Browse the latest SEC filings and forms submitted by Terrestrial Energy Inc. /DE/ (IMSR). Access annual reports, quarterly statements, and other official disclosures.
View Insider Transactions for Terrestrial Energy Inc. /DE/ (IMSR).
Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| 424B3 | March 30, 2026 | 424B3 | View Document |
| 8-K | March 30, 2026 | 8-K | View Document |
| POS EX | March 30, 2026 | POS EX | View Document |
| POS EX | March 30, 2026 | POS EX | View Document |
| 10-K | March 30, 2026 | 10-K | View Document |
| 424B3 | March 30, 2026 | 424B3 | View Document |
| 3/A | Feb. 17, 2026 | - | View Document |
| SCHEDULE 13G/A | Feb. 17, 2026 | - | View Document |
| 8-K | Jan. 29, 2026 | 8-K | View Document |
| SCHEDULE 13G | Jan. 22, 2026 | - | View Document |
| 3 | Jan. 22, 2026 | - | View Document |
| 4/A | Jan. 9, 2026 | AMENDED STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 424B3 | Jan. 5, 2026 | 424B3 | View Document |
| S-8 | Jan. 5, 2026 | FORM S-8 | View Document |
| 424B3 | Dec. 30, 2025 | 424B3 | View Document |
| EFFECT | Dec. 23, 2025 | - | View Document |
| 4 | Dec. 22, 2025 | - | View Document |
| S-1/A | Dec. 22, 2025 | S-1/A | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| 4 | Dec. 22, 2025 | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | View Document |
| S-1 | Nov. 26, 2025 | S-1 | View Document |
| 8-K | Nov. 24, 2025 | FORM 8-K | View Document |
| 10-Q/A | Nov. 21, 2025 | FORM 10-Q/A | View Document |
| 8-K/A | Nov. 14, 2025 | FORM 8-K/A | View Document |
| 10-Q | Nov. 14, 2025 | QUARTERLY REPORT | View Document |
| 4 | Nov. 13, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13G/A | Nov. 12, 2025 | - | View Document |
| SCHEDULE 13G/A | Nov. 12, 2025 | - | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| 3 | Nov. 7, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D | Nov. 4, 2025 | - | View Document |
| SCHEDULE 13D | Nov. 4, 2025 | - | View Document |
| 8-K | Nov. 3, 2025 | CURRENT REPORT | View Document |
| 4 | Oct. 30, 2025 | - | View Document |
| 4 | Oct. 30, 2025 | - | View Document |
| 4 | Oct. 30, 2025 | - | View Document |
| 4 | Oct. 30, 2025 | - | View Document |
| 4 | Oct. 30, 2025 | - | View Document |
| 8-K | Oct. 29, 2025 | CURRENT REPORT | View Document |
| 425 | Oct. 22, 2025 | CURRENT REPORT | View Document |
| 8-K | Oct. 22, 2025 | CURRENT REPORT | View Document |
| 425 | Oct. 2, 2025 | FORM 425 | View Document |
| SCHEDULE 13G | Sept. 30, 2025 | - | View Document |
| 425 | Sept. 29, 2025 | CURRENT REPORT | View Document |
| 8-K | Sept. 29, 2025 | CURRENT REPORT | View Document |
| EFFECT | Sept. 26, 2025 | - | View Document |
| 424B3 | Sept. 26, 2025 | PROSPECTUS | View Document |
| CORRESP | Sept. 24, 2025 | - | View Document |
| S-4/A | Sept. 23, 2025 | REGISTRATION STATEMENT | View Document |
| S-4/A | Sept. 16, 2025 | REGISTRATION STATEMENT | View Document |
| CORRESP | Sept. 16, 2025 | - | View Document |
| UPLOAD | Sept. 12, 2025 | - | View Document |
| S-4/A | Sept. 4, 2025 | REGISTRATION STATEMENT | View Document |
| 425 | Sept. 4, 2025 | FORM 425 | View Document |
| CORRESP | Sept. 3, 2025 | - | View Document |
| UPLOAD | Aug. 28, 2025 | - | View Document |
| 425 | Aug. 15, 2025 | FORM 425 | View Document |
| CORRESP | Aug. 15, 2025 | - | View Document |
| S-4/A | Aug. 15, 2025 | REGISTRATION STATEMENT | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 14, 2025 | - | View Document |
| SCHEDULE 13G/A | Aug. 13, 2025 | - | View Document |
