Matthew M. Walsh, CFO of Organon & Co. ($OGN), made one open market purchase of OGN shares in the past year, totaling $100,548. His most recent buy occurred on May 5, 2025. This ranks 2190th among nearly 5,000 insiders by purchase value, well below the average of $1.46 million across 3.3 transactions. Walsh reported no open market sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 12047 | $0.00 | 202,707.0000 | 260,653,000 | 6.32% | 0.00% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 21546 | $0.00 | 43,094.0000 | 260,653,000 | 33.33% | 0.01% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 12047 | $0.00 | 0.0000 | 260,653,000 | 100.00% | 0.00% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Restricted Stock Units | 83472 | $0.00 | 83,472.0000 | 260,653,000 | 9999.99% | 0.03% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Restricted Stock Units | 321368 | $0.00 | 321,368.0000 | 260,653,000 | 9999.99% | 0.12% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 7380 | $5.70 | 212,746.0000 | 260,653,000 | 3.35% | 0.00% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 21546 | $0.00 | 220,126.0000 | 260,653,000 | 10.85% | 0.01% |
| March 31, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 4127 | $5.70 | 198,580.0000 | 260,653,000 | 2.04% | 0.00% |
| March 29, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 15071 | $0.00 | 15,071.0000 | 260,653,000 | 50.00% | 0.01% |
| March 29, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 15071 | $0.00 | 195,822.0000 | 260,653,000 | 8.34% | 0.01% |
| March 29, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 5162 | $5.84 | 190,660.0000 | 260,653,000 | 2.64% | 0.00% |
| Feb. 27, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Common Stock | 42599 | $0.00 | 187,083.0000 | 260,653,000 | 29.48% | 0.02% |
| Feb. 27, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 4117 | $7.23 | 180,751.0000 | 260,653,000 | 2.23% | 0.00% |
| Feb. 27, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Common Stock | 12020 | $0.00 | 184,216.0000 | 260,653,000 | 6.98% | 0.00% |
| Feb. 27, 2026 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 14887 | $7.17 | 172,196.0000 | 260,653,000 | 7.96% | 0.01% |
| May 21, 2025 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | A | Restricted Stock Units | 15757 | $0.00 | 15,757.0000 | 161,958,810 | 9999.99% | 0.01% |
| May 21, 2025 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | M | Common Stock | 11928 | $0.00 | 197,559.0000 | 161,958,810 | 6.43% | 0.01% |
| May 21, 2025 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | M | Restricted Stock Units | 11928 | $0.00 | 0.0000 | 161,958,810 | 100.00% | 0.01% |
| May 5, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | P | Common Stock | 11400 | $8.82 | 144,484.0000 | 259,152,000 | 8.57% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Restricted Stock Units | 64640 | $0.00 | 64,640.0000 | 259,152,000 | 9999.99% | 0.02% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 15070 | $0.00 | 130,458.0000 | 259,152,000 | 13.06% | 0.01% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 7422 | $14.51 | 123,036.0000 | 259,152,000 | 5.69% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 12046 | $0.00 | 135,082.0000 | 259,152,000 | 9.79% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 5933 | $14.51 | 129,149.0000 | 259,152,000 | 4.39% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 7754 | $0.00 | 136,903.0000 | 259,152,000 | 6.00% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 3819 | $14.51 | 133,084.0000 | 259,152,000 | 2.79% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Stock Option (right to buy) | 317656 | $0.00 | 317,656.0000 | 259,152,000 | 9999.99% | 0.12% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 15070 | $0.00 | 30,142.0000 | 259,152,000 | 33.33% | 0.01% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 12046 | $0.00 | 12,047.0000 | 259,152,000 | 50.00% | 0.00% |
| March 31, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 7754 | $0.00 | 0.0000 | 259,152,000 | 100.00% | 0.00% |
| Feb. 20, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 10662 | $14.92 | 111,726.0000 | 259,152,000 | 8.71% | 0.00% |
| Feb. 20, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Common Stock | 30414 | $0.00 | 122,388.0000 | 259,152,000 | 33.07% | 0.01% |
