exhibit C as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Participant vests in the RSUs or sells Shares acquired under the Plan. In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation, and the Corporation is not in a position to assure the Participant of a particular result. Accordingly, the Participant is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Participant’s situation. Finally, if the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the RSUs are granted, the information contained herein may not be applicable. SLOVAK REPUBLIC NOTIFICATIONS Foreign Assets Reporting Information. If the Participant permanently resides in the Slovak Republic and, apart from being employed, carries on business activities as an independent entrepreneur (in Slovakian, podnikatel), the Participant will be obligated to report his or her foreign assets (including any foreign securities such as Shares acquired under the Plan) to the National Bank of Slovakia if the value of the foreign assets exceeds a certain legally designated amount. These reports must be submitted on a monthly basis by the 15th day of the respective calendar month, as well as on a quarterly basis by the 15th day of the calendar month following the respective calendar quarter, using notification form DEV (NBS) 1-12, which may be found at the National Bank of Slovakia's website at www.nbs.sk. Furthermore, if the above preconditions are met (i.e., permanent residence in the Slovak Republic and entrepreneurial activities in addition to the employment), the Participant will be obliged to report certain additional information under Section 34b of Act No. 566/1992 Coll. on National Bank of Slovakia as amended. This information is mostly of general nature and contains personal identification data of the Participant - place and date of birth, birth certificate number, academic degree, etc., as well as telephone and fax number and e-mail address of the Participant, if any. Securities Disclaimer. The grant of the RSUs is exempt from the requirement to publish a prospectus under the EU Prospectus Regulation as implemented in the Slovak Republic. Personal Data Protection. The national identification number (in Slovak: rodné číslo) may be used for identification of the Participant only if required to achieve the determined purpose of processing. It is forbidden to make the national identification number public; the only exception is when the data subject made the national identification number public by itself. UNITED KINGDOM NOTIFICATIONS Securities Disclosure. The Agreement is not an approved prospectus for the purposes of section 85(1) of the Financial Services and Markets Act 2000 (“FSMA”) and no offer of transferable securities to the public (for the purposes of section 102B of FSMA) is being made in connection with the Plan. The Plan and the RSUs are exclusively available in the UK to bona fide employees and former employees and any other UK subsidiary of the Corporation. Taxation. The RSUs are not intended to be tax-qualified or tax-preferred for purposes of taxation or National Insurance Contributions applicable in the United Kingdom. Tax Consultation. Participant understands that he or she may suffer adverse tax consequences as a result of Participant’s acquisition or disposition of the Shares. Participant represents that he or she will consult with any tax advisors that Participant deems appropriate in connection with the acquisition or disposition of the Shares and that Participant is not relying on the Employing Company and the Corporation for any tax advice.

-12- Tax Withholding. The Participant acknowledges that, regardless of any action taken by the Corporation, the ultimate liability for all tax-related items is and remains the responsibility of the Participant and may exceed the amount actually withheld by the Corporation. Prohibition Against Insider Dealing. The Participant should be aware of the UK's insider dealing rules under the Criminal Justice Act 1993, which may affect transactions under the Plan such as the acquisition or sale of Shares acquired under the Plan, if the Participant has inside information regarding the Corporation. If the Participant is uncertain whether the insider dealing rules apply, the Corporation recommends that the Participant consults with a legal advisor. The Corporation cannot be held liable if the Participant violates the UK's insider dealing rules. The Participant is responsible for ensuring his or her compliance with these rules. UNITED KINGDOM, EUROPEAN UNION AND EUROPEAN ECONOMIC AREA For Participants who reside in the United Kingdom, European Union or the European Economic Area, the following provisions replace the Data Privacy provisions in Section 14 of the Agreement. (a) Data Collected and Purposes of Collection. The Participant understands that the Corporation, acting as controller, as well as the Employing Company, may collect, to the extent permissible under applicable law, certain personal information about the Participant, including name, home address and telephone number, information necessary to process the RSUs (e.g., mailing address for a check payment or bank account wire transfer information), date of birth, social insurance number or other identification number, salary, nationality, job title, employment location, any Shares or directorships held in the Corporation (but only where needed for legal or tax compliance), any other information necessary to process mandatory tax withholding and reporting, details of all RSUs granted, canceled, vested, unvested or outstanding in the Participant’s favor, and where applicable Service termination date and reason for termination (all such personal information is referred to as “Data”). The Data is collected from the Participant, any Employing Company and the Corporation, for the exclusive purpose of implementing, administering and managing the Plan pursuant to the terms of this Agreement. The legal basis (that is, the legal justification) for processing the Data is to perform this Agreement. The Data must be provided in order for the Participant to participate in the Plan and for the parties to this Agreement to perform their respective obligations thereunder. If the Participant does not provide Data, he or she will not be able to participate in the Plan and become a party to this Agreement. (b) Transfers and Retention of Data. The Participant acknowledges and understands that the Employing Company will transfer Data to the Corporation for purposes of plan administration. The Employing Company and the Corporation may also transfer the Participant’s Data to other service providers (such as accounting firms, payroll processing firms or tax firms), as may be selected by the Corporation in the future, to assist the Corporation with the implementation, administration and management of this Agreement. The Participant understands that the recipients of the Data may be located in the United States, a country that does not benefit from an adequacy decision issued by the European Commission and is not listed by the Swiss supervisory authority as a country with adequate data protection legislation. Where a recipient is located in a country that does not benefit from an adequacy decision or adequacy listing, the transfer of the Data to that recipient will be made pursuant to EU-U.S. Data Privacy Framework or European Commission-approved standard contractual clauses when required by applicable law, a copy of which may be obtained by contacting dataprotection@sk.uss.com or complianceofficer@uss.com. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s rights and obligations under this Agreement, and for the duration of the relevant statutes of limitations, which may be longer than the term of this Agreement. (c) The Participant’s Rights in Respect of Data. The Corporation will take steps in accordance with applicable legislation to keep Data accurate, complete and up-to-date. The Participant is entitled to have any inadequate, incomplete or incorrect Data corrected (that is, rectified). The Participant also has the right to request access to his or her Data as well as additional information about the processing of that Data. Further, the Participant is entitled to object to the processing of Data or have the Participant’s Data erased, under certain circumstances. Subject to conditions set forth in applicable law, the Participant also is entitled to (i) restrict the processing of his or her Data so that it is stored but not actively processed (e.g., while the Corporation assesses whether the Participant is entitled to have Data erased) and (ii) receive a copy of the Data provided pursuant to this Agreement or generated by the Participant, in a common machine-readable format. To exercise his or her rights, the Participant may contact the local human resources representative. The Participant may also contact the relevant data protection supervisory authority, as he or she has the right to lodge a complaint. The data protection officer may be contacted at dataprotection@sk.uss.com.

