TMC the metals TMC Insider Ownership

Updated Oct 10, 2026

Over the trailing 12 months, TMC insiders bought 7.31Mn shares on the open market with no usable reported price, and sold $2.38 million of stock on the open market (466.39K shares).

• By number of insiders, TMC the metals saw one insider buy and 3 insiders sell on the open market over the past 12 months.
• Craig Shesky (Chief Financial Officer) led open-market sales of TMC the metals stock over the past 12 months with $1.58 million (345.62K shares), most recently on March 26, 2026.
• Allseas Group S.A. (10% owner) made the most recent open-market trade by an insider of TMC the metals, a purchase of 7.31Mn shares on July 1, 2026.
• Apart from open-market trades, TMC insiders received 1.56Mn shares in stock awards and acquired 1.35Mn shares through option exercises and conversions in the past 12 months.
• Per Business Quant, TMC insiders together hold 191.59Mn shares based on their latest Form 4 filings, or 44.22% of the 433.24Mn shares outstanding; that total is up 4.06% from 184.11Mn shares at the end of Q2 2026 and up 5.39% from 181.79Mn shares at the end of Q3 2025.
• By type of ownership, TMC insiders hold 67.97% of their shares directly (130.22Mn shares) and 32.03% indirectly (61.37Mn shares).
• Holdings in TMC the metals stock are reported by 15 insiders, the officers, directors and 10% owners who have filed a Form 4 in the past two years.
• TMC the metals' top three insider holders by shares held are Allseas Group S.A. (10% owner, 62.42Mn shares), Andrei Karkar (Director and 10% owner, 61.41Mn shares) and Gerard Barron (Chairman & CEO, 41.8Mn shares).
• The largest insider, Allseas Group S.A., holds 32.58% of TMC's insider total.
• Institutional investors owned 13.34% of TMC shares as of Q2 2026, per their 13F filings.
• In the past year, 12 insiders of TMC the metals submitted 20 Form 4 filings reporting trades, awards or other transactions.
• This summary of TMC the metals insider activity covers Form 4 filings through October 9, 2026.