Terrestrial Energy Inc. /DE/ SEC filings IMSR
Terrestrial Energy Inc. /DE/ has 186 filings in SEC EDGAR's recent list, going back to Apr 26, 2024. Its latest annual report, Form ARS, was filed on Apr 29, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 11, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Oct 27, 2026 | Oct 21, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2026 | Aug 11, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 31, 2026 | Jul 27, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 28, 2026 | Jul 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jul 21, 2026 | Jul 21, 2026 |
| 8-K |
Current report
Officer or director change
|
Jul 17, 2026 | Jul 14, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 12, 2026 | Jun 11, 2026 |
| 8-K |
Current report
Results of operations
|
May 14, 2026 | May 14, 2026 |
| 8-K |
Current report
Officer or director change
|
May 8, 2026 | May 5, 2026 |
| 8-K |
Current report
Officer or director change
|
Apr 16, 2026 | Apr 16, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 30, 2026 | Mar 30, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 29, 2026 | Jan 29, 2026 |
| 8-K |
Current report
Auditor change
|
Nov 24, 2025 | Nov 21, 2025 |
| 8-K/A | Amended current report | Nov 14, 2025 | Oct 28, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change to shareholder rights, Change in control, Officer or director change, Bylaw or fiscal year change
|
Nov 3, 2025 | Oct 28, 2025 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Oct 29, 2025 | Oct 23, 2025 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Oct 22, 2025 | Oct 22, 2025 |
| 8-K |
Current report
Other events
|
Sep 29, 2025 | Sep 29, 2025 |
| 8-K |
Current report
Restatement
|
Jul 15, 2025 | Jul 15, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure, Other events
|
Mar 26, 2025 | Mar 26, 2025 |
| 8-K |
Current report
Other events
|
Oct 10, 2024 | Oct 10, 2024 |
| 8-K |
Current report
Other events
|
Aug 23, 2024 | Aug 23, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Other events
|
Aug 20, 2024 | Aug 15, 2024 |
Showing 23 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Fabricated Plate Work (Boiler Shops) (SIC 3443)
- Listed as
- IMSR (Nasdaq), IMSRW (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Charlotte, NC
- SEC filer status
- , Emerging growth company
- SEC CIK
- 2019804
- Former names
- HCM II Acquisition Corp. (until Oct 29, 2025)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.