Omnicom Group

Current directors and officers who also hold a role at another S&P 500 company.

• Valerie WilliamsDVN · DirectorDTE · Director
• Cassandra SantosDTE · Director
• Gracia C. MartoreURI · Director

Latest Schedule 13D/13G filing per holder. Holders that reported falling below 5% are not shown. Index funds usually report once a year.

No 5% holder filings parsed yet for this company.

Open-market purchases and sales reported on Form 4. Grants, option exercises and tax withholding are excluded.

Every 8-K with Item 5.02 (departure, election or appointment of directors and officers). The text is the first paragraph of the item.

1. Oct 6, 2026

   On October 1, 2026, after a distinguished career including more than 25 years at Omnicom Group Inc. (the “Company”), Andrew Castellaneta retired from his role as the Company’s Senior Vice President and Chief Accounting Officer, effective immediately. Mr. Castellaneta will remain an employee of the Company for a period of time to facilitate a smooth transition. Mr. Castellaneta’s retirement is not the result of any disagreement with the Company on any matter relating to the Company’s operations, policies or practices. On October 1, 2026, the Company’s Board of Directors appointed Jordan Farnam as Vice President, Global Financial Reporting and Chief Accounting Officer, effective immediately. Mr. Farnam, age 44, joined the Company in January 2024 as Vice President, Global Financial Reporting.

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2. Jan 29, 2026

   (e) On January 28, 2026, the shareholders of Omnicom Group Inc. (the “Company”) approved the Omnicom 2026 Incentive Award Plan (the “Plan”). A more detailed description of the Plan is available in the Company’s definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission on December 22, 2025 (the “Proxy Statement”) under the heading, “Proposal 1 – Approval of the Omnicom 2026 Incentive Award Plan,” which description is incorporated by reference herein. The foregoing summary and the description incorporated by reference from the Proxy Statement do not purport to be complete and are qualified in their entirety by reference to the full text of the Plan, a copy of which is included as Exhibit 10.1 hereto and incorporated herein by reference.

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3. Nov 26, 2025

   Director Appointments On the Closing Date, the Board of Directors (the “Board”) of Omnicom increased the size of the Board from 11 directors to 14 directors and elected Philippe Krakowsky, Patrick Q. Moore and E. Lee Wyatt Jr. (collectively, the “New Directors” and each, a “New Director”) as directors of Omnicom to fill the vacancies created by such increase, effective as of the Effective Time. Each of the New Directors will hold office as a director on the Board from the Closing Date until the Company’s next annual meeting of shareholders or until a successor is elected and qualified or until his earlier resignation or removal. None of the New Directors have a direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K.

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4. May 14, 2025

   On May 12, 2025, Omnicom Management Inc. (the “ Company ”), Omnicom Group Inc. (“ Omnicom ”), and John D. Wren entered into an amended and restated employment agreement (the “ Employment Agreement ”) pursuant to which Mr. Wren’s term as Chairman and Chief Executive Officer (“ CEO ”) of Omnicom will continue through December 31, 2028 (the “ Renewal Term ”). During the Renewal Term, Mr. Wren is expected to continue to focus on ensuring the future, long-term success of Omnicom and advancing key strategic initiatives, including completion of the pending acquisition of The Interpublic Group of Companies, Inc. (“ IPG ”), the successful integration of IPG following completion, and the continued transformation of Omnicom’s business in this new era of marketing. Mr.

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5. Dec 18, 2023

   On December 12, 2023, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) increased the size of the Board from ten persons to eleven persons and elected Cassandra Santos as a director to fill the vacancy created by such increase, effective January 1, 2024. Ms. Santos will hold office as a director on the Board from January 1, 2024 until the Company’s next annual meeting of shareholders or until a successor is elected and qualified or until her earlier resignation or removal. Ms. Santos was also appointed to serve, effective January 1, 2024, on the Finance Committee of the Board. Ms. Santos does not have a direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K. There is no arrangement or understanding between Ms.

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6. Jan 6, 2023

   Michael J. O’Brien has notified Omnicom Group Inc. (the “Company”) that he has finalized his plans to step down from his role as the Company’s Executive Vice President, General Counsel and Secretary to spend more time with his family and pursue personal interests. Effective December 31, 2022, Mr. O’Brien is transitioning to an advisory role with the Company. Louis F. Januzzi, who has been a member of Omnicom’s legal team for 15 years, is being promoted to Senior Vice President, General Counsel and Secretary. 1

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7. Feb 22, 2022

   On February 15, 2022, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) voted to increase the size of the Board from nine persons to eleven persons and to elect Patricia Salas Pineda and Mark D. Gerstein as new directors to fill the vacancies created by such increase, effective immediately for Ms. Pineda and effective on May 1, 2022 for Mr. Gerstein. Each of them will hold office as a director on the Board until the Company’s next annual meeting of shareholders and until a successor is elected and qualified or until their earlier resignation or removal. Ms. Pineda was appointed to serve on the Governance Committee of the Board and Mr. Gerstein was appointed to serve, effective May 1, 2022, on the Finance Committee of the Board. Neither Ms. Pineda nor Mr.

