Reporting owner

Irish Simon

Reporting owner CIK 0002091865 · Chief Executive Officer · Director

These transactions appear in filings associated with this reporting owner. Jointly reported quantities and amounts are unallocated; they are not this owner's individual purchases or total holdings. Names and roles reflect the relevant filing, and a reporting owner may be a person or an organization.

Transaction timeline

Who reported an acquisition, and when the transaction occurred.

PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

2 dated transactions · 1 of 1 reporting owners shown. Select one owner to focus the chart.

View timeline as a table

Transaction date	Company / security	Reporting owners	Acquisition type
Oct 13, 2026	Terrestrial Energy Inc. /DE/Common Stock	Irish Simon	Purchase
Oct 28, 2025	Terrestrial Energy Inc. /DE/Restricted Stock Units	Irish Simon	Stock award

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Transactions in associated filings

Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transacted	Company	Reporting owners	Type / security	Quantity	Price / reference value	Details
Oct 14, 2026Trade: Oct 13, 2026	Terrestrial Energy Inc. /DE/IMSR · IMSRW · company listings	Irish SimonChief Executive Officer · Director	PurchaseCommon StockNon-derivative security · Code P	16,900	3.007Value: 50,818.3Currency not specified	View ↗
Oct 30, 2025Trade: Oct 28, 2025	Terrestrial Energy Inc. /DE/IMSR · IMSRW · company listings	Irish SimonChief Executive Officer · Director	Stock awardRestricted Stock UnitsDerivative security · Code A	166,298	0Value: 0Currency not specified	View ↗

2 transactions on this page. Filing date, newest first.