| 10-Q | Aug. 12, 2025 | QUARTERLY REPORT | View Document |
| SCHEDULE 13G/A | Aug. 8, 2025 | - | View Document |
| 425 | Aug. 6, 2025 | FORM 425 | View Document |
| SCHEDULE 13G/A | Aug. 6, 2025 | - | View Document |
| UPLOAD | July 30, 2025 | - | View Document |
| 10-K/A | July 17, 2025 | AMENDMENT NO. 1 TO FORM 10-K | View Document |
| CORRESP | July 17, 2025 | - | View Document |
| S-4 | July 17, 2025 | REGISTRATION STATEMENT | View Document |
| 10-Q/A | July 17, 2025 | AMENDMENT NO. 1 TO FORM 10-Q | View Document |
| 8-K | July 15, 2025 | CURRENT REPORT | View Document |
| UPLOAD | June 26, 2025 | - | View Document |
| 425 | June 24, 2025 | FORM 425 | View Document |
| 425 | June 24, 2025 | FORM 425 | View Document |
| SCHEDULE 13G | June 2, 2025 | - | View Document |
| DRS | May 30, 2025 | - | View Document |
| 425 | May 27, 2025 | FORM 425 | View Document |
| 10-Q | May 20, 2025 | QUARTERLY REPORT | View Document |
| NT 10-Q | May 16, 2025 | NOTIFICATION OF LATE FILING | View Document |
| SCHEDULE 13G/A | May 15, 2025 | - | View Document |
| SCHEDULE 13G/A | May 14, 2025 | - | View Document |
| 10-K | March 31, 2025 | ANNUAL REPORT | View Document |
| SCHEDULE 13G | March 31, 2025 | - | View Document |
| 425 | March 28, 2025 | FORM 425 | View Document |
| 425 | March 26, 2025 | FORM 425 | View Document |
| DEFA14A | March 26, 2025 | CURRENT REPORT | View Document |
| 425 | March 26, 2025 | CURRENT REPORT | View Document |
| 8-K | March 26, 2025 | CURRENT REPORT | View Document |
| SCHEDULE 13G/A | March 21, 2025 | - | View Document |
| SCHEDULE 13G/A | Feb. 13, 2025 | - | View Document |
| SCHEDULE 13G/A | Feb. 11, 2025 | - | View Document |
| SCHEDULE 13G | Feb. 7, 2025 | - | View Document |
| SC 13G | Nov. 14, 2024 | 13G HONDU | View Document |
| SC 13G | Nov. 14, 2024 | AQR CAPITAL MANAGEMENT LLC | View Document |
| SC 13G | Nov. 14, 2024 | - | View Document |
| 10-Q | Nov. 13, 2024 | QUARTERLY REPORT | View Document |
| SC 13G | Nov. 6, 2024 | SC 13G | View Document |
| SCHEDULE 13G | Oct. 17, 2024 | - | View Document |
| 8-K | Oct. 10, 2024 | CURRENT REPORT | View Document |
| 10-Q | Sept. 27, 2024 | QUARTERLY REPORT | View Document |
| SC 13G | Aug. 26, 2024 | SC 13G | View Document |
| 8-K | Aug. 23, 2024 | FORM 8-K | View Document |
| 4 | Aug. 20, 2024 | FORM 4 | View Document |
| 4 | Aug. 20, 2024 | FORM 4 | View Document |
| 4 | Aug. 20, 2024 | FORM 4 | View Document |
| 4 | Aug. 20, 2024 | FORM 4 | View Document |
| 8-K | Aug. 20, 2024 | FORM 8-K | View Document |
| 424B4 | Aug. 16, 2024 | 424B4 | View Document |
| EFFECT | Aug. 15, 2024 | - | View Document |
| 3 | Aug. 15, 2024 | FORM 3 | View Document |
| 3 | Aug. 15, 2024 | FORM 3 | View Document |
| 3 | Aug. 15, 2024 | FORM 3 | View Document |
| 3 | Aug. 15, 2024 | FORM 3 | View Document |
| 3 | Aug. 15, 2024 | FORM 3 | View Document |
| 8-A12B | Aug. 15, 2024 | 8-A12B | View Document |
| CERT | Aug. 15, 2024 | - | View Document |
| CORRESP | Aug. 13, 2024 | - | View Document |
| CORRESP | Aug. 13, 2024 | - | View Document |
| CORRESP | Aug. 2, 2024 | - | View Document |
| S-1/A | Aug. 2, 2024 | S-1/A | View Document |
| UPLOAD | July 31, 2024 | - | View Document |
| S-1/A | July 19, 2024 | S-1/A | View Document |
| CORRESP | July 19, 2024 | - | View Document |
| UPLOAD | July 10, 2024 | - | View Document |
| S-1/A | July 5, 2024 | S-1/A | View Document |
| S-1 | June 18, 2024 | S-1 | View Document |
| UPLOAD | May 24, 2024 | - | View Document |
| DRS | April 26, 2024 | - | View Document |