IMSR insider transaction filings
Terrestrial Energy Inc. /DE/ — 20 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-07-31. Screen IMSR transaction legs live →
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-07-31 | 4 | Cowan Pamela Beth — EVP, Engineering | Grant/award (A): 299,401 (derivative) @ $0 | EDGAR |
| 2026-07-27 | 4 | McCarthy Kathryn Ann — Director | Grant/award (A): 2,049 (derivative) @ $0 | EDGAR |
| 2026-04-14 | 4 | Millsap Steven M. — General Counsel | Grant/award (A): 49,917 (derivative) @ $0 | EDGAR |
| 2026-04-14 | 4 | Thrasher Brian Patrick — Chief Financial Officer | Grant/award (A): 49,917 (derivative) @ $0 · Grant/award (A): 58,236 (derivative) @ $0 | EDGAR |
| 2026-04-14 | 4 | Smith William F. — Chief Operating Officer | Grant/award (A): 32,787 (derivative) @ $0 | EDGAR |
| 2026-04-14 | 4 | LeBlanc David Michael — Chief Technology Officer, Director | Grant/award (A): 32,787 (derivative) @ $0 | EDGAR |
| 2026-01-09 | 4/A | JOHNSON WILLIAM D — Director | Grant/award (A): 1,029 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | Hill David John — Director | Grant/award (A): 3,352 (derivative) @ $0 · Grant/award (A): 588 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | MacDiarmid John Hugh — Director | Grant/award (A): 5,865 (derivative) @ $0 · Grant/award (A): 1,029 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | Matthews Shawn — Director | Grant/award (A): 4,190 (derivative) @ $0 · Grant/award (A): 735 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | Pardee Charles G — Director | Grant/award (A): 5,027 (derivative) @ $0 · Grant/award (A): 882 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | Jones Robert Wood — Director | Grant/award (A): 5,865 (derivative) @ $0 · Grant/award (A): 1,029 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | JOHNSON WILLIAM D — Director | Grant/award (A): 5,865 (derivative) @ $0 · Grant/award (A): 1,720 (derivative) @ $0 | EDGAR |
| 2025-12-22 | 4 | BUCKMAN FREDERICK W — Director | Grant/award (A): 6,703 (derivative) @ $0 · Grant/award (A): 1,176 (derivative) @ $0 | EDGAR |
| 2025-11-13 | 4 | Matthews Shawn — Director HCM Investor Holdings II, LLC | Other (J): 2,920,000 · Other (J): 3,500,000 (derivative) | EDGAR |
| 2025-10-30 | 4 | Connor Michael J | Other (J): 25,000 | EDGAR |
| 2025-10-30 | 4 | Brenner Andrew Scott | Other (J): 25,000 | EDGAR |
| 2025-10-30 | 4 | Irish Simon — Chief Executive Officer, Director | Grant/award (A): 166,298 (derivative) @ $0 | EDGAR |
| 2025-10-30 | 4 | Loveless Jacob | Other (J): 25,000 | EDGAR |
| 2025-10-30 | 4 | Matthews Shawn — Director HCM Investor Holdings II, LLC | Other (J): 5,675,000 · Other (J): 533,514 · Other (J): 4,275,000 (derivative) @ $11.50 · Other (J): 1,267,599 (derivative) @ $11.50 | EDGAR |
Recent 8-K events — Terrestrial Energy Inc. /DE/
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-08-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-31 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-07-28 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-21 | 8-K | 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-17 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-06-12 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
| 2026-05-14 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-08 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-04-16 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-03-30 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
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