# EDGAR Filing Document

**Accession Number:** 0002027582
**File Stem:** 0000000000-25-009937
**Filing Date:** 2025-9
**Character Count:** 7738
**Document Hash:** 3ca068f40e1aa894ede33974bd557e20
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-009937.hdr.sgml**: 20260206

**ACCESSION NUMBER**: 0000000000-25-009937

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250912

**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Terrestrial Energy Inc.
- **CENTRAL INDEX KEY:** 0002027582
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 991587241
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 377-08067

**BUSINESS ADDRESS:**
- **STREET 1:** 9319 ROBERT D. SNYDER RD.
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28223
- **BUSINESS PHONE:** 646-687-8212

**MAIL ADDRESS:**
- **STREET 1:** 9319 ROBERT D. SNYDER RD.
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28223

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Terrestrial Energy Inc.
- **DATE OF NAME CHANGE:** 20240620
**FILED FOR**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Terrestrial Energy Inc. /DE/
- **CENTRAL INDEX KEY:** 0002019804
- **STANDARD INDUSTRIAL CLASSIFICATION:** FABRICATED PLATE WORK (BOILER SHOPS) [3443]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 981785406
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 377-08067

**BUSINESS ADDRESS:**
- **STREET 1:** 2730 W. TYVOLA ROAD, SUITE 100
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28217
- **BUSINESS PHONE:** 203-930-2200

**MAIL ADDRESS:**
- **STREET 1:** 2730 W. TYVOLA ROAD, SUITE 100
- **CITY:** CHARLOTTE
- **STATE:** NC
- **ZIP:** 28217

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** HCM II Acquisition Corp.
- **DATE OF NAME CHANGE:** 20240415
**PUBLIC REFERENCE ACCESSION NUMBER**: 0001213900-25-049574

## Text-Extract

```

                                                            September 12, 2025

Shawn Matthews
Chief Executive Officer
HCM II Acquisition Corp.
100 First Stamford Place, Suite 330
Stamford, CT 06902

Simon Irish
Chief Executive Officer
Terrestrial Energy Inc.
9319 Robert D. Snyder Rd.
Charlotte, NC 28223

       Re: HCM II Acquisition Corp.
           Amendment No. 2 to Registration Statement on Form S-4
           Filed on September 4, 2025
           File No. 333-288735
Dear Shawn Matthews and Simon Irish:

     We have reviewed your amended registration statement and have the
following
comments.

        Please respond to this letter by amending your registration statement
and providing
the requested information. If you do not believe a comment applies to your
facts and
circumstances or do not believe an amendment is appropriate, please tell us why
in your
response.

       After reviewing any amendment to your registration statement and the
information
you provide in response to this letter, we may have additional comments. Unless
we note
otherwise, any references to prior comments are to comments in our August 28,
2025 letter.

Amendment No. 2 to Registration Statement on Form S-4
Dilution, page 20

1.     We note that some of the numbers in your dilution disclosures are not
consistent with
       those disclosed elsewhere in the filing (e.g., number of shares to be
issued to
       Terrestrial Energy Stockholders; the number of Terrestrial Energy shares
outstanding
       post de-SPAC, etc.). Please revise to resolve these inconsistencies or
explain.
 September 12, 2025
Page 2

Material U.S. Federal Income Tax Considerations of the Merger to Holders of
Terrestrial
Stock and Terrestrial Energy, page 202

2.     Please revise this section to state clearly that the disclosure is the
opinion of named
       counsel. Refer to Section III.B.2 of Staff Legal Bulletin 19. The
opinion filed as
       Exhibit 8.2 assumes    the information set forth in the Registration
Statement . . . is
       true, correct and complete." This assumption appears overbroad, since it
includes the
       tax discussion being opined upon; please request counsel to revise
accordingly.
       Additionally include the date of the representation letters in the final
opinion.
Unaudited Pro Forma Condensed Combined Financial Information, page 209

3.     Your disclosure on page 308 stated that it is expected that Terrestrial
Energy or New
       Terrestrial will consider one-time additional equity awards to recognize
extraordinary
       services provided in connection with the Business Combination. Where you
provide
       pro forma information, please revise to disclose the nature and terms of
the awards to
       be granted, how you plan to account for those awards, and potential
impact on the
       post-combination company. Also, ensure that any granted awards are
appropriately
       reflected in the pro forma information.
Adjustments to Unaudited Pro Forma Condensed Combined Balance Sheet
Adjustment (F), page 216

4.     You state that adjustment (F) was recorded to give effect to the
issuance of
       97,200,530 New Terrestrial Common Shares to the existing stockholder of
Terrestrial
       Energy. However, the table disclosed on page 212 and elsewhere
throughout the filing
       appear to indicate that that 62,176,098 shares are expected to be issued
to those
       shareholders. Please revise to correct the inconsistencies.
Notes to Condensed Consolidated Financial Statements
Note 5. Stockholders' Deficit
Exchangeable Shares, page F-59

5.     Your revised disclosures in response to prior comment 8 stated that in
the event the
       Company declares dividends on its common stock, exchangeable
shareholders are
       entitled to receive the same dividends from ExchangeCo. Considering that
       ExchangeCo will be making the distribution in such event, the
exchangeable
       shareholders appear to hold the economic interest in ExchangeCo. Please
revise your
       presentation accordingly (e.g., present exchangeable shares as
non-controlling
       interests) or explain why you believe your existing presentation is
appropriate with
       references to authoritative literatures you relied upon to support your
conclusion.
Exhibits

6.     We note revisions to the exhibit index identifies Exhibits 3.2 and 3.3
as corporate
       documents of HCM II following domestication, and Exhibit 3.6 as a
document of
       Terrestrial Energy Inc. Please revise to clarify that these reflect the
corporate
       documents of the post-combination company, clearly distinguishing them
from the
       SPAC corporate documents, and ensure consistency with the table of
contents, which
       refers to New Terrestrial Energy corporate documents. Additionally
ensure that the
 September 12, 2025
Page 3

       securities of the post-combination company are clearly identified as
such in the
       exhibit index. We further note that Exhibit 3.4 does not appear to be
filed; please file
       or revise the index accordingly.
7.     We note you have filed the Form of Assignment and Assumption Agreement
as
       Exhibit 4.7. Please also file the Terrestrial Warrant and related
Warrant Agreement.
       Please contact Eiko Yaoita Pyles at 202-551-3587 or Hugh West at
202-551-3872 if
you have questions regarding comments on the financial statements and related
matters. Please contact Sarah Sidwell at 202-551-4733 or Jennifer Angelini at
202-551-3047
with any other questions.

                                                             Sincerely,

                                                             Division of
Corporation Finance
                                                             Office of
Manufacturing
cc:   Kevin Manz
      Eliot Robinson

```

### Attached PDF Documents

**Attachment 1:** `filename1`

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