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8. Nov 1, 2021

   On October 29, 2021, the Board of Directors of Omnicom Group Inc. (the “Company”) appointed Daryl Simm as President and Chief Operating Officer of the Company, effective November 1, 2021. Mr. Simm, age 60, previously served as Chief Executive Officer of Omnicom Media Group (OMG) for more than two decades, having joined the Company in 1998. Before joining Omnicom, Mr. Simm started his career at Procter & Gamble, where he was General Manager of P&G Productions and VP of Worldwide Media.

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9. Jul 23, 2021

   On July 21, 2021, Omnicom Management Inc. (the “Company”) entered into an employment agreement (“Employment Agreement”) with John D. Wren pursuant to which he will continue as Chairman and Chief Executive Officer of Omnicom Group Inc. (“OGI”). The initial term of the Employment Agreement is through December 31, 2024, provided that the term shall automatically renew for successive one-year terms unless either party timely notifies the other of their intent not to renew the Employment Agreement. Except for a termination at the end of the then current term of the Employment Agreement by notice of non-renewal, the Employment Agreement may only be earlier terminated by the Company for cause (within the meaning of the Omnicom Group Inc. Senior Executive Restrictive Covenant and Retention Plan), due to death, or pursuant to Mr. Wren’s resignation for any reason.

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10. May 7, 2021

    (e)           On May 4, 2021, the shareholders of Omnicom Group Inc. (the “Company”) approved the Omnicom Group Inc. 2021 Incentive Award Plan (the “Plan”). A more detailed description of the Plan is available in the Company’s definitive proxy statement on Schedule 14A filed with the Securities and Exchange Commission on March 25, 2021 (the “Proxy Statement”) under the heading, “Item 4—Approval of the Omnicom Group Inc. 2021 Incentive Award Plan,” which description is incorporated by reference herein. The foregoing summary and the description incorporated by reference from the Proxy Statement do not purport to be complete and are qualified in their entirety by reference to the full text of the Plan, a copy of which is included as Exhibit 10.1 hereto and incorporated herein by reference.

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11. Oct 18, 2018

    On October 12, 2018, Omnicom Group Inc. (the “Company”) announced that Dennis E. Hewitt, Treasurer of the Company, notified the Company of his intent to retire, effective December 31, 2018. A copy of the press release is attached as Exhibit 99.1 hereto and is incorporated by reference herein. Also, on October 12, 2018, Mr. Hewitt entered into a Separation Agreement with Omnicom Capital Inc., a wholly-owned subsidiary of the Company. A copy of the Separation Agreement is attached as Exhibit 10.1 hereto and is incorporated by reference herein.

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12. Feb 22, 2018

    (d) On February 15, 2018, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) voted to increase the size of the Board from thirteen persons to fourteen persons and to elect Ronnie S. Hawkins as a new director to fill the vacancy created by such increase, effective immediately. Mr. Hawkins will hold office as a director on the Board until the Company’s next annual meeting of shareholders and until his successor is elected and qualified or until his earlier resignation or removal. Mr. Hawkins has been appointed to serve on the Finance Committee of the Board. Mr. Hawkins has no direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K. There is no arrangement or understanding between Mr. Hawkins and any other person pursuant to which he was selected as a director. Mr.

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13. Jul 18, 2017

    (d) On July 13, 2017, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) elected Gracia C. Martore as a member of the Board, effective immediately. Ms. Martore will hold office as a director on the Board until the Company’s next annual meeting of shareholders and until her successor is elected and qualified or until her earlier resignation or removal. Ms. Martore has been appointed to serve on the Audit Committee of the Board. Ms. Martore has no direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K. There is no arrangement or understanding between Ms. Martore and any other person pursuant to which she was selected as a director. Ms.

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14. Oct 24, 2016

    (d) On October 18, 2016, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) voted to increase the size of the Board from twelve persons to thirteen persons and to elect Valerie Williams as a new director to fill the vacancy created by such increase, effective immediately. Ms. Williams will hold office as a director on the Board until the Company’s next annual meeting of shareholders and until her successor is elected and qualified or until her earlier resignation or removal. Ms. Williams has not yet been appointed to serve on any committees of the Board. Ms. Williams has no direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K. There is no arrangement or understanding between Ms. Williams and any other person pursuant to which she was selected as a director. Ms.

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15. Feb 8, 2016

    (d) On February 2, 2016, the Board of Directors (the “Board”) of Omnicom Group Inc. (the “Company”) voted to increase the size of the Board from thirteen persons to fourteen persons and to elect Deborah Kissire as a new director to fill the vacancy created by such increase, effective March 1, 2016. Ms. Kissire will serve on the Audit Committee of the Board. Ms. Kissire will hold office as a director on the Board until the Company’s next annual meeting of shareholders and until her successor is elected and qualified or until her earlier resignation or removal. Ms. Kissire has no direct or indirect interest in any transaction with the Company that would qualify as a related party transaction under Item 404(a) of Regulation S-K. There is no arrangement or understanding between Ms. Kissire and any other person pursuant to which she was selected as a director. Ms.

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Proxy statements (DEF 14A): 2026 · 2025 · 2025 · 2024 · 2023 · 2022

From the company's 10-K XBRL data (SEC companyfacts).

People who stopped filing as an insider of this company. “Last filing” is the last Form 3/4/5, an upper bound on when they left.