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Table of Contents
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 
FORM 10-Q
(Mark One) 
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended March 31, 2021
or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from ______________ to ______________
Commission File Number: 001-13718 
MDC Partners Inc.
(Exact name of registrant as specified in its charter)
Canada 98-0364441
(State or other jurisdiction of
incorporation or organization)
 (IRS Employer Identification No.)
   
One World Trade Center, Floor 65
 
New York,New York10007
(Address of principal executive offices) (Zip Code)
(646) 429-1800
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Class A Subordinate Voting Shares, no par valueMDCANASDAQ
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes     No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).  Yes  No  
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated Filer  Accelerated Filer
Non-accelerated Filer  Smaller reporting company 
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes   No  
The number of common shares outstanding as of April 30, 2021 was 77,181,293 Class A subordinate voting shares and 3,743 Class B multiple voting shares.


Table of Contents

MDC PARTNERS INC.
 
QUARTERLY REPORT ON FORM 10-Q
 
TABLE OF CONTENTS
 
  Page
 PART I. FINANCIAL INFORMATION 
Item 1.
 
 
 
 
 
 
Item 2.
Item 3.
Item 4.
   
 PART II. OTHER INFORMATION 
Item 1.
Item 1A.
Item 2.
Item 3.
Item 4.
Item 5.
Item 6.

References in this Quarterly Report on Form 10-Q to “MDC Partners,” “MDC,” the “Company,” “we,” “us” and “our” refer to MDC Partners Inc. and, unless the context otherwise requires or otherwise is expressly stated, its subsidiaries. References in this Quarterly Report on Form 10-Q to “Partner Firms” generally refer to the Company’s subsidiary agencies.
All dollar amounts are stated in U.S. dollars unless otherwise stated.
                
                Note About Forward-Looking Statements
This document contains forward-looking statements. The Company’s representatives may also make forward-looking statements orally or in writing from time to time. Statements in this document that are not historical facts, including, statements about the Company’s beliefs and expectations, recent business and economic trends, potential acquisitions, and estimates of amounts for redeemable noncontrolling interests and deferred acquisition consideration, constitute forward-looking statements. These statements are based on current plans, estimates and projections, and are subject to change based on a number of factors, including those outlined in this section. These forward-looking statements are subject to various risks and uncertainties, many of which are outside the Company’s control. Therefore, you should not place undue reliance on such statements. Forward-looking statements speak only as of the date they are made, and the Company undertakes no obligation to update publicly any of them in light of new information or future events, if any.
2

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Forward-looking statements involve inherent risks and uncertainties. A number of important factors could cause actual results to differ materially from those contained in any forward-looking statements. Such risk factors include, but are not limited to, the following:
risks associated with international, national and regional unfavorable economic conditions that could affect the Company or its clients, including as a result of the novel coronavirus pandemic (“COVID-19”);
the effects of the outbreak of COVID-19, including the measures to reduce its spread, and the impact on the economy and demand for our services, which may precipitate or exacerbate other risks and uncertainties;
an inability to realize expected benefits of the proposed redomiciliation of the Company from the federal jurisdiction of Canada to the State of Delaware (the “Redomiciliation”) and the subsequent combination of the Company’s business with the business of the subsidiaries of Stagwell Media LP (“Stagwell”) that own and operate a portfolio of marketing services companies (the “Business Combination” and, together with the Redomiciliation, the “Proposed Transaction”) or the occurrence of difficulties in connection with the Proposed Transaction;
adverse tax consequences in connection with the Proposed Transaction for the Company, its operations and its shareholders, that may differ from the expectations of the Company, including that future changes in tax law, potential increases to corporate tax rates in the United States and disagreements with the tax authorities on the Company’s determination of value and computations of its attributes may result in increased tax costs;
the occurrence of material Canadian federal income tax (including material “emigration tax”) as a result of the Proposed Transaction;
the impact of uncertainty associated with the Proposed Transaction on the Company’s businesses;
direct or indirect costs associated with the Proposed Transaction, which could be greater than expected;
the risk that a condition to completion of the Proposed Transaction may not be satisfied and the Proposed Transaction may not be completed;
the risk of parties challenging the Proposed Transaction or the impact of the Proposed Transaction on the Company’s debt arrangements;
the Company’s ability to attract new clients and retain existing clients;
reduction in client spending and changes in client advertising, marketing and corporate communications requirements;
financial failure of the Company’s clients;
the Company’s ability to retain and attract key employees;
the Company’s ability to achieve the full amount of its stated cost saving initiatives;
the Company’s implementation of strategic initiatives;
the Company’s ability to remain in compliance with its debt agreements and the Company’s ability to finance its contingent payment obligations when due and payable, including but not limited to those relating to redeemable noncontrolling interests and deferred acquisition consideration;
the successful completion and integration of acquisitions which complement and expand the Company’s business capabilities; and
foreign currency fluctuations.
Investors should carefully consider these risk factors, other risk factors described herein, and the additional risk factors outlined in more detail in the Company’s 2020 Form 10-K, filed with the Securities and Exchange Commission (the “SEC”) on March 16, 2021 and accessible on the SEC’s website at www.sec.gov., under the caption “Risk Factors,” and in the Company’s other SEC filings.

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PART I. FINANCIAL INFORMATION
Item 1.    Financial Statements
MDC PARTNERS INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(thousands of United States dollars, except per share amounts)
 Three Months Ended March 31,
 20212020
Revenue:  
Services$307,585 $327,742 
Operating Expenses
Cost of services sold186,921 222,694 
Office and general expenses83,946 66,354 
Depreciation and amortization8,176 9,206 
Impairment and other losses875 161 
279,918 298,415 
Operating income27,667 29,327 
Other Income (expenses):
Interest expense and finance charges, net(19,065)(15,611)
Foreign exchange gain (loss)2,080 (14,757)
Other, net614 16,334 
(16,371)(14,034)
Income before income taxes and equity in earnings of non-consolidated affiliates11,296 15,293 
Income tax expense1,302 13,500 
Income before equity in earnings of non-consolidated affiliates9,994 1,793 
Equity in losses of non-consolidated affiliates(493) 
Net income9,501 1,793 
Net income attributable to the noncontrolling interest(4,491)(791)
Net income attributable to MDC Partners Inc.5,010 1,002 
Accretion on and net income allocated to convertible preference shares(4,089)(3,440)
Net income (loss) attributable to MDC Partners Inc. common shareholders$921 $(2,438)
Income (loss) Per Common Share:
Basic   
Net income (loss) attributable to MDC Partners Inc. common shareholders$0.01 $(0.03)
Diluted
Net income (loss) attributable to MDC Partners Inc common shareholders$0.01 $(0.03)
Weighted Average Number of Common Shares Outstanding:  
Basic 73,392,824 72,397,661 
Diluted75,439,066 72,397,661 
See notes to the Unaudited Condensed Consolidated Financial Statements.
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MDC PARTNERS INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(thousands of United States dollars)
 Three Months Ended March 31,
 20212020
Comprehensive Income 
Net income$9,501 $1,793 
Other comprehensive income (loss), net of applicable tax: 
Foreign currency translation adjustment(3,507)7,429 
Other comprehensive income (loss)(3,507)7,429 
Comprehensive income for the period5,994 9,222 
Comprehensive income attributable to the noncontrolling interests(3,539)(282)
Comprehensive income attributable to MDC Partners Inc.$2,455 $8,940 
See notes to the Unaudited Condensed Consolidated Financial Statements.
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MDC PARTNERS INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS
(thousands of United States dollars)
 March 31, 2021December 31, 2020
 
