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 June 30, 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 Stagwell Inc. (Exact name of registrant as specified in its charter) Delaw ...

(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 Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q 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) ...

MDC Partners Inc. (MDCA) Q1 2021 Results Conference Call May 5, 2021 8:30 AM ET Company Participants Michaela Pewarski - VP, IR Mark Penn - Chairman and CEO Frank Lanuto - CFO David Ross - General Counsel Irwin Simon - Lead Independent Director of Board and Chair of the Special Committee of Independent Members of the Board Conference Call Participants Tom White - D.A. Davidson Operator Good day, and welcome to the MDC Partners First Quarter Results Conference call. [Operator Instructions] Please note this e ...

CCOOPartners Management Presentation First Quarter 2021 Results May 5, 2021 FORWARD LOOKING STATEMENTS & OTHER INFORMATION 2 This presentation contains forward-looking statements. Statements in this presentation that are not historical facts, including without limitation the information under the heading "Financial Outlook" and statements about the Company's beliefs and expectations, earnings (loss) guidance, recent business and economic trends, potential acquisitions, and estimates of amounts for redeemabl ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2020 ☐ 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) (State or Other Jurisdiction of Incor ...

8 MDC Partners STAGWELL t TRANSFORMING MARKETING FORWARD LOOKING INFORMATION & OTHER INFORMATION Cautionary Statement Regarding Forward-Looking Statements This communication may contain certain forward-looking statements (collectively, "forward-looking statements") within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended and Section 21E of the U.S. Exchange Act and the United States Private Securities Litigation Reform Act of 1995, as amended, and "forward-looking information" under ...

MDC Partners, Inc. (MDCA) Q4 2020 Earnings Conference Call March 2, 2021 8:30 AM ET Company Participants Alexandra Ewing - Chief Communication Officer Mark Penn - Chairman and Chief Executive Officer Frank Lanuto - Chief Financial Officer Conference Call Participants Avi Steiner - JPMorgan Operator Good day, and welcome to the MDC Partners Fourth Quarter and Year-End Results Conference Call. All participants will be in a listen-only mode. After today’s presentation there will be an opportunity to ask questi ...

MDC Partners, Inc. (MDCA) Q3 2020 Earnings Conference Call October 29, 2020 8:30 AM ET Company Participants Alexandra Ewing - Chief Communications Officer Mark Penn - Chairman & CEO Frank Lanuto - CFO Conference Call Participants Matthew Swope - Robert W. Baird & Co. Operator Good day, ladies and gentlemen. Welcome to your MDC Partners Third Quarter Results Conference Call. [Operator Instructions]. At this time, it is my pleasure to turn the floor over to your host, Alexandra Delanghe. Ma'am, the floor is y ...

MDC Partners Inc. (MDCA) Q2 2020 Results Conference Call August 6, 2020 8:30 AM ET Company Participants David Kirby - IR Mark Penn - Chairman and CEO Frank Lanuto - CFO Conference Call Participants Brian Hirschfeld - Bain Capital Operator Ladies and gentlemen, good day and thank you all for joining this MDC Partners Second Quarter 2020 Results Conference Call. All lines are in a listen-only mode. But after today's prepared remarks, instructions on how to share a question will be given to our questions. To g ...

ICCO Partners Management Presentation Second Quarter 2020 Results August 6, 2020 FORWARD LOOKING STATEMENTS & OTHER INFORMATION 2 This presentation contains forward-looking statements. Statements in this presentation that are not historical facts, including without limitation the information under the heading "Financial Outlook" and statements about the Company's beliefs and expectations, earnings (loss) guidance, recent business and economic trends, potential acquisitions, and estimates of amounts for rede ...