TMC the metals Co Inc. (TMC) shareholders
TMCNasdaqMetal MiningFiscal year ends December 31
$2.31+0.01 (+0.43%)
Close on Nov 13, 2026Market cap $1.02BP/E –Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
13.4%
59M of 441M shares
Institutional holders
212
37 new, 30 sold out
Net institutional buying
-2M
In Q2 2026
Insider trades, 12 months
1 buys · 6 sales
Net sold $2.38M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Edward Heerema Joint filing with Argentum Cedit Virtuti NV (15.60%), Stichting Administratiekantoor Aequa Lance Foundation (15.60%) and 2 more | 67,502,501 | 15.60% | 13D (active) amendment | Jul 1, 2026 |
| Gerard Barron | 30,809,638 | 6.90% | 13D (active) amendment | Sep 9, 2026 |
| Korea Zinc Company, Ltd. | 26,491,557 | 7.20% | 13G (passive) | Jun 25, 2025 |
| First Manhattan Co. LLC. Joint filing with Zachary A. Wydra (6.50%), FMC Group Holdings LP (6.50%) and 1 more | 22,991,050 | 6.50% | 13D (active) | May 12, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of TMC | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| First Manhattan Co. LLC. | 15,315,924 | 3.47% | $67.85M | – | 0.17% |
| Citadel Advisors LLC | 3,275,718 | 0.74% | $14.51M | −350,183 | 0.00% |
| Millennium Management LLC | 2,935,946 | 0.67% | $13.01M | −130,232 | 0.00% |
| Anson Funds Management LP | 2,644,476 | 0.60% | $11.72M | New | 0.70% |
| Baird Financial Group, Inc. | 2,429,803 | 0.55% | $10.76M | −40,284 | 0.01% |
| Jane Street Group, LLC | 2,427,576 | 0.55% | $10.75M | −4,540,263 | 0.00% |
| Susquehanna International Group, Llp | 2,368,461 | 0.54% | $10.49M | +385,315 | 0.00% |
| Tudor Investment Corp Et Al | 1,691,752 | 0.38% | $7.49M | +61,989 | 0.01% |
| Marshall Wace, Llp | 1,572,699 | 0.36% | $6.97M | −847,247 | 0.01% |
| BlackRock, Inc. | 1,479,956 | 0.34% | $6.56M | +239,120 | 0.00% |
| Yorkville Advisors Global, LP | 1,303,900 | 0.30% | $9.31M | New | 10.80% |
| Old West Investment Management, LLC | 1,204,038 | 0.27% | $5.33M | – | 0.56% |
| State Street Corp | 1,143,002 | 0.26% | $5.06M | +156,852 | 0.00% |
| Group One Trading, L.P. | 1,055,308 | 0.24% | $4.68M | +114,824 | 0.01% |
| Hrt Financial LP | 982,280 | 0.22% | $4.35M | −21,770 | 0.00% |
| Renaissance Technologies LLC | 894,400 | 0.20% | $3.96M | +164,400 | 0.01% |
| UBS Group AG | 864,728 | 0.20% | $3.83M | −483,213 | 0.00% |
| Point72 Asset Management, L.P. | 822,415 | 0.19% | $3.64M | +660,448 | 0.00% |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 642,898 | 0.15% | $2.85M | +45,261 | 0.00% |
| Vanguard Portfolio Management LLC | 635,840 | 0.14% | $2.82M | +46,187 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 212 | 59M | 13.4% | 37 / 71 | 47 / 30 | 10M | 11M |
| Q1 2026 | 209 | 61M | 13.7% | 45 / 71 | 43 / 32 | 23M | 10M |
| Q4 2025 | 199 | 48M | 11.0% | 60 / 48 | 49 / 31 | 11M | 10M |
| Q3 2025 | 174 | 47M | 10.6% | 46 / 50 | 37 / 34 | 11M | 10M |
| Q2 2025 | 163 | 45M | 10.2% | 73 / 36 | 23 / 14 | 18M | 8M |
| Q1 2025 | 104 | 36M | 8.1% | 30 / 19 | 19 / 10 | 7M | 4M |
| Q4 2024 | 87 | 33M | 7.4% | 15 / 21 | 13 / 17 | 17M | 1M |
| Q3 2024 | 89 | 17M | 3.9% | 13 / 18 | 12 / 13 | 2M | 3M |
| Q2 2024 | 90 | 18M | 4.0% | 14 / 21 | 11 / 7 | 4M | 1M |
