18 insiders reported 110 Form 4 transactions for OMNICOM GROUP INC. (OMC) over the past 18 months (most recent 2026-08-18). Recent activity: Simm Daryl (Co-President and Co-COO) Sell 3,172 shares, Castellaneta Andrew (SVP, Chief Accounting Officer) Sell 1,348 shares, Januzzi Louis F (Senior VP, Gen. Counsel & Sec.) Sell 1,308 shares, Januzzi Louis F (Senior VP, Gen. Counsel & Sec.) Buy 7,720 shares, Hawkins Ronnie S. (Director) Buy 704 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | Simm Daryl | Co-President and Co-COO | Sell | 3,172 | $277,772 |
| 2026-08-18 | Castellaneta Andrew | SVP, Chief Accounting Officer | Sell | 1,348 | $118,044 |
| 2026-08-18 | Januzzi Louis F | Senior VP, Gen. Counsel & Sec. | Sell | 1,308 | $114,542 |
| 2026-07-20 | Januzzi Louis F | Senior VP, Gen. Counsel & Sec. | Buy | 7,720 | $0 |
| 2026-07-06 | Hawkins Ronnie S. | Director | Buy | 704 | $0 |
| 2026-07-06 | COLEMAN LEONARD S JR | Director | Buy | 704 | $0 |
| 2026-07-06 | RICE LINDA JOHNSON | Director | Buy | 704 | $0 |
| 2026-07-06 | CHOKSI MARY C | Director | Buy | 704 | $0 |
| 2026-07-06 | WYATT E LEE | Director | Buy | 704 | $0 |
| 2026-07-06 | Moore Patrick Q | Director | Buy | 704 | $0 |
| 2026-07-06 | Kissire Deborah J. | Director | Buy | 704 | $0 |
| 2026-07-06 | Williams Valerie | Director | Buy | 704 | $0 |
| 2026-07-06 | MARTORE GRACIA C | Director | Buy | 704 | $0 |
| 2026-07-06 | Pineda Patricia Salas | Director | Buy | 704 | $0 |
| 2026-07-06 | Gerstein Mark D | Director | Buy | 704 | $0 |
| 2026-07-06 | Santos Cassandra | Director | Buy | 704 | $0 |
| 2026-07-06 | Gerstein Mark D | Director | Buy | 309 | $0 |
| 2026-05-27 | WREN JOHN | Chairman and CEO | Buy | 75,938 | $0 |
| 2026-05-27 | ANGELASTRO PHILIP J | Executive Vice President & CFO | Buy | 48,818 | $0 |
| 2026-05-27 | Simm Daryl | Co-President and Co-COO | Buy | 54,242 | $0 |
| 2026-05-27 | WREN JOHN | Chairman and CEO | Sell | 38,767 | $2.9M |
| 2026-05-27 | ANGELASTRO PHILIP J | Executive Vice President & CFO | Sell | 24,922 | $1.9M |
| 2026-05-27 | Simm Daryl | Co-President and Co-COO | Sell | 22,931 | $1.7M |
| 2026-05-19 | WREN JOHN | Chairman and CEO | Sell | 4,397 | $311,440 |
| 2026-05-19 | ANGELASTRO PHILIP J | Executive Vice President & CFO | Sell | 4,476 | $317,035 |
Source: SEC Form 4 filings · as of 2026-08-18