[Form 4] INTERPUBLIC GROUP OF COMPANIES, INC. Insider Trading Activity

Rhea-AI Filing Summary

Interpublic Group of Companies, Inc. (IPG) reported a Form 4 transaction for director Mary Guilfoile on 11/26/2025 related to the company’s merger with Omnicom Group Inc. The filing shows the disposition of 125,390 shares of IPG common stock, leaving the reporting person with zero shares beneficially owned.

Under the merger agreement, each share of IPG common stock with $0.10 par value was converted into the right to receive 0.344 shares of Omnicom common stock with $0.15 par value, plus cash in lieu of fractional shares. In addition, each outstanding restricted stock award held by the director became fully vested immediately before the merger’s effective time and was cancelled in exchange for the same merger consideration.

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
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X

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^*

GUILFOILE MARY

(Last) (First) (Middle)

IPG

909 THIRD AVENUE

(Street)

NEW YORK NY 10022

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
INTERPUBLIC GROUP OF COMPANIES, INC. [ IPG ]

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)
11/26/2025

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	11/26/2025		D(1)		125,390	D	(2)(3)	0	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. Disposition pursuant to the merger (the "Merger") of EXT Subsidiary Inc. ("Merger Sub") with and into the Issuer, with the Issuer surviving as a wholly owned subsidiary of Omnicom Group Inc. ("Omnicom"), pursuant to the Agreement and Plan of Merger, dated as of December 8, 2024, by and among the Issuer, Omnicom and Merger Sub (the "Merger Agreement").

2. Pursuant to the Merger Agreement, at the effective time of the Merger (the "Effective Time"), each share of common stock, par value $0.10, of the Issuer (the "Issuer Common Stock"), was converted into the right to receive 0.344 shares (the "Exchange Ratio") of common stock, par value $0.15, of Omnicom (the "Omnicom Common Stock"), plus cash in lieu of fractional shares (the "Common Stock Merger Consideration").

3. Pursuant to the Merger Agreement, each outstanding restrictive stock award ("RSA") that was granted to the Reporting Person, whether vested or unvested, became fully vested immediately prior to the Effective Time and was cancelled and converted into the right to receive the Common Stock Merger Consideration.

	/s/ Robert Dobson POA for Mary Guilfoile	11/26/2025
	** 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 insider transaction was reported in IPG Form 4 on 11/26/2025?

The Form 4 reports that director Mary Guilfoile disposed of 125,390 shares of Interpublic Group of Companies, Inc. common stock in connection with the completion of a merger with Omnicom Group Inc.

How many IPG shares did the reporting person hold after the merger-related transaction?

Following the reported transaction, the filing shows the reporting person beneficially owned 0 shares of IPG common stock.

What merger affected the IPG director’s shareholdings?

The disposition arose from a merger in which EXT Subsidiary Inc. merged with and into Interpublic Group of Companies, Inc., with IPG surviving as a wholly owned subsidiary of Omnicom Group Inc. under a merger agreement dated December 8, 2024.

What was the exchange ratio for IPG common stock in the Omnicom merger?

Each share of IPG common stock, par value $0.10, was converted into the right to receive 0.344 shares of Omnicom common stock, par value $0.15, plus cash in lieu of fractional shares.

How were IPG restricted stock awards treated in the merger?

Each outstanding restricted stock award held by the reporting person became fully vested immediately prior to the effective time of the merger and was cancelled and converted into the right to receive the same common stock merger consideration.

What is the reporting person’s relationship to Interpublic Group of Companies, Inc.?

The Form 4 identifies the reporting person as a director of Interpublic Group of Companies, Inc.