# Terrestrial Energy Inc.: filings

IMSR · Nasdaq · CIK 2019804 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/imsr.md) · [Financials](/companies/imsr/financials.md) · [Filings](/companies/imsr/filings.md) · [Insiders](/companies/imsr/insiders.md)

## Reports and events: 44 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 28, 8-K 22, 3 20, SCHEDULE 13G/A 13, 425 12, CORRESP 10, 424B3 8, 10-Q 7, UPLOAD 7, SC 13G 5, SCHEDULE 13G 5, EFFECT 4, S-1/A 4, S-4/A 4, 10-K 2, 10-Q/A 2, DEFA14A 2, DRS 2, POS EX 2, S-1 2, S-8 2, SCHEDULE 13D 2, 10-K/A 1, 3/A 1, 424B4 1, 4/A 1, 8-A12B 1, 8-K/A 1, ARS 1, CERT 1, D 1, DEF 14A 1, NT 10-Q 1, POS AM 1, S-4 1).

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-27 | 07:49 ET | [8-K](/filings/0002019804-26-000030.md) | 8.01 Other events | 0002019804-26-000030 |
| 2026-08-11 | 16:30 ET | [10-Q](/filings/0001104659-26-094085.md) | Quarterly report, period 2026-06-30 | 0001104659-26-094085 |
| 2026-08-11 | 08:00 ET | [8-K](/filings/0001104659-26-093776.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001104659-26-093776 |
| 2026-07-31 | 16:06 ET | [8-K](/filings/0002019804-26-000021.md) | 5.02 Departure or appointment of officers or directors | 0002019804-26-000021 |
| 2026-07-28 | 16:35 ET | [8-K](/filings/0002019804-26-000018.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0002019804-26-000018 |
| 2026-07-21 | 09:15 ET | [8-K](/filings/0002019804-26-000013.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0002019804-26-000013 |
| 2026-07-17 | 16:28 ET | [8-K](/filings/0002019804-26-000006.md) | 5.02 Departure or appointment of officers or directors | 0002019804-26-000006 |
| 2026-06-12 | 16:15 ET | [8-K](/filings/0001104659-26-073471.md) | 5.07 Shareholder vote results | 0001104659-26-073471 |
| 2026-05-14 | 16:30 ET | [10-Q](/filings/0001104659-26-061234.md) | Quarterly report, period 2026-03-31 | 0001104659-26-061234 |
| 2026-05-14 | 07:45 ET | [8-K](/filings/0001104659-26-060716.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001104659-26-060716 |
| 2026-05-08 | 16:30 ET | [8-K](/filings/0001104659-26-057977.md) | 5.02 Departure or appointment of officers or directors | 0001104659-26-057977 |
| 2026-04-29 | 17:01 ET | [DEF 14A](/filings/0001104659-26-051655.md) | Proxy statement, period 2026-06-11 | 0001104659-26-051655 |
| 2026-04-16 | 16:40 ET | [8-K](/filings/0001104659-26-044426.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-26-044426 |
| 2026-03-30 | 17:32 ET | [10-K](/filings/0001104659-26-036846.md) | Annual report, period 2025-12-31 | 0001104659-26-036846 |
| 2026-03-30 | 07:30 ET | [8-K](/filings/0001104659-26-036467.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001104659-26-036467 |
| 2026-01-29 | 12:28 ET | [8-K](/filings/0001104659-26-007880.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-007880 |
| 2025-12-22 | 11:40 ET | [S-1/A](/filings/0001104659-25-123776.md) | Registration statement, amended | 0001104659-25-123776 |
| 2025-11-26 | 21:48 ET | [S-1](/filings/0001104659-25-116127.md) | Registration statement | 0001104659-25-116127 |
| 2025-11-24 | 16:05 ET | [8-K](/filings/0001104659-25-115406.md) | 4.01 Change of auditor; 9.01 Financial statements and exhibits | 0001104659-25-115406 |
| 2025-11-21 | 20:34 ET | [10-Q/A](/filings/0001104659-25-114702.md) | Quarterly report, amended, period 2025-09-30 | 0001104659-25-114702 |
| 2025-11-14 | 16:59 ET | [10-Q](/filings/0001213900-25-111005.md) | Quarterly report, period 2025-09-30 | 0001213900-25-111005 |
| 2025-11-14 | 16:52 ET | [8-K/A](/filings/0001104659-25-112689.md) | 9.01 Financial statements and exhibits | 0001104659-25-112689 |