Annual Grant Agreement – February 2024 United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement United States Steel Corporation, a Delaware corporation (herein called the “Corporation”), grants to the employee of the employing company identified below (the “Participant”) the number of Restricted Stock Units (“RSUs”) set forth below, each of which is a bookkeeping entry representing the equivalent in value of one share of the class of common stock of the Corporation set forth below: Name of Participant: PARTICIPANT NAME Name of Employing Company (The company recognized by the Corporation on Date Hereof: as employing the Participant) Number of RSUs Granted: # RSUs Date of Grant: GRANT DATE By accepting this Award in any manner and within the time period prescribed by the Corporation, the Participant agrees that (1) these RSUs are granted under and governed by the terms and conditions of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan, as the same may be amended from time to time (the “Plan”) and the provisions of this Restricted Stock Unit Grant Agreement, including (i) the Terms and Conditions contained herein, (ii) if applicable to the Participant under Section 11 hereof, the Confidentiality and Proprietary Rights Agreement attached as Exhibit A and the Non-Solicitation and Non-Competition Agreement attached as Exhibit B, and (iii) any special provisions for the Participant’s country of residence set out on Exhibit C (collectively, the “Agreement”), (2) he or she has reviewed the Plan and the Agreement in their entirety, and (3) he or she has had an opportunity to obtain the advice of counsel prior to accepting this Award and fully understands all provisions of the Plan and the Agreement. United States Steel Corporation By:_______________________ Authorized Officer Terms and Conditions 1. Award: The Corporation has granted to the Participant the number of RSUs set forth in this Agreement. Each RSU represents the right to receive one share of the Corporation’s common stock (a “Share”) on the date specified in Section 6 below in settlement of each RSU that has vested as provided in Sections 3, 4 or 5 below. Unless and until the RSUs are vested in the manner set forth in Section 3, 4, or 5 below, the Participant will have no right to the settlement of any such RSUs or any right to receive any Shares. Prior to settlement of any vested RSUs, such RSUs will represent an unsecured obligation of the Corporation, payable (if at all) only from the general assets of the Corporation. 2. Restriction Period: The restriction period with regard to the RSUs shall commence on the date the RSUs are granted and end on the date the RSUs are settled as provided in Section 6 below. During the restriction period, the Participant shall not sell, transfer, assign, pledge or otherwise encumber or dispose of any portion of the RSUs, and any attempt to sell, transfer, assign, pledge or encumber any portion of the RSUs prior to the end of the restriction period shall have no effect. During the restriction period, the Participant shall not be entitled to vote any Shares that may be received upon settlement of any vested RSUs and shall not receive dividends paid on those Shares. The Participant shall be entitled to receive dividend equivalents in cash; provided, however, the dividend equivalents shall not vest or be paid to the Participant unless and to the extent the underlying RSUs vest as provided in Section 3, 4, or 5 of this Agreement. 3. Change in Control: If the Participant’s employment is terminated within two years following a Change in Control involuntarily (except for Cause) or, in the case of a Participant designated by the Corporation as executive management at the time of the Change in Control (“Executive Management”), voluntarily for Good Reason, each unvested RSU will immediately vest, except as otherwise determined by the Corporation with respect to any Participant who is not Executive Management. 4. Termination of Employment: The full unvested Number of RSUs Granted will immediately vest upon the Participant’s death during employment or upon Termination of employment due to becoming Disabled or on or after attainment of Normal Retirement Age, and a prorated Number of RSUs Granted that are scheduled to vest during the current Vesting Year will vest upon Termination of employment on or after attainment of Early Retirement Age or Termination under circumstances which would qualify the Participant for benefits under a severance plan of the Corporation, including the execution of any general release required under the severance plan, based upon the number of complete months worked during the Vesting Year in which such Termination of employment occurs. Except as provided in Section 3, in this Section 4 and in Section 5, all unvested RSUs will be forfeited automatically upon any other Termination of employment (including but not limited to any voluntary termination by the Participant or any Termination by the Corporation or the Employing Company for Cause or without Cause), such forfeiture being without consideration or without further action required of the Corporation or Employing Company. 5. Vesting: Subject to Sections 3 and 4, the RSUs shall vest as follows: (a) upon the first anniversary of the Date of Grant, one-third of the Number of RSUs Granted shall vest, provided that the Participant is employed by an Employing Company on such anniversary, (b) upon the second anniversary of the Date of Grant, an additional one-third of the Number of RSUs Granted shall vest, provided that the Participant is employed by an Employing Company on such anniversary, and (c) upon the third anniversary of the Date of Grant, the remaining one-third of the Number of RSUs Granted shall vest, provided that the Participant is employed by an Employing Company on such anniversary. All fractional unvested RSUs, if any, resulting from the ratable vesting shall vest as whole RSUs upon the latest vesting date.

-2- Except as provided in Sections 3 and 4 of this Agreement, notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in the event of the Participant’s Termination of employment, regardless of the reason for such Termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any, the Participant’s right to vest in the RSUs, if any, will terminate effective as of the date that the Participant is no longer actively employed by an Employing Company and will not be extended by any notice period (i.e., active employment would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant's employment agreement, if any). The Committee shall have the exclusive discretion to determine when the Participant is no longer actively employed for purposes of the RSUs. 6. Settlement: RSUs that have vested shall be paid in Shares, along with any dividend equivalents with respect to those vested RSUs, within 45 days after the applicable vesting date, provided, however, that any RSUs that vest as a result of the attainment of Normal Retirement Age shall be paid as if those RSUs had vested pursuant to Section 5, subject to Section 16 hereof. The Corporation shall have no obligation to issue Shares unless and until the Participant has satisfied any applicable tax withholding obligations pursuant to Section 12 below and such issuance otherwise complies with all applicable law. Upon vesting and settlement of the RSUs, Shares shall be delivered free of all restrictions on transferability or forfeiture except for restrictions required by applicable laws and/or regulations, and issued in the Participant’s name (or, in the event of the Participant’s death prior to such termination or such issuance, to the Participant’s estate) for the number of Shares subject to vested RSUs. The Participant shall not be entitled to delivery of any portion of the Shares until the corresponding portion of the RSUs has vested. 7. Adjustments and Recoupment: The number of RSUs awarded is subject to adjustment as provided in Section 8 of the Plan. The Participant shall be notified of such adjustment and such adjustment shall be binding upon the Corporation and the Participant. This Award shall be administered in accordance with, and is subject to, any recoupment policies and provisions prescribed by the Plan; including but not limited to Section 7.07 thereof and all clawback and recoupment policies or provisions required by law from time to time. In its sole discretion, the Committee shall have the authority to amend, waive or apply the terms of any clawback or recoupment policies or provisions, to the extent necessary or advisable to comply with applicable laws, as determined by the Committee. 8. Interpretation and Amendments: This Award, the vesting and delivery of RSUs, and the issuance of Shares upon vesting are subject to, and shall be administered in accordance with, the provisions of the Plan, as the same may be amended by the Committee from time to time, provided that no amendment may, without the consent of the Participant, affect the rights of the Participant under this Award in a materially adverse manner. For purposes of the foregoing sentence, an amendment that affects the tax treatment of the RSUs or that is necessary to comply with securities or other laws applicable to the issuance of Shares shall not be considered as affecting the Participant’s rights in a materially adverse manner. All capitalized terms not otherwise defined herein shall have the meaning assigned to such terms in the Plan. In the event of a conflict between the Plan and this Agreement, unless this Agreement specifies otherwise, the Plan shall control. 9. Compliance with Laws: The obligations of the Corporation and the rights of the Participant are subject to all applicable laws, rules, and regulations including, without limitation, the U.S. Securities Exchange Act of 1934, as amended; the U.S. Securities Act of 1933, as amended; the U.S. Internal Revenue Code of 1986, as amended; and any other applicable U.S. and foreign laws. No Shares will be issued or delivered to the Participant under the Plan unless and until there has been compliance with such applicable laws. 10. Acceptance of Award: This Award is contingent on the Participant’s acceptance of the Award in the manner and within the time period established by the Corporation. The Award shall be forfeited without further action by the Corporation and shall not be payable if it is not accepted by the Participant in the manner and within the time period established by the Corporation. 11. Confidentiality, Non-Solicitation and Non-Competition: If a Participant is employed in the United States in a position below the rank of Senior Vice President of the Corporation on the Date of Grant, then the Participant agrees and understands that (a) by accepting this Award the Participant shall be bound by and subject to the terms of the Confidentiality and Proprietary Rights Agreement attached to this Agreement and incorporated herein as Exhibit A and, to the extent permitted by law, the terms and conditions of the Non-Solicitation and Non-Competition Agreement attached to this Agreement and incorporated herein as Exhibit B; provided, however, that the Non-Solicitation and Non-Competition Agreement shall not be applicable to those Participants employed by Big River Steel (“BRS”) or Vice Presidents of the Corporation who are subject to similar noncompete provisions in prior agreements outside of the Plan with BRS or the Corporation, as applicable, and (b) notwithstanding any other terms or conditions of the Plan or this Agreement to the contrary, in addition to any other remedies available at law, all unvested RSUs will be forfeited immediately and without further action by the Corporation in the event the Participant fails to comply with or breaches any of the obligations and restrictions under Exhibits A or B of this Agreement. 12. Withholding Taxes: The Participant acknowledges that, regardless of any action taken by the Corporation or the Employing Company, the ultimate liability for any or all income tax, social security, payroll tax, payment on account or other tax-related withholding or liability in connection with any aspect of the RSUs, including the grant, vesting, or settlement of the RSUs or the subsequent sale of Shares (“Tax-Related Items”) is and remains his or her responsibility and may exceed the amount withheld by the Corporation or the Employing Company. Furthermore, the Participant acknowledges that the Corporation and/or the Employing Company (a) make no representations or undertakings regarding the treatment of any Tax-Related Items; and (b) do not commit to and are under no obligation to structure the terms of the grant of the RSUs or any aspect of the Participant’s participation in the Plan to reduce or eliminate his or her liability for Tax-Related Items or to achieve any particular tax result. Further, if the Participant has become subject to Tax-Related Items in more than one jurisdiction between the Date of Grant and the date of any relevant taxable event, the Participant acknowledges that the Corporation and/or the Employing Company (or former Employing Company, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction. Prior to the relevant taxable event, the Participant shall pay or make adequate arrangements satisfactory to the Corporation and/or the Employing Company to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Corporation and/or the Employing Company, or their respective agents, at their discretion, to satisfy the obligations with regard to all applicable Tax-Related Items by one or a combination of the following methods: (1) withholding from Participant’s wages or other cash compensation paid to Participant by the Corporation and/or the Employing Company; (2) withholding from proceeds of the sale of Shares issued upon vesting of the RSUs either through a voluntary sale or through a mandatory sale arranged by the Corporation (on Participant’s behalf pursuant to this authorization) through such means as the Corporation may determine in its sole discretion (whether through a broker or otherwise); or (3) withholding in Shares to be issued upon vesting of the RSUs. If the Corporation gives the Participant the power to choose the withholding method, and the Participant does not make a choice, then the Corporation will at its discretion withhold in Shares as stated in alternative (3) herein.

