Anthony O'Sullivan, Chief Development Officer at TMC the metals Co Inc. ($TMC), sold about $4.7 million in TMC stock through seven open market transactions over the past year. His most recent sale occurred on December 2, 2025. These sales rank 2,021st among 11,678 insiders in our database, where the average is about $8.6 million across roughly six transactions. O'Sullivan made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec. 2, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $6.77 | 2,025,667.0000 | 405,506,978 | 2.41% | 0.01% |
| Nov. 28, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $6.51 | 2,075,667.0000 | 405,506,978 | 2.35% | 0.01% |
| Sept. 23, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 1000000 | $0.00 | 2,125,667.0000 | 366,626,500 | 88.84% | 0.27% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class A Special Shares | 5454 | $0.00 | 5,454.0000 | 366,626,500 | 9999.99% | 0.00% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Common Shares | 250000 | $0.65 | 1,375,667.0000 | 366,626,500 | 22.21% | 0.07% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 250000 | $5.25 | 1,125,667.0000 | 366,626,500 | 18.17% | 0.07% |
| May 27, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 100000 | $4.78 | 1,360,777.0000 | 345,346,393 | 6.85% | 0.03% |
| June 9, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $4.20 | 1,310,777.0000 | 345,346,393 | 3.67% | 0.01% |
| June 20, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 185110 | $7.09 | 1,125,667.0000 | 345,346,393 | 14.12% | 0.05% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Stock Option (right to buy) | 250000 | $0.00 | 761,259.0000 | 366,626,500 | 24.72% | 0.07% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class B Special Shares | 10909 | $0.00 | 10,909.0000 | 366,626,500 | 9999.99% | 0.00% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class C Special Shares | 10909 | $0.00 | 10,909.0000 | 366,626,500 | 9999.99% | 0.00% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class D Special Shares | 21818 | $0.00 | 21,818.0000 | 366,626,500 | 9999.99% | 0.01% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class E Special Shares | 21818 | $0.00 | 21,818.0000 | 366,626,500 | 9999.99% | 0.01% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class F Special Shares | 21818 | $0.00 | 21,818.0000 | 366,626,500 | 9999.99% | 0.01% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class G Special Shares | 27272 | $0.00 | 27,272.0000 | 366,626,500 | 9999.99% | 0.01% |
| Aug. 26, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | M | Class H Special Shares | 27272 | $0.00 | 27,272.0000 | 366,626,500 | 9999.99% | 0.01% |
| May 21, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 164317 | $4.49 | 1,510,777.0000 | 345,346,393 | 9.81% | 0.05% |
| March 20, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 141369 | $0.00 | 1,273,308.0000 | 321,875,050 | 12.49% | 0.04% |
| March 20, 2025 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 401786 | $0.00 | 1,675,094.0000 | 321,875,050 | 31.55% | 0.12% |
| May 30, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 25000 | $1.49 | 1,181,939.0000 | 311,521,854 | 2.07% | 0.01% |
| May 31, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $1.48 | 1,131,939.0000 | 311,521,854 | 4.23% | 0.02% |
| May 29, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 25000 | $1.54 | 1,206,939.0000 | 311,521,854 | 2.03% | 0.01% |
| May 21, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $1.39 | 1,281,939.0000 | 311,521,854 | 3.75% | 0.02% |
| May 23, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 25000 | $1.48 | 1,231,939.0000 | 311,521,854 | 1.99% | 0.01% |
| May 22, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 25000 | $1.40 | 1,256,939.0000 | 311,521,854 | 1.95% | 0.01% |
| March 28, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $1.33 | 1,331,939.0000 | 288,643,700 | 3.62% | 0.02% |
| March 20, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 344828 | $0.00 | 1,381,939.0000 | 288,643,700 | 33.25% | 0.12% |
| March 20, 2024 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 139224 | $0.00 | 1,037,111.0000 | 288,643,700 | 15.51% | 0.05% |
| Nov. 27, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 50000 | $1.38 | 897,887.0000 | 294,636,496 | 5.27% | 0.02% |
| Sept. 26, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 140000 | $1.02 | 947,887.0000 | 281,323,151 | 12.87% | 0.05% |
| March 29, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 85170 | $0.72 | 1,148,547.0000 | 239,867,019 | 6.90% | 0.04% |
| March 30, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 60660 | $0.78 | 1,087,887.0000 | 239,867,019 | 5.28% | 0.03% |
| March 28, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | S | Common Shares | 97393 | $0.72 | 1,233,717.0000 | 239,867,019 | 7.32% | 0.04% |
| March 20, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 200277 | $0.00 | 1,331,110.0000 | 239,867,019 | 17.71% | 0.08% |
| March 20, 2023 | TMC the metals Co Inc. | $TMC | O'Sullivan Anthony | Chief Development Officer | A | Common Shares | 243223 | $0.00 | 1,130,833.0000 | 239,867,019 | 27.40% | 0.10% |