# EDGAR Filing Document

**Accession Number:** 0001798562
**File Stem:** 0001104659-23-029564
**Filing Date:** 2023-3
**Character Count:** 29468
**Document Hash:** ba5672be303cc5ad425d3fd3bd561f20
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-23-029564.hdr.sgml**: 20230307

**ACCESSION NUMBER**: 0001104659-23-029564

**CONFORMED SUBMISSION TYPE**: SC 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230307

**DATE AS OF CHANGE**: 20230307

**GROUP MEMBERS**: ALLSEAS INVESTMENTS S.A.

**GROUP MEMBERS**: ARGENTUM CEDIT VIRTUTI GCV

**GROUP MEMBERS**: EDWARD HEEREMA

**GROUP MEMBERS**: STICHTING ADMINISTRATIEKANTOOR AEQUA LANCE FOUNDATION

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TMC the metals Co Inc.
- **CENTRAL INDEX KEY:** 0001798562
- **STANDARD INDUSTRIAL CLASSIFICATION:** METAL MINING [1000]
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** A1
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91509
- **FILM NUMBER:** 23712809

**BUSINESS ADDRESS:**
- **STREET 1:** 595 HOWE STREET
- **STREET 2:** 10TH FLOOR
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 2T5
- **BUSINESS PHONE:** (604) 631-3115

**MAIL ADDRESS:**
- **STREET 1:** 595 HOWE STREET
- **STREET 2:** 10TH FLOOR
- **CITY:** VANCOUVER
- **STATE:** A1
- **ZIP:** V6C 2T5

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Sustainable Opportunities Acquisition Corp.
- **DATE OF NAME CHANGE:** 20200102
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Allseas Group S.A.
- **CENTRAL INDEX KEY:** 0001884066
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** V8
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SC 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** 18 ROUTE DE PRA DE PLAN
- **STREET 2:** CASE POSTALE 411
- **CITY:** CHATEL-SAINT-DENIS
- **STATE:** V8
- **ZIP:** 1618
- **BUSINESS PHONE:** 41 21 948 3500

**MAIL ADDRESS:**
- **STREET 1:** 18 ROUTE DE PRA DE PLAN
- **STREET 2:** CASE POSTALE 411
- **CITY:** CHATEL-SAINT-DENIS
- **STATE:** V8
- **ZIP:** 1618

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**SCHEDULE 13D**

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 3)\*

**TMC the metals company Inc.**

(Name of Issuer)

**TMC Common Shares without par value**

(Title of Class of Securities)

**87261Y 106**<br> (CUSIP Number)

**Cornelis Kooger**

**Route de Pra de Plan 18, Case Postale 411<br> 1618 Châtel-Saint-Denis<br> Switzerland**

**+41 21 948 3500**

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

**February 13, 2023**

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ◻.

*Note:* Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. *See* § 240.13d-7 for other parties to whom copies are to be sent.

\* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, *see* the *Notes*).

CUSIP NO. 87261Y 106

---

| | | | |
|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Group S.A.** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Group S.A.** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Group S.A.** |
| 2 | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;(a) ◻<br> &nbsp;&nbsp;&nbsp;&nbsp;(b) ⌧ |
| 3 | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY |
| 4 | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** |
| 5 | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp;◻ |
| 6 | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 7 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 8 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**45,130,268<sup>(1)</sup>** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 9 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 10 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**45,130,268<sup>(1)</sup>** |
| 11 | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** |
| 12 | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp;◻ |
| 13 | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> |
| 14 | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO** |

---

CUSIP NO. 87261Y 106

---

| | | | |
|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Investments S.A.** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Investments S.A.** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Allseas Investments S.A.** |
| 2 | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;(a) ◻<br> &nbsp;&nbsp;&nbsp;&nbsp;(b) ⌧ |
| 3 | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY |
| 4 | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** |
| 5 | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp;◻ |
| 6 | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH<br> REPORTING<br> PERSON WITH | 7 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH<br> REPORTING<br> PERSON WITH | 8 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**45,130,268<sup>(1)</sup>** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH<br> REPORTING<br> PERSON WITH | 9 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH<br> REPORTING<br> PERSON WITH | 10 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**45,130,268<sup>(1)</sup>** |
| 11 | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**45,130,268<sup>(1)</sup>** |
| 12 | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp;◻ |
| 13 | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.0**%<sup>(2)</sup> |
| 14 | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** |

