SCHEDULE 13G 0002075341 XXXXXXXX LIVE Common Shares, without par value 09/16/2025 0001798562 TMC the metals Co Inc. 87261Y106 1111 WEST HASTINGS STREET 15TH FLOOR VANCOUVER A1 V6E 2J3 Rule 13d-1(c) Brumder William George X1 21992781.00 0.00 21992781.00 0.00 21992781.00 N 5.4 IN TMC the metals Co Inc. 1111 WEST HASTINGS STREET, 15TH FLOOR, VANCOUVER, BRITISH COLUMBIA, CANADA V6E 2J3 This statement on Schedule 13G is filed by William George Brumder II. c/o HoganTaylor LLP 1225 N. Broadway Ave., Ste. 200 Oklahoma City, OK 73103 United States Y As of the close of business on the date hereof, Mr. Brumder held exchange-traded warrants of the Issuer (the "Warrants") exercisable for an aggregate of 2,000,000 Common Shares, without par value (the "Common Shares"). The Warrants are exercisable at a price of $11.50 per Common Share and first became exercisable 30 days after the consummation of the combination between the Issuer and DeepGreen Metals Inc., which occurred on September 9, 2021, subject to certain conditions. The Warrants expire at 5:00 p.m. EST on September 9, 2026, or earlier upon redemption or liquidation, subject to certain conditions. As of the close of business on the date hereof, Mr. Brumder may be deemed to beneficially own 21,992,781 Common Shares, including (i) 2,000,000 Common Shares underlying the Warrants held by him and (ii) 2,492,200 Common Shares underlying certain call options exercisable within 60 days of the date hereof. The following percentage is based upon 408,392,921 Common Shares outstanding, which is the sum of (i) 406,392,921 Common Shares outstanding as of August 13, 2025, which is the total number of Common Shares outstanding as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the Securities and Exchange Commission on August 14, 2025, and (ii) 2,000,000 Common Shares underlying the Warrants held by Mr. Brumder. As of the close of business on the date hereof, Mr. Brumder may be deemed to beneficially own approximately 5.4% of the Common Shares outstanding. See Cover Pages Items 5-9. See Cover Pages Items 5-9. See Cover Pages Items 5-9. See Cover Pages Items 5-9. Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Brumder William George /s/ William George Brumder II 09/24/2025