UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 11-K
xANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.
For the fiscal year ended December 31, 2019
oTRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934.
For the transition period from to
Commission file number 1-6948
      A. Full title of the plan and the address of the plan, if different from that of the issuer named below:
SPX Corporation
Retirement Savings and Stock Ownership Plan
      B. Name of the issuer of the securities held pursuant to the plan and the address of its principal executive office:
SPX Corporation
13320-A Ballantyne Corporate Place
Charlotte, North Carolina 28277









Contents
Report Letter1-2
Statements of Net Assets Available for Benefits3
Statement of Changes in Net Assets Available for Benefits4
Notes to Financial Statements5-10
Schedule of Assets Held at End of YearSchedule 1



Report of Independent Registered Public Accounting Firm

To the Plan Administrator and Plan Participants
SPX Corporation Retirement Savings
and Stock Ownership Plan

Opinion on the Financial Statements
We have audited the accompanying statements of net assets available for benefits of the SPX Corporation Retirement Savings and Stock Ownership Plan (the “Plan”) as of December 31, 2019 and 2018, and the related statement of changes in net assets available for benefits for the year ended December 31, 2019, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the net assets of the Plan as of December 31, 2019 and 2018, and the changes in its net assets for the year ended December 31, 2019, in conformity with accounting principles generally accepted in the United States of America.

Basis of Opinion
The Plan’s management is responsible for these financial statements. Our responsibility is to express an opinion on the Plan’s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (“PCAOB”) and are required to be independent with respect to the Plan in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Plan is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Plan’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Supplemental Information
The supplemental information in the accompanying schedule of assets held at end of year as of December 31, 2019 has been subjected to audit procedures performed in conjunction with the audit of the Plan’s financial statements. The supplemental information is the responsibility of the

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Plan’s management. Our audit procedures included determining whether the supplemental information reconciles to the financial statements or the underlying accounting and other records, as applicable, and performing procedures to test the completeness and accuracy of the information presented in the supplemental information. In forming our opinion on the supplemental information, we evaluated whether the supplemental information, including its form and content, is presented in conformity with Department of Labor’s Rules and Regulations for Reporting under the Employee Retirement Income Security Act of 1974. In our opinion, the supplemental information is fairly stated, in all material respects, in relation to the financial statements as a whole.

/s/ Plante & Moran, PLLC
We have served as the Plan’s auditor since 2002.
Southfield, Michigan
June 11, 2020

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SPX Corporation Retirement Savings and
Stock Ownership Plan
Statements of Net Assets Available for Benefits
  December 31,
20192018
Assets
Participant-directed investments, at fair value:
Money market and cash investments$2,774,717  $2,173,345  
Mutual funds438,027,027  336,389,167  
Common stock93,631,994  80,396,841  
Common collective trust funds218,180,272  195,123,938  
Total participant-directed investments752,614,010  614,083,291  
Participant notes receivable9,791,950  9,734,184  
Net assets available for benefits$762,405,960  $623,817,475  
The accompanying notes are an integral part of these statements.


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SPX Corporation Retirement Savings and
Stock Ownership Plan
Statement of Changes in Net Assets Available for Benefits
Year Ended December 31, 2019
Additions
Net realized and unrealized gain on investments$134,364,583  
Interest and dividends39,924,525  
Interest on participant notes receivable581,582  
Contributions:
Employer10,775,894  
Participants18,553,925  
Rollovers3,217,553  
Total contributions32,547,372  
Total additions207,418,062  
Deductions
Distributions to participants or beneficiaries(68,326,918) 
Administrative expenses(502,659) 
Total deductions(68,829,577) 
Total net increase138,588,485  
Net assets available for benefits
Beginning of year623,817,475  
End of year$762,405,960  
The accompanying notes are an integral part of this statement.


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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018

