# EDGAR Filing Document

**Accession Number:** 0000029989
**File Stem:** 0001213900-26-008858
**Filing Date:** 2026-1
**Character Count:** 32764
**Document Hash:** c4c247bc169d50a2cb207a0b904355da
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-008858.hdr.sgml**: 20260128

**ACCESSION NUMBER**: 0001213900-26-008858

**CONFORMED SUBMISSION TYPE**: S-8

**PUBLIC DOCUMENT COUNT**: 16

**FILED AS OF DATE**: 20260128

**DATE AS OF CHANGE**: 20260128

**EFFECTIVENESS DATE**: 20260128

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OMNICOM GROUP INC.
- **CENTRAL INDEX KEY:** 0000029989
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-ADVERTISING AGENCIES [7311]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 131514814
- **STATE OF INCORPORATION:** NY
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-8
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-293016
- **FILM NUMBER:** 26572934

**BUSINESS ADDRESS:**
- **STREET 1:** 280 PARK AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 2124153600

**MAIL ADDRESS:**
- **STREET 1:** 280 PARK AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** OMNICOM GROUP INC
- **DATE OF NAME CHANGE:** 19920703

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DOYLE DANE BERNBACH GROUP INC
- **DATE OF NAME CHANGE:** 19861117

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DOYLE DANE BERNBACH INTERNATIONAL INC
- **DATE OF NAME CHANGE:** 19850604

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM S-8** 

**REGISTRATION STATEMENT** 

***under***

***the Securities Act of 1933***

**Omnicom Group Inc.** 

**(Exact name of registrant as specified in its charter)** 

---

| | |
|:---|:---|
| **New York** | **13-1514814** |
| **(State or other jurisdiction of<br> incorporation or organization)** | **(I.R.S. Employer<br> Identification No.)** |

---

**280 Park Avenue** 

**New York, NY 10017** 

**(212) 415-3600** 

**(Address of Principal Executive Offices)** 

**(Zip Code)** 

**Omnicom 2026 Incentive Award Plan** 

**(Full title of the Plan)** 

---

| | |
|:---|:---|
| ***Copy to:*** | ***Copy to:*** |
| **Louis F. Januzzi, Esq.** | **Joel H. Trotter, Esq.** |
| **Senior Vice President, General Counsel and Secretary** | **Latham & Watkins LLP** |
| **Omnicom Group Inc.** | **555 Eleventh Street, N.W.** |
| **280 Park Avenue** | **Washington, D.C. 20004** |
| **New York, NY 10017** | **(202) 637-2200** |
| **(212) 415-3600** |  |

---

**(Name, address and telephone number, including area code, of agent for service)**

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer ☒ Accelerated filer ☐ <br> Non-accelerated filer ☐ Smaller reporting company ☐ <br> Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. ☐

**Explanatory Note** 

This Registration Statement on Form S-8 (the "Registration Statement") is being filed in order to register 27,390,000 shares of common stock, $0.15 par value per share ("Common Stock"), of Omnicom Group Inc. (the "Company" or the "Registrant") that may be issued to participants pursuant to the Omnicom 2026 Incentive Award Plan (the "Plan").

On January 28, 2026, shareholders of the Company approved the Plan at the Company's Special Meeting of Shareholders.

**PART I** 

**INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS** 

The documents containing the information specified in this Part I will be sent or given to employees as specified by Rule 428(b)(1) under the Securities Act of 1933 (as amended, the "Securities Act"). Such documents need not be filed with the Securities and Exchange Commission (the "Commission") either as part of this Registration Statement or prospectuses or prospectus supplements pursuant to Rule 424 under the Securities Act. These documents and the documents incorporated by reference in the Registration Statement pursuant to Item 3 of Part II of this Registration Statement, taken together, constitute a prospectus that meets the requirements of Section 10(a) of the Securities Act.

