Irish Simon
SEC insider (Form 3/4/5 filer). CIK 0002091865. Chief Executive Officer at Terrestrial Energy Inc. /DE/ (IMSR). 3 reported Form 4/5 transactions since Sep 2024; latest on Oct 21, 2026. Located in CHARLOTTE, NC.
Companies Irish Simon has filed insider reports for
- Terrestrial Energy Inc. /DE/ (IMSR): Director, Officer, Chief Executive Officer
Irish Simon
CIK: 0002091865
Transaction Breakdown
Open Market Buys (P)1 (33.3%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)1 (33.3%)
Derivative conversions
Awards (A)1 (33.3%)
Compensation grants
Other (G, F, J, C, D, …)0 (0.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
IMSR
Terrestrial Energy Inc. /DE/
DirectorOfficer
Discretionary Trading P&L
Holdings
Transaction History (3 total)
- Oct 21, 2026IMSR
Terrestrial Energy Inc. /DE/
ExerciseDirect511.6K shares- - Oct 13, 2026IMSR
Terrestrial Energy Inc. /DE/
PurchaseDirect16.9K shares at avg. $3.01$51K - Oct 28, 2025IMSR
Terrestrial Energy Inc. /DE/
AwardDirectRestricted Stock Units
166.3K shares-
1-3 of 3 transactions