---

CUSIP NO. 87261Y 106

---

| | | | |
|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Argentum Cedit Virtuti GCV** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Argentum Cedit Virtuti GCV** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Argentum Cedit Virtuti GCV** |
| 2 | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;(a) ◻<br> &nbsp;&nbsp;&nbsp;&nbsp;(b) ⌧ |
| 3 | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY |
| 4 | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** |
| 5 | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp;◻ |
| 6 | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Belgium** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Belgium** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Belgium** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH <br> REPORTING<br> PERSON WITH | 7 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH <br> REPORTING<br> PERSON WITH | 8 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH <br> REPORTING<br> PERSON WITH | 9 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY<br> EACH <br> REPORTING<br> PERSON WITH | 10 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** |
| 11 | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** |
| 12 | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp;◻ |
| 13 | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> |
| 14 | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**PN; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**PN; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**PN; HC** |

---

****<br> CUSIP NO. 87261Y 106

---

| | | | |
|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Stichting Administratiekantoor Aequa Lance Foundation** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Stichting Administratiekantoor Aequa Lance Foundation** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Stichting Administratiekantoor Aequa Lance Foundation** |
| 2 | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;(a) ◻<br> &nbsp;&nbsp;&nbsp;&nbsp;(b) ⌧ |
| 3 | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY |
| 4 | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** |
| 5 | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp;◻ |
| 6 | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**The Netherlands** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**The Netherlands** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**The Netherlands** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 7 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 8 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 9 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH <br> REPORTING<br> PERSON WITH | 10 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** |
| 11 | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** |
| 12 | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp;◻ |
| 13 | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> |
| 14 | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**CO; HC** |

---

CUSIP NO. 87261Y 106

---

| | | | |
|:---|:---|:---|:---|
| 1 | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Edward Heerema** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Edward Heerema** | &nbsp;&nbsp;&nbsp;&nbsp; NAME OF REPORTING PERSON<br>**Edward Heerema** |
| 2 | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp;CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP | &nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;(a) ◻<br> &nbsp;&nbsp;&nbsp;&nbsp;(b) ⌧ |
| 3 | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY | &nbsp;&nbsp; SEC USE ONLY |
| 4 | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** | &nbsp;&nbsp;&nbsp;&nbsp; SOURCE OF FUNDS<br>**OO** |
| 5 | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp; CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e) | &nbsp;&nbsp;◻ |
| 6 | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** | &nbsp;&nbsp;&nbsp;&nbsp; CITIZENSHIP OR PLACE OF ORGANIZATION<br>**Switzerland** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH<br> REPORTING<br> PERSON WITH | 7 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE VOTING POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH<br> REPORTING<br> PERSON WITH | 8 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED VOTING POWER<br>**46,130,268<sup>(3)</sup>** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH<br> REPORTING<br> PERSON WITH | 9 | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** | &nbsp;&nbsp;&nbsp;&nbsp; SOLE DISPOSITIVE POWER<br>**0** |
| NUMBER OF<br> SHARES<br> BENEFICIALLY<br> OWNED BY <br> EACH<br> REPORTING<br> PERSON WITH | 10 | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; SHARED DISPOSITIVE POWER<br>**46,130,268<sup>(3)</sup>** |
| 11 | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** | &nbsp;&nbsp;&nbsp;&nbsp; AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON<br>**46,130,268<sup>(3)</sup>** |
| 12 | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp; CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES | &nbsp;&nbsp;◻ |
| 13 | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> | &nbsp;&nbsp; PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)<br>&nbsp;&nbsp;&nbsp;&nbsp;**17.4**%<sup>(2)</sup> |
| 14 | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**IN; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**IN; HC** | &nbsp;&nbsp;&nbsp;&nbsp; TYPE OF REPORTING PERSON<br>**IN; HC** |

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(1) Includes (1) 33,551,648 common shares ("TMC Common Shares") of TMC the metals company Inc. (the "Issuer") held by Allseas Group S.A. and (2) 11,578,620 shares of TMC Common Shares issuable upon the exercise of a warrant issued to Allseas Group S.A. (the "Allseas Warrant").

(2) The percentage is based upon 265,532,666 shares of TMC Common Shares issued and outstanding as of November 14, 2022, as disclosed in the Issur's Quarterly Report on Form 10-Q/A filed with the Securities and Exchange Commission on November 15, 2022.