ASSETS  
Current Assets:  
Cash and cash equivalents$113,340 $60,757 
Accounts receivable, less allowance for doubtful accounts of $4,498 and $5,473377,670 374,892 
Expenditures billable to clients22,824 10,552 
Other current assets31,687 40,938 
Total Current Assets545,521 487,139 
Fixed assets, at cost, less accumulated depreciation of $137,729 and $136,16685,085 90,413 
Right-of-use assets - operating leases207,418 214,188 
Goodwill669,060 668,211 
Other intangible assets, net30,784 33,844 
Other assets22,845 17,517 
Total Assets$1,560,713 $1,511,312 
LIABILITIES, RNCI, AND SHAREHOLDERS’ DEFICIT
Current Liabilities
Accounts payable$209,679 $168,396 
Accruals and other liabilities242,667 274,968 
Advance billings170,159 152,956 
Current portion of lease liabilities - operating leases41,229 41,208 
Current portion of deferred acquisition consideration52,156 53,730 
Total Current Liabilities715,890 691,258 
Long-term debt864,850 843,184 
Long-term portion of deferred acquisition consideration41,244 29,335 
Long-term lease liabilities - operating leases241,375 247,243 
Other liabilities77,585 82,065 
Total Liabilities1,940,944 1,893,085 
Redeemable Noncontrolling Interests25,352 27,137 
Commitments, Contingencies and Guarantees (Note 9)
Shareholders' Deficit:
Convertible preference shares, 145,000 authorized, issued and outstanding at March 31, 2021 and December 31, 2020152,746 152,746 
Common stock and other paid-in capital106,193 104,367 
Accumulated deficit(704,741)(709,751)
Accumulated other comprehensive income183 2,739 
MDC Partners Inc. Shareholders' Deficit(445,619)(449,899)
Noncontrolling interests40,036 40,989 
Total Shareholders' Deficit(405,583)(408,910)
Total Liabilities, Redeemable Noncontrolling Interests and Shareholders' Deficit$1,560,713 $1,511,312 
See notes to the Unaudited Condensed Consolidated Financial Statements.
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MDC PARTNERS INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(thousands of United States dollars)

 Three Months Ended March 31,
20212020
Cash flows from operating activities:
Net income $9,501 $1,793 
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Stock-based compensation(1,963)3,070 
Depreciation and amortization8,176 9,206 
Impairment and other losses875 161 
Adjustment to deferred acquisition consideration11,685 (4,600)
Deferred income taxes63 8,511 
Foreign exchange and other682 4,489 
Changes in working capital:
Accounts receivable(2,779)41,148 
Expenditures billable to clients(12,272)7,370 
Prepaid expenses and other current assets(7,615)(3,385)
Accounts payable, accruals and other liabilities23,977 (62,120)
Acquisition related payments(473)(782)
Advance billings17,203 (24,816)
Net cash provided by (used in) operating activities47,060 (19,955)
Cash flows from investing activities:
Capital expenditures(13,423)(1,546)
Proceeds from sale of assets7,080 18,920 
Acquisitions, net of cash acquired (729)
Other(689) 
Net cash provided by (used in) investing activities(7,032)16,645 
Cash flows from financing activities:
Repayment of borrowing under revolving credit facility(140,950)(125,333)
Proceeds from revolving credit facility160,950 250,333 
Acquisition related payments(1,087)(750)
Distributions to noncontrolling interests and other(5,486)(4,608)
Net cash provided by financing activities13,427 119,642 
Effect of exchange rate changes on cash and cash equivalents(872)(2,164)
Net increase in cash and cash equivalents52,583 114,168 
Cash and cash equivalents at beginning of period60,757 106,933 
Cash and cash equivalents at end of period$113,340 $221,101 
Supplemental disclosures:
Cash income taxes paid$251 $849 
Cash interest paid$317 $145 
See notes to the Unaudited Condensed Consolidated Financial Statements.
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MDC PARTNERS INC. AND SUBSIDIARIES
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ DEFICIT
(thousands of United States dollars, except share amounts)




Three Months Ended
March 31, 2021
 Convertible Preference SharesCommon SharesCommon Stock and Other Paid-in CapitalAccumulated DeficitAccumulated Other Comprehensive IncomeMDC Partners Inc. Shareholders' DeficitNoncontrolling InterestsTotal Shareholders' Deficit
SharesAmountShares
Balance at December 31, 2020145,000 $152,746 73,532,848 $104,367 $(709,751)$2,739 $(449,899)$40,989 $(408,910)
Net income attributable to MDC Partners Inc.— — — — 5,010 — 5,010 — 5,010 
Other comprehensive loss— — — — — (2,555)(2,555)(952)(3,507)
Vesting of restricted awards— — 1,322,732 — — — — —  
Shares acquired and cancelled— — (64,520)(202)— — (202)— (202)
Stock-based compensation— — — 1,035 — — 1,035 — 1,035 
Changes in redemption value of redeemable noncontrolling interests— — — 1,681 — — 1,681 — 1,681 
Business acquisitions and step-up transactions, net of tax— — — (330)— — (330)— (330)
Other— — — (358) (1)(359)(1)(360)
Balance at March 31, 2021145,000 $152,746 74,791,060 $106,193 $(704,741)$183 $(445,619)$40,036 $(405,583)


Three Months Ended
March 31, 2020
 Convertible Preference SharesCommon SharesCommon Stock and Other Paid-in CapitalAccumulated DeficitAccumulated Other Comprehensive IncomeMDC Partners Inc. Shareholders' DeficitNoncontrolling InterestsTotal Shareholders' Deficit
 
SharesAmountShares
Balance at December 31, 2019145,000 $152,746 72,154,603 $101,469 $(480,779)$(4,269)$(230,833)$40,258 $(190,575)
Net income attributable to MDC Partners Inc.— — — — 1,002 — 1,002 — 1,002 
Other comprehensive income (loss)— — — — — 7,938 7,938 (509)7,429 
Vesting of restricted awards— — 587,227 — — — — —  
Shares acquired and cancelled— — (258,664)(637)— — (637)— (637)
Stock-based compensation— — — 476 — — 476 — 476 
Changes in redemption value of redeemable noncontrolling interests— — — (1,218)— — (1,218)— (1,218)
Business acquisitions and step-up transactions, net of tax— — — (503)— — (503)— (503)
Other— — —  82 — 82  82 
Balance at March 31, 2020145,000 $152,746 72,483,166 $99,587 $(479,695)$3,669 $(223,693)$39,749 $(183,944)











See notes to the Unaudited Condensed Consolidated Financial Statements
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MDC PARTNERS INC. AND SUBSIDIARIES
NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(thousands of United States dollars, except per share amounts, unless otherwise stated)
1. Basis of Presentation and Recent Developments
MDC Partners Inc. (the “Company” or “MDC”), incorporated under the laws of Canada, is a leading provider of global marketing, advertising, activation, communications and strategic consulting solutions. Through its Networks (and underlying agencies generally referred to as “Partner Firms”), MDC delivers a wide range of customized services in order to drive growth and business performance for its clients.
The accompanying consolidated financial statements include the accounts of MDC, its subsidiaries and variable interest entities for which the Company is the primary beneficiary. MDC has prepared the unaudited condensed consolidated interim financial statements included herein in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”) for reporting interim financial information on Form 10-Q. Accordingly, the financial statements have been condensed and do not include certain information and disclosures pursuant to these rules. The preparation of financial statements in conformity with GAAP requires us to make judgments, assumptions and estimates about current and future results of operations and cash flows that affect the amounts reported and disclosed. Actual results could differ from these estimates and assumptions. The consolidated results for interim periods are not necessarily indicative of results for the full year and should be read in conjunction with the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (“2020 10-K”).
The COVID-19 pandemic continues to negatively affect the global economy and the Company’s operations. The pandemic did not begin to impact the Company’s operations in a significant manner until the second quarter of 2020. Therefore, our first quarter of 2021 comparisons to the first quarter of 2020 are affected by the impact of the pandemic on our operations in the first quarter of 2021. Early in 2020, the Company took actions to combat the impact of COVID-19 on our operations. We will continue to monitor the worldwide public health threat, government actions to combat COVID-19 and the impact such developments may have on the overall economy, our clients and operations. If the impact of the pandemic is beyond our expectation, the Company believes it is well positioned through the actions implemented at the beginning of the pandemic to successfully work through the effects of COVID-19 in 2021. The impact of the pandemic and the corresponding actions are reflected in our judgments, assumptions and estimates in the preparation of the financial statements. The judgments, assumptions and estimates will be updated and could result in different results in the future depending on the continued impact of the COVID-19 pandemic.
The accompanying financial statements reflect all adjustments, consisting of normally recurring accruals, which in the opinion of management are necessary for a fair presentation, in all material respects, of the information contained therein. Intercompany balances and transactions have been eliminated in consolidation. Certain reclassifications have been made to the prior year financial information to conform to the current year presentation.
Recent Developments
On December 21, 2020, MDC and Stagwell Media LP (“Stagwell”) announced that they had entered into a definitive transaction agreement (the “Transaction Agreement”) providing for the combination of MDC with the subsidiaries of Stagwell that own and operate a portfolio of marketing services companies (the “Stagwell Entities”). The combination and related transactions, including the domestication of MDC to a Delaware corporation, are referred to as the “Transactions.” See “Item 1. Business – Recent Developments” in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, filed on March 16, 2021, for a description of the Transactions.
On May 7, 2021, MDC’s proxy statement/prospectus on Form S-4, as filed on April 30, 2021, which describes the Transaction Agreement, the Transactions, and related ancillary agreements in more detail, was declared effective by the SEC. MDC’s Board of Directors has scheduled a special meeting of shareholders on June 22, 2021 for the Company’s shareholders to vote on proposals to approve the Transactions and related matters.
On April 26, 2021, the Company acquired the remaining 40% ownership interest of Gale Partners it did not already own for an aggregate purchase price of approximately $20,000. The purchase price will be made in a combination of cash and MDC Class A Common Shares, of which approximately $12,000 is deferred with payments due in April 2022 and 2023. As part of the closing date purchase price, the Company issued 2,131,574 Class A Common Shares to the seller in a private placement in reliance on exemptions from registration under the Securities Act of 1933, as amended.

