| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Development Officer
1 company
Anthony O'Sullivan is Chief Development Officer at TMC. Anthony O'Sullivan's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $4.7M at current prices.
Our model assigns Anthony O'Sullivan a below-average insider score of 49/100, based on 21 past trades. Over a 12-month horizon, 25.0% of those trades were profitable, with an average 12-month return of -53.1%.
The TMC filings lean toward selling, a net 1,634,022 shares.
Anthony O'Sullivan has 17 Form 4 filings on record from September 2021 to November 2025, all as Chief Development Officer at TMC the metals (TMC), 2021–2025.
The 43 reported transactions were 21 open-market sales, 11 option or other derivative awards, 10 stock awards and 1 option exercise.
Counted by filing, the open-market trades come to no purchases and 11 sales worth about $5.6M.
The largest open-market sale was 585,110 shares of TMC at an average $5.66 on August 26, 2025, about $3.3M. Twelve months later TMC was down 7%.
None of the 8 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 2, 2025 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 100,000 | $6.64 | $664,000.00 | -4.7% | -13.8% | - | |
| Aug 26, 2025 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sale+OE | 585,110 | $5.66 | $3,313,670.34 | - | -0.6% | -6.7% | |
| May 21, 2025 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 164,317 | $4.49 | $738,259.85 | -12.7% | +7.5% | - | |
| May 31, 2024 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 100,000 | $1.50 | $149,792.50 | -11.8% | -35.2% | +204.1% | |
| May 23, 2024 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 100,000 | $1.42 | $141,850.00 | -10.6% | -28.9% | +203.9% | |
| Mar 28, 2024 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 50,000 | $1.33 | $66,740.00 | -5.0% | -2.1% | +20.3% | |
| Nov 27, 2023 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 50,000 | $1.38 | $69,000.00 | -11.5% | +4.1% | -31.0% | |
| Sep 26, 2023 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 140,000 | $1.02 | $142,128.00 | -24.3% | +13.9% | +1.0% | |
| Mar 30, 2023 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 243,223 | $0.74 | $178,921.28 | -32.2% | +97.5% | +85.8% | |
| Sep 30, 2022 | TMC Tmc The Metals Co Inc. | Chief Development Officer | Sell | 50,686 | $1.04 | $52,860.43 | -14.0% | -33.1% | -5.6% |