(3) Includes (i) 33,551,648 shares of TMC Common Shares held by Allseas Group S.A., (ii) 1,000,000 shares of TMC Common Shares held by Argentum Cedit Virtuti GCV and (iii) 11,578,620 shares of TMC Common Shares issuable upon the exercise of the Allseas Warrant.

**Explanatory Note**

This Amendment No. 3 to Schedule 13D (this "Amendment No. 3") is being filed jointly by (i) Allseas Group S.A. ("AGSA"), by virtue of its direct ownership of 33,551,648 shares of TMC Common Shares and 11,578,620 shares of TMC Common Shares issuable upon the exercise of the Allseas Warrant, (ii) Allseas Investments S.A. ("AISA"), by virtue of its ownership of AGSA, (iii) Argentum Cedit Virtuti GCV ("ACV"), by virtue of its direct ownership of 1,000,000 shares of TMC Common Shares and its ownership of AGSA and AISA, (iv) Stichting Administratiekantoor Aequa Lance Foundation ("Aequa Lance Foundation"), by virtue of its ownership of AGC, and (v) Edward Heerema, by virtue of his ownership of Aequa Lance Foundation (the foregoing collectively, the "Reporting Persons"), and amends and supplements the statement on Schedule 13D filed with the Securities and Exchange Commission on September 21, 2021 (the "Original Filing"), as amended by Amendment No. 1 filed on December 2, 2021 and by Amendment No. 2 filed on August 25, 2022 (as amended, the "Schedule 13D"). Information reported in the Schedule 13D remains in effect except to the extent that it is amended, restated or superseded by information contained in this Amendment No. 3. Capitalized terms used herein and not otherwise defined in this Amendment No. 3 have the meanings set forth in the Original Filing.

Item 3. <u>Source</u> <u>and Amount of Funds or Other Considerations.</u>

Item 3 of the Schedule 13D is hereby supplemented by adding the following additional information:

With the successful completion of the pilot trial of the Pilot Mining Test System ("PMTS"), as approved by the Issuer's Board of Directors on November 11, 2022 and pursuant to the Fifth Amendment to Pilot Mining Test Agreement and Third Amendment to Strategic Alliance Agreement, dated February 13, 2023, by and among DeepGreen Engineering Pte Ltd, DeepGreen Metals Inc., the Issuer and AGSA, the Allseas Warrant has vested and is exercisable for 11,578,620 shares of TMC Common Shares (as may be adjusted based on the formula described therein) and the Issuer issued 10,850,000 shares of TMC Common Shares to AGSA in lieu of any cash payment in connection with the successful completion of the PMTS.

Item 5. <u>Interest in Securities of the Issuer.</u>

Item 5 of the Schedule 13D is hereby amended and restated in its entirety as follows:

(a) The responses to Item 2 of the Schedule 13D are incorporated by reference
 herein. The following information is as of the date hereof and assumes there are 265,532,666 shares of TMC Common Shares outstanding,
 based on the information furnished by the Issuer. AGSA and AISA may be deemed to beneficially own 45,130,268 shares of
 TMC Common Shares, or approximately 17.0% of the outstanding TMC Common Shares. ACV, Aequa Lance Foundation and Mr. Heerema may be deemed
 to beneficially own 46,130,268 shares of TMC Common Shares, or approximately 17.4% of the outstanding TMC Common Shares. Except as disclosed in this Schedule
 13D, none of the Reporting Persons beneficially owns any TMC Common Shares or has the right to acquire any TMC Common Shares. Each Reporting
 Person disclaims beneficial ownership of the reported TMC Common Shares except to the extent of its or his respective pecuniary interest
 therein.

(b) Regarding the number of TMC Common
 Shares that the Reporting Persons have the sole power to vote or direct the vote, shared power to vote or direct the vote, sole power
 to dispose or direct the disposition or shared power to dispose or direct the disposition, see the cover pages to this Schedule 13D.