| Q1 2024 | 83 | 15M | 3.4% | 13 / 22 | 10 / 8 | 2M | 1M |
| Q4 2023 | 78 | 14M | 3.1% | 11 / 14 | 14 / 23 | 1M | 3M |
| Q3 2023 | 90 | 15M | 3.5% | 32 / 20 | 11 / 14 | 4M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
20 funds held TMC in Q2 2026, 91% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gerard Barron | Chairman & CEO, Director | 41,803,445 | 9.48% | Apr 15, 2026 |
| Craig Shesky | Chief Financial Officer | 2,098,476 | 0.48% | Apr 15, 2026 |
| Erika ILVES | Chief Strategy Officer | 6,324,095 | 1.43% | Apr 15, 2026 |
| Anthony O'Sullivan | Chief Development Officer | 2,746,843 | 0.62% | Dec 8, 2025 |
| Liam M. Mallon | Director | 103,165 | 0.02% | Oct 9, 2026 |
| Andrew Hall | Director | 466,993 | 0.11% | Sep 16, 2026 |
| Sheila Khama | Director | 353,598 | 0.08% | Jun 2, 2026 |
| Brendan May | Director | 193,346 | 0.04% | Jun 2, 2026 |
| Andrew Carlyle Greig | Director | 7,886,175 | 1.79% | Jun 2, 2026 |
| Christian Madsbjerg | Director | 419,308 | 0.10% | Jun 2, 2026 |
| Andrei Karkar | Director, 10% owner | 61,435,231 | 13.93% | Jun 2, 2026 |
| Alex Spiro | Director | 1,750,000 | 0.40% | Sep 4, 2025 |
| Michael Bernard Hess | Director | 3,570,863 | 0.81% | Sep 4, 2025 |
| Amelia Kinahoi Siamomua | Director | 294,452 | 0.07% | Jun 3, 2025 |
| Administratiekantoor Aequa Lance Foundation Stichting | 10% owner | 55,113,601 | 12.49% | Jul 7, 2026 |
| Cedit Virtuti NV Argentum | 10% owner | 1,000,000 | 0.23% | Jul 7, 2026 |
| Edward Heerema | 10% owner | 62,419,168 | 14.15% | Jul 7, 2026 |
| Investments S.A. Allseas | 10% owner | 52,780,268 | 11.96% | Jul 7, 2026 |
| Group S.A. Allseas | 10% owner | – | – | Jul 7, 2026 |
| Capital LLC ERAS | 10% owner | 61,413,491 | 13.92% | Jun 2, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Liam M. Mallon Director | Sep 28, 2026 | Award | +77,720 | – | – | 103,165 |
| Liam M. Mallon Director | Sep 25, 2026 | Award | +25,445 | – | – | 25,445 |
| Andrew Hall Director | Sep 11, 2026 | Award | +72,935 | – | – | 466,993 |
| Edward Heerema 10% owner | Jul 1, 2026 | Buy | +7,305,567 | – | – | 62,419,168 |
| Brendan May Director | Jun 2, 2026 | Sale | −20,768 | $6.42 | $133.33K | 193,346 |
| Sheila Khama Director | May 29, 2026 | Award | +16,528 | – | – | 353,598 |
| Sheila Khama Director | May 29, 2026 | Award | +17,316 | – | – | 337,070 |
| Andrew Carlyle Greig Director | May 29, 2026 | Award | +16,528 | – | – | 5,106,850 |
| Andrew Carlyle Greig Director | May 29, 2026 | Award | +20,292 | – | – | 5,090,322 |
| Capital LLC ERAS 10% owner | May 29, 2026 | Award | +16,528 | – | – | 459,996 |
| Capital LLC ERAS 10% owner | May 29, 2026 | Award | +17,857 | – | – | 443,468 |
| Brendan May Director | May 29, 2026 | Award | +16,528 | – | – | 214,114 |
| Christian Madsbjerg Director | May 29, 2026 | Award | +19,075 | – | – | 393,875 |
| Christian Madsbjerg Director | May 29, 2026 | Award | +16,528 | – | – | 410,403 |
| Andrew Hall Director | May 29, 2026 | Award | +16,528 | – | – | 394,058 |
| Andrew Hall Director | May 29, 2026 | Award | +18,263 | – | – | 377,530 |
| Erika ILVES Chief Strategy Officer | Apr 13, 2026 | Award | +453,515 | – | – | 5,214,199 |
| Gerard Barron Chairman & CEO, Director | Apr 13, 2026 | Award | +816,327 | – | – | 41,803,445 |
