As of May 30, 2026, the three largest insider holders of IMSR are Shawn Matthews (Director, 2.75Mn shares), Shawn Matthews (Director, 533.51K shares), Jacob Loveless (Other, 25.00K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Shawn Matthews | - | 0 | 2,755,000 | 13 Nov, 2025 |
| Jacob Loveless | - | 25,000 | 0 | 30 Oct, 2025 |
| Michael J Connor | - | 25,000 | 0 | 30 Oct, 2025 |
| Andrew Scott Brenner | - | 25,000 | 0 | 30 Oct, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 12 Apr, 2026 | William F. Smith | Stock Option (Right to Buy) | A | 32,787 | $0.00 | 32,787 | D | A |
| 12 Apr, 2026 | Steven M. Millsap | Restricted Stock Units | A | 49,917 | $0.00 | 49,917 | D | A |
| 12 Apr, 2026 | Brian Patrick Thrasher | Restricted Stock Units | A | 49,917 | $0.00 | 49,917 | D | A |
| 12 Apr, 2026 | Steven M. Millsap | Restricted Stock Units | A | 49,917 | $0.00 | 49,917 | D | A |
| 12 Apr, 2026 | Brian Patrick Thrasher | Restricted Stock Units | A | 49,917 | $0.00 | 49,917 | D | A |
| 12 Apr, 2026 | William F. Smith | Stock Option (Right to Buy) | A | 32,787 | $0.00 | 32,787 | D | A |
| 12 Apr, 2026 | Brian Patrick Thrasher | Stock Option (Right to Buy) | A | 58,236 | $0.00 | 58,236 | D | A |
| 12 Apr, 2026 | Brian Patrick Thrasher | Stock Option (Right to Buy) | A | 58,236 | $0.00 | 58,236 | D | A |
| 12 Apr, 2026 | David Michael Leblanc | Stock Option (Right to Buy) | A | 32,787 | $0.00 | 32,787 | D | A |
| 18 Dec, 2025 | William D Johnson | Restricted Stock Units | A | 1,029 | $0.00 | 6,894 | D | A |
| 18 Dec, 2025 | David John Hill | Restricted Stock Units | A | 3,352 | $0.00 | 3,352 | D | A |
| 18 Dec, 2025 | Charles G Pardee | Restricted Stock Units | A | 5,027 | $0.00 | 5,027 | D | A |
| 18 Dec, 2025 | Robert Wood Jones | Restricted Stock Units | A | 5,865 | $0.00 | 5,865 | D | A |
| 18 Dec, 2025 | Shawn Matthews | Restricted Stock Units | A | 4,190 | $0.00 | 4,190 | D | A |
| 18 Dec, 2025 | William D Johnson | Restricted Stock Units | A | 5,865 | $0.00 | 5,865 | D | A |
| 18 Dec, 2025 | Frederick W Buckman | Restricted Stock Units | A | 6,703 | $0.00 | 6,703 | D | A |
| 18 Dec, 2025 | John Hugh Macdiarmid | Restricted Stock Units | A | 5,865 | $0.00 | 5,865 | D | A |
| 18 Dec, 2025 | William D Johnson | Resricted Stock Units | A | 1,720 | $0.00 | 7,585 | D | A |
| 18 Dec, 2025 | Frederick W Buckman | Resricted Stock Units | A | 1,176 | $0.00 | 7,879 | D | A |
| 18 Dec, 2025 | John Hugh Macdiarmid | Resricted Stock Units | A | 1,029 | $0.00 | 6,894 | D | A |