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2. Acquisitions and Dispositions
2020 Acquisition
On July 1, 2020, the Company acquired the remaining 10% ownership interest of Veritas it did not already own for an aggregate purchase price of $2,187, of which $1,087 was a deferred cash payment. As a result of the transaction, the Company reduced noncontrolling and redeemable noncontrolling interests by $2,651. The difference between the purchase price and the noncontrolling interest of $464 was recorded in Common stock and other paid-in capital in the Unaudited Condensed Consolidated Balance Sheets.
On March 19, 2020, the Company acquired the remaining 22.5% ownership interest of KWT Global it did not already own for an aggregate purchase price of $2,118, comprised of a closing cash payment of $729 and contingent deferred acquisition payments with an estimated present value at the acquisition date of $1,389. The contingent deferred payments were based on the financial results of the underlying business from 2019 to 2020 with final payment due in 2021. As a result of the transaction, the Company reduced redeemable noncontrolling interests by $1,615. The difference between the purchase price and the redeemable noncontrolling interest of $503 was recorded in Common stock and other paid-in capital in the Unaudited Condensed Consolidated Balance Sheets.
2020 Disposition
On February 14, 2020, the Company sold substantially all the assets and certain liabilities of Sloane and Company LLC (“Sloane”), an indirectly wholly owned subsidiary of the Company, to an affiliate of The Stagwell Group LLC (“Stagwell”), for an aggregate sale price of $26,696, consisting of cash received at closing plus contingent deferred payments expected to be paid over the next two years. The sale resulted in a gain of $16,827, which is included in Other, net within the Unaudited Condensed Consolidated Statements of Operations. Sloane was included within Allison & Partners which is included within the All Other category.

3. Revenue
The Company’s revenue recognition policies are established in accordance with ASC 606, and accordingly, revenue is recognized when control of the promised goods or services is transferred to our clients, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services.
The MDC network provides an extensive range of services to our clients, offering a variety of marketing and communication capabilities including strategy, creative and production for advertising campaigns across a variety of platforms (print, digital, social media, television broadcast), public relations services including strategy, editorial, crisis support or issues management, media training, influencer engagement and events management. We also provide media buying and planning across a range of platforms (out-of-home, paid search, social media, lead generation, programmatic, television broadcast), experiential marketing and application/website design and development.
The primary source of the Company’s revenue is from agency arrangements in the form of fees for services performed, commissions, and from performance incentives or bonuses, depending on the terms of the client contract. In all circumstances, revenue is only recognized when collection is reasonably assured. Certain of the Company’s contractual arrangements have more than one performance obligation. For such arrangements, revenue is allocated to each performance obligation based on its relative stand-alone selling price. Stand-alone selling prices are determined based on the prices charged to clients or using expected cost plus margin.
The determination of our performance obligations is specific to the services included within each contract. Based on a client’s requirements within the contract, and how these services are provided, multiple services could represent separate performance obligations or be combined and considered one performance obligation. Contracts that contain services that are not significantly integrated or interdependent, and that do not significantly modify or customize each other, are considered separate performance obligations. Typically, we consider media planning, media buying, creative (or strategy), production and experiential marketing services to be separate performance obligations if included in the same contract as each of these services can be provided on a stand-alone basis, and do not significantly modify or customize each other. Public relations services and application/website design and development are typically each considered one performance obligation as there is a significant integration of these services into a combined output.
We typically satisfy our performance obligations over time, as services are performed. Fees for services are typically recognized using input methods (direct labor hours, materials and third-party costs) that correspond with efforts incurred to date in relation to total estimated efforts to complete the contract. Point in time recognition primarily relates to certain commission-based contracts, which are recognized upon the placement of advertisements in various media when the Company has no further performance obligation.                                            
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Revenue is recognized net of sales and other taxes due to be collected and remitted to governmental authorities. The Company’s contracts typically provide for termination by either party within 30 to 90 days. Although payment terms vary by client, they are typically within 30 to 60 days. In addition, the Company generally has the right to payment for all services provided through the end of the contract or termination date.
Within each contract, we identify whether the Company is principal or agent at the performance obligation level. In arrangements where the Company has substantive control over the service before transferring it to the client, and is primarily responsible for integrating the services into the final deliverables, we act as principal. In these arrangements, revenue is recorded at the gross amount billed. Accordingly, for these contracts the Company has included reimbursed expenses in revenue. In other arrangements where a third-party supplier, rather than the Company, is primarily responsible for the integration of services into the final deliverables, and thus the Company is solely arranging for the third-party supplier to provide these services to our client, we generally act as agent and record revenue equal to the net amount retained, when the fee or commission is earned. The role of MDC’s agencies under a production services agreement is to facilitate a client’s purchasing of production capabilities from a third-party production company in accordance with the client’s strategy and guidelines. The obligation of MDC’s agencies under media buying services is to negotiate and purchase advertising media from a third-party media vendor on behalf of a client to execute its media plan. We do not obtain control prior to transferring these services to our clients; therefore, we primarily act as agent for production and media buying services.                                    
A small portion of the Company’s contractual arrangements with clients include performance incentive provisions, which allow the Company to earn additional revenues as a result of its performance relative to both quantitative and qualitative goals. Incentive compensation is primarily estimated using the most likely amount method and is included in revenue up to the amount that is not expected to result in a reversal of a significant amount of cumulative revenue recognized. We recognize revenue related to performance incentives as we satisfy the performance obligation to which the performance incentives are related.
Disaggregated Revenue Data
The Company provides a broad range of services to a large base of clients across the full spectrum of industry verticals globally. The primary source of revenue is from agency arrangements in the form of fees for services performed, commissions, and from performance incentives or bonuses. Certain clients may engage with the Company in various geographic locations, across multiple disciplines, and through multiple Partner Firms. Representation of a client rarely means that MDC handles marketing communications for all brands or product lines of the client in every geographical location. The Company’s Partner Firms often cooperate with one another through referrals and the sharing of both services and expertise, which enables MDC to service clients’ varied marketing needs by crafting custom integrated solutions. Additionally, the Company maintains separate, independent operating companies to enable it to effectively manage potential conflicts of interest by representing competing clients across the MDC network.
The following table presents revenue disaggregated by client industry vertical for the three months ended March 31, 2021 and 2020:
Three Months Ended March 31,
IndustryReportable Segment20212020
Food & BeverageAll$55,178 $58,091 
RetailAll30,777 36,303 
Consumer ProductsAll45,405 39,769 
CommunicationsAll16,990 41,045 
AutomotiveAll15,629 25,192 
TechnologyAll46,390 25,535 
HealthcareAll31,494 24,066 
FinancialsAll24,442 24,005 
Transportation and Travel/LodgingAll9,948 20,486 
OtherAll31,332 33,250 
$307,585 $327,742 