| Craig Shesky Chief Financial Officer | Apr 13, 2026 | Award | +453,515 | – | – | 1,879,356 |
| Craig Shesky Chief Financial Officer | Mar 26, 2026 | Sale | −215,492 | $4.53 | $976.18K | 1,425,841 |
| Craig Shesky Chief Financial Officer | Mar 25, 2026 | Sale | −78,186 | $4.58 | $358.09K | 1,641,333 |
| Craig Shesky Chief Financial Officer | Mar 24, 2026 | Sale | −51,941 | $4.74 | $246.20K | 1,719,519 |
| Craig Shesky Chief Financial Officer | Mar 20, 2026 | Option exercise | +187,662 | – | – | 1,396,583 |
| Craig Shesky Chief Financial Officer | Mar 20, 2026 | Option exercise | +166,502 | – | – | 1,563,085 |
| Craig Shesky Chief Financial Officer | Mar 20, 2026 | Option exercise | +208,375 | – | – | 1,771,460 |
| Craig Shesky Chief Financial Officer | Feb 10, 2026 | Option exercise | +63,204 | $0.65 | $41.08K | 1,208,921 |
| Christian Madsbjerg Director | Feb 6, 2026 | Option exercise | +31,602 | $0.65 | $20.54K | 374,800 |
| Christian Madsbjerg Director | Feb 6, 2026 | Option exercise | +11,578 | $0.52 | $6.02K | 343,198 |
| Andrei Karkar Director, 10% owner | Feb 6, 2026 | Option exercise | +31,602 | $0.65 | $20.54K | 425,611 |
| Andrei Karkar Director, 10% owner | Feb 3, 2026 | Option exercise | +63,682 | $0.52 | $33.11K | 394,009 |
| Andrew Carlyle Greig Director | Jan 8, 2026 | Option exercise | +31,602 | $0.65 | $20.54K | 5,070,030 |
| Andrew Carlyle Greig Director | Jan 8, 2026 | Option exercise | +578,931 | $2.60 | $1.51M | 5,038,428 |
| Andrew Carlyle Greig Director | Jan 8, 2026 | Option exercise | +11,578 | $0.52 | $6.02K | 4,459,497 |
| Anthony O'Sullivan Chief Development Officer | Dec 2, 2025 | Sale | −50,000 | $6.77 | $338.50K | 2,025,667 |
| Anthony O'Sullivan Chief Development Officer | Nov 28, 2025 | Sale | −50,000 | $6.51 | $325.50K | 2,075,667 |
| Erika ILVES Chief Strategy Officer | Sep 24, 2025 | Option exercise | +262,109 | $0.65 | $170.37K | 4,507,869 |
| Erika ILVES Chief Strategy Officer | Sep 24, 2025 | Option exercise | +252,815 | $0.65 | $164.33K | 4,760,684 |
| Erika ILVES Chief Strategy Officer | Sep 24, 2025 | Option exercise | +1,099,968 | $0.65 | $714.98K | 4,245,760 |
| Erika ILVES Chief Strategy Officer | Sep 23, 2025 | Award | +2,000,000 | – | – | 3,145,792 |
| Anthony O'Sullivan Chief Development Officer | Sep 23, 2025 | Award | +1,000,000 | – | – | 2,125,667 |
| Erika ILVES Chief Strategy Officer | Sep 22, 2025 | Sale | −1,591,485 | $5.77 | $9.18M | 1,145,792 |
| Michael Bernard Hess Director | Sep 2, 2025 | Award | +237,530 | – | – | 237,530 |
| Michael Bernard Hess Director | Sep 2, 2025 | Award | +7,500,000 | – | – | 7,737,530 |
| Alex Spiro Director | Sep 2, 2025 | Award | +1,750,000 | – | – | 1,750,000 |
| Anthony O'Sullivan Chief Development Officer | Aug 26, 2025 | Sale | −250,000 | $5.25 | $1.31M | 1,125,667 |
| Anthony O'Sullivan Chief Development Officer | Aug 26, 2025 | Option exercise | +250,000 | $0.65 | $162.50K | 1,375,667 |
| Brendan May Director | Jun 26, 2025 | Sale | −44,204 | $7.38 | $326.23K | 197,586 |
| Brendan May Director | Jun 25, 2025 | Sale | −25,000 | $7.80 | $195.00K | 241,790 |
| Anthony O'Sullivan Chief Development Officer | Jun 20, 2025 | Sale | −185,110 | $7.09 | $1.31M | 0 |
