Omnicom (NYSE: OMC) Co-COO uses stock to cover taxes

Rhea-AI Filing Summary

OMNICOM GROUP INC. (OMC) reported an insider transaction by Co-President and Co-COO Daryl Simm. On 2026-08-15, 3,172 shares of common stock were disposed of at $87.57 per share in a Code F transaction, representing shares delivered or withheld for payment of exercise price or tax liability. Following this transaction, Simm directly holds 250,868 shares of Omnicom common stock.

Insider Trade Summary

Net Seller: 3,172 shares

Net Sell 1 txn

Insider Simm Daryl

Role Co-President and Co-COO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock, par value $0.15 per share	3,172	$87.57	$278K

Holdings After Transaction: Common Stock, par value $0.15 per share — 250,868 shares (Direct)

Key Figures

Shares disposed (Code F): 3,172 shares Transaction value per share: $87.57 per share Shares owned after transaction: 250,868 shares +1 more

4 metrics

Shares disposed (Code F) 3,172 shares Common stock delivered or withheld on 2026-08-15 for exercise price or tax liability

Transaction value per share $87.57 per share Per-share value for the 3,172-share Code F disposition on 2026-08-15

Shares owned after transaction 250,868 shares Directly held Omnicom common shares by Daryl Simm following the reported transaction

Exercise price or tax liability shares 3,172 shares Shares used for payment of exercise price or tax liability (Code F)

Key Terms

Code F, exercise price or tax liability, Common Stock, par value $0.15 per share

3 terms

Code F financial

"in a Code F transaction, representing shares delivered or withheld"

exercise price or tax liability financial

"for payment of exercise price or tax liability by delivering or withholding"

Common Stock, par value $0.15 per share financial

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

FAQ

What insider transaction did OMC report for executive Daryl Simm?

OMC reported that Daryl Simm disposed of 3,172 shares of common stock on 2026-08-15 in a Code F transaction, meaning shares were delivered or withheld to cover exercise price or tax liability.

At what price were Daryl Simm’s OMC shares transacted?

The 3,172 OMC shares were valued at $87.57 per share. This price applies to the Code F disposition, reflecting the value used when shares were delivered or withheld for exercise price or tax obligations.

How many OMC shares does Daryl Simm own after this transaction?

After the reported transaction, Daryl Simm directly holds 250,868 shares of Omnicom Group Inc. common stock. This figure reflects his direct ownership position following the 3,172-share Code F disposition.

What does the Code F transaction mean in Daryl Simm’s OMC Form 4?

Code F indicates that 3,172 shares were delivered or withheld for payment of option exercise price or related tax liability, rather than an open-market purchase or sale. It is classified as a disposal of shares.

Was Daryl Simm’s OMC transaction under a Rule 10b5-1 trading plan?

The Form 4 indicates the Rule 10b5-1 checkbox is not affirmed for this filing. That means the transaction is not identified in the form as being executed under a pre-arranged 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/18/2026 - 04:31 PM Accepted by SEC EDGAR 08/18/2026 - 04:31 PM Learn about SEC filing dates

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)
08/15/2026

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	08/15/2026		F		3,172	D	$87.57	250,868	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	08/18/2026
	** 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)