-3- To avoid negative accounting treatment, the Corporation may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding amounts or other applicable withholding rates. If the Corporation withholds at a rate other than the minimum statutory rate, such as the maximum withholding rate, then the refund of any over-withheld amount shall be paid in cash and the Participant will have no entitlement to the Common Stock equivalent. If the Tax-Related Items are satisfied by withholding in Shares issuable upon vesting of the RSUs, for tax purposes, the Participant is deemed to have been issued the full number of Shares subject to the RSUs, notwithstanding that a number of the Shares are held back solely for the purpose of paying the Tax-Related Items. Finally, the Participant shall pay to the Corporation or the Employing Company, any amount of Tax-Related Items due as a result of any aspect of the Participant’s participation in the Plan. The Participant understands that no Shares or proceeds from the sale of Shares shall be delivered to Participant, notwithstanding the lapse of the restrictions on the RSUs, unless and until the Participant shall have satisfied any obligation for Tax-Related Items with respect thereto. Notwithstanding anything in this Section 12 to the contrary, if the RSUs are considered nonqualified deferred compensation subject to Section 409A, the fair market value of the Shares withheld together with the amount of cash withheld may not exceed the liability for Tax-Related Items. 13. Nature of the Award: Nothing herein shall be construed as giving the Participant any right to be retained in the employ of an Employing Company or affect any right which the Employing Company may have to terminate the employment of such Participant. Further, by accepting this grant of RSUs, the Participant acknowledges that: (a) the Plan is established voluntarily by the Corporation, it is discretionary in nature and may be modified, amended, suspended or terminated by the Corporation at any time, to the extent permitted by its terms; (b) the grant of the RSUs is voluntary and occasional and does not create any contractual or other right to receive future grants of RSUs, or benefits in lieu of RSUs, even if RSUs have been granted in the past; (c) all decisions with respect to future RSU grants, if any, will be at the sole discretion of the Committee or its delegee, as applicable; (d) the Participant is voluntarily participating in the Plan; (e) the RSUs and the Shares subject to the RSUs are extraordinary items which do not constitute compensation of any kind for services of any kind rendered to the Corporation or to the Employing Company, and which are outside the scope of the Participant’s employment contract, if any; (f) the RSUs and the Shares subject to the RSUs are not part of normal or expected compensation or salary for purposes of calculating any severance, resignation, termination, dismissal, redundancy, end-of-service payments, bonuses, long-service awards, pension or retirement benefits, or similar payments and in no event should be considered as compensation for, or relating in any way to, past services for the Corporation or the Employing Company or any Subsidiary or affiliate of the Corporation; (g) the RSUs and the Shares subject to the RSUs are not intended to replace any pension rights or compensation; (h) the grant of RSUs will not be interpreted to form an employment contract or relationship with the Corporation, the Employing Company or any Subsidiary or affiliate of the Corporation; (i) the future value of the Shares underlying the RSUs is unknown, indeterminable, and cannot be predicted with certainty; (j) no claim or entitlement to compensation or damages arises from forfeiture of the RSUs resulting from termination of the Participant’s employment by the Corporation or the Employing Company (for any reason whether or not in breach of applicable labor laws or the terms of the Participant’s employment agreement, if any), and in consideration of the grant of the RSUs to which the Participant is not otherwise entitled, the Participant irrevocably agrees never to institute any claim against the Corporation or the Employing Company, waives his or her ability, if any, to bring any such claim, and releases the Corporation and the Employing Company from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, the Participant shall be deemed irrevocably to have agreed not to pursue such claim and agreed to execute any and all documents necessary to request dismissal or withdrawal of such claim; (k) it is the Participant’s sole responsibility to investigate and comply with any applicable exchange control laws in connection with the issuance and delivery of Shares pursuant to the vesting of the RSUs; (l) the Corporation and the Employing Company are not providing any tax, legal or financial advice, nor are the Corporation or the Employing Company making any recommendations regarding the Participant’s participation in the Plan or the Participant’s acquisition or sale of the Shares underlying the RSUs; (m) the Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan; (n) unless otherwise provided in the Plan or by the Corporation in its discretion, the RSUs and the benefits evidenced by this Agreement do not create any entitlement to have the RSUs or any such benefits transferred to, or assumed by, another company nor to be exchanged, cashed out or substituted for, in connection with any corporate transaction affecting the Shares of the Corporation; and (o) the following provisions apply only if the Participant is providing services outside the United States: (i) the RSU and Shares subject to the RSU are not part of normal or expected compensation or salary for any purpose; and (ii) the Participant acknowledges and agrees that neither the Corporation, the Employing Company nor any Subsidiary or affiliate of the Corporation shall be liable for any foreign exchange rate fluctuation between the local currency and the United States Dollar that may affect the value of the RSUs or of any amounts due to Participant pursuant to the settlement of the RSUs or the subsequent sale of any Shares acquired upon settlement. 14. Data Privacy: (a) The Participant hereby explicitly, unambiguously and voluntarily consents to the collection, use, disclosure and transfer, in electronic or other form, of his or her personal data as described in this Agreement and any other RSUs materials (“Data”) by and among, as applicable, any Employing Company and the Corporation for the exclusive purpose of implementing, administering, and managing his or her participation in the Plan. (b) The Participant understands that any Employing Company and the Corporation may collect, maintain, process and disclose certain personal information about him or her, including, but not limited to, his or her name, home address and telephone number, date of birth, social insurance number or other identification number, salary, nationality, job title, any Shares or directorships held in the Corporation, details of all equity awards or any other entitlement to Shares awarded, canceled, exercised, vested, unvested or outstanding in his or her favor, for the exclusive purpose of implementing, administering and managing the Plan.