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MDC has historically largely focused where the Company was founded in North America, the largest market for its services in the world. The Company has expanded its global footprint to support clients looking for help to grow their businesses in new markets. MDC’s Partner Firms are located in the United States, Canada, and an additional eleven countries around the world. In the past, some clients have responded to weakening economic conditions with reductions to their marketing budgets, which included discretionary components that are easier to reduce in the short term than other operating expenses.
The following table presents revenue disaggregated by geography for the three months ended March 31, 2021 and 2020:
Three Months Ended March 31,
Geographical LocationReportable Segment20212020
United StatesAll$242,580$264,561
CanadaAll22,65018,256
OtherAll42,35544,925
$307,585$327,742

Contract Assets and Liabilities
Contract assets consist of fees and reimbursable outside vendor costs incurred on behalf of clients when providing advertising, marketing and corporate communications services that have not yet been invoiced to clients. Unbilled service fees were $59,143 and $49,110 at March 31, 2021 and December 31, 2020, respectively, and are included as a component of Accounts receivable on the Unaudited Condensed Consolidated Balance Sheets. Outside vendor costs incurred on behalf of clients which have yet to be invoiced were $22,824 and $10,552 at March 31, 2021 and December 31, 2020, respectively, and are included on the Unaudited Condensed Consolidated Balance Sheets as Expenditures billable to clients. Such amounts are invoiced to clients at various times over the course of providing services.
Contract liabilities consist of fees billed to clients in excess of fees recognized as revenue and are classified as Advance billings and included within Accruals and other liabilities on the Company’s Unaudited Condensed Consolidated Balance Sheets. In arrangements in which we are acting as an agent, the revenue recognition related to the contract liability is presented on a net basis within the Unaudited Condensed Consolidated Statements of Operations. Advance billings at March 31, 2021 and December 31, 2020 were $170,159 and $152,956, respectively. The increase in the Advance billings balance of $17,203 for the three months ended March 31, 2021 was primarily driven by cash payments received or due in advance of satisfying our performance obligations, offset by $99,188 of revenues recognized that were included in the Advance billings balances as of December 31, 2020 and reductions due to the incurrence of third-party costs. Contract liabilities classified within Accruals and other liabilities at March 31, 2021 and December 31, 2020 were $97,075 and $112,755, respectively. The decrease in the balance of $15,680 for the three months ended March 31, 2021 was primarily driven by cash payments received or due in advance of satisfying our performance obligations, offset by $69,699 of revenues recognized that were included in the balance as of December 31, 2020 and reductions due to the incurrence of third-party costs.
Changes in the contract asset and liability balances during the three months ended March 31, 2021 were not materially impacted by write offs, impairment losses or any other factors.
The majority of our contracts are for periods of one year or less. For those contracts with a term of more than one year, we had approximately $5,799 of unsatisfied performance obligations as of March 31, 2021, of which we expect to recognize approximately 83% in 2021 and 17% in 2022.
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4. Income (Loss) Per Common Share
The following table sets forth the computation of basic and diluted income (loss) per common share:
 Three Months Ended March 31,
 20212020
Numerator: 
Net income attributable to MDC Partners Inc.$5,010 $1,002 
Accretion on convertible preference shares(3,724)(3,440)
Net income allocated to convertible preference shares(365) 
Net income (loss) attributable to MDC Partners Inc. common shareholders$921 $(2,438)
Adjustment to net income allocated to convertible preference shares 7— 
Net income (loss) attributable to MDC Partners Inc. common shareholders - Diluted$928 $(2,438)
Denominator:
Basic weighted average number of common shares outstanding73,392,824 72,397,661 
Diluted weighted average number of common shares outstanding75,439,066 72,397,661 
Basic$0.01 $(0.03)
Diluted$0.01 $(0.03)
Anti-dilutive stock awards 1,920,634     2,835,770

Restricted stock and restricted stock unit awards of 0 and 2,203,717 as of March 31, 2021 and 2020, respectively, are excluded from the computation of diluted income (loss) per common share because the performance contingency necessary for vesting has not been met as of the reporting date. In addition, there were 145,000 Preference Shares outstanding which were convertible into 29,430,693 and 27,189,411 Class A common shares at March 31, 2021 and 2020, respectively. These Preference Shares were anti-dilutive for each period presented in the table above and are therefore excluded from the diluted income (loss) per common share calculation.
5. Deferred Acquisition Consideration
Deferred acquisition consideration on the balance sheet consists of deferred obligations related to contingent and fixed purchase price payments, and to a lesser extent, contingent and fixed retention payments tied to continued employment of specific personnel. Contingent deferred acquisition consideration is recorded at the acquisition date fair value and adjusted at each reporting period through operating income, for contingent purchase price payments, or net interest expense, for fixed purchase price payments. The Company accounts for certain retention payments through operating income as stock-based compensation over the required retention period.
The following table presents changes in contingent deferred acquisition consideration, which is measured at fair value on a recurring basis using significant unobservable inputs, and a reconciliation to the amounts reported on the balance sheets as of March 31, 2021 and December 31, 2020.
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March 31,December 31,
20212020
Beginning Balance of Contingent Payments$82,802 $74,671 
Payments(1,153)(46,792)
Redemption value adjustments (1)
12,392 44,993 
Additions - Acquisitions and step-up transactions  7,703 
Other(641)2,227 
Ending balance of contingent payments$93,400 $82,802 
Fixed Payments 263 
$93,400 $83,065 
(1) Redemption value adjustments are fair value changes from the Company’s initial estimates of deferred acquisition payments and stock-based compensation charges relating to acquisition payments that are tied to continued employment. Redemption value adjustments are recorded within Office and general expenses on the Unaudited Condensed Consolidated Statements of Operations.
The following table presents the impact to the Company’s Statements of operations due to the redemption value adjustments for the contingent deferred acquisition consideration:
Three Months Ended March 31,
20212020
Loss (income) attributable to fair value adjustments$11,685 $(4,600)
Stock-based compensation707 2,025 
Redemption value adjustments$12,392 $(2,575)
6. Leases
The Company leases office space in North America, Europe, Asia, South America, and Australia. This space is primarily used for office and administrative purposes by the Company’s employees in performing professional services. These leases are classified as operating leases and expire between years 2021 through 2033. The Company’s finance leases are immaterial.
The Company’s leasing policies are established in accordance with ASC 842, and accordingly, the Company recognizes on the balance sheet at the time of lease commencement a right-of-use lease asset and a lease liability, initially measured at the present value of the lease payments. Right-of-use lease assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. All right-of-use lease assets are reviewed for impairment. As the Company’s implicit rate in its leases is not readily determinable, in determining the present value of lease payments, the Company uses its incremental borrowing rate based on the information available at the commencement date. Lease payments included in the measurement of the lease liability are comprised of noncancelable lease payments, payments based upon an index or rate, payments for optional renewal periods where it is reasonably certain the renewal period will be exercised, and payments for early termination options unless it is reasonably certain the lease will not be terminated early.
Lease costs are recognized in the Unaudited Condensed Consolidated Statements of Operations over the lease term on a straight-line basis. Leasehold improvements are depreciated on a straight-line basis over the lesser of the term of the related lease or the estimated useful life of the asset. 
Some of the Company’s leases contain variable lease payments, including payments based upon an index or rate. Variable lease payments based upon an index or rate are initially measured using the index or rate in effect at the lease commencement date and are included within the lease liabilities. Lease liabilities are not remeasured as a result of changes in the index or rate, rather changes in these types of payments are recognized in the period in which the obligation for those payments is incurred. In addition, some of our leases contain variable payments for utilities, insurance, real estate tax, repairs and maintenance, and other variable operating expenses. Such amounts are not included in the measurement of the lease liability and are recognized in the period when the facts and circumstances which the variable lease payments are based upon occur.
Some of the Company’s leases include options to extend or renew the leases through 2040. The renewal and extension options are not included in the lease term as the Company is not reasonably certain that it will exercise its option.
From time to time, the Company enters into sublease arrangements both with unrelated third-parties and with our partner agencies. These leases are classified as operating leases and expire between years 2021 through 2027. Sublease income is
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recognized over the lease term on a straight-line basis. Currently, the Company subleases office space in North America, Asia, Europe and Australia.
As of March 31, 2021, the Company has entered into five operating leases for which the commencement date has not yet occurred as the premises are in the process of being prepared for occupancy by the landlord. Accordingly, these five leases represent an obligation of the Company that is not reflected within the Unaudited Condensed Consolidated Balance Sheets as of March 31, 2021. The aggregate future liability related to these leases is approximately $34,020.
The discount rate used for leases accounted for under ASC 842 is the Company’s collateralized credit adjusted borrowing rate.
The following table presents lease costs and other quantitative information for the three months ended March 31, 2021 and 2020:
 Three Months Ended March 31,
 20212020
Lease Cost:
Operating lease cost$17,127 $16,391 
Variable lease cost2,593 4,655 
Sublease rental income(2,564)(2,805)
Total lease cost$17,156 $18,241 
Additional information:
Cash paid for amounts included in the measurement of lease liabilities for operating leases
Operating cash flows$16,796 $17,635 
Right-of-use lease assets obtained in exchange for operating lease liabilities and other non-cash adjustments$3,816 $7,119 
Weighted average remaining lease term (in years) - Operating leases7.27.0
Weighted average discount rate - Operating leases10.6 8.7

