Form 8-K

8-K — TMC the metals Co Inc.

Accession: 0001104659-26-068344

Filed: 2026-05-29

Period: 2026-05-28

CIK: 0001798562

SIC: 1000 (METAL MINING)

Item: Submission of Matters to a Vote of Security Holders

Documents

8-K — tm2615944d1_8k.htm (Primary)

XML — IDEA: XBRL DOCUMENT (R1.htm)

8-K — FORM 8-K

8-K (Primary)

Filename: tm2615944d1_8k.htm · Sequence: 1

false

0001798562

TMC the metals Co Inc.

00-0000000

0001798562

2026-05-28

0001798562

TMC:TMCCommonShareswithoutparvalueMember

2026-05-28

0001798562

TMC:RedeemablewarrantseachwholewarrantTMCCommonShareeachatanexercisepriceofdollar1150pershareMember

2026-05-28

iso4217:USD

xbrli:shares

iso4217:USD

xbrli:shares

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of

the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

May 28, 2026

TMC THE METALS COMPANY INC.

(Exact name of registrant as specified in its charter)

British Columbia, Canada

001-39281

Not Applicable

(State or other jurisdiction of

incorporation)

(Commission File Number)

(IRS Employer

Identification No.)

1111 West Hastings Street, 15th Floor

Vancouver, British Columbia

(Address of principal executive

offices)

V6E 2J3

(Zip Code)

Registrant’s telephone number, including

area code: (888) 458-3420

Not

applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K

filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

¨ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange on

which registered

TMC Common Shares without par value

TMC

The Nasdaq Stock Market LLC

Redeemable warrants, each whole warrant exercisable for one TMC Common Share, each at an exercise price of $11.50 per share

TMCWW

The Nasdaq Stock Market LLC

Indicate by check mark whether

the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter)

or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging

growth company ¨

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ¨

Item 5.07.

Submission of Matters to a Vote of Security Holders.

The Company’s Annual

Meeting was held on May 28, 2026 at 10:00 a.m. EDT. The actions set forth below were taken. Of the Company's 433,188,187 common

shares outstanding and eligible to vote as of the record date of April 2, 2026, a quorum of more than two shareholders representing

213,376,047 shares, or 49.3% of the eligible shares, was present or represented by proxy at the Annual Meeting. Each of the matters set

forth below is described in detail in the Company's Proxy Statement filed with the Securities and Exchange Commission (the “SEC”)

on April 17, 2026, as supplemented by Supplement No. 1 to Proxy Statement filed with the SEC on May 26, 2026 (together,

the “Proxy Statement”).

1.             Set the number of directors at ten (10).

Votes For

Votes Against

Votes Abstained

211,906,799

862,720

606,528

2.              Election

of the following directors of the Company, to serve until the Company's 2027 annual meeting of shareholders and until their respective

successors have been elected and qualified.

Votes For

Votes Withheld

Gerard Barron

212,628,887

747,160

Andrew Greig

212,631,720

744,327

Andrew Hall

212,665,078

710,969

Michael Hess

211,864,006

1,512,041

Stephen Jurvetson

212,078,697

1,297,350

Andrei Karkar

212,426,662

949,385

Sheila Khama

212,546,603

829,444

Christian Madsbjerg

211,860,954

1,515,093

Brendan May

212,403,473

972,574

Alex Spiro

211,849,489

1,526,558

3.              Appointment

of Ernst & Young LLP as the Company's independent registered public accounting firm for the 2026 fiscal year.

Votes For

Votes Withheld

212,951,132

424,915

4.              The

approval, on a non-binding advisory basis, of the compensation paid to the Company's named executive officers, as disclosed in the Company's

Proxy Statement (the “say-on-pay” vote).

Votes For

Votes Against

Votes Abstained

209,030,109

3,179,431

1,166,507

5.              The

approval, on a non-binding advisory basis, of the frequency of holding an advisory vote on the compensation of the Company's named executive

officers (the “say-on-frequency” vote).

1 Year

2 Years

3 Years

Votes Abstained

26,301,819

184,853,982

1,066,681

1,153,565

The frequency of two years received a majority

of the votes cast and, therefore, as described in the Proxy Statement is the frequency approved by the Company’s shareholders. The

results of this vote were consistent with the recommendation of the Company’s Board of Directors that the advisory vote on the compensation

of the Company’s named executive officers be held every two years. Accordingly, the Company will hold an advisory “say-on-pay”

vote every two years until the next required advisory “say-on-frequency” vote. As a result, the Company will hold its

next advisory vote on the compensation of its named executive officers at its 2028 annual meeting of shareholders.

Banks, brokerage firms and other nominees did not have discretionary authority to vote customers’ unvoted shares held by the firms

in street name on any of the proposals set forth above and, therefore, there were no broker non-votes on any of the proposals.

SIGNATURES

Pursuant to the requirements

of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto

duly authorized.

TMC THE METALS COMPANY INC.

Date: May 29, 2026

By:

/s/ Craig Shesky

Name:

Craig Shesky

Title:

Chief Financial Officer

XML — IDEA: XBRL DOCUMENT

XML

Filename: R1.htm · Sequence: 7

v3.26.1

Cover

May 28, 2026

Document Type

8-K

Amendment Flag

false

Document Period End Date

May 28, 2026

Entity File Number

001-39281

Entity Registrant Name

TMC the metals Co Inc.