**PART II** 

**INFORMATION REQUIRED IN THE REGISTRATION STATEMENT** 

**Item 3. Incorporation of Documents by Reference.** 

The following documents filed with the Commission by the Company are incorporated as of their respective dates in this Registration Statement by reference:

● The Company's Annual Report on [Form 10-K](https://www.sec.gov/Archives/edgar/data/29989/000002998925000009/omc-20241231.htm) for the year ended December 31, 2024, filed with the Commission on February 5, 2025;

● The information specifically incorporated by reference into the Company's Annual Report on Form 10-K from its Definitive Proxy Statement on [Schedule 14A](https://www.sec.gov/Archives/edgar/data/29989/000101376225003435/ea0227091-02.htm) , filed with the Commission on March 27, 2025;

● The Company's Quarterly Reports on Form 10-Q for the quarterly periods ended March 31, 2025, June 30, 2025 and September 30, 2025, filed with the Commission on [April 16, 2025](https://www.sec.gov/Archives/edgar/data/29989/000002998925000015/omc-20250331.htm) , [July 16, 2025](https://www.sec.gov/Archives/edgar/data/29989/000002998925000026/omc-20250630.htm) and [October 22, 2025](https://www.sec.gov/Archives/edgar/data/29989/000002998925000037/omc-20250930.htm) , respectively;

● The Company's Current Reports on Form 8-K, filed with the Commission on [March 7, 2025](https://www.sec.gov/Archives/edgar/data/29989/000119312525049986/d890642d8k.htm) , [March 14, 2025](https://www.sec.gov/Archives/edgar/data/29989/000119312525054145/d875447d8k.htm) , [March 19, 2025](https://www.sec.gov/Archives/edgar/data/29989/000119312525056787/d923398d8k.htm) , [May 9, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025041552/ea0241431-8k_omnicom.htm) , [May 14, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025043442/ea0242158-8k_omnicom.htm) , [June 23, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025056782/ea0246616-8k_omnicom.htm) , [August 11, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025073964/ea0252536-8k_omnicom.htm) , [August 25, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025080113/ea0254296-8k_omnicom.htm) , [September 9, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025086203/ea0256350-8k_omnicom.htm) , [September 30, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025094068/ea0259425-8k_omnicom.htm) , [October 30, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025104221/ea0263119-8k_omnicom.htm) , [November 26, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025115098/ea0267091-8k_omnicom.htm) , [November 26, 2025](https://www.sec.gov/Archives/edgar/data/29989/000119312525300788/d24786d8k.htm) (excluding Item 7.01 and Exhibit 99.1 attached thereto) and [December 2, 2025](https://www.sec.gov/Archives/edgar/data/29989/000121390025117362/ea0267366-8k_omnicom.htm) ; and

● The description of the Company's common stock contained in the Registration Statement on [Form S-3](https://www.sec.gov/Archives/edgar/data/29989/000121390024089287/ea0217608-01.htm) filed with the Commission on October 21, 2024 (File No. 333-282748), including any subsequently filed amendments and reports updating such description.

All documents filed by the Company pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), subsequent to the date of this Registration Statement and prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in this Registration Statement and are a part hereof from the date of filing such documents; except as to any information furnished to, rather than filed with, the Commission (including under Items 2.02 and 7.01 of Form 8-K). Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall be deemed to be modified or superseded for purposes of this Registration Statement to the extent that a statement contained herein or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute a part of this Registration Statement.

**Item 4. Description of Securities.** 

Not required to be filed with this Registration Statement.

**Item 5. Interests of Named Experts and Counsel.** 

Not applicable.

**Item 6. Indemnification of Directors and Officers.** 

The Company's restated certificate of incorporation contains a provision limiting the liability of directors (except for approving statutorily prohibited dividends, share repurchases or redemptions, distributions of assets on dissolution or loans to directors) to acts or omissions determined by a judgment or other final adjudication to have been in bad faith, involving intentional misconduct or a knowing violation of the law, or resulting in personal gain to which the director was not legally entitled. The Company's by-laws provide that an officer or director will be indemnified against any costs or liabilities, including attorney's fees and amounts paid in settlement with the Company's consent in connection with any claim, action or proceeding to the fullest extent permitted by the New York Business Corporation Law (the "NYBCL").

