---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-086203"
form_type: "8-K"
ticker: "OMC"
cik: "0000029989"
company_name: "OMNICOM GROUP INC."
filed_at: "2025-09-09T23:59:59+00:00"
generated_at: "2026-05-17T07:24:13.052101+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Omnicom extends IPG exchange offer expiration to Sept 30; over 93% of notes tendered

## Summary
- Expiration date moved from Sept 9 to Sept 30, 2025; settlement expected within 2 business days after.
- As of Sept 8, $2.75B of $2.95B aggregate IPG notes tendered (93.21%), with consent majorities in each series.
- IPG executed supplemental indentures on Aug 22 to eliminate certain covenants; consents no longer revocable.
- Regulatory approval process continuing; companies expect to close merger this year.
- Omnicom may further extend expiration if merger completion not anticipated by Sept 30.

## SEC filing metadata
- accession: 0001213900-25-086203
- form_type: 8-K
- ticker: OMC
- cik: 0000029989
- company_name: OMNICOM GROUP INC.
- filed_at: 2025-09-09T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/29989/000121390025086203/0001213900-25-086203-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/29989/000121390025086203/ea0256350-8k_omnicom.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-086203
- JSON: https://secwatch.observer/filing/0001213900-25-086203.json
- Plain text: https://secwatch.observer/filing/0001213900-25-086203.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.