| 2025-11-04 | 16:35 ET | [SCHEDULE 13D](/filings/0001104659-25-106326.md) | Ownership report, active investor | 0001104659-25-106326 |
| 2025-11-04 | 16:34 ET | [SCHEDULE 13D](/filings/0001104659-25-106325.md) | Ownership report, active investor | 0001104659-25-106325 |
| 2025-11-03 | 17:28 ET | [8-K](/filings/0001213900-25-105304.md) | 1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 3.02 Unregistered sale of equity; 3.03 Change to security holders’ rights; 5.01 Change in control; 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 5.05 Item not in the standard list; 5.06 Item not in the standard list; 9.01 Financial statements and exhibits | 0001213900-25-105304 |
| 2025-10-29 | 17:24 ET | [8-K](/filings/0001213900-25-103554.md) | 3.03 Change to security holders’ rights; 5.03 Amendment to articles or bylaws; 8.01 Other events; 9.01 Financial statements and exhibits | 0001213900-25-103554 |
| 2025-10-22 | 17:18 ET | [8-K](/filings/0001213900-25-101312.md) | 5.07 Shareholder vote results; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001213900-25-101312 |
| 2025-09-29 | 17:12 ET | [8-K](/filings/0001213900-25-093191.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001213900-25-093191 |
| 2025-08-12 | 17:06 ET | [10-Q](/filings/0001213900-25-075067.md) | Quarterly report, period 2025-06-30 | 0001213900-25-075067 |
| 2025-07-17 | 08:23 ET | [10-Q/A](/filings/0001213900-25-064899.md) | Quarterly report, amended, period 2025-03-31 | 0001213900-25-064899 |
| 2025-07-17 | 08:16 ET | [10-K/A](/filings/0001213900-25-064894.md) | Annual report, amended, period 2024-12-31 | 0001213900-25-064894 |
| 2025-07-15 | 16:18 ET | [8-K](/filings/0001213900-25-064264.md) | 4.02 Non-reliance on financial statements | 0001213900-25-064264 |
| 2025-05-20 | 16:05 ET | [10-Q](/filings/0001213900-25-045957.md) | Quarterly report, period 2025-03-31 | 0001213900-25-045957 |
| 2025-03-31 | 17:19 ET | [10-K](/filings/0001213900-25-026419.md) | Annual report, period 2024-12-31 | 0001213900-25-026419 |
| 2025-03-26 | 09:26 ET | [8-K](/filings/0001013762-25-002481.md) | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001013762-25-002481 |
| 2024-11-13 | 16:38 ET | [10-Q](/filings/0001213900-24-097511.md) | Quarterly report, period 2024-09-30 | 0001213900-24-097511 |
| 2024-10-10 | 08:05 ET | [8-K](/filings/0001213900-24-086727.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001213900-24-086727 |
| 2024-09-27 | 16:15 ET | [10-Q](/filings/0001213900-24-082719.md) | Quarterly report, period 2024-06-30 | 0001213900-24-082719 |
| 2024-08-23 | 16:37 ET | [8-K](/filings/0001140361-24-038406.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001140361-24-038406 |
| 2024-08-20 | 09:08 ET | [8-K](/filings/0001140361-24-037870.md) | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 5.03 Amendment to articles or bylaws; 8.01 Other events; 9.01 Financial statements and exhibits | 0001140361-24-037870 |
| 2024-08-02 | 16:28 ET | [S-1/A](/filings/0001140361-24-035550.md) | Registration statement, amended | 0001140361-24-035550 |
| 2024-07-19 | 17:21 ET | [S-1/A](/filings/0001140361-24-033640.md) | Registration statement, amended | 0001140361-24-033640 |
| 2024-07-05 | 21:21 ET | [S-1/A](/filings/0001140361-24-032445.md) | Registration statement, amended | 0001140361-24-032445 |
| 2024-06-18 | 21:50 ET | [S-1](/filings/0001140361-24-030416.md) | Registration statement | 0001140361-24-030416 |

Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 30, 2026, 09:18 ET. No prices; not investment advice.