Entity Central Index Key

0001798562

Entity Tax Identification Number

00-0000000

Entity Incorporation, State or Country Code

Entity Address, Address Line One

1111 West Hastings Street

Entity Address, Address Line Two

15th Floor

Entity Address, City or Town

Vancouver

Entity Address, State or Province

Entity Address, Postal Zip Code

V6E 2J3

City Area Code

888

Local Phone Number

458-3420

Written Communications

false

Soliciting Material

false

Pre-commencement Tender Offer

false

Pre-commencement Issuer Tender Offer

false

Entity Emerging Growth Company

false

T M C Common Shareswithoutparvalue [Member]

Title of 12(b) Security

TMC Common Shares without par value

Trading Symbol

TMC

Security Exchange Name

NASDAQ

Redeemablewarrantseachwholewarrant T M C Common Shareeachatanexercisepriceofdollar 1150pershare [Member]

Title of 12(b) Security

Redeemable warrants, each whole warrant exercisable for one TMC Common Share, each at an exercise price of $11.50 per share

Trading Symbol

TMCWW

Security Exchange Name

NASDAQ

- Definition

Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.

+ References

No definition available.

+ Details

Name:

dei_AmendmentFlag

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Area code of city

+ References

No definition available.

+ Details

Name:

dei_CityAreaCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.

+ References

No definition available.

+ Details

Name:

dei_DocumentPeriodEndDate

Namespace Prefix:

dei_

Data Type:

xbrli:dateItemType

Balance Type:

Period Type:

duration

- Definition

The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.

+ References

No definition available.

+ Details

Name:

dei_DocumentType

Namespace Prefix:

dei_

Data Type:

dei:submissionTypeItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 1 such as Attn, Building Name, Street Name

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine1

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Address Line 2 such as Street or Suite number

+ References

No definition available.

+ Details

Name:

dei_EntityAddressAddressLine2

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the City or Town

+ References

No definition available.

+ Details

Name:

dei_EntityAddressCityOrTown

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Code for the postal or zip code

+ References

No definition available.

+ Details

Name:

dei_EntityAddressPostalZipCode

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Name of the state or province.

+ References

No definition available.

+ Details

Name:

dei_EntityAddressStateOrProvince

Namespace Prefix:

dei_

Data Type:

dei:stateOrProvinceItemType

Balance Type:

Period Type:

duration

- Definition

A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityCentralIndexKey

Namespace Prefix:

dei_

Data Type:

dei:centralIndexKeyItemType

Balance Type:

Period Type:

duration

- Definition

Indicate if registrant meets the emerging growth company criteria.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityEmergingGrowthCompany

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.

+ References

No definition available.

+ Details

Name:

dei_EntityFileNumber

Namespace Prefix:

dei_

Data Type:

dei:fileNumberItemType

Balance Type:

Period Type:

duration

- Definition

Two-character EDGAR code representing the state or country of incorporation.

+ References

No definition available.

+ Details

Name:

dei_EntityIncorporationStateCountryCode

Namespace Prefix:

dei_

Data Type:

dei:edgarStateCountryItemType

Balance Type:

Period Type:

duration

- Definition

The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityRegistrantName

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b-2

+ Details

Name:

dei_EntityTaxIdentificationNumber

Namespace Prefix:

dei_

Data Type:

dei:employerIdItemType

Balance Type:

Period Type:

duration

- Definition

Local phone number for entity.

+ References

No definition available.

+ Details

Name:

dei_LocalPhoneNumber

Namespace Prefix:

dei_

Data Type:

xbrli:normalizedStringItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 13e

-Subsection 4c

+ Details

Name:

dei_PreCommencementIssuerTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14d

-Subsection 2b

+ Details

Name:

dei_PreCommencementTenderOffer

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Title of a 12(b) registered security.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection b

+ Details

Name:

dei_Security12bTitle

Namespace Prefix:

dei_

Data Type:

dei:securityTitleItemType

Balance Type:

Period Type:

duration

- Definition

Name of the Exchange on which a security is registered.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 12

-Subsection d1-1

+ Details

Name:

dei_SecurityExchangeName

Namespace Prefix:

dei_

Data Type:

dei:edgarExchangeCodeItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Exchange Act

-Number 240

-Section 14a

-Subsection 12

+ Details

Name:

dei_SolicitingMaterial

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Definition

Trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:

dei_TradingSymbol

Namespace Prefix:

dei_

Data Type:

dei:tradingSymbolItemType

Balance Type:

Period Type:

duration

- Definition

Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Securities Act

-Number 230

-Section 425

+ Details

Name:

dei_WrittenCommunications

Namespace Prefix:

dei_

Data Type:

xbrli:booleanItemType

Balance Type:

Period Type:

duration

- Details

Name:

us-gaap_StatementClassOfStockAxis=TMC_TMCCommonShareswithoutparvalueMember

Namespace Prefix:

Data Type:

Balance Type:

Period Type:

- Details

Name:

us-gaap_StatementClassOfStockAxis=TMC_RedeemablewarrantseachwholewarrantTMCCommonShareeachatanexercisepriceofdollar1150pershareMember

Namespace Prefix:

Data Type:

Balance Type:

Period Type: