Liam M. Mallon - 25 Sep 2026 Form 4 Insider Report for TMC the metals Co Inc. (TMC)

Reporting relationship: Director
Issuer ticker: TMC
Reported as of: 25 Sep 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 09 Oct 2026, 18:30:06 UTC
Prior SEC filing: 09 Oct 2026
Source filing: View source filing
Reporting owner signature: /s/ Michelle Ancosky, Attorney-in-Fact

Filing notes and source

Key filing fact

Liam M. Mallon filed Form 4 for TMC the metals Co Inc. (TMC) on 09 Oct 2026.

Key facts

This page summarizes Liam M. Mallon's Form 4 filing for TMC the metals Co Inc. (TMC).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 09 Oct 2026, 18:30.

Change

Previous filing in this sequence was filed on 09 Oct 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001692881 Primary reporting owner

Mallon Liam M

Relationship: Director
Address: C/O TMC THE METALS COMPANY INC., 1111 WEST HASTINGS STREET, 15TH FLOOR, VANCOUVER, BRITISH COLUMBIA, CANADA
Signature: /s/ Michelle Ancosky, Attorney-in-Fact
Signature date: 09 Oct 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TMC transaction

Common Shares

Award

Transaction value
Shares: +25,445
Change %
Price: $0.000000^*
Shares after: 25,445
Date: 25 Sep 2026
Ownership: Direct
Footnotes: F1

TMC transaction

Common Shares

Award

Transaction value
Shares: +77,720
Change %: +305%
Price: $0.000000^*
Shares after: 103,165
Date: 28 Sep 2026
Ownership: Direct
Footnotes: F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Pursuant to the Issuer's Nonemployee Director Compensation Policy, the Reporting Person was granted restricted stock units ("RSUs") under the Issuer's 2021 Incentive Equity Plan (the "Plan"), which will vest, subject to continued service through each vesting date, over a three-year period as follows: 1/3 on the first anniversary of September 25, 2026 (the "Initial Grant Date"), 1/3 on the second anniversary of the Initial Grant Date and 1/3 on the third anniversary of the Initial Grant Date. Each RSU represents the right to receive one common share upon vesting.

Footnote F2

The Reporting Person was granted RSUs under the Plan, which will vest, subject to continued service through each vesting date, over a three-year period as follows: 1/3 on the first anniversary of September 28, 2026 (the "Special Grant Date"), 1/3 on the second anniversary of the Special Grant Date and 1/3 on the third anniversary of the Special Grant Date.