In the three months ended March 31, 2021, the Company recorded a charge of $875 to reduce the carrying value of two of its right-of-use lease assets and accelerate the operating expenses of one of its right-of-use lease assets. These right-of-use lease assets related to three agencies within its Integrated Networks - Group B reportable segment. The Company evaluated the facts and circumstances related to the use of the assets which indicated that they may not be recoverable. Using adjusted quoted market prices to develop expected future cash flows, it was determined that the fair value of the assets were less than their carrying value. This impairment charge is included in Impairment and other losses within the Unaudited Condensed Consolidated Statements of Operations.
In the three months ended March 31, 2020, the Company recorded an impairment charge of $161 to reduce the carrying value of one of its right-of-use lease assets.
Operating lease expense is included in office and general expenses in the Unaudited Condensed Consolidated Statements of Operations. The Company’s lease expense for leases with a term of 12 months or less is immaterial.
The following table presents minimum future rental payments under the Company’s leases at March 31, 2021 and their reconciliation to the corresponding lease liabilities:
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 Maturity Analysis
Remaining 2021$52,871
202261,447 
202356,839 
202450,615 
202539,582 
2026 and thereafter152,702 
Total414,056 
Less: Present value discount(131,452)
Lease liability$282,604 
7. Debt
As of March 31, 2021 and December 31, 2020, the Company’s indebtedness was comprised as follows:
March 31, 2021December 31, 2020
Revolving Credit Agreements$20,000 $ 
Senior Notes
870,256 870,256 
Debt Issuance Cost(25,406)(27,072)
 $864,850 $843,184 
Senior Notes
On March 23, 2016, MDC entered into an indenture (the “Indenture”) among MDC, its existing and future restricted subsidiaries that guarantee, are co-borrowers under, or grant liens to secure, the Credit Agreement (as defined below), as guarantors (the “Guarantors”) and The Bank of New York Mellon, as trustee, relating to the issuance by MDC of $900,000 aggregate principal amount of the senior notes due 2024 (the “Senior Notes”). The Senior Notes were sold in a private placement in reliance on exemptions from registration under the Securities Act of 1933. The Senior Notes bear interest, payable semiannually in arrears on May 1 and November 1, at a rate of 7.50% per annum. The Senior Notes mature on May 1, 2024, unless earlier redeemed or repurchased.
The Senior Notes are guaranteed on a senior unsecured basis by all of MDC’s existing and future restricted subsidiaries that guarantee, are co-borrowers under, or grant liens to secure, the Credit Agreement. The Senior Notes are unsecured and unsubordinated obligations of MDC and rank (i) equally in right of payment with all of MDC’s or any Guarantor’s existing and future senior indebtedness, (ii) senior in right of payment to MDC’s or any Guarantor’s existing and future subordinated indebtedness, (iii) effectively subordinated to all of MDC’s or any Guarantor’s existing and future secured indebtedness to the extent of the collateral securing such indebtedness, including the Credit Agreement, and (iv) structurally subordinated to all existing and future liabilities of MDC’s subsidiaries that are not Guarantors.
MDC may, at its option, redeem the Senior Notes in whole at any time or in part from time to time, at varying prices based on the timing of the redemption.
If MDC experiences certain kinds of changes of control (as defined in the Indenture), holders of the Senior Notes may require MDC to repurchase any Senior Notes held by them at a price equal to 101% of the principal amount of the Senior Notes plus accrued and unpaid interest. In addition, if MDC sells assets under certain circumstances, it must apply the proceeds from such sale and offer to repurchase the Senior Notes at a price equal to 100% of the principal amount plus accrued and unpaid interest.
The Indenture includes covenants that, among other things, restrict MDC’s ability and the ability of its restricted subsidiaries (as defined in the Indenture) to incur or guarantee additional indebtedness; pay dividends on or redeem or repurchase the capital stock of MDC; make certain types of investments; create restrictions on the payment of dividends or other amounts from MDC’s restricted subsidiaries; sell assets; enter into transactions with affiliates; create liens; enter into sale and leaseback transactions; and consolidate or merge with or into, or sell substantially all of MDC’s assets to, another person. These covenants are subject to a number of important limitations and exceptions. The Senior Notes are also subject to customary events of default, including a cross-payment default and cross-acceleration provision. The Company was in compliance with all covenants at March 31, 2021.
Revolving Credit Agreement
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The Company is party to a $211,500 secured revolving credit facility due February 3, 2022. The Company had $20,000 outstanding under the revolving credit facility as of March 31, 2021.
Advances under the Credit Agreement bear interest as follows: (i) Non-Prime Rate Loans bear interest at the Non-Prime Rate plus the Non-Prime Rate Margin and (ii) all other Obligations bear interest at the Prime Rate, plus the Prime Rate Margin. The Non-Prime Rate Margin and Prime Rate Margin will range from 2.50% to 3.00% for Non-Prime Rate Loans and from 1.75% to 2.25% for Prime Rate Loans. In addition to paying interest on outstanding principal under the Credit Agreement, MDC is required to pay an unused revolver fee to lenders under the Credit Agreement in respect of unused commitments thereunder.
The Credit Agreement, which includes financial and non-financial covenants, is guaranteed by substantially all of MDC’s present and future subsidiaries, other than immaterial subsidiaries and subject to customary exceptions, and collateralized by a portion of MDC’s outstanding receivable balance. The Company was in compliance with all of the terms and conditions of its Credit Agreement as of March 31, 2021.
At March 31, 2021 and December 31, 2020, the Company had issued undrawn outstanding letters of credit of $19,151 and $18,651, respectively.
8. Noncontrolling and Redeemable Noncontrolling Interests
When acquiring less than 100% ownership of an entity, the Company may enter into agreements that give the Company an option to purchase, or require the Company to purchase, the incremental ownership interests under certain circumstances. Where the option to purchase the incremental ownership is within the Company’s control, the amounts are recorded as noncontrolling interests in the equity section of the Company’s Unaudited Condensed Consolidated Balance Sheets. Where the incremental purchase may be required of the Company, the amounts are recorded as redeemable noncontrolling interests in mezzanine equity at their estimated acquisition date redemption value and adjusted at each reporting period for changes to their estimated redemption value through additional paid-in capital (but not less than their initial redemption value), except for foreign currency translation adjustments. On occasion, the Company may initiate a renegotiation to acquire an incremental ownership interest and the amount of consideration paid may differ materially from the amounts recorded in the Company’s Unaudited Condensed Consolidated Balance Sheets.
Noncontrolling Interests
Changes in amounts due to noncontrolling interest holders included in Accruals and other liabilities on the Unaudited Condensed Consolidated Balance Sheets for the year ended December 31, 2020 and three months ended March 31, 2021 were as follows:
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 Noncontrolling
Interests
Balance at December 31, 2019$14,028 
Income attributable to noncontrolling interests21,774 
Distributions made(15,192)
Other94 
Balance at December 31, 2020$20,704 
Income attributable to noncontrolling interests4,491 
Distributions made(5,285)
Other36 
Balance at March 31, 2021$19,946 
Changes in the Company’s ownership interests in our less than 100% owned subsidiaries during the three months ended March 31, 2021 and 2020 were as follows:
 Three Months Ended March 31,
 20212020
Net income attributable to MDC Partners Inc.$5,010 $1,002 
Transfers from the noncontrolling interest:
Decrease in MDC Partners Inc. paid-in capital for purchase of redeemable noncontrolling interests and noncontrolling interests(330)(503)
Net transfers from noncontrolling interests$(330)$(503)
Change from Net income attributable to MDC Partners Inc. and transfers to noncontrolling interests$4,680 $499 