-4- (c) The Participant acknowledges that Data will be transferred to any broker as designated by the Corporation and/or one or more stock plan service provider(s) selected by the Corporation, which may assist the Corporation with the implementation, administration and management of the Plan. The Participant understands that the recipients of the Data may be located in the United States or elsewhere, and that the recipient’s country (e.g., the United States) may have different, including less stringent, data privacy laws and protections than his or her country. The Participant understands that if he or she resides outside the United States, he or she may request a list with the names and addresses of any potential recipients of the Data by contacting his or her local human resources representative. The Participant authorizes the Corporation and any other possible recipients that may assist the Corporation (presently or in the future) with implementing, administering and managing the Plan to receive, possess, use, retain and transfer the Data, in electronic or other form, for the sole purposes of implementing, administering and managing his or her participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Participant may elect to deposit any Shares acquired upon vesting of the RSUs. (d) The Participant understands that Data will be held only as long as is necessary to implement, administer and manage his or her participation in the Plan, including to maintain records regarding participation. The Participant understands that if he or she resides in certain jurisdictions, to the extent required by applicable laws, he or she may, at any time, request access to Data, request additional information about the storage and processing of Data, require any necessary amendments to Data or refuse or withdraw the consents given by accepting these RSUs, in any case without cost, by contacting in writing his or her local human resources representative. Further, the Participant understands that he or she is providing these consents on a purely voluntary basis. If the Participant does not consent or if he or she later seeks to revoke his or her consent, his or her engagement as a service provider with any Employing Company and the Corporation will not be adversely affected; the only consequence of refusing or withdrawing his or her consent is that the Corporation will not be able to grant him or her RSUs under the Plan or administer or maintain RSUs. Therefore, the Participant understands that refusing or withdrawing his or her consent may affect his or her ability to participate in the Plan (including the right to retain these RSUs). The Participant understands that he or she may contact his or her local human resources representative for more information on the consequences of his or her refusal to consent or withdrawal of consent. 15. Electronic Delivery: The Corporation may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means or request the Participant’s consent to participate in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through any online or electronic system established and maintained by the Corporation or another third party designated by the Corporation. Such means of electronic delivery may include but do not necessarily include the delivery of a link to a Corporation intranet or the Internet site of a third party involved in administering the Plan, the delivery of the document via e-mail or such other means of electronic delivery specified by the Corporation. The Participant consents to the electronic delivery of the Plan documents and the Agreement. The Participant acknowledges that he or she may receive from the Corporation a paper copy of any documents delivered electronically at no cost to the Participant by contacting the Corporation by telephone or in writing. The Participant further acknowledges that the Participant will be provided with a paper copy of any documents if the attempted electronic delivery of such documents fails. Similarly, the Participant understands that the Participant must provide the Corporation or any designated third-party administrator with a paper copy of any documents if the attempted electronic delivery of such documents fails. The Participant may revoke his or her consent to the electronic delivery of documents or may change the electronic mail address to which such documents are to be delivered (if the Participant has provided an electronic mail address) at any time by notifying the Corporation of such revoked consent or revised e-mail address by telephone, postal service or electronic mail. The Participant agrees that the foregoing online or electronic participation in the Plan shall have the same force and effect as documentation executed in hardcopy written form. Finally, the Participant understands that he or she is not required to consent to electronic delivery of documents. 16. Code Section 409A: It is the intent that the vesting or the payments of RSUs set forth in this Agreement shall either qualify for exemption from or comply with the requirements of Section 409A, and any ambiguities herein will be interpreted to so comply. The Corporation reserves the right, to the extent the Corporation deems necessary or advisable in its sole discretion, to unilaterally amend or modify this Agreement as may be necessary to ensure that all vesting or settlements provided under this Agreement are made in a manner that qualifies for exemption from or complies with Section 409A; provided, however, that the Corporation makes no representation that the vesting or settlement of RSUs provided under this Agreement will be exempt from Section 409A and makes no undertaking to preclude Section 409A from applying to the vesting or settlement of RSUs provided under this Agreement. In the event that any payment to a U.S. taxpayer or Participant otherwise subject to U.S. taxation, with respect to an RSU is considered to be based upon separation from service, and not compensation the Participant could receive without separating from service, then such amounts may not be paid until the first business day of the seventh month following the date of the Participant’s termination if the Participant is a “specified employee” under Section 409A of the Code upon his separation from service. 17. Severability: In the event that any provision in this Agreement is held invalid or unenforceable, such provision will be severable from, and such invalidity or unenforceability will not be construed to have any effect on, the remaining provisions of this Agreement. 18. Language: If the Participant has received this Agreement or any other document related to the Plan translated into a language other than English and if the meaning of the translated version is different than the English version, the English version will control. 19. Governing Law and Venue: This Agreement shall be construed and enforced in accordance with the laws of the Commonwealth of Pennsylvania, without regard to the conflicts of laws thereof. For purposes of litigating any dispute that arises under this grant or this Agreement, the parties hereby submit to and consent to the exclusive jurisdiction of the Commonwealth of Pennsylvania, and agree that such litigation shall be conducted in the courts of Allegheny County, Pennsylvania, or the federal courts for the United States for the Western District of Pennsylvania, where this grant is made and/or to be performed. 20. Exhibit C: Notwithstanding any provisions in this Agreement, the RSUs shall be subject to any special terms and conditions set forth in Exhibit C to this Agreement for the Participant’s country. Moreover, if the Participant relocates to one of the countries included in Exhibit C, the special terms and conditions for such country will apply to the Participant, to the extent the Corporation determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or facilitate the administration of the Plan. 21. Insider Trading Restrictions/Market Abuse Laws: The Participant acknowledges that, depending on the Participant's country of residence, the Participant may be subject to insider trading restrictions and/or market abuse laws, which may affect the Participant's ability to acquire or sell Shares or rights to Shares (e.g., RSUs) under the Plan during such times as the Participant is considered to have “inside information” regarding the Corporation (as defined by any applicable laws in the Participant's country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable insider trading policy maintained by the Corporation. The Participant acknowledges that it is the Participant's responsibility to comply with any applicable restrictions, and the Participant is advised to speak to his or her personal advisor on this matter.

-5- 22. Imposition of Other Requirements: The Corporation reserves the right to impose other requirements on the Participant’s participation in the Plan, on the RSUs and on any Shares acquired under the Plan, to the extent the Corporation determines it is necessary or advisable in order to comply with local law, and to require the Participant to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing. 23. Headings: Headings of paragraphs and sections used in this Agreement are for convenience only and are not part of this Agreement, and must not be used in construing it. 24. Waiver: The Participant acknowledges that a waiver by the Corporation of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by the Participant. 25. No Advice Regarding Grant: The Corporation is not providing any tax, legal or financial advice, nor is the Corporation making any recommendations or assessments regarding the Participant’s participation in the Plan, or his or her acquisition or sale of the underlying Shares. The Participant is hereby advised to consult with his or her own personal tax, legal and financial advisors regarding his or her participation in the Plan before taking any action related to the Plan. 26. Definitions: In addition to the capitalized terms defined in the Plan, the following terms as used herein shall have the following meanings when used with initial capital letters: (a) “Early Retirement Age” shall mean the Participant’s (1) attainment of age 55 and completion of ten (10) years of service with the Corporation or an Employing Company, or (2) completion of thirty (30) years of service with the Corporation or an Employing Company. (b) “Normal Retirement Age” shall mean, with respect only to a Participant who is a U.S. employee and is not a participant in the United States Steel Corporation Supplemental Pension Program, the later of (1) six (6) months following the Date of Grant, or (2) the earlier of (i) attainment of age 65, or (ii) attainment or age 60 and completion of five (5) years of service with the Corporation or an Employing Company. (c) “Termination” shall mean the applicable employee’s termination of employment. For purposes of this Agreement, (i) for U.S. taxpayers, Termination and words of similar effect shall be construed consistent with a “separation from service” under Section 409A of the Code to the extent required by Section 409A of the Code, and (ii) for non-U.S. taxpayers, Termination and words of similar effect shall mean that the Participant is no longer actively employed by an Employing Company, without regard to any notice period (i.e., active employment would not include any contractual notice period or any period of “garden leave” or similar period mandated under employment laws in the jurisdiction where the Participant is employed or the terms of the Participant’s employment agreement, if any). (d) “Vesting Year” shall mean, with respect to the period prior to the third anniversary of the Date of Grant, each one-year period commencing on the Date of Grant or the first or second anniversary thereof, as applicable, and ending on the next following anniversary of the Date of Grant.

-8- 8. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 9. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts-of- law principles. 10. Entire Agreement. Unless specifically provided herein, this Agreement contains all the understandings and representations between the Employee and the Employer pertaining to the subject matter hereof and supersedes all prior and contemporaneous understandings, agreements, representations, and warranties, both written and oral, with respect to such subject matter. 11. Modification and Waiver. No provision of this Agreement may be amended or modified unless such amendment or modification is agreed to in writing and signed by the Employee and by a duly authorized officer of the Employer (other than the Employee). No waiver by either of the Parties of any breach by the other party hereto of any condition or provision of this Agreement to be performed by the other party hereto shall be deemed a waiver of any similar or dissimilar provision or condition at the same or any prior or subsequent time, nor shall the failure of or delay by either of the Parties in exercising any right, power, or privilege hereunder operate as a waiver thereof to preclude any other or further exercise thereof or the exercise of any other such right, power, or privilege. 12. Severability. If any portion of this Agreement shall be held unenforceable, the parties agree that a court of competent jurisdiction may modify the agreement (by adding or removing language) or sever unenforceable provisions in order to render this Agreement enforceable to the fullest extent permitted by law. 13. Captions. Captions and headings of the sections and paragraphs of this Agreement are intended solely for convenience and no provision of this Agreement is to be construed by reference to the caption or heading of any section or paragraph.

