OMNICOM GROUP INC. — DEFA14A Filings
12 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by OMNICOM GROUP INC. (OMC), sorted by most recent first. Each row links to the full filing on EdgarLookup. OMNICOM GROUP INC. has filed 12 DEFA14A documents with the SEC since 2015. To view all SEC filings by OMNICOM GROUP INC., see the full filings list.
All
10-K
10-K/A
10-K405
10-Q
10-Q/A
11-K
11-K/A
144
144/A
3
4
4/A
424B2
424B3
424B5
425
5
8-A12B
8-K
ARS
CERT
CORRESP
DEF 14A
DEFA14A
DEFR14A
DEFS14A
EFFECT
FWP
NO ACT
POS AM
POSASR
PRE 14A
PRES14A
S-3
S-3/A
S-3ASR
S-4
S-4/A
S-8
S-8 POS
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC 14D1
SC 14D1/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001213900-26-034815 | Mar 26, 2026 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001013762-25-003438 | Mar 27, 2025 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001213900-24-027224 | Mar 28, 2024 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0001213900-23-022357 | Mar 23, 2023 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-22-001130 | Apr 20, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-22-000840 | Mar 24, 2022 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0000891092-21-003555 | Apr 19, 2021 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-21-000824 | Mar 25, 2021 | — |
| DEFA14A | DEFINITIVE ADDITIONAL PROXY SOLICITING MATERIALS | 0001206774-19-001289 | Apr 10, 2019 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0000891092-16-014749 | May 10, 2016 | — |
| DEFA14A | DEFINITIVE ADDITIONAL MATERIALS | 0000891092-16-014351 | Apr 26, 2016 | — |
| DEFA14A | ADDITIONAL PROXY MATERIALS | 0000891092-10-001848 | May 6, 2010 | — |