List of insiders holdings for Terrestrial Energy Inc.:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Sella Roberto Marco 10% Owner | 2026-02-17 21:00:14 | 719,433 14,659,256 | 15,378,689 | Form 3/A |
| 2 | Matthews Shawn HCM Investor Holdings II LLC Director | 2025-11-13 19:31:34 | 533,514 7,717,599 | 8,251,113 | Form 4 |
| 3 | Irish Simon Chief Executive Officer | 2026-10-14 09:15:50 | 2,312,834 2,870,775 | 5,183,609 | Form 4 |
| 4 | Cowan Pamela Beth EVP, Engineering | 2026-07-31 17:00:03 | 299,401 0 | 299,401 | Form 4 |
| 5 | Thrasher Brian Patrick Chief Financial Officer | 2026-04-14 18:00:04 | 108,153 0 | 108,153 | Form 4 |
| 6 | LeBlanc David Michael Chief Technology Officer | 2026-04-14 18:00:02 | 38,768 13,731 | 52,499 | Form 4 |
| 7 | Loveless Jacob Former Director Director | 2025-10-30 20:32:23 | 50,000 0 | 50,000 | Form 4 |
| 8 | Connor Michael J Former Director Director | 2025-10-30 20:33:55 | 50,000 0 | 50,000 | Form 4 |
| 9 | Brenner Andrew Scott Former Director Director | 2025-10-30 20:33:06 | 50,000 0 | 50,000 | Form 4 |
| 10 | Millsap Steven M. General Counsel | 2026-04-14 18:00:06 | 49,917 0 | 49,917 | Form 4 |
| 11 | BUCKMAN FREDERICK W Director | 2026-10-13 11:06:12 | 18,669 14,930 | 33,599 | Form 4 |
| 12 | Smith William F. Chief Operating Officer | 2026-04-14 18:00:03 | 32,787 0 | 32,787 | Form 4 |
| 13 | Pardee Charles G Director | 2026-10-15 17:42:14 | 14,258 0 | 14,258 | Form 4 |
| 14 | Jones Robert Wood Director | 2025-12-22 17:04:07 | 12,759 0 | 12,759 | Form 4 |
| 15 | MacDiarmid John Hugh Director | 2025-12-22 16:31:47 | 12,759 0 | 12,759 | Form 4 |
| 16 | Matthews Shawn Director | 2025-12-22 16:30:08 | 9,115 0 | 9,115 | Form 4 |
| 17 | Hill David John Director | 2025-12-22 16:49:29 | 7,292 0 | 7,292 | Form 4 |
| 18 | JOHNSON WILLIAM D Director | 2026-01-09 16:29:35 | 6,894 0 | 6,894 | Form 4/A |
| 19 | McCarthy Kathryn Ann Director | 2026-07-27 17:00:03 | 2,049 0 | 2,049 | Form 4 |
| 20 | Bischoff Steven CFO and Director | 2024-08-15 17:31:52 | 0 0 | 0 | Form 3 |