-9- EXHIBIT B Non-Solicitation and Non-Competition Agreement This Non-Solicitation and Non-Competition Agreement (“Agreement”) is attached as Exhibit B to, and incorporated as a part of, the United States Steel Corporation Restricted Stock Unit Grant Agreement (“RSU Agreement”) and is applicable to the Participant named in the RSU Agreement to the extent provided in Section 11 of the RSU Agreement. For purposes of this Agreement, United States Steel Corporation and its subsidiaries or affiliates are described as the “Employer” or “Company”, the Participant named in the RSU Agreement is described as the “Employee”, “me” or “I”, and the Employer and the Employee are collectively referred to herein as the “Parties”. 1. Definitions. (a) “Competing Products” means products or services sold by the Company, or any prospective product or service the Company took steps to develop for which I had any responsibility during the 24 months preceding the termination of my employment. (b) “Restricted Territory” means the geographic territory (i) within sixty miles of the area in which I worked or (ii) over which I had responsibility or (iii) that the nature and scope of my duties could have affected, during the 24 months preceding the termination of my employment, whichever is greatest. Restricted territory may be national or global depending on the nature of my duties and the knowledge acquired in the performance of those duties. 2. Non-Competition. During my employment and for 12 months after termination of my employment for any reason, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) own any business (other than less than 5% ownership in a publicly traded company) that sells Competing Products in the Restricted Territory; or (b) work in the Restricted Territory for any person or entity that sells Competing Products, in any role. 3. Non-Solicitation of Customers & Employees. During my employment and for 12 months after termination of my employment, I will not directly or indirectly, on behalf of myself or in conjunction with any other person or entity: (a) solicit business from any customer or prospective customer of the Company with whom I had contact during the last 24 months of my employment, for purposes of offering goods or services similar to or competitive with those offered by the Company; or (b) solicit any employee or independent contractor of the Company, who worked for the Company during the 6 months preceding termination of my employment, to work for me or my new employer. For purposes of this section, solicit means: (a) Any comments, conduct or activity that would influence a customer’s decision to do business with the Company, regardless of who initiates contact; and/or (b) Any comments, conduct or activity that would influence an employee’s decision to resign his employment with the Company or accept employment with my new company, regardless of who initiates contact. 4. Acknowledgment. Nothing in this Agreement shall alter the at-will status of the employment relationship between the Employer and the Employee, pursuant to which either the Employer or the Employee may terminate the employment relationship at any time, with or without cause, and with or without notice. 5. Change of Position. If the Employer changes Employee’s position or title with the Employer, or transfers Employee from one affiliate to another, this Agreement and Employee’s obligations hereunder will remain in force. 6. Protections for Affiliates and Subsidiaries. This Agreement is intended to benefit all Company subsidiaries and affiliates for which Employee performs services, has customer contact, or about which Employee receives Confidential Information. Therefore, any subsidiary or affiliate of Employer that may be adversely affected by a breach may enforce this Agreement regardless of which entity employs Employee at the time. 7. Successors and Assigns. (a) The Employer may assign this Agreement to any subsidiary or corporate affiliate, or to any successor or assign (whether direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all the business or assets of the Employer. This Agreement shall inure to the benefit of the Employer and permitted successors and assigns. (b) No Assignment by the Employee. The Employee may not assign this Agreement or any part hereof. Any purported assignment by the Employee shall be null and void from the initial date of purported assignment. 8. Governing Law. This Agreement, for all purposes, shall be construed in accordance with the laws of Pennsylvania without regard to conflicts-of- law principles.

-11- EXHIBIT C Additional Terms and Conditions of the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement TERMS AND CONDITIONS This Exhibit C includes additional terms and conditions that govern the RSUs granted to the Participant under the Plan if he or she works or resides in one of the countries listed below. If the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the RSUs are granted, the Corporation shall, in its discretion, determine to what extent the terms and conditions contained herein shall be applicable to the Participant. Certain capitalized terms used but not defined in this Exhibit C have the meanings set forth in the Plan and/or the Agreement. NOTIFICATIONS This Exhibit C also includes information regarding exchange controls and certain other issues of which the Participant should be aware with respect to participation in the Plan. The information is based on the laws in effect in the applicable countries as of December 2023. Such laws are often complex and change frequently. As a result, the Corporation strongly recommends that the Participant not rely on the information in this Exhibit C as the only source of information relating to the consequences of his or her participation in the Plan because the information may be out of date at the time that the Participant vests in the RSUs or sells Shares acquired under the Plan. In addition, the information contained herein is general in nature and may not apply to the Participant’s particular situation, and the Corporation is not in a position to assure the Participant of a particular result. Accordingly, the Participant is advised to seek appropriate professional advice as to how the relevant laws in his or her country may apply to the Participant’s situation. Finally, if the Participant is a citizen or resident of a country other than that in which the Participant is currently working or transfers employment to another country after the RSUs are granted, the information contained herein may not be applicable. SLOVAK REPUBLIC NOTIFICATIONS Foreign Assets Reporting Information. If the Participant permanently resides in the Slovak Republic and, apart from being employed, carries on business activities as an independent entrepreneur (in Slovakian, podnikatel), the Participant will be obligated to report his or her foreign assets (including any foreign securities such as Shares acquired under the Plan) to the National Bank of Slovakia if the value of the foreign assets exceeds a certain legally designated amount. These reports must be submitted on a monthly basis by the 15th day of the respective calendar month, as well as on a quarterly basis by the 15th day of the calendar month following the respective calendar quarter, using notification form DEV (NBS) 1-12, which may be found at the National Bank of Slovakia's website at www.nbs.sk. Furthermore, if the above preconditions are met (i.e., permanent residence in the Slovak Republic and entrepreneurial activities in addition to the employment), the Participant will be obliged to report certain additional information under Section 34b of Act No. 566/1992 Coll. on National Bank of Slovakia as amended. This information is mostly of general nature and contains personal identification data of the Participant - place and date of birth, birth certificate number, academic degree, etc., as well as telephone and fax number and e-mail address of the Participant, if any. Securities Disclaimer. The grant of the RSUs is exempt from the requirement to publish a prospectus under the EU Prospectus Regulation as implemented in the Slovak Republic. Personal Data Protection. The national identification number (in Slovak: rodné číslo) may be used for the identification of the Participant only if required to achieve the determined purpose of processing. It is forbidden to make the national identification number public; the only exception is when the data subject made the national identification number public by itself. UNITED KINGDOM NOTIFICATIONS Securities Disclosure. The Agreement is not an approved prospectus for the purposes of section 85(1) of the Financial Services and Markets Act 2000 (“FSMA”) and no offer of transferable securities to the public (for the purposes of section 102B of FSMA) is being made in connection with the Plan. The Plan and the RSUs are exclusively available in the UK to bona fide employees and former employees and any other UK subsidiary of the Corporation. Taxation. The RSUs are not intended to be tax-qualified or tax-preferred for purposes of taxation or National Insurance Contributions applicable in the United Kingdom. Tax Consultation. Participant understands that he or she may suffer adverse tax consequences as a result of Participant’s acquisition or disposition of the Shares. Participant represents that he or she will consult with any tax advisors that Participant deems appropriate in connection with the acquisition or disposition of the Shares and that Participant is not relying on the Employing Company and the Corporation for any tax advice.

-12- Tax Withholding. The Participant acknowledges that, regardless of any action taken by the Corporation, the ultimate liability for all tax-related items is and remains the responsibility of the Participant and may exceed the amount actually withheld by the Corporation. Prohibition Against Insider Dealing. The Participant should be aware of the UK's insider dealing rules under the Criminal Justice Act 1993, which may affect transactions under the Plan such as the acquisition or sale of Shares acquired under the Plan, if the Participant has inside information regarding the Corporation. If the Participant is uncertain whether the insider dealing rules apply, the Corporation recommends that the Participant consults with a legal advisor. The Corporation cannot be held liable if the Participant violates the UK's insider dealing rules. The Participant is responsible for ensuring his or her compliance with these rules. UNITED KINGDOM, EUROPEAN UNION AND EUROPEAN ECONOMIC AREA For Participants who reside in the United Kingdom, European Union or the European Economic Area, the following provisions replace the Data Privacy provisions in Section 14 of the Agreement. (a) Data Collected and Purposes of Collection. The Participant understands that the Corporation, acting as the controller, as well as the Employing Company, may collect, to the extent permissible under applicable law, certain personal information about the Participant, including name, home address and telephone number, information necessary to process the RSUs (e.g., mailing address for a check payment or bank account wire transfer information), date of birth, social insurance number or other identification number, salary, nationality, job title, employment location, any Shares or directorships held in the Corporation (but only where needed for legal or tax compliance), any other information necessary to process mandatory tax withholding and reporting, details of all RSUs granted, canceled, vested, unvested or outstanding in the Participant’s favor, and where applicable service termination date and reason for termination (all such personal information is referred to as “Data”). The Data is collected from the Participant, any Employing Company and the Corporation, for the exclusive purpose of implementing, administering and managing the Plan pursuant to the terms of this Agreement. The legal basis (that is, the legal justification) for processing the Data is to perform this Agreement. The Data must be provided in order for the Participant to participate in the Plan and for the parties to this Agreement to perform their respective obligations thereunder. If the Participant does not provide Data, he or she will not be able to participate in the Plan and become a party to this Agreement. (b) Transfers and Retention of Data. The Participant acknowledges and understands that the Employing Company will transfer Data to the Corporation for purposes of plan administration. The Employing Company and the Corporation may also transfer the Participant’s Data to other service providers (such as accounting firms, payroll processing firms, or tax firms), as may be selected by the Corporation in the future, to assist the Corporation with the implementation, administration and management of this Agreement. The Participant understands that the recipients of the Data may be located in the United States, a country that does not benefit from an adequacy decision issued by the European Commission and is not listed by the Swiss supervisory authority as a country with adequate data protection legislation. Where a recipient is located in a country that does not benefit from an adequacy decision or adequacy listing, the transfer of the Data to that recipient will be made pursuant to EU-U.S. Data Privacy Framework or European Commission-approved standard contractual clauses when required by applicable law, a copy of which may be obtained by contacting dataprotection@sk.uss.com or complianceofficer@uss.com. The Participant understands that Data will be held only as long as is necessary to implement, administer and manage the Participant’s rights and obligations under this Agreement, and for the duration of the relevant statutes of limitations, which may be longer than the term of this Agreement. (c) The Participant’s Rights in Respect of Data. The Corporation will take steps in accordance with applicable legislation to keep Data accurate, complete and up-to-date. The Participant is entitled to have any inadequate, incomplete or incorrect Data corrected (that is, rectified). The Participant also has the right to request access to his or her Data as well as additional information about the processing of that Data. Further, the Participant is entitled to object to the processing of Data or have the Participant’s Data erased, under certain circumstances. Subject to conditions set forth in applicable law, the Participant also is entitled to (i) restrict the processing of his or her Data so that it is stored but not actively processed (e.g., while the Corporation assesses whether the Participant is entitled to have Data erased) and (ii) receive a copy of the Data provided pursuant to this Agreement or generated by the Participant, in a common machine-readable format. To exercise his or her rights, the Participant may contact the local human resources representative. The Participant may also contact the relevant data protection supervisory authority, as he or she has the right to lodge a complaint. The data protection officer may be contacted at dataprotection@sk.uss.com.