The Company has entered into indemnification agreements with each of its executive officers, directors and certain other employees. Under the indemnification agreements, the Company agrees to indemnify the indemnitee to the fullest extent permitted by applicable law if the indemnitee is made, or is threatened to be made, a party to any proceeding (including a proceeding by or in the right of the Company to procure a judgment in its favor) against all expenses, judgments, fines, penalties and amounts paid in settlement (including all interest, assessments and other charges paid or payable in connection with or in respect of such expenses, judgments, fines, penalties and amounts paid in settlement) actually and necessarily incurred by the indemnitee in connection with the proceeding. In addition, to the extent that the indemnitee is, by reason of his corporate status, a witness in any proceeding to which the indemnitee is not a party, the Company agrees to indemnify and hold harmless the indemnitee against all expenses actually and necessarily incurred by him or on his behalf in connection therewith. The Company also agrees that, to the extent the Company maintains liability insurance applicable to agents of the Company or of any other enterprise which such agent serves at the request of the Company, the indemnitee will be covered by such policies in accordance with its or their terms to the maximum extent of the coverage available for any such agent under such policy or policies.

Section 721 of the NYBCL provides that, in addition to indemnification provided in Article 7 of the NYBCL, a corporation may indemnify a director or officer by a provision contained in the certificate of incorporation or by-laws or by a duly authorized resolution of its shareowners or directors or by agreement, provided that no indemnification may be made to or on behalf of any director or officer if a judgment or other final adjudication adverse to the director or officer establishes that his acts were committed in bad faith or were the result of active and deliberate dishonesty and material to the cause of action, or that such director or officer personally gained in fact a financial profit or other advantage to which he was not legally entitled.

Section 722(a) of the NYBCL provides that a corporation may indemnify a director or officer made, or threatened to be made, a party to any action other than a derivative action, whether civil or criminal, against judgments, fines, amounts paid in settlement and reasonable expenses, including attorneys' fees, actually and necessarily incurred as a result of such action or proceeding or any appeal therein, if such director or officer acted in good faith, for a purpose which he reasonably believed to be in, or not opposed to, the best interests of the corporation and, in criminal actions or proceedings, in addition, had no reasonable cause to believe that his conduct was unlawful.

Section 722(c) of the NYBCL provides that a corporation may indemnify a director or officer, made or threatened to be made a party in a derivative action, against amounts paid in settlement and reasonable expenses, including attorneys' fees, actually and necessarily incurred by him in connection with the defense or settlement of such action or in connection with an appeal therein if such director or officer acted in good faith, for a purpose which he reasonably believed to be in, or not opposed to, the best interests of the corporation, except that no indemnification will be available under Section 722(c) of the NYBCL in respect of a threatened or pending action which is settled or otherwise disposed of, or any claim as to which such director or officer shall have been adjudged liable to the corporation, unless and only to the extent that the court in which the action was brought, or, if no action was brought, any court of competent jurisdiction, determines, upon application, that, in view of all the circumstances of the case, the director or officer is fairly and reasonably entitled to indemnity for such portion of the settlement amount and expenses as the court deems proper.

Section 723 of the NYBCL specifies the manner in which payment of indemnification under Section 722 of the NYBCL or indemnification permitted under Section 721 of the NYBCL may be authorized by the corporation. It provides that indemnification may be authorized by the corporation. It provides that indemnification by a corporation is mandatory in any case in which the director or officer has been successful, whether on the merits or otherwise, in defending an action. In the event that the director or officer has not been successful or the action is settled, indemnification must be authorized by the appropriate corporate action as set forth in Section 723.

Section 724 of the NYBCL provides that, upon application by a director or officer, indemnification may be awarded by a court to the extent authorized. Section 722 and Section 723 of the NYBCL contain certain other miscellaneous provisions affecting the indemnification of directors and officers.

Section 726 of the NYBCL authorizes the purchase and maintenance of insurance to indemnify (1) a corporation for any obligation which it incurs as a result of the indemnification of directors and officers under the provisions of Article 7 of the NYBCL, (2) directors and officers in instances in which they may be indemnified by the corporation under the provisions of Article 7 of the NYBCL, and (3) directors and officers in instances in which they may not otherwise be indemnified by the corporation under the provisions of Article 7 of the NYBCL, provided the contract of insurance covering such directors and officers provides, in a manner acceptable to the New York State Superintendent of Financial Services, for a retention amount and for co-insurance.

The Company has purchased liability insurance for its officers and directors as permitted by Section 726 of the NYBCL.