(c) In connection with the Business Combination, AGSA received 14,151,648 shares of TMC Common Shares. In connection with the PIPE Financing, AGSA received 2,000,000 shares of TMC Common Shares and ACV received 1,000,000 shares of TMC Common Shares. On December 24, 2021, AGSA acquired 300,000 shares of TMC Common Shares in a privately negotiated transaction. On August 18, 2022, AGSA acquired 6,250,000 shares of TMC Common Shares in a privately negotiated transaction. With the successful completion of the pilot trial of the PMTS, as approved by the Issuer's Board of Directors on November 11, 2022 and pursuant to the Fifth Amendment to Pilot Mining Test Agreement and Third Amendment to Strategic Alliance Agreement, dated February 13, 2023, by and among DeepGreen Engineering Pte Ltd, DeepGreen Metals Inc., the Issuer and AGSA, the Allseas Warrant has vested and is exercisable for 11,578,620 shares of TMC Common Shares (as may be adjusted based on the formula described therein) and the Issuer issued 10,850,000 shares of TMC Common Shares to AGSA in lieu of any cash payment in connection with the successful completion of the PMTS.

(d) Except as set forth in this Item 5, to the best knowledge of the Reporting Persons, no other person is known to have the right to receive, or the power to direct the receipt of dividends from, or proceeds from the sale of, the TMC Common Shares beneficially owned by them.

(e) Not applicable.

**<u>SIGNATURES</u>**

After reasonable inquiry and to the best of each of the undersigned's knowledge and belief, each of the undersigned certify that the information set forth in this statement is true, complete and correct.

Date: March 6, 2023

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| | |
|:---|:---|
| **Allseas Group S.A.** | **Allseas Group S.A.** |
| By: | /s/ Edward Heerema |
|  | Name: Edward Heerema |
|  | Title: President |
| **Allseas Investments S.A.** | **Allseas Investments S.A.** |
| By: | /s/ Edward Heerema |
|  | Name: Edward Heerema |
|  | Title: President |
| **Argentum Cedit Virtuti GCV** | **Argentum Cedit Virtuti GCV** |
| By: | /s/ Edward Heerema |
|  | Name: Edward Heerema |
|  | Title: Zaakvoerder |
| **Stichting Administratiekantoor Aequa Lance Foundation** | **Stichting Administratiekantoor Aequa Lance Foundation** |
| By: | /s/ Edward Heerema |
|  | Name: Edward Heerema |
|  | Title: Chairman |
| /s/ Edward Heerema | /s/ Edward Heerema |
| Name: Edward Heerema | Name: Edward Heerema |

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**<u>Schedule A</u>**

Schedule A of the Schedule 13D is hereby amended and restated in its entirety as follows:

The following table sets forth the names, business addresses and present principal occupation of each director and executive officer of the Reporting Persons.

**Allseas Group S.A.**

Unless otherwise noted, the business address for each officer or director listed below is c/o Allseas Group S.A., Route de Pra de Plan 18, 1618 Châtel-St-Denis, Switzerland.

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| | |
|:---|:---|
| **Name, Citizenship** | **Present Principal Occupation** |
| Edward Heerema, Switzerland | Administrator President |
| Cornelis Kooger, Netherlands | Director |
| Gaston Baudet, Switzerland | Administrator/Director |
| Christopher Vanhoren, Switzerland | Director |
| Luke Gillon, Switzerland | Administrator Secretary/Director |

---

**Allseas Investments S.A.**

Unless otherwise noted, the business address for each officer or director listed below is c/o Allseas Investments S.A., Route de Pra de Plan 18, 1618 Châtel-St-Denis, Switzerland.

---

| | |
|:---|:---|
| **Name, Citizenship** | **Present Principal Occupation** |
| Edward Heerema, Switzerland | Administrator President |
| Cornelis Kooger, Netherlands | Director |
| Gaston Baudet, Switzerland | Administrator/Director |
| Luke Gillon, Switzerland | Administrator Secretary/Director |

---

**Argentum Cedit Virtuti GCV**

Unless otherwise noted, the business address for each officer or director listed below is c/o Argentum Credit Virtuti GCV, Wiegstraat 21, 2000 Antwerpen, Belgium.

---

| | |
|:---|:---|
| **Name, Citizenship** | **Present Principal Occupation** |
| Edward Heerema, Switzerland | Zaakvoerder |

---

**Stichting Administratiekantoor Aequa Lance Foundation**

Unless otherwise noted, the business address for each officer or director listed below is c/o Stichting Administratiekantoor Aequa Lance Foundation, Route de Pra de Plan 18, 1618 Châtel-St-Denis, Switzerland.

---

| | |
|:---|:---|
| **Name, Citizenship** | **Present Principal Occupation** |
| Edward Heerema, Switzerland | Chairman |

---