Anthony O'Sullivan is Chief Development Officer at TMC the metals Co Inc. (TMC). They have made 11 open-market trades across 1 company since 2022, most recently 2025-12-02.
CIK 0001874198
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 11 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TMC | 2,075,667 | $4.8M |
Shares reported on the most recent Form 4, priced at the 2025-12-02 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TMC | SELL | 2025-11-28 | 2025-12-02 | $6.64 | $664K | -8.2% | -6.2% | -11.8% |
| TMC | SELL | 2025-05-27 | 2025-08-28 | $6.01 | $4.6M | -1.9% | +23.9% | +11.7% |
| TMC | SELL | 2025-05-21 | 2025-05-21 | $4.49 | $1.5M | -3.4% | +50.5% | +8.3% |
| TMC | SELL | 2024-05-29 | 2024-05-31 | $1.50 | $150K | -4.7% | -10.1% | -35.6% |
| TMC | SELL | 2024-05-21 | 2024-05-23 | $1.42 | $142K | -5.2% | -7.8% | -29.9% |
| TMC | SELL | 2024-03-28 | 2024-04-01 | $1.33 | $67K | +24.8% | +1.3% | -10.7% |
| TMC | SELL | 2023-11-27 | 2023-11-29 | $1.38 | $69K | -10.6% | -10.6% | +7.3% |
| TMC | SELL | 2023-09-26 | 2023-09-28 | $1.02 | $143K | -10.1% | -18.2% | +18.2% |
| TMC | SELL | 2023-03-28 | 2023-04-05 | $0.73 | $310K | +8.8% | -7.6% | +199.4% |
| TMC | SELL | 2022-09-30 | 2022-10-03 | $1.04 | $105K | +18.0% | -9.5% | -27.6% |
| TMC | SELL | 2022-09-19 | 2022-09-21 | $1.20 | $122K | -14.4% | -14.0% | -45.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.