Note 1 - Description of the Plan
The following description of the SPX Corporation Retirement Savings and Stock Ownership Plan (the “Plan”), as amended and restated effective October 1, 2010, provides only general information. Participants should refer to the Plan document for a complete description of the Plan’s provisions. The Plan became effective January 1, 1952 and is subject to the provisions of the Employee Retirement Income Security Act of 1974 (“ERISA”). The Plan operates as a leveraged employee stock ownership plan with a cash or deferred arrangement as described in Internal Revenue Code Section 401(k), and is designed to comply with Section 4975(e)(7) and the regulations thereunder of the Internal Revenue Code (the “Code”).
General - The Plan is a defined contribution plan that benefits employees of SPX Corporation (“SPX”, the “Employer” or the “Company”) who have met eligibility requirements.
Contributions - Participants can elect to defer a portion of their compensation as a pretax contribution to the Plan, up to the maximum allowed under the Plan and the Code.
As outlined in the Plan document, employer contributions are dependent upon the business unit or division of the Company where the participant is employed. In general, for participants other than those related to certain plans that have been previously merged into the Plan, the Company makes matching contributions equal to 100 percent of the participant’s pretax contributions up to the first 4 percent of compensation deferred and 50 percent of the participant’s pretax contributions in excess of 4 percent of compensation deferred up to a maximum of 6 percent of compensation deferred. These employer contributions are in the form of SPX Corporation common stock, are immediately vested and can be transferred at any time, subject to certain trading restrictions.
Employer contributions for participants related to certain plans that have been previously merged into the Plan are determined based on the respective collective bargaining agreements.
Participant Accounts - Each participant’s account is credited with the participant’s contributions, the Employer’s contributions, if any, and an allocation of Plan earnings.
Allocation of Plan earnings to participant accounts is based on the participant’s proportionate share of funds in each of the investment accounts. The benefit to which a participant is entitled is the benefit that can be provided from the participant’s account.
Participants elect to invest their account balances and contributions among various investment options selected by the SPX Corporation Retirement and Welfare Plan

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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018

Note 1 - Description of the Plan (Continued)
Administrative Committee (the “Committee”), including an option to invest in SPX Corporation common stock.
Vesting - Participants in the Plan are at all times 100 percent vested in their contributions and earnings thereon. Vesting in employer contributions is dependent upon the business unit or division of the Company where the participant is employed. In general, participants are 100 percent vested in employer contributions; however, there are certain employer contributions that vest over a five to six-year period. Any forfeitures may be used to pay expenses of the Plan or reduce the employer contributions in the year the forfeitures occur or in future years.
Payment of Benefits - Upon termination of service, a participant may elect to receive either a lump-sum distribution or monthly or yearly payments equal to the value of their account. Terminated participants with account balances in excess of $1,000 can also elect to wait until retirement age to receive benefits. A participant who experiences a financial hardship is eligible to receive a distribution from his or her plan account. The Plan also allows participants to withdraw certain portions of their balances attributed to certain benefit plans that have been previously merged into the Plan. All withdrawal payments are made by Fidelity Management Trust Company (the “Trustee” or “Fidelity”).
Employer Securities - Investment in SPX Corporation stock transferred to participants’ accounts by reason of the merger of the SPX Corporation Stock Ownership Plan on January 1, 1994 and stock allocated to participants’ accounts by reason of matching contributions as discussed above can be redirected to other investment options, subject to certain trading restrictions.
Participant Notes Receivable - A participant can borrow from the Plan an amount not to exceed the lesser of $50,000 or 50 percent of the participant’s vested account balance. The term of the participant note receivable may not exceed five years unless the participant note receivable is used in the purchase of a primary residence, in which case the term may be up to 15 years.
Participant notes receivable are collateralized by the balance in the participant’s account and bear interest at market rates as outlined in the Plan document. Principal and interest are paid ratably through payroll deductions. Other participant note receivable provisions are outlined in the Plan document.
Voting Rights - Each participant is entitled to exercise voting rights attributable to the shares allocated to their account. The Trustee is required to vote shares of common stock that have been allocated to participants, but for which the Trustee received no

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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018

Note 1 - Description of the Plan (Continued)
voting instructions, in the same manner and in the same proportion as the shares for which the Trustee received timely voting instructions.
Administration - The Company is the sponsor of the Plan. The Committee, as provided in the Plan document, is the plan administrator. The Trustee also functions as the investment manager.
Investment management fees and trustee fees are paid by the Plan in accordance with the Plan document.
Party-in-interest Transactions - Certain plan assets are in investment funds managed by Fidelity or its affiliates. Fidelity is the custodian of the Plan and, therefore, these transactions qualify as party-in-interest transactions as defined under ERISA guidelines. For the year ended December 31, 2019, transactions involving SPX Corporation common stock included sales of approximately $49,000,000 and purchases of approximately $35,000,000.
Termination - Although it has not expressed any intent to do so, the Company has the right to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. Upon termination of the Plan, participants become fully vested in their account balances.
Note 2 - Summary of Significant Accounting Policies
Participant Notes Receivable - Participant notes receivable are recorded at their unpaid principal balances plus any accrued interest. Participant notes receivable are written off when deemed uncollectible.
Investments - The Plan's investments are stated at fair value. Common collective trust fund investments are valued at net asset value per share ("NAV"), which is based on the fair value of the underlying assets. There are no unfunded commitments or other redemption notice requirements related to these investments. All other investments are valued based on quoted market prices. See Note 4 for additional information. Dividend income is accrued on the ex-dividend date.
The methods described above may produce a fair value calculation that may not be indicative of net realizable value or reflective of future fair values. Furthermore, while the Plan believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different fair value measurement at the reporting date.
Benefit Payments - Distributions to participants are recorded when paid.

