# Interpublic Group of Companies, Inc.
> Interpublic · IPG (delisted from NYSE on November 26, 2025 upon close of Omnicom acquisition) · New York, New York (pre-merger; operations now consolidated under Omnicom Group)
- Profile type: Company
- Profile status: baseline
- Last updated: 2026-05-03T00:00:00.000Z
- Canonical URL: https://thestateofstreaming.com/companies/interpublic-group/
- Also known as: IPG, The Interpublic Group, Interpublic Group, The Interpublic Group of Companies, Interpublic, InterpublicGroup, Interpublic Group of Companies
## Summary
The Interpublic Group of Companies, Inc. (NYSE: IPG, delisted) was one of the Big Four marketing-services holding companies — alongside Omnicom, WPP, and Publicis — until Omnicom completed its acquisition on November 26, 2025. IPG is no longer an independent company; its agencies (McCann, FCB, IPG Mediabrands, Acxiom, Kinesso) now operate under Omnicom Group.

## Company facts

- Ticker: IPG (delisted from NYSE on November 26, 2025 upon close of Omnicom acquisition)
- Founded: 1961
- Headquarters: New York, New York (pre-merger; operations now consolidated under Omnicom Group)
- Domain: interpublic.com


## Latest metrics

- Revenue: $10.7 billion FY2024 (last full year as standalone; down 1.8% YoY) — IPG was acquired by Omnicom on November 26, 2025 and no longer files standalone results
- As of: 2024-12-31
- Source: https://investors.interpublic.com/sec-filings/sec-filing/10-k/0000051644-25-000024


## Recent filings

- 2025-10-22 — 10-Q: IPG's final 10-Q as a standalone public company, covering the quarter ended September 30, 2025. Disclosed $22.8M of Q3 deal-related costs ($38.5M YTD) tied to the pending Omnicom acquisition (legal, professional, filing fees, retention compensation). Omnicom acquisition closed approximately one month later on November 26, 2025; IPG no longer files independently with the SEC. (https://www.sec.gov/Archives/edgar/data/51644/000005164425000061/ipg-20250930.htm)
- 2025-02-20 — 10-K: IPG's last full-year 10-K as a standalone public company (accession 0000051644-25-000024). FY2024 total revenue $10.7B (down 1.8% YoY); revenue before billable expenses $9.2B (down 2.3%); net income $689.5M; diluted EPS $1.83. Filed roughly two months after the December 9, 2024 announcement of the Omnicom merger. (https://investors.interpublic.com/sec-filings/sec-filing/10-k/0000051644-25-000024)


## Key facts

- The Interpublic Group of Companies, Inc. was formed in January 1961 as the first marketing-services management holding company, created when McCann-Erickson restructured itself as a holding entity with McCann-Erickson as its founding subsidiary — pioneering the multi-agency holding-company model later adopted across the industry. — Wikipedia (Interpublic Group): https://en.wikipedia.org/wiki/The_Interpublic_Group_of_Companies
- IPG's pre-merger holding-company portfolio spanned five major networks — FCB, IPG Mediabrands, McCann Worldgroup, MullenLowe Group, and Marketing Specialists — plus specialty agencies in public relations, sports marketing, talent representation, and healthcare. The Mediabrands media-buying unit was formed in July 2008; McCann Worldgroup was formed in 1997. — Wikipedia (Interpublic Group): https://en.wikipedia.org/wiki/The_Interpublic_Group_of_Companies
- IPG acquired the Marketing Solutions business of database-marketing firm Acxiom in 2018 for approximately $2.3 billion, anchoring IPG's identity-and-data stack. Acxiom subsequently sat alongside Kinesso and Matterkind (formerly Cadreon) as IPG's tech-and-data suite — the assets most-watched in the Omnicom-IPG combination. — Wikipedia (Interpublic Group): https://en.wikipedia.org/wiki/The_Interpublic_Group_of_Companies
- IPG's last full-year results as a standalone public company (FY2024 10-K, filed February 20, 2025; accession 0000051644-25-000024) reported total revenue of $10.7 billion (down 1.8% YoY), revenue before billable expenses of $9.2 billion (down 2.3%), net income of $689.5 million, and diluted EPS of $1.83. — IPG Investor Relations / SEC EDGAR: https://investors.interpublic.com/sec-filings/sec-filing/10-k/0000051644-25-000024
- IPG's final 10-Q as a standalone public company covered the quarter ended September 30, 2025. The filing disclosed $22.8 million of Q3 2025 deal-related costs and $38.5 million year-to-date tied to the pending Omnicom acquisition (legal, professional, filing fees, retention-related compensation). — IPG 10-Q Q3 2025 (SEC EDGAR): https://www.sec.gov/Archives/edgar/data/51644/000005164425000061/ipg-20250930.htm
- Omnicom completed its acquisition of Interpublic Group on November 26, 2025. IPG shareholders received 0.344 Omnicom shares per IPG share; legacy Omnicom shareholders own approximately 60.6% of the combined company and legacy IPG shareholders 39.4%, on a fully diluted basis. The combined company trades under OMC; IPG's separate NYSE listing was delisted at close. — PR Newswire / Omnicom Group: https://www.prnewswire.com/news-releases/omnicom-completes-acquisition-of-interpublic-forming-the-worlds-leading-marketing-and-sales-company-built-for-intelligent-growth-in-the-next-era-302627141.html
- On December 1, 2025, Omnicom announced the go-forward strategy and executive leadership for the combined entity. IPG CEO Philippe Krakowsky stepped down at close; Omnicom CEO John Wren leads the combined company. — PR Newswire / Omnicom Group: https://www.prnewswire.com/news-releases/omnicom-announces-strategy-and-executive-leadership-following-acquisition-of-interpublic-302629061.html
- The European Commission approved the Omnicom-IPG combination unconditionally under the EU Merger Regulation, the final regulatory clearance required for the deal to close. The combined company has pro forma combined revenue in excess of $25 billion. — European Commission: https://ec.europa.eu/commission/presscorner/detail/en/ip_25_2777


