# EDGAR Filing Document

**Accession Number:** 0001772283
**File Stem:** 0001213900-26-022469
**Filing Date:** 2026-3
**Character Count:** 7768
**Document Hash:** 881e48b159c694f7dbdafefaaf77f907
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-022469.hdr.sgml**: 20260302

**ACCESSION NUMBER**: 0001213900-26-022469

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260302

**DATE AS OF CHANGE**: 20260302

**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:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-10551
- **FILM NUMBER:** 26709644

**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
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Omnicom Finance Holdings plc
- **CENTRAL INDEX KEY:** 0001772283
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-ADVERTISING AGENCIES [7311]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** X0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38969
- **FILM NUMBER:** 26709645

**BUSINESS ADDRESS:**
- **STREET 1:** BANKSIDE 3, 90-100 SOUTHWARK STREET
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** SE1 0SW
- **BUSINESS PHONE:** 4402072987007

**MAIL ADDRESS:**
- **STREET 1:** BANKSIDE 3, 90-100 SOUTHWARK STREET
- **CITY:** LONDON
- **STATE:** X0
- **ZIP:** SE1 0SW

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Omnicom Finance Holdings PLC
- **DATE OF NAME CHANGE:** 20190329

**UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION<br> Washington, D.C. 20549<br>FORM 8-A<br>FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES<br> PURSUANT TO SECTION 12(b) OR (g) OF THE<br> SECURITIES EXCHANGE ACT OF 1934**

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| |
|:---|
| **Omnicom Group Inc.** |
| (Exact name of registrant as specified in its charter) |

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

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| | |
|:---|:---|
| **280 Park Avenue**<br> **New York, NY** | **10017** |
| (Address of principal executive offices) | (Zip Code) |

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| |
|:---|
| **Omnicom Finance Holdings plc** |
| (Exact name of registrant as specified in its charter) |

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| | |
|:---|:---|
| **England and Wales** | **Not Applicable** |
| (State or other jurisdiction of incorporation or organization) | (I.R.S. Employer Identification No.) |

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| | |
|:---|:---|
| **Bankside 3, 90-100 Southwark Street**<br> **London, United Kingdom** | **SE1 0SW** |
| (Address of principal executive offices) | (Zip Code) |

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Securities to be registered pursuant to Section 12(b) of the act:

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| | |
|:---|:---|
| Title of each class to be registered | Name of each exchange on which each class is to be registered |
| **3.850% Notes due 2034** | **New York Stock Exchange** |

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If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ☒

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ☐

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ☐

Securities Act registration statement or Regulation A offering statement file number to which this form relates: 333-282748 and 333-282748-02 (if applicable)

Securities to be registered pursuant to Section 12(g) of the Act:

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| |
|:---|
| **None** |
| (Title of class) |

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**INFORMATION REQUIRED IN REGISTRATION STATEMENT**

Omnicom Group Inc. ("OGI") and Omnicom Finance Holdings plc ("OFHP" and, together with OGI, the "Registrants") have filed with the Securities and Exchange Commission (the "Commission") pursuant to Rule 424(b) under the Securities Act of 1933, as amended, a prospectus supplement, dated February 25, 2026 (the "Prospectus Supplement") and the accompanying prospectus, dated October 21, 2024 (the "Base Prospectus"), contained in the Registrants' effective Registration Statement on Form S-3 (Registration Nos. [333-282748](http://www.sec.gov/Archives/edgar/data/29989/000121390024089287/ea0217608-01.htm) and [333-282748-02](http://www.sec.gov/Archives/edgar/data/29989/000121390024089287/ea0217608-01.htm)), which Registration Statement was filed with the Commission on October 21, 2024, relating to the securities to be registered hereunder. The Prospectus Supplement relates to €600 million aggregate principal amount of 3.850% Senior Notes due 2034 (the "Notes") issued by OFHP. The Notes are fully and unconditionally guaranteed by OGI. The Registrants incorporate by reference the Base Prospectus and the Prospectus Supplement to the extent set forth below.

**Item 1. Description of Registrant's Securities to be Registered.**

The descriptions under the heading "Description of Notes" in the Prospectus Supplement and "Description of International Debt Securities" in the Base Prospectus are incorporated by reference herein. Copies of such descriptions have been filed with The New York Stock Exchange.

**Item 2. Exhibits.**

4.1 Base Indenture, dated as of March 6, 2024, among Omnicom Finance Holdings plc, as issuer, Omnicom Group Inc., as guarantor, and Deutsche
Bank Trust Company Americas, as trustee (incorporated by reference to Exhibit 4.1 to Omnicom Group Inc.'s Current Report on [Form 8-K](http://www.sec.gov/Archives/edgar/data/29989/000121390024020451/ea0201276-8k_omnicom.htm) (File No. 001-10551), filed on March 6, 2024).

4.2 Second Supplemental Indenture, dated as of March 2, 2026, among Omnicom Finance Holdings plc, as issuer, Omnicom Group Inc., as guarantor,
and Deutsche Bank Trust Company Americas, as trustee (incorporated by reference to [Exhibit 4.3](https://www.sec.gov/Archives/edgar/data/29989/000121390026022415/ea027850901ex4-3.htm) to Omnicom Group Inc.'s Current Report
on [Form 8-K](https://www.sec.gov/Archives/edgar/data/29989/000121390026022415/0001213900-26-022415-index.htm) (File No. 001-10551), filed on March 2, 2026).

4.3 Form of 3.850% Notes due
2034 (included in [Exhibit 4.2](https://www.sec.gov/ix?doc=/Archives/edgar/data/29989/000121390026022415/ea0278509-8k_omnicom.htm)).

**SIGNATURE**

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, each registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

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| | |
|:---|:---|
| Omnicom Group Inc. | Omnicom Group Inc. |
| By: | /s/ Philip J. Angelastro |
| Name: | Philip J. Angelastro |
| Title: | Executive Vice President and Chief |
|  | Financial Officer |
| Date: March 2, 2026 | Date: March 2, 2026 |
| Omnicom Finance Holdings plc | Omnicom Finance Holdings plc |
| By: | /s/ David Barry |
| Name: | David Barry |
| Title: | Director |
| Date: March 2, 2026 | Date: March 2, 2026 |

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