| Anthony O'Sullivan Chief Development Officer | Jun 9, 2025 | Sale | −50,000 | $4.20 | $210.00K | 185,110 |
| Andrew Hall Director | Jun 4, 2025 | Award | +66,508 | – | – | 359,267 |
| Christian Madsbjerg Director | May 30, 2025 | Award | +20,256 | – | – | 309,249 |
| Christian Madsbjerg Director | May 30, 2025 | Award | +22,371 | – | – | 331,620 |
| Andrew Carlyle Greig Director | May 30, 2025 | Award | +21,549 | – | – | 4,425,548 |
| Andrew Carlyle Greig Director | May 30, 2025 | Award | +22,371 | – | – | 4,447,919 |
| Sheila Khama Director | May 30, 2025 | Award | +5,890 | – | – | 297,383 |
| Sheila Khama Director | May 30, 2025 | Award | +22,371 | – | – | 319,754 |
| Capital LLC ERAS 10% owner | May 30, 2025 | Award | +18,963 | – | – | 307,956 |
| Capital LLC ERAS 10% owner | May 30, 2025 | Award | +22,371 | – | – | 330,327 |
| Brendan May Director | May 30, 2025 | Award | +22,371 | – | – | 266,790 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
12.98%
37M shares short
Days to cover
9.6
At 4M shares a day
Change since last report
+7.3%
From 35M shares
Short volume, 20 days
35.7%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of TMC the metals's stock actually held short. Settlement fails (shares not delivered on time) peaked at 604,296 shares on Aug 20, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Brendan May Officer | Jun 2, 2026 | 20,768 | $133.41K | Jun 2, 2026 | Vesting of restricted stock unit awards |
| Craig Shesky Officer | Mar 26, 2026 | 215,492 | $976.92K | Mar 26, 2026 | Vesting of restricted stock unit awards |
| Craig Shesky Officer | Mar 25, 2026 | 78,186 | $358.30K | Mar 25, 2026 | Vesting of restricted stock unit awards |
| Craig Shesky Officer | Mar 24, 2026 | 51,941 | $246.11K | Mar 24, 2026 | Vesting of restricted stock unit awards |
| Erika ILVES Officer | Sep 22, 2025 | 1,591,485 | $9.19M | Sep 22, 2025 | Vesting of restricted stock unit award |
| Anthony O'Sullivan Officer | May 21, 2025 | 164,317 | $738.26K | May 21, 2025 | Vesting of restricted stock unit award |
| Craig Shesky Officer | Apr 1, 2025 | 353,702 | $585.51K | Apr 1, 2025 | Vesting of restricted stock unit award |
| Craig Shesky Officer | Nov 27, 2024 | 47,523 | $40.19K | Nov 27, 2024 | Vesting of restricted stock unit award |
| Anthony O'Sullivan Officer | May 29, 2024 | 100,000 | $154.00K | May 29, 2024 | Vesting of restricted stock unit award |
| Anthony O'Sullivan Officer | May 21, 2024 | 100,000 | $142.00K | May 21, 2024 | Vesting of restricted stock unit award |
| Gregory Stone Officer | Mar 28, 2024 | 25,000 | $33.12K | Mar 28, 2024 | Vesting of restricted stock unit award |
| Anthony O'Sullivan Officer | Mar 28, 2024 | 50,000 | $66.74K | Mar 28, 2024 | Vesting of restricted stock unit award |
| Craig Shesky Officer | Mar 22, 2024 | 233,424 | $375.51K | Mar 22, 2024 | Vesting of restricted stock unit award |
| Gregory Stone Officer | Dec 22, 2023 | 25,000 | $27.39K | Dec 22, 2023 | Vesting of restricted stock unit award |
| Gregory Stone Officer | Dec 4, 2023 | 25,000 | $29.06K | Dec 4, 2023 | Vesting of restricted stock unit award |
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