| Feb. 20, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 1908 | $15.29 | 115,388.0000 | 259,152,000 | 1.63% | 0.00% |
| Feb. 20, 2025 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Common Stock | 5570 | $0.00 | 117,296.0000 | 259,152,000 | 4.99% | 0.00% |
| Sept. 3, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Common Stock | 7189 | $0.00 | 95,515.0000 | 256,270,000 | 8.14% | 0.00% |
| Sept. 3, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 3541 | $20.35 | 91,974.0000 | 256,270,000 | 3.71% | 0.00% |
| May 21, 2024 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | M | Restricted Stock Units | 8663 | $0.00 | 0.0000 | 160,284,901 | 100.00% | 0.01% |
| May 21, 2024 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | A | Restricted Stock Units | 11928 | $0.00 | 11,928.0000 | 160,284,901 | 9999.99% | 0.01% |
| May 21, 2024 | Certara, Inc. | $CERT | WALSH MATTHEW M | Not found | M | Common Stock | 8663 | $0.00 | 185,631.0000 | 160,284,901 | 4.90% | 0.01% |
| May 4, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 4093 | $19.61 | 88,326.0000 | 256,270,000 | 4.43% | 0.00% |
| May 4, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 8310 | $0.00 | 0.0000 | 256,270,000 | 100.00% | 0.00% |
| May 4, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 8310 | $0.00 | 92,419.0000 | 256,270,000 | 9.88% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 12046 | $0.00 | 24,093.0000 | 256,270,000 | 33.33% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 5933 | $18.80 | 84,109.0000 | 256,270,000 | 6.59% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 12046 | $0.00 | 90,042.0000 | 256,270,000 | 15.44% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 3819 | $18.80 | 77,996.0000 | 256,270,000 | 4.67% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 7753 | $0.00 | 7,754.0000 | 256,270,000 | 50.00% | 0.00% |
| March 31, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 7753 | $0.00 | 81,815.0000 | 256,270,000 | 10.47% | 0.00% |
| March 29, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Restricted Stock Units | 45212 | $0.00 | 45,212.0000 | 256,270,000 | 9999.99% | 0.02% |
| March 29, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Stock Option (right to buy) | 185185 | $0.00 | 185,185.0000 | 256,270,000 | 9999.99% | 0.07% |
| Feb. 28, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 11393 | $18.04 | 74,062.0000 | 256,270,000 | 13.33% | 0.00% |
| Feb. 28, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 33044 | $0.00 | 0.0000 | 256,270,000 | 100.00% | 0.01% |
| Feb. 28, 2024 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 33044 | $0.00 | 85,455.0000 | 256,270,000 | 63.05% | 0.01% |
| Aug. 5, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 22347 | $0.00 | 0.0000 | 255,169,000 | 100.00% | 0.01% |
| Aug. 5, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 22347 | $0.00 | 63,417.0000 | 255,169,000 | 54.41% | 0.01% |
| Aug. 5, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 11006 | $21.53 | 52,411.0000 | 255,169,000 | 17.35% | 0.00% |
| May 4, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 8310 | $0.00 | 8,310.0000 | 255,169,000 | 50.00% | 0.00% |
| May 4, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 4043 | $24.24 | 41,070.0000 | 255,169,000 | 8.96% | 0.00% |
| May 4, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 8310 | $0.00 | 45,113.0000 | 255,169,000 | 22.58% | 0.00% |
| March 31, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Restricted Stock Units | 7753 | $0.00 | 15,507.0000 | 255,169,000 | 33.33% | 0.00% |
| March 31, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Restricted Stock Units | 36139 | $0.00 | 36,139.0000 | 255,169,000 | 9999.99% | 0.01% |
| March 31, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | F | Common Stock | 2656 | $23.09 | 36,803.0000 | 255,169,000 | 6.73% | 0.00% |
| March 31, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | M | Common Stock | 7753 | $0.00 | 39,459.0000 | 255,169,000 | 24.45% | 0.00% |
| March 31, 2023 | Organon & Co. | $OGN | WALSH MATTHEW M | Chief Financial Officer | A | Stock Option (right to buy) | 129770 | $0.00 | 129,770.0000 | 255,169,000 | 9999.99% | 0.05% |