Redeemable Noncontrolling Interests
The following table presents changes in redeemable noncontrolling interests:
Three Months Ended March 31, 2021Year Ended December 31, 2020
Beginning Balance$27,137 $36,973 
Redemptions (12,289)
Granted  
Changes in redemption value(1,681)2,800 
Currency translation adjustments(104)(347)
Ending Balance$25,352 $27,137 
The noncontrolling shareholders’ ability to exercise any such option right is subject to the satisfaction of certain conditions, including conditions requiring notice in advance of exercise and specific employment termination conditions. In addition, these rights cannot be exercised prior to specified staggered exercise dates. The exercise of these rights at their earliest contractual date would result in obligations of the Company to fund the related amounts during 2021 to 2025. It is not determinable, at this time, if or when the owners of these rights will exercise all or a portion of these rights.
The redeemable noncontrolling interest of $25,352 as of March 31, 2021, consists of $16,469 assuming that the subsidiaries perform over the relevant future periods at their discounted cash flows earnings level and such rights are exercised, $8,883 upon termination of such owner’s employment with the applicable subsidiary or death and $0 representing the initial redemption value (required floor) recorded for certain acquisitions in excess of the amount the Company would have to pay should the Company acquire the remaining ownership interests for such subsidiaries.
These adjustments will not impact the calculation of earnings (loss) per share if the redemption values are less than the estimated fair values. There is no related impact on the Company’s income per share calculations.
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9. Commitments, Contingencies, and Guarantees
Legal Proceedings. The Company’s operating entities are involved in legal proceedings of various types. While any litigation contains an element of uncertainty, the Company has no reason to believe that the outcome of such proceedings or claims will have a material adverse effect on the financial condition or results of operations of the Company.
Deferred Acquisition Consideration and Options to Purchase. See Notes 5 and 8 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for information regarding potential payments associated with deferred acquisition consideration and the acquisition of noncontrolling shareholders’ ownership interest in subsidiaries.
Natural Disasters. Certain of the Company’s operations are located in regions of the United States which typically are subject to hurricanes. During the three months ended March 31, 2021 and 2020, these operations did not incur any material costs related to damages resulting from hurricanes.
Guarantees. Generally, the Company has indemnified the purchasers of certain assets in the event that a third party asserts a claim against the purchaser that relates to a liability retained by the Company. These types of indemnification guarantees typically extend for a number of years. Historically, the Company has not made any significant indemnification payments under such agreements and no amount has been accrued in the accompanying consolidated financial statements with respect to these indemnification guarantees. The Company continues to monitor the conditions that are subject to guarantees and indemnifications to identify whether it is probable that a loss has occurred and would recognize any such losses under any guarantees or indemnifications in the period when those losses are probable and estimable.
Commitments.  At March 31, 2021, the Company had $19,151 of undrawn letters of credit.
The Company entered into operating leases for which the commencement date has not yet occurred as of March 31, 2021. See Note 6 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for additional information.
10. Share Capital
The authorized and outstanding share capital of the Company is as follows:
Series 6 Convertible Preference Shares
On March 14, 2019 (the “Series 6 Issue Date”), the Company entered into a securities purchase agreement with Stagwell Agency Holdings LLC (“Stagwell Holdings”), an affiliate of Stagwell, pursuant to which Stagwell Holdings agreed to purchase (i) 14,285,714 newly authorized Class A shares (the “Stagwell Class A Shares”) for an aggregate contractual purchase price of $50,000 and (ii) 50,000 newly authorized Series 6 convertible preference shares (“Series 6 Preference Shares”) for an aggregate contractual purchase price of $50,000. The Company received proceeds of approximately $98,620 net of fees and estimated expenses, which were primarily used to pay down existing debt under the Company’s credit facility and for general corporate purposes. The proceeds allocated to the Stagwell Class A Shares were $35,997 and to Series 6 Preference Shares were $62,623 based on their relative fair value calculated by utilizing a Monte Carlo Simulation model. In connection with the closing of the transaction, the Company increased the size of its Board and appointed two nominees designated by Stagwell Holdings. Except as required by law, the Series 6 Preference Shares do not have voting rights and are not redeemable at the option of Stagwell Holdings.
The holders of the Series 6 Preference Shares have the right to convert their Series 6 Preference Shares in whole at any time and from time to time, and in part at any time and from time to time, into a number of Class A Shares equal to the then-applicable liquidation preference divided by the applicable conversion price at such time (the “Conversion Price”). The initial liquidation preference per share of each Series 6 Preference Share is $1,000. The initial Conversion Price is $5.00 per Series 6 Preference Share, subject to customary adjustments for share splits and combinations, dividends, recapitalizations and other matters, including weighted average anti-dilution protection for certain issuances of equity or equity-linked securities.
The Series 6 Preference Shares’ liquidation preference accretes at 8.0% per annum, compounded quarterly until the five-year anniversary of the Series 6 Issue Date. During the three months ended March 31, 2021, the Series 6 Preference Shares accreted at a monthly rate of 7.69, for total accretion of $1,153, bringing the aggregate liquidation preference to $58,804 as of March 31, 2021. The accretion is considered in the calculation of net income (loss) attributable to MDC Partners Inc. common shareholders. See Note 4 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for further information regarding the Series 6 Preference Shares.
Holders of the Series 6 Preference Shares are entitled to dividends in an amount equal to any dividends that would otherwise have been payable on the Class A Shares issued upon conversion of the Series 6 Preference Shares. The Series 6 Preference Shares are convertible at the Company’s option (i) on and after the two-year anniversary of the Series 6 Issue Date, if the closing trading price of the Class A Shares over a specified period prior to conversion is at least 125% of the Conversion
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Price or (ii) after the fifth anniversary of the Issue Date, if the closing trading price of the Class A Shares over a specified period prior to conversion is at least equal to the Conversion Price.
Following certain change in control transactions of the Company in which holders of Series 6 Preference Shares are not entitled to receive cash or qualifying listed securities with a value at least equal to the liquidation preference plus accrued and unpaid dividends, (i) holders will be entitled to cash dividends on the liquidation preference at an increasing rate (beginning at 7%), and (ii) the Company will have a right to redeem the Series 6 Preference Shares for cash at the greater of their liquidation preference plus accrued and unpaid dividends or their as-converted value.
Series 4 Convertible Preference Shares
On March 7, 2017 (the “Series 4 Issue Date”), the Company issued 95,000 newly created Preference Shares (“Series 4 Preference Shares”) to affiliates of The Goldman Sachs Group, Inc. (collectively, the “Purchaser”) pursuant to a $95,000 private placement. The Company received proceeds of approximately $90,123, net of fees and estimated expenses, which were primarily used to pay down existing debt under the Company’s credit facility and for general corporate purposes. In connection with the closing of the transaction, the Company increased the size of its Board and appointed one nominee designated by the Purchaser. Except as required by law, the Series 4 Preference Shares do not have voting rights and are not redeemable at the option of the Purchaser.
Subsequent to the ninetieth day following the Series 4 Issue Date, the holders of the Series 4 Preference Shares have the right to convert their Series 4 Preference Shares in whole at any time and from time to time and in part at any time and from time to time into a number of Class A Shares equal to the then-applicable liquidation preference divided by the applicable conversion price at such time (the “Conversion Price”). The initial liquidation preference per share of each Series 4 Preference Share is $1,000. The Conversion Price of a Series 4 Preference Share is subject to customary adjustments for share splits and combinations, dividends, recapitalizations and other matters, including weighted average anti-dilution protection for certain issuances of equity or equity-linked securities. In connection with the anti-dilution protection provision triggered by the issuance of equity securities to Stagwell Holdings, the Conversion Price per Series 4 Preference Share was reduced to $7.42 from the initial Conversion Price of $10.00.
The Series 4 Preference Shares’ liquidation preference accretes at 8.0% per annum, compounded quarterly until the five-year anniversary of the Series 4 Issue Date. During the three months ended March 31, 2021, the Series 4 Preference Shares accreted at a monthly rate of approximately $9.02 per Series 4 Preference Share, for total accretion of $2,571, bringing the aggregate liquidation preference to $131,110 as of March 31, 2021. The accretion is considered in the calculation of net income (loss) attributable to MDC Partners Inc. common shareholders. See Note 4 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for further information regarding the Series 4 Preference Shares.
Holders of the Series 4 Preference Shares are entitled to dividends in an amount equal to any dividends that would otherwise have been payable on the Class A Shares issued upon conversion of the Series 4 Preference Shares. The Series 4 Preference Shares are convertible at the Company’s option (i) on and after the two-year anniversary of the Issue Date, if the closing trading price of the Class A Shares over a specified period prior to conversion is at least 125% of the Conversion Price or (ii) after the fifth anniversary of the Series 4 Issue Date, if the closing trading price of the Class A Shares over a specified period prior to conversion is at least equal to the Conversion Price.
Following certain change in control transactions of the Company in which holders of Series 4 Preference Shares are not entitled to receive cash or qualifying listed securities with a value at least equal to the liquidation preference plus accrued and unpaid dividends, (i) holders will be entitled to cash dividends on the liquidation preference at an increasing rate (beginning at 7%), and (ii) the Company will have a right to redeem the Series 4 Preference Shares for cash at the greater of their liquidation preference plus accrued and unpaid dividends or their as-converted value.
Class A Common Shares (“Class A Shares”)
These are an unlimited number of subordinate voting shares, carrying one vote each, with a par value of $0, entitled to dividends equal to or greater than Class B Shares, convertible at the option of the holder into one Class B Share for each Class A Share after the occurrence of certain events related to an offer to purchase all Class B shares. There were 74,787,317 and 73,529,105 Class A Shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively.
Class B Common Shares (“Class B Shares”)
These are an unlimited number of voting shares, carrying twenty votes each, with a par value of $0, convertible at any time at the option of the holder into one Class A share for each Class B share. There were 3,743 and 3,743 Class B Shares issued and outstanding as of March 31, 2021 and December 31, 2020, respectively.