**Item 7. Exemption from Registration Claimed.** 

Not applicable.

**Item 8. Exhibits.**

---

| | |
|:---|:---|
| **Exhibit** | **Description** |
| 4.1 | [Restated Certificate of Incorporation of Omnicom Group Inc. (filed as Exhibit 3.1 to Omnicom's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2011 (File No. 1-10551), filed with the Commission on October 20, 2011 and incorporated herein by reference).](https://www.sec.gov/Archives/edgar/data/29989/000002998911000007/exhibit31.htm) |
| 4.2 | [By-laws of Omnicom Group Inc., as amended and restated on October 17, 2024 (filed as Exhibit 3.1 to Omnicom's Current Report on Form 8-K dated October 17, 2024 (File No. 1-10551), filed with the Commission on October 18, 2024 and incorporated herein by reference).](https://www.sec.gov/Archives/edgar/data/29989/000121390024088967/ea021796601ex3-1_omnicom.htm) |
| 5.1\* | [Opinion of Latham & Watkins LLP.](ea027420801ex5-1_omnicom.htm) |
| 23.1\* | [Consent of Latham & Watkins LLP (included in Exhibit 5.1).](ea027420801ex5-1_omnicom.htm) |
| 23.2\* | [Consent of KPMG LLP.](ea027420801ex23-2_omnicom.htm) |
| 24.1\* | [Power of Attorney (included on signature page of this Registration Statement).](#POA_001) |
| 99.1 | [Omnicom 2026 Incentive Award Plan (filed as Annex A to the Company's Definitive Proxy Statement on Schedule 14A (File No. 1-10551), filed on December 22, 2025 and incorporated herein by reference).](https://www.sec.gov/Archives/edgar/data/29989/000121390025124548/ea0268945-02.htm#T231) |
| 107\* | [Filing Fee Table.](ea027420801ex-fee_omnicom.htm) |

---

\* Filed herewith.

**Item 9. Undertakings.** 

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) The undersigned Registrant hereby undertakes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) To include any prospectus required by Section 10(a)(3) of the Securities Act;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20% change in the maximum aggregate offering price set forth in the "Calculation of Filing Fee Table" in the effective Registration Statement;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) shall not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Commission by the Registrant pursuant to Section 13 or Section 15(d) of the Exchange Act that are incorporated by reference in this Registration Statement.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) That, for the purpose of determining any liability under the Securities Act, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial *bona fide* offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) The undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act, each filing of the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the Exchange Act that is incorporated by reference in the Registration Statement shall be deemed to be a new Registration Statement relating to the securities offered herein, and the offering of such securities at that time shall be deemed to be the initial *bona fide* offering thereof.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) Insofar as indemnification for liabilities arising under the Securities Act may be permitted to directors, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the Commission such indemnification is against public policy as expressed in the Securities Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act and will be governed by the final adjudication of such issue.

**SIGNATURES** 

Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York, State of New York, on this 28th day of January, 2026.

---

| | |
|:---|:---|
| **OMNICOM GROUP INC.** | **OMNICOM GROUP INC.** |
| By: | /s/ Philip J. Angelastro |
|  | Philip J. Angelastro |
|  | Executive Vice President and Chief Financial Officer |

---

**POWER OF ATTORNEY** 

Each person whose signature appears below hereby authorizes and appoints John D. Wren and Philip J. Angelastro, and each of them, with full power to act without the other, as attorney-in-fact and agent, with full power of substitution and resubstitution, to sign on his or her behalf, individually and in the capacities stated below, and to file any and all amendments, including post-effective amendments, to this Registration Statement and other documents in connection therewith, with the Commission, granting to said attorney-in-fact and agent full power and authority to perform any other act on behalf of the undersigned required to be done in the premises.