## Related

- omnicom group (Acquirer; acquisition closed November 26, 2025. IPG operations now consolidated under Omnicom.) — https://thestateofstreaming.com/companies/omnicom-group/
- wpp (Historical Big Four peer holding company) — https://thestateofstreaming.com/companies/wpp/
- publicis groupe (Historical Big Four peer holding company) — https://thestateofstreaming.com/companies/publicis-groupe/
- dentsu (Historical Big Four peer holding company) — https://thestateofstreaming.com/companies/dentsu/
- mark penn (Stagwell CEO and public critic of the Omnicom-IPG combination during the regulatory window) — https://thestateofstreaming.com/people/mark-penn/


## External coverage

- Interpublic Group / Omnicom Group: IPG Investor Relations — Financial Reports (legacy archive) (https://investors.interpublic.com/sec-filings/financial-reports)
- SEC EDGAR: SEC EDGAR — Interpublic Group filings (CIK 0000051644) (https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0000051644&type=10-K&dateb=&owner=include&count=10)
- 2025-11-26 — PR Newswire / Omnicom Group: Omnicom Completes Acquisition of Interpublic (https://www.prnewswire.com/news-releases/omnicom-completes-acquisition-of-interpublic-forming-the-worlds-leading-marketing-and-sales-company-built-for-intelligent-growth-in-the-next-era-302627141.html)
- 2025-11-26 — Ad Age: Omnicom completes IPG deal — how the new No. 1 agency company stacks up (https://adage.com/agencies/aa-omnicom-ipg-deal-closes-explainer/)
- 2025-11-26 — Axios: Omnicom completes IPG deal to be world's largest advertising holding company (https://www.axios.com/2025/11/26/omnicom-ipg-deal)
- 2025-11-01 — European Commission: Commission approves unconditionally the acquisition of IPG by Omnicom (https://ec.europa.eu/commission/presscorner/detail/en/ip_25_2777)

## Profile
The Interpublic Group of Companies, Inc. was one of the legacy 'Big Four' marketing-services holding companies — alongside Omnicom, WPP, and Publicis — from its 1961 formation as the industry's first holding-company structure until its acquisition by Omnicom Group closed on November 26, 2025. IPG's pre-merger portfolio spanned five major agency networks (FCB, IPG Mediabrands, McCann Worldgroup, MullenLowe Group, Marketing Specialists), the Acxiom data-and-identity unit acquired in 2018 for approximately $2.3 billion, and adjacent specialty agencies in public relations, sports marketing, talent representation, and healthcare.

This profile is preserved as a historical entity. Years of trade coverage — both ours and the broader industry's — reference IPG as a standalone Big Four player, and many of its subsidiary brands (Mediabrands, McCann, Magna, Acxiom, Kinesso, Matterkind) remain active under the Omnicom umbrella. Readers researching pre-merger context need the entity to resolve. For current operating context, see the Omnicom Group profile.

The merger arc: announced December 9, 2024 in an all-stock deal valued at approximately $13.25 billion; shareholders of both companies approved on March 18, 2025; final regulatory clearance came from the European Commission in early November 2025; the deal closed on November 26, 2025. IPG shareholders received 0.344 Omnicom shares per IPG share, leaving legacy Omnicom holders with roughly 60.6% of the combined entity and legacy IPG holders with 39.4%. IPG was delisted from the NYSE at close; IPG CEO Philippe Krakowsky stepped down; Omnicom CEO John Wren leads the combined company. IPG's last standalone full-year revenue was $10.7 billion (FY2024, down 1.8% YoY), and its final standalone quarterly filing (Q3 2025 10-Q) disclosed $38.5 million in year-to-date deal-related costs tied to the pending acquisition.
## Coverage on The State of Streaming
- [Omnicom Says It's Cutting Out the Ad-Tech Middlemen. The Holdco-Direct Era Just Went Live.](https://thestateofstreaming.com/advertising-adtech/2026/05/omnicom-ai-agent-adtech-disintermediation/) — 2026-05-04

## Tags

- historical-entity
- acquired
- holdco
- marketing-services
- big-four
- omnicom-acquired
- delisted

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