Sec Form 4 Filing - Shesky Craig @ TMC the metals Co Inc. - 2025-03-20

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Shesky Craig 2. Issuer Name and Ticker or Trading Symbol TMC the metals Co Inc. [ TMC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O TMC THE METALS COMPANY INC.,, 1111 WEST HASTINGS STREET, 15TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 03/20/2025 (Street) VANCOUVER, A1V6E 2J3 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Shares 03/20/2025 M 187,662 ( 1 ) A $ 0 1,087,381 ( 2 ) D Common Shares 03/20/2025 M 166,502 ( 3 ) A $ 0 1,253,883 D Common Shares 03/20/2025 A 245,536 ( 4 ) A $ 0 1,499,419 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units ( 5 ) 03/20/2025 M 187,662 ( 6 ) ( 6 ) Common Shares 187,662 $ 0 187,662 D Restricted Stock Units ( 5 ) 03/20/2025 M 166,502 ( 7 ) ( 7 ) Common Shares 166,502 $ 0 333,003 D Restricted Stock Units ( 5 ) 03/20/2025 A 625,125 ( 8 ) ( 8 ) Common Shares 625,125 $ 0 625,125 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Shesky Craig C/O TMC THE METALS COMPANY INC., 1111 WEST HASTINGS STREET, 15TH FLOOR VANCOUVER, A1V6E 2J3 Chief Financial Officer Signatures /s/ Michelle Ancosky, Attorney-In-Fact 03/24/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Consists of restricted stock units ("RSUs") that converted to common shares on a one-to-one basis. The RSUs were granted on March 20, 2023 and 1/3 vested on March 20, 2024 and 1/3 vested on March 20, 2025. The remaining RSUs will vest on March 20, 2026, subject to continued service through such date. ( 2 )This number updates information included in the Form 4 filed for the reporting person on November 27, 2024, to reflect the amount of securities beneficially owned following the reported transaction as 899,719 (as opposed to 977,844). ( 3 )Consists of RSUs that converted to common shares on a one-to-one basis. The RSUs were granted on March 20, 2024 and 1/3 vested on March 20, 2025. The remaining RSUs will vest as follows, subject to continued service through each vesting date: 1/3 of the total award on March 20, 2026 and the remaining amount on March 20, 2027. ( 4 )Represents common shares underlying RSUs granted on March 20, 2025. Each RSU represents the right to receive one common share upon vesting. The RSUs were granted and vested upon issuance as part of the Issuer's short-term incentive plan. ( 5 )Each RSU represents the right to receive one common share upon vesting. ( 6 )The RSUs were granted as part of the Issuer's long-term incentive plan and vest over a three year period as follows, subject to continued service through each vesting date: 1/3 on the first anniversary of March 20, 2023 (the "2023 Grant Date"), 1/3 on the second anniversary of the 2023 Grant Date and 1/3 on the third anniversary of the 2023 Grant Date. 2/3 of the RSUs have vested and have been settled as of the date hereof. ( 7 )The RSUs were granted as part of the Issuer's long-term incentive plan and vest over a three year period as follows, subject to continued service through each vesting date: 1/3 on the first anniversary of March 20, 2024 (the "2024 Grant Date"), 1/3 on the second anniversary of the 2024 Grant Date and 1/3 on the third anniversary of the 2024 Grant Date. 1/3 of the RSUs have vested and have been settled as of the date hereof. ( 8 )The RSUs were granted as part of the Issuer's long-term incentive plan and vest over a three year period as follows, subject to continued service through each vesting date: 1/3 on the first anniversary of March 20, 2025 (the "2025 Grant Date"), 1/3 on the second anniversary of the 2025 Grant Date and 1/3 on the third anniversary of the 2025 Grant Date.

Remarks: Exhibit 24.1 - Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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