Company: TMCWW
Filing Date: 2025-05-12
Form Type: 424B5
Source: 0001104659-25-047372
Chunk: 1

Company: TMC the metals Co Inc.
Filing Date: 2025-05-12
Form: 424B5
Chunk 1
---
        | 37,000,000 |

| (1) | The amount of the offering proceeds to us presented in this                                                                                  
 table does not include proceeds from the exercise of the Class C warrants for cash, if any, issued in this offering. The proceeds to         
 us before expenses is $3.00 per common share and accompanying Class C warrant and $37,000,000 in total. See “Plan of Distribution” beginning 
 on page S-20 of this prospectus supplement for additional information about the expenses payable in connection with this offering.           |

Neither the Securities and Exchange Commission nor any state or other securities commission has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectuses is truthful or complete. Any representation to the contrary is a criminal offense.

The securities offered by this prospectus supplement have not been qualified for distribution in Canada and may not be offered or sold in Canada.

We are an “emerging
growth company” and “smaller reporting company” under the federal securities laws and, as such, are subject to reduced
public company reporting requirements. See “Prospectus Supplement Summary—Implications of Being an Emerging Growth Company
and Smaller Reporting Company”.

Delivery of the common shares and Class C warrants offered hereby is expected to occur on or about May 22, 2025.

<div align='center'>___________________________________

The date of this prospectus supplement is May
12, 2025.

TABLE OF CONTENTS</div>

| PROSPECTUS SUPPLEMENT                                                                           | Page |
| ABOUT THIS PROSPECTUS SUPPLEMENT                                                                | S-1  |
| PROSPECTUS SUPPLEMENT SUMMARY                                                                   | S-2  |
| THE OFFERING                                                                                    | S-7  |
| RISK FACTORS                                                                                    | S-8  |
| CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS                                          | S-11 |
| NO CANADIAN PROSPECTUS QUALIFICATION                                                            | S-13 |
| CAUTIONARY STATEMENTS REGARDING THE NORI INITIAL ASSESSMENT AND TOML MINERAL RESOURCE STATEMENT | S-14 |
| USE OF PROCEEDS                                                                                 | S-16 |
| DILUTION                                                                                        | S-17 |
| DESCRIPTION OF SECURITIES WE ARE OFFERING                                                       | S-19 |
| PLAN OF DISTRIBUTION                                                                            | S-20 |
| LEGAL MATTERS                                                                                   | S-21 |
| EXPERTS                                                                                         | S-21 |
| WHERE YOU CAN