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| /s/ John D. Wren | Chairman and Chief Executive Officer and Director | January 28, 2026 |
| John D. Wren | (Principal Executive Officer) |  |
| /s/ Philip J. Angelastro | Executive Vice President and Chief Financial Officer | January 28, 2026 |
| Philip J. Angelastro | (Principal Financial Officer) |  |
| /s/ Andrew L. Castellaneta | Senior Vice President, Chief Accounting Officer | January 28, 2026 |
| Andrew L. Castellaneta | (Principal Accounting Officer) |  |
| /s/ Philippe Krakowsky | Co-President, Co-Chief Operating Officer, Director | January 28, 2026 |
| Philippe Krakowsky |  |  |
| /s/ Mary C. Choksi | Director | January 28, 2026 |
| Mary C. Choksi |  |  |
| /s/ Leonard S. Coleman, Jr. | Director | January 28, 2026 |
| Leonard S. Coleman, Jr. |  |  |
| /s/ Mark D. Gerstein | Director | January 28, 2026 |
| Mark D. Gerstein |  |  |
| /s/ Ronnie S. Hawkins | Director | January 28, 2026 |
| Ronnie S. Hawkins |  |  |
| /s/ Deborah J. Kissire | Director | January 28, 2026 |
| Deborah J. Kissire |  |  |
| /s/ Gracia C. Martore | Director | January 28, 2026 |
| Gracia C. Martore |  |  |
| /s/ Patrick Q. Moore | Director | January 28, 2026 |
| Patrick Q. Moore |  |  |
| /s/ Patricia Salas Pineda | Director | January 28, 2026 |
| Patricia Salas Pineda |  |  |
| /s/ Linda Johnson Rice | Director | January 28, 2026 |
| Linda Johnson Rice |  |  |
| /s/ Cassandra Santos | Director | January 28, 2026 |
| Cassandra Santos |  |  |
| /s/ Valerie M. Williams | Director | January 28, 2026 |
| Valerie M. Williams |  |  |
| /s/ E. Lee Wyatt Jr | Director | January 28, 2026 |
| E. Lee Wyatt Jr. |  |  |

---

## Exhibit 5.1

**Exhibit 5.1**

555 Eleventh Street, N.W., Suite 1000<br> Washington, D.C. 20004-1304<br> Tel: +1.202.637.2200 Fax: +1.202.637.2201<br> www.lw.com

---

| | | |
|:---|:---|:---|
| ![](ex5-1_001.jpg) | FIRM / AFFILIATE OFFICES | FIRM / AFFILIATE OFFICES |
| ![](ex5-1_001.jpg) | Austin | Milan |
| ![](ex5-1_001.jpg) | Beijing | Munich |
|  | Boston | New York |
|  | Brussels | Orange County |
|  | Chicago | Paris |
|  | Dubai | Riyadh |
|  | Düsseldorf | San Diego |
|  | Frankfurt | San Francisco |
|  | Hamburg | Seoul |
|  | Hong Kong | Silicon Valley |
|  | Houston | Singapore |
|  | London | Tel Aviv |
|  | Los Angeles | Tokyo |
|  | Madrid | Washington, D.C. |

---

January 28, 2026

Omnicom Group Inc.<br> 280 Park Avenue<br> New York, New York 10017

---

| | |
|:---|:---|
| Re: | Registration Statement on Form S-8; 27,390,000 shares of Common Stock, par value $0.15 per share, of Omnicom Group Inc. |

---

Ladies and Gentlemen:

We have acted as special counsel to Omnicom Group Inc., a New York corporation (the "Company"), in connection with the proposed issuance of up to 27,390,000 shares of common stock, $0.15 par value per share (the "Shares"), to be issued pursuant to the Omnicom 2026 Incentive Award Plan (the "Plan"). The Shares are included in a registration statement on Form S-8 under the Securities Act of 1933, as amended (the "Act"), filed with the Securities and Exchange Commission (the "Commission") on January 28, 2026 (the "Registration Statement"). This opinion is being furnished in connection with the requirements of Item 601(b)(5) of Regulation S-K under the Act, and no opinion is expressed herein as to any matter pertaining to the contents of the Registration Statement or related prospectus, other than as expressly stated herein with respect to the issue of the Shares.

As such counsel, we have examined such matters of fact and questions of law as we have considered appropriate for purposes of this letter. With your consent, we have relied upon certificates and other assurances of officers of the Company and others as to factual matters without having independently verified such factual matters. We are opining herein as to the Business Corporation Law of the State of New York, and we express no opinion with respect to any other laws.

