According to recent filings covering the 90 days ending January 14, 2026, the three most significant insider holders at TMC the metals are Director Andrei Karkar (61.28Mn shares), TenPercentOwner Group S.A. Allseas (55.11Mn shares), Chairman & Ceo Gerard Barron (40.99Mn shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Andrei Karkar | 61,283,822 | 03 Jun, 2025 | |
| Group S.A. Allseas | 55,113,601 | 27 May, 2025 | |
| Gerard Barron | Chairman & Ceo | 40,987,118 | 24 Mar, 2025 |
| Michael Bernard Hess | 7,737,530 | 04 Sep, 2025 | |
| Scott Honour | 6,669,000 | 10 Sep, 2021 | |
| Scott Edward Leonard | 6,669,000 | 15 Sep, 2021 | |
| Opportunities Holdings Llc Sustainable | 6,669,000 | 10 Sep, 2021 | |
| Andrew Carlyle Greig | 5,070,030 | 09 Jan, 2026 | |
| Erika Ilves | Chief Strategy Officer | 4,791,366 | 24 Sep, 2025 |
| Anthony O'Sullivan | Chief Development Officer | 2,600,777 | 02 Dec, 2025 |
| Alex Spiro | 1,750,000 | 04 Sep, 2025 | |
| Craig Shesky | Chief Financial Officer | 1,145,717 | 02 Apr, 2025 |
| Gregory Stone | Chief Ocean Scientist | 385,365 | 22 Nov, 2023 |
| Andrew Hall | 359,267 | 05 Jun, 2025 | |
| Christian Madsbjerg | 331,620 | 03 Jun, 2025 | |
| Sheila Khama | 319,754 | 03 Jun, 2025 | |
| Amelia Kinahoi Siamomua | 294,452 | 03 Jun, 2025 | |
| Christelle Gedeon | Clo & Corporate Secretary | 287,519 | 22 Feb, 2022 |
| Brendan May | 197,586 | 27 Jun, 2025 | |
| Kathleen S Mcallister | 137,543 | 18 Aug, 2023 | |
| Justin Kelly | 30,000 | 10 Sep, 2021 | |
| Isaac Barchas | 30,000 | 10 Sep, 2021 | |
| Rick Gaenzle | 30,000 | 10 Sep, 2021 | |
| Gina Stryker | 8,032 | 15 Sep, 2021 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Jan, 2026 | Andrew Carlyle Greig | Common Shares | A | 31,602 | $0.65 | 5,070,030 | D | M |
| 08 Jan, 2026 | Andrew Carlyle Greig | Common Shares | A | 578,931 | $2.60 | 5,038,428 | D | M |
| 08 Jan, 2026 | Andrew Carlyle Greig | Common Shares | A | 11,578 | $0.52 | 4,459,497 | D | M |
| 02 Dec, 2025 | Anthony O'Sullivan | - | - | 2,025,667 | D | |||
| 02 Dec, 2025 | Anthony O'Sullivan | Common Shares | D | 50,000 | $6.77 | 2,025,667 | D | S |
| 28 Nov, 2025 | Anthony O'Sullivan | - | - | 2,075,667 | D | |||
| 28 Nov, 2025 | Anthony O'Sullivan | Common Shares | D | 50,000 | $6.51 | 2,075,667 | D | S |
| 24 Sep, 2025 | Erika Ilves | - | - | 4,507,869 | D | |||
| 24 Sep, 2025 | Erika Ilves | - | - | 4,245,760 | D | |||
| 24 Sep, 2025 | Erika Ilves | - | - | 4,760,684 | D | |||
| 24 Sep, 2025 | Erika Ilves | Common Shares | A | 1,099,968 | $0.65 | 4,245,760 | D | M |
| 24 Sep, 2025 | Erika Ilves | Common Shares | A | 252,815 | $0.65 | 4,760,684 | D | M |
| 24 Sep, 2025 | Erika Ilves | Common Shares | A | 262,109 | $0.65 | 4,507,869 | D | M |
| 23 Sep, 2025 | Anthony O'Sullivan | Common Shares | A | 1,000,000 | $0.00 | 2,125,667 | D | A |
| 23 Sep, 2025 | Erika Ilves | - | - | 3,145,792 | D | |||
| 23 Sep, 2025 | Erika Ilves | Common Shares | A | 2,000,000 | $0.00 | 3,145,792 | D | A |
| 22 Sep, 2025 | Erika Ilves | - | - | 1,145,792 | D | |||
| 22 Sep, 2025 | Erika Ilves | Common Shares | D | 1,591,485 | $5.77 | 1,145,792 | D | S |
| 02 Sep, 2025 | Alex Spiro | Common Shares | A | 1,750,000 | $0.00 | 1,750,000 | D | A |
| 02 Sep, 2025 | Michael Bernard Hess | Common Shares | A | 7,500,000 | $0.00 | 7,737,530 | D | A |