Title of each class	Trading Symbol	Name of each exchange on which registered
United States Steel Corporation Common Stock	X	New York Stock Exchange
United States Steel Corporation Common Stock	X	Chicago Stock Exchange


			Page
PART I – FINANCIAL INFORMATION
	Item 1.	Financial Statements:
		Condensed Consolidated Statement of Operations (Unaudited)	1
		Condensed Consolidated Statement of Comprehensive Income (Unaudited)	2
		Condensed Consolidated Balance Sheet (Unaudited)	3
		Condensed Consolidated Statement of Cash Flows (Unaudited)	4
		Notes to Condensed Consolidated Financial Statements (Unaudited)	5
	Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	26
	Item 3.	Quantitative and Qualitative Disclosures about Market Risk	36
	Item 4.	Controls and Procedures	36
PART II – OTHER INFORMATION
	Item 1.	Legal Proceedings	38
	Item 1A.	Risk Factors	41
	Item 2	Purchases of Equity Securities by Issuer and Affiliated Purchasers	41
	Item 3	Defaults upon Senior Securities	41
	Item 4.	Mine Safety Disclosure	41
	Item 5.	Other Information	41
	Item 6.	Exhibits	42
SIGNATURE			43
WEB SITE POSTING			43


	Three Months Ended March 31,
(Dollars in millions, except per share amounts)	2024		2023
Net sales:
Net sales	$	3,500	$	3,912
Net sales to related parties (Note 19)	660		558
Total (Note 6)	4,160		4,470
Operating expenses (income):
Cost of sales (excludes items shown below)	3,665		3,953
Selling, general and administrative expenses	119		99
Depreciation, depletion and amortization	210		221
(Earnings) loss from investees	(14)		13
Asset impairment charges	7		4

Restructuring and other charges (Note 20)	6		1

Other losses (gains), net	13		(10)
Total	4,006		4,281
Earnings before interest and income taxes	154		189
Interest expense	2		27
Interest income	(32)		(30)
Loss on debt extinguishment	1		—
Other financial costs	11		6
Net periodic benefit income	(33)		(42)
Net gain from investments related to active employee benefits (Note 16)	(4)		(22)
Net interest and other financial benefits	(55)		(61)
Earnings before income taxes	209		250
Income tax expense (Note 12)	38		51
Net earnings	171		199
Less: Net earnings attributable to noncontrolling interests	—		—
Net earnings attributable to United States Steel Corporation	$	171	$	199
Earnings per common share (Note 13):
Earnings per share attributable to United States Steel Corporation stockholders:
'-Basic	$	0.76	$	0.87
'-Diluted	$	0.68	$	0.78


	Three Months Ended March 31,
(Dollars in millions)	2024		2023
Net earnings	$	171	$	199
Other comprehensive income (loss), net of tax:
Changes in foreign currency translation adjustments	(36)		32
Changes in pension and other employee benefit accounts	(7)		(10)
Changes in derivative financial instruments	43		(44)
Changes in fair value of active employee benefit investments	—		3
Total other comprehensive income (loss), net of tax	—		(19)
Comprehensive income including noncontrolling interest	171		180
Comprehensive income attributable to noncontrolling interest	—		—
Comprehensive income attributable to United States Steel Corporation	$	171	$	180


(Dollars in millions)	March 31, 2024		December 31, 2023
Assets
Current assets:
Cash and cash equivalents (Note 7)	$	2,221	$	2,948
Receivables, less allowance of $39 and $38	1,530		1,390
Receivables from related parties (Note 19)	192		158
Inventories (Note 8)	2,157		2,128
Other current assets	321		319
Total current assets	6,421		6,943
Long-term restricted cash (Note 7)	32		32
Operating lease assets	99		109
Property, plant and equipment	24,557		23,975
Less accumulated depreciation and depletion	13,750		13,582
Total property, plant and equipment, net	10,807		10,393
Investments and long-term receivables, less allowance of $3 in both periods	785		761
Intangibles, net (Note 9)	431		436
Deferred income tax benefits (Note 12)	12		19
Goodwill (Note 9)	920		920
Other noncurrent assets	941		838
Total assets	$	20,448	$	20,451
Liabilities
Current liabilities:
Accounts payable and other accrued liabilities	$	2,749	$	2,889
Accounts payable to related parties (Note 19)	199		139
Payroll and benefits payable	322		442
Accrued taxes	223		222
Accrued interest	55		70
Current operating lease liabilities	41		44
Short-term debt and current maturities of long-term debt (Note 15)	159		142
Total current liabilities	3,748		3,948
Noncurrent operating lease liabilities	65		73
Long-term debt, less unamortized discount and debt issuance costs (Note 15)	4,082		4,080
Employee benefits	116		126
Deferred income tax liabilities (Note 12)	629		587
Deferred credits and other noncurrent liabilities	516		497
Total liabilities	9,156		9,311
Contingencies and commitments (Note 21)
Stockholders’ Equity (Note 17):
Common stock (287,604,696 and 285,959,739 shares issued) (Note 13)	288		286
Treasury stock, at cost (62,771,459 shares and 62,288,523 shares)	(1,441)		(1,418)
Additional paid-in capital	5,266		5,253
Retained earnings	7,040		6,880
Accumulated other comprehensive income (Note 18)	46		46
Total United States Steel Corporation stockholders’ equity	11,199		11,047
Noncontrolling interests	93		93
Total liabilities and stockholders’ equity	$	20,448	$	20,451


			☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


			☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934


Non-cash investing and financing activities:
Change in accrued capital expenditures	$	(102)	$	(226)
U. S. Steel common stock issued for employee/non-employee director stock plans	35		28
Capital expenditures funded by finance lease borrowings	32		24
Export Credit Agreement (ECA) financing	—		1


(In millions) Three Months Ended March 31, 2024	Customer Sales		Intersegment Sales		Net Sales		Earnings (loss) from investees		Earnings (loss) before interest and income taxes
Flat-Rolled	$	2,391	$	62	$	2,453	$	5	$	34
Mini Mill	578		125		703		—		99
USSE	918		7		925		—		16
Tubular	271		4		275		9		57
Total reportable segments	4,158		198		4,356		14		206
Other	2		—		2		—		(2)
Reconciling Items and Eliminations	—		(198)		(198)		—		(50)
Total	$	4,160	$	—	$	4,160	$	14	$	154

Three Months Ended March 31, 2023
Flat-Rolled	$	2,570	$	90	$	2,660	$	(16)	$	(7)
Mini Mill	553		70		623		—		12
USSE	838		6		844		—		(34)
Tubular	505		1		506		3		232
Total reportable segments	4,466		167		4,633		(13)		203
Other	4		—		4		—		3
Reconciling Items and Eliminations	—		(167)		(167)		—		(17)
Total	$	4,470	$	—	$	4,470	$	(13)	$	189


(In millions)	March 31, 2024		December 31, 2023
Flat-Rolled	$	7,443	$	7,546
Mini Mill (a)	8,059		7,569
USSE	2,351		2,229
Tubular	1,001		1,002
Total reportable segments	$	18,854	$	18,346
Other	$	132	$	140
Corporate, reconciling items, and eliminations (b)	1,462		1,965
Total assets	$	20,448	$	20,451


Three Months Ended March 31, 2024	Flat-Rolled		Mini Mill		USSE		Tubular		Other		Total
Semi-finished	$	28	$	—	$	25	$	—	$	—	$	53
Hot-rolled sheets	492		314		475		—		—		1,281
Cold-rolled sheets	945		98		77		—		—		1,120
Coated sheets	760		165		300		—		—		1,225
Tubular products	—		—		12		268		—		280
All Other (a)	166		1		29		3		2		201
Total	$	2,391	$	578	$	918	$	271	$	2	$	4,160
(a) Consists primarily of sales of raw materials and coke making by-products.


