Omnicom (OMC) Co-President uses 3,969 shares to cover equity award taxes

Rhea-AI Filing Summary

OMNICOM GROUP INC. Co-President and Co-COO Daryl Simm reported a tax-withholding disposition of 3,969 shares of common stock at $70.83 per share. These shares were delivered to cover tax obligations, not sold in the open market, leaving him with 222,729 directly held shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Simm Daryl

Role Co-President and Co-COO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock, par value $0.15 per share	3,969	$70.83	$281K

Holdings After Transaction: Common Stock, par value $0.15 per share — 222,729 shares (Direct, null)

Footnotes (1)

Key Figures

Shares used for tax withholding: 3,969 shares Reference price per share: $70.83 per share Shares held after transaction: 222,729 shares

3 metrics

Shares used for tax withholding 3,969 shares Common Stock, transaction code F

Reference price per share $70.83 per share Tax-withholding disposition

Shares held after transaction 222,729 shares Direct ownership following Form 4 transaction

Key Terms

tax-withholding disposition, Common Stock, par value $0.15 per share, Payment of exercise price or tax liability by delivering securities

3 terms

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Common Stock, par value $0.15 per share financial

"security_title: "Common Stock, par value $0.15 per share""

Payment of exercise price or tax liability by delivering securities financial

"transaction_code_description: "Payment of exercise price or tax liability by delivering securities""

Form 4 Insider Transactions: What Each Field Means →

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Simm Daryl

(Last) (First) (Middle)

C/O OMNICOM GROUP INC.

280 PARK AVENUE

(Street)

NEW YORK NEW YORK 10017

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Co-President and Co-COO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

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

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

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

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	05/15/2026		F		3,969	D	$70.83	222,729	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:

	/s/ Eric J. Cleary, Attorney in Fact for Daryl Simm	05/19/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What did Omnicom (OMC) executive Daryl Simm report on this Form 4?

Daryl Simm reported a tax-withholding disposition of 3,969 Omnicom shares. The shares were delivered to satisfy tax obligations related to equity compensation, rather than sold on the open market, and his direct holdings remain substantial afterward.

How many Omnicom (OMC) shares were involved in Daryl Simm’s tax withholding?

The Form 4 shows 3,969 common shares used for tax withholding at a reference price of $70.83 per share. This disposition reduced the reported position only slightly while addressing the related tax liability from an equity award.

How many Omnicom (OMC) shares does Daryl Simm hold after this Form 4 transaction?

After the tax-withholding disposition, Daryl Simm directly holds 222,729 Omnicom shares. This figure, disclosed in the Form 4, indicates the transaction changed his overall equity position only modestly, reflecting routine management of compensation-related taxes.

Was Daryl Simm’s Omnicom (OMC) Form 4 transaction an open-market sale?

No. The Form 4 describes the transaction as a tax-withholding disposition under code F. Shares were delivered to cover tax liabilities related to equity compensation, rather than being sold voluntarily in the open market for cash proceeds.

What does transaction code F mean in the Omnicom (OMC) Form 4?

Transaction code F indicates payment of an exercise price or tax liability by delivering securities. In this case, Omnicom executive Daryl Simm used 3,969 shares to satisfy tax obligations tied to his equity compensation, not to execute a discretionary sale.