[Form 4] OMNICOM GROUP INC. Insider Trading Activity

Rhea-AI Filing Summary

Patricia Salas Pineda, a director of Omnicom Group Inc. (OMC), reported on Form 4 that she elected to defer receipt of 628.6 shares under the Omnicom Group Inc. 2021 Incentive Award Plan with a transaction dated 10/01/2025. The report shows 9,060.31 shares beneficially owned after the transaction, which includes dividends on deferred shares that were reinvested and credited on 07/09/2025. The filing was signed on behalf of Ms. Salas Pineda by an attorney-in-fact on 10/03/2025. No derivative securities or cash purchases were reported; the deferral is recorded as a non-cash acquisition at a $0 price.

Positive

• 628.6 shares were deferred into the 2021 Incentive Award Plan, indicating participation in long-term compensation
• Beneficial ownership increased to 9,060.31 shares after dividend reinvestment credited on 07/09/2025
• Transaction was a non-cash plan deferral (price reported as $0) and involved no disposals

Negative

• None.

Insights

Insider Transactions Analyst

Director deferred 628.6 shares into the company plan; total beneficial ownership is 9,060.31.

The Form 4 records a non-cash acquisition on 10/01/2025 where the reporting person elected to defer receipt of shares under the 2021 Incentive Award Plan. The transaction is coded as an election to defer and shows a price of $0, indicating this was not a market purchase but a plan deferral.

The filing also discloses that dividends on deferred shares were reinvested and credited on 07/09/2025, which increases the reported beneficial ownership to 9,060.31 shares.

Corporate Governance Specialist

Deferral indicates alignment with long-term compensation structure.

The election to defer shares under the company plan is an administrative choice within the disclosed compensation framework rather than an open-market purchase or sale. It shows participation in the 2021 Incentive Award Plan and reinvestment of dividends credited on 07/09/2025.

This Form 4 does not report any disposals, option exercises, or derivative holdings by the reporting person.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Pineda Patricia Salas

(Last) (First) (Middle)

C/O OMNICOM GROUP INC.

280 PARK AVENUE

(Street)

NEW YORK NY 10017

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
OMNICOM GROUP INC. [ OMC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.15 per share	10/01/2025		A		628.6(1)	A	$0	9,060.31(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The reporting person elected to defer receipt of these shares under the terms of the Omnicom Group Inc. 2021 Incentive Award Plan.

2. Includes dividends on deferred shares that are reinvested in company stock, credited on July 9, 2025.

	/s/ Eric J. Cleary, Attorney in Fact for Patricia Salas Pineda	10/03/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Omnicom director Patricia Salas Pineda report on Form 4 (OMC)?

She reported electing to defer 628.6 shares under the Omnicom 2021 Incentive Award Plan with a transaction date of 10/01/2025.

How many Omnicom (OMC) shares does the reporting person beneficially own after the transaction?

The Form 4 shows beneficial ownership of 9,060.31 shares following the reported transaction.

Were any derivative securities reported by the insider for OMC?

No. Table II for derivative securities contains no reported transactions; only non-derivative shares were deferred.

Did the filing disclose any dividend reinvestment related to the deferred shares?

Yes. The filing states dividends on deferred shares were reinvested and credited on 07/09/2025 and are included in the 9,060.31 shares.

What price was reported for the deferred shares in the Form 4 for OMC?

The deferred shares are recorded with a transaction price of $0, reflecting a non-cash deferral election.