Mark D. Gerstein - Oct 1, 2025 Form 4 Insider Report for OMNICOM GROUP INC. (OMC)

Role
Director
Signature
/s/ Eric J. Cleary, Attorney in Fact for Mark D. Gerstein
Stock symbol
OMC
Transactions as of
Oct 1, 2025
Transactions value $
$0
Form type
4
Date filed
10/3/2025, 04:34 PM
Previous filing
Jul 3, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gerstein Mark D Director C/O OMNICOM GROUP INC., 280 PARK AVENUE, NEW YORK /s/ Eric J. Cleary, Attorney in Fact for Mark D. Gerstein 2025-10-03 0001916341

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OMC Common Stock, par value $0.15 per share Award $0 +629 +5.18% $0.00 12.8K Oct 1, 2025 Direct F1, F3
transaction OMC Common Stock, par value $0.15 per share Award $0 +276 +2.16% $0.00 13K Oct 1, 2025 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reporting person elected to defer receipt of these shares under the terms of the Omnicom Group Inc. 2021 Incentive Award Plan.
F2 The reporting person elected to defer receipt of these shares, which represent a quarterly payment of his annual retainer, under the terms of the Omnicom Group Inc. 2021 Incentive Award Plan.
F3 Includes dividends on deferred shares that are reinvested in company stock, credited on July 9, 2025.