		As of March 31, 2024						As of December 31, 2023
(In millions)	Useful Lives	Gross Carrying Amount		Accumulated Amortization		Net Amount		Gross Carrying Amount		Accumulated Amortization		Net Amount
Customer relationships	22 Years	$	413	$	60	$	353	$	413	$	56	$	357
Patents	5-15 Years	17		14		3		17		13		4
Energy Contract	2 Years	—		—		—		54		54		—
Total amortizable intangible assets		$	430	$	74	$	356	$	484	$	123	$	361


	Pension Benefits				Other Benefits
(In millions)	2024		2023		2024		2023
Service cost	$	7	$	8	$	1	$	1
Interest cost	53		55		15		17
Expected return on plan assets	(74)		(82)		(18)		(15)
Amortization of prior service cost (credit)	4		5		(7)		(6)
Amortization of actuarial net loss (gain)	11		3		(16)		(18)
Net periodic benefit cost (income), excluding below	1		(11)		(25)		(21)
Multiemployer plans	20		21		—		—

Net periodic benefit cost (income)	$	21	$	10	$	(25)	$	(21)


	2024			2023
Grant Details	Shares(a)	Fair Value(b)		Shares(a)	Fair Value(b)

Restricted Stock Units	796,820	$	47.36	1,274,520	$	29.90
Performance Awards (c)
TSR	—	$	—	185,120	$	37.41
ROCE (d)	230,350	$	46.96	357,020	$	29.35


20-trading day Average Closing Stock Price Achievement During 7-Year Period Beginning on Grant Date(a)		Percentage of Performance-Based Stock Options Exercisable
$	35.00	33.33	%
$	45.00	33.33	%
$	55.00	33.34	%


Hedge Contracts	Classification	March 31, 2024		March 31, 2023
Natural gas (in mmbtus)	Commodity purchase swaps	15,688,000		32,976,000
Tin (in metric tons)	Commodity purchase swaps	—		1,045
Zinc (in metric tons)	Commodity purchase swaps	18,933		23,783
Electricity (in megawatt hours)	Commodity purchase swaps	110,880		367,200
Iron ore (in metric tons)	Commodity purchase swaps	—		280,000

Iron ore (in metric tons)	Sales swaps	408,233		1,087,500
Hot-rolled coils (in tons)	Sales swaps	202,000		215,000
Foreign currency (in millions of euros)	Foreign exchange forwards	€	428	€	383
Foreign currency (in millions of dollars)	Foreign exchange forwards	$	16	$	85


Year	Redemption Price
2026	105.000	%
2027	104.000	%
2028	103.000	%
2029	102.000	%
2030	101.000	%
2031 and thereafter	100.000	%


Balance Sheet Location (in millions)	March 31, 2024		December 31, 2023
Designated as Hedging Instruments
Accounts receivable	$	15	$	4
Accounts payable	30		81

Other long-term liabilities	—		2


	Gain (Loss) on Derivatives in AOCI					Amount of Gain (Loss) Recognized in Income
(In millions)	Three Months Ended March 31, 2024		Three Months Ended March 31, 2023		Location of Reclassification from AOCI	Three Months Ended March 31, 2024		Three Months Ended March 31, 2023
Sales swaps	$	50	$	(31)	Net sales	$	(30)	$	3
Commodity purchase swaps	(3)		(18)		Cost of sales (a)	(16)		(9)
Foreign exchange forwards	12		(8)		Cost of sales	1		4
(a) Costs for commodity purchase swaps are recognized in cost of sales as products are sold.


(In millions)	Issuer/Borrower	Interest Rates %	Maturity	March 31, 2024		December 31, 2023
2037 Senior Notes	U. S. Steel	6.650	2037	274		274
2026 Senior Convertible Notes	U. S. Steel	5.000	2026	349		350
2029 Senior Notes	U. S. Steel	6.875	2029	475		475
2029 Senior Secured Notes	Big River Steel	6.625	2029	720		720
Environmental Revenue Bonds	U. S. Steel	4.125 - 6.750	2024 - 2053	1,164		1,164
Environmental Revenue Bonds	Big River Steel	4.500 - 4.750	2049	752		752
Finance leases and all other obligations	U. S. Steel	Various	2024 - 2029	177		157
Finance leases and all other obligations	Big River Steel	Various	2024 - 2027	167		167
Export Credit Agreement	U. S. Steel	Variable	2031	97		97
Credit Facility Agreement	U. S. Steel	Variable	2027	—		—
Big River Steel ABL Facility	Big River Steel	Variable	2026	—		—
USSK Credit Agreement	U. S. Steel Kosice	Variable	2026	—		—
USSK Credit Facility	U. S. Steel Kosice	Variable	2024	—		—
Total Debt				4,175		4,156
Less unamortized discount, premium, and debt issuance costs				(66)		(66)
Less short-term debt, long-term debt due within one year, and short-term issuance costs				159		142
Long-term debt				$	4,082	$	4,080


	March 31, 2024										December 31, 2023
	Level 1		Level 2		Level 3		measured at NAV (a)		Total		Level 1		Level 2		Level 3		measured at NAV (a)		Total
Asset Category
Fixed Income
Corporate bonds - U.S.	$	—	$	179	$	—	$	—	$	179	$	—	$	191	$	—	$	—	$	191
Corporate bonds - Non-U.S.	—		54		—		—		54		—		56		—		—		56
U.S. government bonds	—		59		—		—		59		—		86		—		—		86
Mortgage and asset-backed securities	—		15		—		—		15		—		12		—		—		12
Total fixed income	$	—	$	307	$	—	$	—	$	307	$	—	$	345	$	—	$	—	$	345
Alternatives
Private credit partnerships	—		—		57		69		126		—		—		58		64		122
Other alternatives	—		—		—		18		18		—		—		—		18		18
Total alternatives	$	—	$	—	$	57	$	87	$	144	$	—	$	—	$	58	$	82	$	140
Commingled Funds	—		—		—		62		62		—		—		—		61		61
Other (b)	27		—		—		—		27		25		—		(1)		—		24
Total assets at fair value	$	27	$	307	$	57	$	149	$	540	$	25	$	345	$	57	$	143	$	570
(a) In accordance with ASC Topic 820, certain investments that were measured at net asset value per share (or its equivalent) have not been classified in the fair value hierarchy.
(b) Includes cash, accrued income, and miscellaneous payables.