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11. Fair Value Measurements
A fair value measurement assumes a transaction to sell an asset or transfer a liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability.
In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs and minimize the use of unobservable inputs to the extent possible as well as considers counterparty credit risk in its assessment of fair value. The hierarchy for observable and unobservable inputs used to measure fair value into three broad levels are described below: 
Level 1 - Quoted prices (unadjusted) in active markets that are accessible at the measurement date for assets or liabilities. The fair value hierarchy gives the highest priority to Level 1 inputs.
Level 2 - Observable prices that are based on inputs not quoted on active markets, but corroborated by market data.
Level 3 - Unobservable inputs are used when little or no market data is available. The fair value hierarchy gives the lowest priority to Level 3 inputs.
Financial Liabilities that are not Measured at Fair Value on a Recurring Basis
The following table presents certain information for our financial liability that is not measured at fair value on a recurring basis at March 31, 2021 and December 31, 2020:
 March 31, 2021December 31, 2020
 Carrying
Amount
Fair ValueCarrying
Amount
Fair Value
Liabilities:    
Senior Notes$870,256 $882,379 $870,256 $883,580 
Our long-term debt includes fixed rate debt. The fair value of this instrument is based on quoted market prices in markets that are not active. Therefore, this debt is classified as Level 2 within the fair value hierarchy.
Financial Liabilities Measured at Fair Value on a Recurring Basis
Contingent deferred acquisition consideration (Level 3 fair value measurement) is recorded at the acquisition date fair value and adjusted at each reporting period. The estimated liability is determined in accordance with various contractual valuation formulas and is dependent upon significant assumptions, such as the growth rate of the earnings of the relevant subsidiary during the contractual period and the discount rate. These growth rates are consistent with the Company’s long-term forecasts. As of March 31, 2021, the discount rate used to measure these liabilities was 5.1%.
As these estimates require the use of assumptions about future performance, which are uncertain at the time of estimation, the fair value measurements presented on the Unaudited Condensed Consolidated Balance Sheets are subject to material uncertainty.
See Note 5 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for additional information regarding contingent deferred acquisition consideration.
At March 31, 2021 and December 31, 2020, the carrying amount of the Company’s financial instruments, including cash and cash equivalents, accounts receivable and accounts payable, approximated fair value because of their short-term maturity.
Non-financial Assets and Liabilities that are Measured at Fair Value on a Nonrecurring Basis
Certain non-financial assets are measured at fair value on a nonrecurring basis, primarily goodwill, intangible assets (Level 3 fair value measurement) and right-of-use lease assets (Level 2 fair value measurement). Accordingly, these assets are not measured and adjusted to fair value on an ongoing basis but are subject to periodic evaluations for potential impairment. The Company did not recognize an impairment of goodwill or intangible assets in the three months ended March 31, 2021. The company did not recognize an impairment of goodwill or intangible assets in the three months ended March 31, 2020.
The Company recognized a charge of $598 to reduce the carrying value of its right-of-use lease assets in the three months ended March 31, 2021. The company recognized an impairment charge of $161 to reduce the carrying value of one of its right-of-use lease assets in the three months ended March 31, 2020. See Note 6 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for further information.


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12. Supplemental Information
Impairment and Other Losses
The Company recognized a charge of $875 for the three months ended March 31, 2021 to reduce the carrying value of two of its right-of-use lease assets and accelerate the operating expenses of one of its right-of-use lease assets. These right-of-use lease assets related to three agencies within its Integrated Networks - Group B reportable segment.
See Note 6 of the Notes to the Unaudited Condensed Consolidated Financial Statements included herein for additional information regarding the impairment of right-of-use lease assets and losses.
Income Taxes
Our tax provision for interim periods is determined using an estimated annual effective tax rate, adjusted for discrete items arising in interim periods.
On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) was signed into law. The CARES Act includes provisions relating to delaying certain payroll tax payments, refundable payroll tax credits, net operating loss carryback periods, modifications to the net interest deduction limitations and technical corrections to the tax depreciation methods for qualified improvement property. The tax law changes in the CARES Act did not have a material impact on the Company’s income tax provision.
The Company had an income tax expense for the three months ended March 31, 2021 of $1,302 (on a pre-tax income of $11,296 resulting in an effective tax rate of 11.5%) compared to income tax expense of $13,500 (on pre-tax income of $15,293 resulting in an effective tax rate of 88.3%) for the three months ended March 31, 2020.
         The effective tax rate of 11.5% for the three months ended March 31, 2021 was primarily due to minimal tax expense recognized on U.S. earnings as a result of being subject to a valuation allowance.
The effective tax rate of 88.3% for the three months ended March 31, 2020 was primarily driven by capital gains, non-deductible stock compensation for which a tax benefit was not recognized, and the jurisdictional mix of earnings.    