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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018


Note 2 - Summary of Significant Accounting Policies (Continued)
Income Tax Status - The Plan constitutes a qualified plan under Sections 401(a) and 401(k) of the Code and the related trust is exempt from federal income tax under Section 501(a) of the Code. The Plan obtained its determination letter dated May 3, 2017, in which the Internal Revenue Service stated that the Plan, as designed, was in compliance with the applicable requirements of the Code. Although the Plan has been amended subsequently, the plan administrator believes the Plan is being operated in compliance with the applicable requirements of the Code. Therefore, no provision for income taxes has been included in the Plan’s financial statements. The plan administrator believes the Plan is no longer subject to tax examinations for years prior to 2016.
Use of Estimates - The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of additions and deductions during the reporting period. Actual results could differ from those estimates.
Risks and Uncertainties - The Plan invests in various investment securities. Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect participants’ account balances and the amounts reported in the statement of net assets available for benefits.
Note 3 - Reconciliation of Financial Statements to Form 5500 (Annual Return/Report of Employee Benefit Plan)
The net assets on the financial statements differ from the net assets on Form 5500 due to common collective trust funds being recorded at NAV on the financial statements and at fair value on Form 5500. The net assets on the financial statements were lower than Form 5500 by $1,099,221 at December 31, 2019 and higher than Form 5500 by $972,903 at December 31, 2018. Accordingly, the net increase in the net assets available for benefits on the financial statements is $2,072,124 lower than as reported on Form 5500 for the year ended December 31, 2019.
Note 4 - Fair Value Measurements
Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.

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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018

Note 4 - Fair Value Measurements (continued)
Accounting standards require certain assets and liabilities be reported at fair value in the financial statements and provide a framework for establishing that fair value. The framework for determining fair value is based on a hierarchy that prioritizes the inputs and valuation techniques used to measure fair value.
The Plan utilizes market data or assumptions that it believes market participants would use in pricing the asset or liability, including assumptions about risk and the risks inherent in the inputs to the valuation technique. These inputs can be readily observable quoted prices in active markets for identical assets or liabilities (“Level 1”), significant other observable inputs (“Level 2”) or significant unobservable inputs (“Level 3”). The Plan’s assessment of the significance of particular inputs to these fair value measurements requires judgment and considers factors specific to each asset or liability. In instances where inputs used to measure fair value fall into different levels in the fair value hierarchy, fair value measurements in their entirety are categorized based on the lowest input that is significant to the valuation.
Assets measured at fair value are as follows:
Assets Measured at Fair Value at December 31, 2019
Investments
(at fair value)
Level 1Level 2Level 3
Mutual funds$438,027,027  $438,027,027  —  —  
Common stock - SPX Corporation stock93,631,994  93,631,994  —  —  
Money market and cash investments2,774,717  2,774,717  —  —  
Total assets in the fair value hierarchy534,433,738  534,433,738  —  —  
Investments measured at net asset value per share:
Common collective trust funds218,180,272  
Total investments at fair value$752,614,010  
Assets Measured at Fair Value at December 31, 2018
Investments
(at fair value)
Level 1Level 2Level 3
Mutual funds$336,389,167  $336,389,167  —  —  
Common stock - SPX Flow stock25,255,420  25,255,420  —  —  
Common stock - SPX Corporation stock55,141,421  55,141,421  —  —  
Money market and cash investments2,173,345  2,173,345  —  —  
Total assets in the fair value hierarchy418,959,353  418,959,353  —  —  
Investments measured at net asset value per share:
Common collective trust funds195,123,938  
Total investments at fair value$614,083,291  
There were no changes during 2019 to the Plan’s valuation techniques used to measure investment fair values on a recurring basis. There were no transfers between the three levels of the fair value hierarchy during 2019 and 2018. The Plan’s policy is to recognize transfers between levels at the beginning of the fiscal year.
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SPX Corporation Retirement Savings and
Stock Ownership Plan
Notes to Financial Statements
December 31, 2019 and 2018

Note 5 - Subsequent Events
On March 11, 2020, the World Health Organization declared the outbreak of Coronavirus Disease ("COVID-19") as a pandemic. The intensity, duration and governmental response to the COVID-19 pandemic are all highly uncertain and could negatively impact the global financial markets. The future impact of COVID-19 on the Plan’s investments is uncertain.