Three Months Ended March 31, 2024 (In millions)	Total		Retained Earnings		Accumulated Other Comprehensive Income		Common Stock		Treasury Stock		Paid-in Capital		Non- Controlling Interest
Balance at beginning of year	$	11,140	$	6,880	$	46	$	286	$	(1,418)	$	5,253	$	93
Comprehensive income (loss):
Net earnings	171		171		—		—		—		—		—
Other comprehensive income (loss), net of tax:
Pension and other benefit adjustments	(7)		—		(7)		—		—		—		—
Currency translation adjustment	(36)		—		(36)		—		—		—		—
Derivative financial instruments	43		—		43		—		—		—		—
Active employee benefit investments	—		—		—		—		—		—		—
Employee stock plans	(8)		—		—		2		(23)		13		—

Dividends paid on common stock	(12)		(12)		—		—		—		—		—
Other	1		1		—		—		—		—		—
Balance at March 31, 2024	$	11,292	$	7,040	$	46	$	288	$	(1,441)	$	5,266	$	93


Three Months Ended March 31, 2023 (In millions)	Total		Retained Earnings		Accumulated Other Comprehensive Loss		Common Stock		Treasury Stock		Paid-in Capital		Non- Controlling Interest
Balance at beginning of year	$	10,311	$	6,030	$	(85)	$	283	$	(1,204)	$	5,194	$	93
Comprehensive income (loss):
Net earnings	199		199		—		—		—		—		—
Other comprehensive income (loss), net of tax:
Pension and other benefit adjustments	(10)		—		(10)		—		—		—		—
Currency translation adjustment	32		—		32		—		—		—		—
Derivative financial instruments	(44)		—		(44)		—		—		—		—
Active employee benefit investments	3		—		3		—		—		—		—
Employee stock plans	(9)		—		—		2		(22)		11		—
Common stock repurchased	(75)		—		—		—		(75)		—		—
Dividends paid on common stock	(12)		(12)		—		—		—		—		—
Balance at March 31, 2023	$	10,395	$	6,217	$	(104)	$	285	$	(1,301)	$	5,205	$	93


(In millions)	Pension and Other Benefit Items		Foreign Currency Items		Unrealized (Loss) Gain on Derivatives		Active Employee Benefit Investments		Total
Balance at December 31, 2023	$	(241)	$	334	$	(52)	$	5	$	46
Other comprehensive (loss) income before reclassifications	—		(36)		16		—		(20)
Amounts reclassified from AOCI (a)	(7)		—		27		—		20
Net current-period other comprehensive (loss) income	(7)		(36)		43		—		—
Balance at March 31, 2024	$	(248)	$	298	$	(9)	$	5	$	46

Balance at December 31, 2022	$	(322)	$	280	$	(43)	$	—	$	(85)
Other comprehensive income (loss) before reclassifications	1		32		(65)		3		(29)
Amounts reclassified from AOCI (a)	(11)		—		21		—		10
Net current-period other comprehensive (loss) income	(10)		32		(44)		3		(19)
Balance at March 31, 2023	$	(332)	$	312	$	(87)	$	3	$	(104)


	Amount reclassified from AOCI
	Three Months Ended March 31,
Details about AOCI components (in millions)	2024		2023
Amortization of pension and other benefit items (a)
Prior service credits	$	(3)	$	(1)
Actuarial gains	(6)		(16)

Total pensions and other benefits items	(9)		(17)
Derivative reclassifications to Condensed Consolidated Statements of Operations	38		28

Total before tax	29		11
Tax benefit	(9)		(1)
Net of tax	$	20	$	10


(In millions)	Employee Related Costs		Exit Costs		Non-cash Charges		Total
Balance at December 31, 2023	$	110	$	30	$	—	$	140
Additional charges	1		5		—		6

Cash payments/utilization(b)	(44)		(8)		—		(52)
Balance at March 31, 2024	$	67	$	27	$	—	$	94
(a) Includes releases of accruals to reflect the current estimate of costs to complete approved restructuring programs.
(b) $10 million of payments were made from the pension fund trust assets in the Employee Related Costs column during the three months ended March 31, 2024.


Period ended	Opening Number of Claims	Claims Dismissed, Settled and Resolved	New Claims	Closing Number of Claims
December 31, 2021	2,445	200	260	2,505
December 31, 2022	2,505	230	235	2,510
December 31, 2023	2,510	235	230	2,505
March 31, 2024	2,505	70	65	2,500


(In millions)	Three Months Ended March 31, 2024
Beginning of period	$	107
Accruals for environmental remediation deemed probable and reasonably estimable	—
Adjustments for changes in estimates	—
Obligations settled	(1)
End of period	$	106


	As of		As of
(In millions)	March 31, 2024		December 31, 2023
Accounts payable	$	28	$	27
Deferred credits and other noncurrent liabilities	78		80
Total	$	106	$	107


Remainder of 2024	2025	2026	2027	2028	Later Years	Total
$422	$299	$267	$208	$164	$711	$2,071


	Three Months Ended March 31,
(Dollars in millions, excluding intersegment sales)	2024		2023		% Change
Flat-Rolled	$	2,391	$	2,570	(7)%
Mini Mill	578		553		5%
USSE	918		838		10%
Tubular	271		505		(46)%
Total sales from reportable segments	4,158		4,466		(7)%
Other	2		4		(50)%
Net sales	$	4,160	$	4,470	(7)%


	Steel Products (a)
	Volume		Price		Mix		FX (b)		Other (c)		Net Change
Flat-Rolled	(9)	%	2	%	1	%	—	%	(1)	%	(7)	%
Mini Mill	(14)	%	16	%	2	%	—	%	—	%	4	%
USSE	21	%	(8)	%	(4)	%	1	%	—	%	10	%
Tubular	(12)	%	(36)	%	2	%	—	%	—	%	(46)	%
(a) Excludes intersegment sales.
(b) Foreign currency translation effects.
(c) Primarily sales of raw materials and coke making by-products.


		Three Months Ended March 31,				% Change
(Dollars in millions)		2024		2023
Flat-Rolled		$	34	$	(7)	586	%
Mini Mill		99		12		725	%
USSE		16		(34)		147	%
Tubular		57		232		(75)	%
	Total earnings from reportable segments	206		203		1	%
Other		(2)		3		(167)	%
	Segment earnings before interest and income taxes	204		206		(1)	%
Items not allocated to segments:
	Restructuring and other charges	(6)		(1)
	Stock-based compensation expense	(11)		(11)
	Asset impairment charges	(7)		(4)
	Environmental remediation charges	(2)		—
	Strategic alternatives review process costs	(23)		—
	Granite City idling costs	(1)		—


	Other charges, net	—		(1)
Total earnings before interest and income taxes		$	154	$	189	(19)	%


Cash Conversion Cycle	First Quarter of 2024		Fourth Quarter of 2023
	$ millions	Days	$ millions	Days
Accounts receivable, net (a)	$1,723	36	$1,549	34

+ Inventories (b)	$2,157	53	$2,128	53

- Accounts Payable and Other Accrued Liabilities (c)	$2,810	70	$2,867	68
= Cash Conversion Cycle (d)		19		19


(Dollars in millions)
Cash and cash equivalents	$	2,221
Amount available under Credit Facility Agreement	1,746
Amount available under Big River Steel - Revolving Line of Credit	350
Amount available under USSK Credit Agreement and USSK Credit Facility	178
Total estimated liquidity	$	4,495


3.1						Amended and Restated Certificate of Incorporation of United States Steel Corporation, dated April 25, 2017. (Incorporated by reference to Exhibit 3.1 to United States Steel Corporation’s Form 8-K filed on April 28, 2017, Commission File Number 1-16811.)

3.2						Amended and Restated By-Laws of United States Steel Corporation, as of January 31, 2023. (Incorporated by reference to Exhibit 3.1 to United States Steel Corporation’s Form 8-K filed on February 2, 2023, Commission File Number 1-16811.)

10.1						Administrative Procedures for the Executive Management Annual Incentive Compensation Plan under the United States Steel Corporation 2016 Omnibus Incentive Compensation Plan, Effective February 27, 2024.

10.2						Form of United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Performance Share Award Grant Agreement (2024 ROCE Grants).

10.3						Form of United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement (2024 Retention Grants).

10.4						Form of United States Steel Corporation 2016 Omnibus Incentive Compensation Plan Restricted Stock Unit Grant Agreement (2024 Annual Grants).

31.1						Certification of Chief Executive Officer required by Rules 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as promulgated by the SEC pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2						Certification of Chief Financial Officer required by Rules 13a-14(a) or 15d-14(a) of the Securities Exchange Act of 1934, as promulgated by the SEC pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1						Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2						Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

95						Mine Safety Disclosure required under Section 1503 of the Dodd-Frank Wall Street Reform and Consumer Protection Act.

101						The following financial information from United States Steel Corporation's Quarterly Report on Form 10-Q for the quarter ended March 31, 2024 formatted in Inline XBRL (Extensible Business Reporting Language) includes: (i) the Condensed Consolidated Statement of Operations, (ii) the Condensed Consolidated Statement of Comprehensive Income, (iii) the Condensed Consolidated Balance Sheet, (iv) the Condensed Consolidated Statement of Cash Flows, and (v) Notes to the Condensed Consolidated Financial Statements.

104						Cover Page Interactive Data File - (formatted as Inline XBRL and contained in Exhibit 101).


UNITED STATES STEEL CORPORATION


By						/s/ Manpreet S. Grewal

						Manpreet S. Grewal
						Vice President, Controller & Chief Accounting Officer