13. Related Party Transactions
In the ordinary course of business, the Company enters into transactions with related parties, including Stagwell and its affiliates. The transactions may range in the nature and value of services underlying the arrangements. Below are the related party transactions that are significant in nature:
In October 2019, a Partner Firm of the Company entered into an arrangement with a Stagwell affiliate, in which the Stagwell affiliate and the Partner Firm collaborated to provide various services to a client of the Partner Firm. The Partner Firm and the Stagwell affiliate pitched and won this business together, with the client ultimately determining the general scope of work for each agency. Under the arrangement, which was structured as a sub-contract due to client preference, the Partner Firm is expected to pay the Stagwell affiliate, for services provided by the Stagwell affiliate in connection with serving the client, approximately $2,000 which has been fully recognized through March 31, 2021. As of March 31, 2021, $101 was owed to the affiliate.
In January 2021, a Partner Firm of the Company entered into an arrangement with a certain Stagwell affiliate to perform media planning, buying and reporting services. Under the arrangement, the Partner Firm is expected to receive from the Stagwell affiliate approximately $529, which have been fully recognized through March 2021. As of March 31, 2021, $0 was due from the affiliate. 

In May 2020, a Partner Firm of the Company entered into an arrangement with a certain Stagwell affiliate to perform programmatic media planning, buying and reporting services. Under the arrangement, the Partner Firm is expected to receive from the Stagwell affiliate approximately $2,397, which is expected to be fully recognized in May 2021. As of March 31, 2021, $0 was due from the affiliate. 

In November 2020, a Partner Firm of the Company entered into an arrangement with a certain Stagwell affiliate to perform Event Management Services. Under the arrangement, the Partner Firm is expected to receive from the Stagwell affiliate approximately $456, which has been fully recognized as of March of 2021. As of March 31, 2021, $316 was due from the affiliate.

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In February 2021, a Partner Firm of the Company entered into an arrangement with a certain Stagwell affiliate to perform requirements gathering and concept features for a future-leaning ad platform for the augmented reality space. Under the arrangement, the Stagwell affiliate is expected to receive from the Partner Firm approximately $140, which will be recognized through April 2021. As of March 31, 2021, $140 was due to the affiliate.

In March 2021, a Partner Firm of the Company entered into an arrangement with a certain Stagwell affiliate to perform media relations support and outreach services. Under the arrangement, the Partner Firm is expected to receive from the Stagwell affiliate approximately $190, which will be recognized through September 2022. As of March 31, 2021, $10 was due from the affiliate.

The Company entered into an agreement commencing on January 1, 2020 to sublease office space through July 2021 to a company whose chairman is a member of the Company’s Board of Directors. As of March 31, 2021, the total future rental income related to the sublease is approximately $65.
14. Segment Information
The Company determines an operating segment if a component (i) engages in business activities from which it earns revenues and incurs expenses, (ii) has discrete financial information, and is (iii) regularly reviewed by the Chief Operating Decision Maker (“CODM”), who is Mark Penn, Chief Executive Officer and Chairman, to make decisions regarding resource allocation for the segment and assess its performance. Once operating segments are identified, the Company performs an analysis to determine if aggregation of operating segments is applicable. This determination is based upon a quantitative analysis of the expected and historic average long-term profitability for each operating segment, together with a qualitative assessment to determine if operating segments have similar operating characteristics.
The CODM uses Adjusted EBITDA (defined below) as a key metric, to evaluate the operating and financial performance of a segment, identify trends affecting the segments, develop projections and make strategic business decisions. Adjusted EBITDA is defined as Net income (loss) attributable to MDC Partners Inc. common shareholders’ plus or minus non-operating items to operating income (loss), plus depreciation and amortization, stock-based compensation, deferred acquisition consideration adjustments, distributions from non-consolidated affiliates and other items, net. Distributions from non-consolidated affiliates includes (i) cash received for profit distributions from non-consolidated affiliates, and (ii) consideration from the sale of ownership interests in non-consolidated affiliates, less contributions to date, plus undistributed earnings (losses). Other items, net includes items such as merger related costs, severance and other restructuring expenses, including costs for leases that will either be terminated or sublet in connection with the centralization of our New York real estate portfolio.
The three reportable segments that result from applying the aggregation criteria are as follows: “Integrated Networks - Group A,” “Integrated Networks - Group B” and the “Media & Data Network.” In addition, the Company combines and discloses operating segments that do not meet the aggregation criteria as “All Other.” The Company also reports corporate expenses, as further detailed below, as “Corporate.” All segments follow the same basis of presentation and accounting policies as those described throughout the Notes to the Unaudited Condensed Consolidated Financial Statements included herein and Note 2 of the Company’s 2020 Form 10-K.
The Integrated Networks - Group A reportable segment is comprised of the Anomaly Alliance (Anomaly, Concentric Partners, Hunter, Mono, Y Media Labs) and Colle McVoy operating segments.
The Integrated Networks - Group B reportable segment is comprised of the Constellation (72andSunny, CPB, Instrument and Redscout) and Doner Partner Network (6degrees, Doner, KWT, Union, Veritas and Yamamoto) operating segments.
    The operating segments aggregated within the Integrated Networks - Group A and B reportable segments provide a range of services for their clients, primarily including strategy, creative and production for advertising campaigns across a variety of platforms (print, digital, social media, television broadcast) as well as public relations and communications services, experiential, social media and influencer marketing. These operating segments share similar characteristics related to (i) the nature of their services; (ii) the type of clients and the methods used to provide services; and (iii) the extent to which they may be impacted by global economic and geopolitical risks. In addition, these operating segments compete with each other for new business and from time to time have business move between them. While the operating segments are similar in nature, the distinction between the Integrated Networks - Group A and B is the aggregation of operating segments that have the most similar historical and expected average long-term profitability.
The Media & Data Network reportable segment is comprised of a single operating segment that combines media buying and planning across a range of platforms (out-of-home, paid search, social media, lead generation,
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programmatic, television broadcast) with technology and data capabilities. The Media & Data Network includes Gale Partners, Kenna, MDC Media and Northstar.
All Other consists of the Company’s remaining operating segments that provide a range of services including advertising, public relations and marketing communication services, but generally do not have similar services offerings or financial characteristics as those aggregated in the reportable segments. The All Other category includes Allison & Partners, Bruce Mau, Forsman & Bodenfors, Hello, Team and Vitro.
Corporate consists of corporate office expenses incurred in connection with the strategic resources provided to the operating segments, as well as certain other centrally managed expenses that are not fully allocated to the operating segments. These office and general expenses include (i) salaries and related expenses for corporate office employees, including employees dedicated to supporting the operating segments, (ii) occupancy expenses relating to properties occupied by all corporate office employees, (iii) other office and general expenses including professional fees for the financial statement audits and other public company costs, and (iv) certain other professional fees managed by the corporate office. Additional expenses managed by the corporate office that are directly related to the operating segments are allocated to the appropriate reportable segment and the All Other category.
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Three Months Ended March 31,
20212020
Revenue:(Dollars in Thousands)
Integrated Networks - Group A$102,386 $90,621 
Integrated Networks - Group B111,151 117,707 
Media & Data Network36,783 41,058 
All Other57,265 78,356 
Total$307,585 $327,742 
Adjusted EBITDA:
Integrated Networks - Group A$22,462 $16,301 
Integrated Networks - Group B25,869 17,136 
Media & Data Network5,081 1,787 
All Other6,042 9,904 
Corporate(7,520)(5,562)
Total Adjusted EBITDA$51,934 $39,566 
Depreciation and amortization$(8,176)$(9,206)
Impairment and other losses(875)(161)