Tmc the Metals Co Inc.
A Canadian deep-sea mining company that harvests potato-sized rocks called polymetallic nodules from the ocean floor, collecting the nickel, cobalt, copper, and manganese inside them for use in batteries and electronics. It holds exploration rights in the Clarion-Clipperton Zone of the Pacific Ocean, in partnership with Pacific island nations like Nauru. Founded in 2011 as DeepGreen Metals, it became The Metals Company in 2021 after a merger with a special-purpose acquisition company. Its target nodules form over millions of years around a tiny core, like a shell fragment or volcanic ash.
Granted 4.74M
Granted 24.38M
Granted 5.66M · Sold 1.81M
Granted 770.9K
Granted 7.74M
Granted 2.28M · Sold 1.29M
Granted 2.08M · Sold 1.01M
Granted 1.75M
Bought 2.33M
Granted 211.1K · Sold 66.0K
Granted 189.4K
Granted 130.1K
Granted 12.4K · Sold 100.0K
Granted 73.5K
Granted 175.0K · Bought 25.0K · Sold 98.9K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| ERAS Capital LLC +1 co-filer10% owner, Director, 10% owner · 8 transactions | +8.6% | 61.41M | 4.74M | — | — |
| Barron GerardChairman & CEO, Director · 6 transactions | +140% | 41.80M | 24.38M | — | — |
| ILVES ErikaChief Strategy Officer · 11 transactions | +275.4% | 5.24M | 5.66M | — | 1.81M |
| Greig Andrew CarlyleDirector · 8 transactions | +17.8% | 5.11M | 770.9K | — | — |
| Hess Michael BernardDirector · 2 transactions | — | 3.57M | 7.74M | — | — |
| O'Sullivan AnthonyChief Development Officer · 22 transactions | — | 3.39M | 2.28M | — | 1.29M |
| Shesky CraigChief Financial Officer · 17 transactions | +131.8% | 1.88M | 2.08M | — | 1.01M |
| Spiro AlexDirector · 1 transaction | — | 1.75M | 1.75M | — | — |
| Allseas Group S.A. +4 co-filers10% owner · 1 transaction | — | 1.00Mas of May 2025 | — | 2.33M | — |
| Hall AndrewDirector · 7 transactions | +58.3% | 394.1K | 211.1K | — | 66.0K |
| Madsbjerg ChristianDirector · 7 transactions | +78.3% | 393.9K | 189.4K | — | — |
| Khama SheilaDirector · 5 transactions | +350.1% | 353.6K | 130.1K | — | — |
| Stone GregoryChief Ocean Scientist · 6 transactions | -20.8% | 333.3Kas of Mar 2024 | 12.4K | — | 100.0K |
| Siamomua Amelia KinahoiDirector · 2 transactions | +33.3% | 294.5Kas of May 2025 | 73.5K | — | — |
| May BrendanDirector · 9 transactions | — | 193.3K | 175.0K | 25.0K | 98.9K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -2.02M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.