[Form 4] OMNICOM GROUP INC. Insider Trading Activity

Rhea-AI Filing Summary

Deborah J. Kissire, a director of Omnicom Group Inc. (OMC), reported a transaction dated 10/01/2025 in which she elected to defer receipt of 628.6 shares under the Omnicom Group Inc. 2021 Incentive Award Plan. The filing shows the deferred shares carried a $0 price and increased her reported beneficial ownership to 24,945.38 shares. The filing also notes that dividends on the deferred shares were reinvested and credited on July 9, 2025. The Form 4 was signed on behalf of Ms. Kissire by an attorney-in-fact and submitted on 10/03/2025.

Positive

• Director deferral of 628.6 shares indicates continued alignment with shareholder interests
• Beneficial ownership increased to 24,945.38 shares, reflecting greater insider stake
• Dividends reinvested (credited July 9, 2025) contributed additional share accumulation without cash outlay

Negative

• None.

Insights

Corporate Governance Analyst

Director deferred 628.6 shares into the company plan, raising ownership to 24,945.38.

Deferred receipt under an equity plan is a non-cash method for directors to receive compensation and align long-term interests with shareholders. The filing explicitly states the shares were deferred under the 2021 Incentive Award Plan and carried a $0 acquisition price.

The filing also records dividend reinvestment credited on July 9, 2025, which modestly increases share accumulation without a cash outlay. The disclosure was executed by an attorney-in-fact and filed promptly after the transaction date.

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^*

Kissire Deborah J.

(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	24,945.38(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 Deborah J. Kissire	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 transaction did Deborah J. Kissire report on Form 4 for OMC?

She reported electing to defer 628.6 shares under the Omnicom 2021 Incentive Award Plan on 10/01/2025.

How many Omnicom shares does Deborah Kissire beneficially own after the transaction?

The Form 4 reports 24,945.38 shares beneficially owned following the reported transaction.

Was there a cash purchase price for the deferred shares?

The filing lists a $0 price for the deferred shares, indicating no cash payment at receipt.

Did dividends affect the reported share amount?

Yes. The filing states dividends on deferred shares were reinvested and credited on July 9, 2025.

When was the Form 4 filed and who signed it?

The document shows a signature by an attorney-in-fact and a filing date of 10/03/2025.