Insiders / Walsh Matthew M / Activity
Activity — Walsh Matthew M
18 moves.
| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 27, 2026 | Other | OGN Organon & Co. Common Stock | $106.7K | -15K -7.96% | 172,196 0.07% of shares | low |
| Mar 31, 2026 | Other | OGN Organon & Co. Common Stock | $42.1K | -7K -3.35% | 212,746 0.08% of shares | low |
| Mar 29, 2026 | Other | OGN Organon & Co. Common Stock | $30.1K | -5K -2.64% | 190,660 0.07% of shares | low |
| Feb 27, 2026 | Other | OGN Organon & Co. Common Stock | $29.8K | -4K -2.23% | 180,751 0.07% of shares | low |
| Mar 31, 2026 | Other | OGN Organon & Co. Common Stock | $23.5K | -4K -2.04% | 198,580 0.08% of shares | low |
| May 14, 2026 | Exercise | CERT Certara, Inc. Common Stock | $0 | +16K +7.98% | 213,316 0.14% of shares | low |
| Mar 31, 2026 | Exercise | OGN Organon & Co. Common Stock | $0 | +22K +10.85% | 220,126 0.08% of shares | low |
| Mar 31, 2026 | Exercise | OGN Organon & Co. Common Stock | $0 | +12K +6.32% | 202,707 0.08% of shares | low |
| Mar 29, 2026 | Exercise | OGN Organon & Co. Common Stock | $0 | +15K +8.34% | 195,822 0.07% of shares | low |
| Feb 27, 2026 | Grant | OGN Organon & Co. Common Stock | $0 | +12K +6.98% | 184,216 0.07% of shares | low |
| Feb 27, 2026 | Grant | OGN Organon & Co. Common Stock | $0 | +43K +29.48% | 187,083 0.07% of shares | low |
| May 14, 2026 | Grant | CERT Certara, Inc. Restricted Stock Units | — | +33K | 33,222 0.02% of shares | low |
| May 14, 2026 | Exercise | CERT Certara, Inc. Restricted Stock Units | — | -16K -100.00% | 0 0.00% of shares | low |
| Mar 31, 2026 | Exercise | OGN Organon & Co. Restricted Stock Units | — | -22K -33.33% | 43,094 0.02% of shares | low |
| Mar 31, 2026 | Exercise | OGN Organon & Co. Restricted Stock Units | — | -12K -100.00% | 0 0.00% of shares | low |
| Mar 31, 2026 | Grant | OGN Organon & Co. Restricted Stock Units | — | +83K | 83,472 0.03% of shares | low |
| Mar 31, 2026 | Grant | OGN Organon & Co. Restricted Stock Units | — | +321K | 321,368 0.12% of shares | low |
| Mar 29, 2026 | Exercise | OGN Organon & Co. Restricted Stock Units | — | -15K -50.00% | 15,071 <0.01% of shares | low |