**January 28, 2026**

**Page 2**

![](ex5-1_002.jpg)

Subject to the foregoing and the other matters set forth herein, it is our opinion that, as of the date hereof, when the Shares shall have been duly registered on the books of the transfer agent and registrar therefor in the name or on behalf of the holders, and have been issued by the Company for legal consideration in excess of par value in the circumstances contemplated by the Plan, assuming that the individual issuances, grants or awards under the Plan are duly authorized by all necessary corporate action and duly issued, granted or awarded and exercised in accordance with the requirements of law and the Plan (and the agreements and awards duly adopted thereunder and in accordance therewith), the issue and sale of the Shares will have been duly authorized by all necessary corporate action of the Company, and the Shares will be validly issued, fully paid and nonassessable. In rendering the foregoing opinion, we have assumed that the Company will comply with all applicable notice requirements regarding uncertificated shares provided in the Business Corporation Law of the State of New York.

This opinion is for your benefit in connection with the Registration Statement and may be relied upon by you and by persons entitled to rely upon it pursuant to the applicable provisions of the Act. We consent to your filing this opinion as an exhibit to the Registration Statement. In giving such consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Act or the rules and regulations of the Commission thereunder.

---

| |
|:---|
| Sincerely, |
| /s/ Latham & Watkins LLP |

---

## Exhibit 23.2

**Exhibit 23.2** 

KPMG LLP

Two Manhattan West

375 9th Avenue, 17th Floor

New York, NY 10001

**Consent of Independent Registered Public Accounting Firm** 

We consent to the use of our report dated February 5, 2025, with respect to the consolidated financial statements of Omnicom Group Inc. and subsidiaries (the Company) including the consolidated balance sheets as of December 31, 2024 and 2023, the related consolidated statements of income, comprehensive income, equity, and cash flows for each of the years in the three-year period ended December 31, 2024, and the related notes and financial statement schedule II (collectively, the consolidated financial statements), and the effectiveness of internal control over financial reporting, incorporated herein by reference.

/s/ KPMG LLP

New York, New York

January 28, 2026

KPMG LLP, a Delaware limited liability partnership, and its subsidiaries are part of the KPMG global organization of independent member firms affiliated with KPMG International Limited, a private English company limited by guarantee.

## Ex-Filing

?xml version='1.0' encoding='ASCII'? Filing Fee Exhibit

**Ex-Filing Fees**

**CALCULATION OF FILING FEE TABLES**

**S-8**

**OMNICOM GROUP INC.**

**Table 1: Newly Registered Securities**

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| | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| **Security Type** | **Security Class Title** | **Notes** | **Fee Calculation<br> Rule** | **Amount Registered** | **Proposed Maximum Offering<br> Price Per Unit** | **Maximum Aggregate Offering Price** | **Fee Rate** | **Amount of Registration Fee** |
| Equity | Common Stock, Par value $0.15 per share | (1) | Other | 27390000 | $79.07 | $2165727300.00 | 0.0001381 | $299086.94 |
| Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: | $2165727300.00 |  | 299086.94 |
| Total Fee Offsets: | Total Fee Offsets: | Total Fee Offsets: | Total Fee Offsets: | Total Fee Offsets: | Total Fee Offsets: |  |  | 0.00 |
| Net Fee Due: | Net Fee Due: | Net Fee Due: | Net Fee Due: | Net Fee Due: | Net Fee Due: |  |  | $299086.94 |

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**__________________________________________ Offering Note(s)**

&nbsp;&nbsp;&nbsp;&nbsp;(1) This Registration Statement on Form S-8 is being filed by Omnicom Group Inc. ("Omnicom") to register 27,390,000 shares of Omnicom common stock that may become issuable pursuant to awards that may be granted, issued, purchased and/or settled under the Omnicom 2026 Incentive Award Plan (the "Plan"). Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"), this registration statement shall also include such additional indeterminate number of shares of common stock of Omnicom that become issuable under the Plan by reason of any stock dividend, stock split, recapitalization or similar transaction effected without Omnicom's receipt of consideration, which would increase the number of outstanding shares of common stock. Estimated solely for the purpose of calculating the amount of the registration fee pursuant to Rule 457(c) of the Securities Act, on the basis of the average of the high and low sale prices of a share of Omnicom common stock as reported on the New York Stock Exchange on January 22, 2026.