On March 27, 2020, Congress passed the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act, which included several relief provisions to qualified plans and their participants. The provisions of the CARES Act may be effective and operationalized immediately, prior to amending the plan document. The plan has adopted relief provisions included in the CARES Act that allow participants who have been affected by the COVID-19 pandemic to (i) request qualifying Coronavirus-related distributions, (ii) increase the Plan's loan limit to a maximum equal to the lesser of $100,000 or 100% of their vested balance and delay loan repayment deadlines for up to a year, and (iii) postpone required minimum distributions for one year.


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Schedule of Assets Held at End of Year
Form 5500, Schedule H, Item 4i
EIN 38-1016240, Plan 005
December 31, 2019
Identity of IssuerDescriptionCostCurrent Value
Mutual funds:
FidelityFidelity U.S. Bond Index Fund*$15,580,082  
FidelityFidelity 500 Index Fund*63,811,670  
FidelityFidelity Extended Market Index Fund*6,381,739  
FidelityFidelity International Index Fund*4,132,099  
FidelityFidelity Freedom Index Income Fund*2,018,056  
FidelityFidelity Freedom Index 2005 Fund*1,749,882  
FidelityFidelity Freedom Index 2010 Fund*4,304,969  
FidelityFidelity Freedom Index 2015 Fund*10,476,139  
FidelityFidelity Freedom Index 2020 Fund*35,223,428  
FidelityFidelity Freedom Index 2025 Fund*49,770,954  
FidelityFidelity Freedom Index 2030 Fund*40,911,287  
FidelityFidelity Freedom Index 2035 Fund*24,786,602  
FidelityFidelity Freedom Index 2040 Fund*17,062,408  
FidelityFidelity Freedom Index 2045 Fund*10,600,470  
FidelityFidelity Freedom Index 2050 Fund*6,804,338  
FidelityFidelity Freedom Index 2055 Fund*3,972,270  
FidelityFidelity Freedom Index 2060 Fund*1,315,111  
FidelityFidelity Freedom Index 2065 Fund*5,972  
FidelityDFA U.S. Targeted Value Portfolio*36,339,223  
FidelityFidelity International Discovery Fund*22,884,834  
FidelityWilliam Blair Small-Mid Cap Growth Fund*28,132,844  
FidelityAmerican Beacon Large Cap Value Fund*33,489,993  
FidelityPIMCO Total Return Fund*18,272,657  
FidelityCommon stock - SPX Corporation stock*93,631,994  
Common collective trust funds:
FidelityFidelity Managed Income Portfolio II*81,159,770  
Fidelity Fidelity Growth Company Commingled*137,020,502  
FidelityMoney market and cash investments*2,774,717  
ParticipantsParticipant notes receivable bearing interest at rates from 3.25 percent to 10.50 percent-9,791,950  
Total net investments$762,405,960  
________________________
* Cost information not required
Schedule 1


SIGNATURES

The Plan. Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employee benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.

SPX CORPORATION RETIREMENT SAVINGS AND
STOCK OWNERSHIP PLAN
By:SPX Corporation Retirement and Welfare Plan Administrative Committee
Date:June 11, 2020By:/s/ Scott W. Sproule
Scott W. Sproule
Vice President, Chief Financial Officer and Treasurer, SPX Corporation, and Member of the SPX Corporation Retirement and Welfare Plan Administrative Committee



Exhibit Index
Exhibit No.Description
23.1

Document

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm


We consent to the incorporation by reference in the registration statement (Nos. 333-29843, 333-70245, 333-69252, 333-139351, and 333-186817) on Form S-8 of our report dated June 11, 2020 appearing in the annual report on Form 11-K of SPX Corporation Retirement Savings and Stock Ownership Plan as of December 31, 2019 and 2018 and for the year ended December 31, 2019.






/s/ Plante & Moran, PLLC
Southfield, Michigan
June 11, 2020