Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Terrestrial Energy Inc. /DE/IMSR · Entity 5288 | Director | December 18, 2025 | December 22, 2025 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Terrestrial Energy Inc. /DE/
Report date December 18, 2025 · Filed December 22, 2025
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Restricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 5,865 |
Reported balance
After 2025-12-18 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2025-12-18 · Grant · Acquired 5,865 · Balance 5,865 F1: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. |
| Resricted Stock UnitsSEC Table II · derivative / convertible security | Direct | 6,894 |
Reported balance
After 2025-12-18 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2025-12-18 · Grant · Acquired 1,029 · Balance 6,894 F1: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. |
Filing footnotes · ownership attribution and instrument terms
F1: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| December 18, 2025 Filed Dec 22, 2025 21:31 UTC | Terrestrial Energy Inc. /DE/ IMSR · Entity 5288 | GrantResricted Stock Units · Derivative | 1,029 | $0.00 | $0.00 |
DisclosureSEC source: 0000950138-25-000034 · form4.xml · derivative · entry 2 MacDiarmid John Hugh · CIK 0002092518 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,894 Underlying: Common Stock · 1,029 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. F1 · derivative.exercise_date: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. F1 · derivative.expiration_date: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. Read SEC document |
| December 18, 2025 Filed Dec 22, 2025 21:31 UTC | Terrestrial Energy Inc. /DE/ IMSR · Entity 5288 | GrantRestricted Stock Units · Derivative | 5,865 | $0.00 | $0.00 |
DisclosureSEC source: 0000950138-25-000034 · form4.xml · derivative · entry 1 MacDiarmid John Hugh · CIK 0002092518 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 5,865 Underlying: Common Stock · 5,865 shares Expires not disclosed F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. F1 · derivative.exercise_date: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. F1 · derivative.expiration_date: Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.