# Terrestrial Energy Inc.: insider transactions

IMSR · Nasdaq · CIK 2019804 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31

Pages: [Overview](/companies/imsr.md) · [Financials](/companies/imsr/financials.md) · [Filings](/companies/imsr/filings.md) · [Insiders](/companies/imsr/insiders.md)

## All transactions: 1

Non-derivative transactions reported on Forms 4, newest first. Codes P (purchase) and S (sale) are open-market trades. Reported price is as stated on the form, not a market price. Filter with ?type= `open-market`, `purchase`, `sale`.

| Date | Insider | Role | Transaction | Shares | Reported price | Value | Filing |
| --- | --- | --- | --- | ---: | ---: | ---: | --- |
| 2026-10-21 | [Irish Simon](/insiders/2091865.md) | Chief Executive Officer, Director, Officer | Option exercise (M) | 511,580 | $0.00 | $0 | [Form 4](/filings/0001193125-26-432264.md) |

Source: SEC EDGAR, Forms 4. Last ingested by Listed: Oct 30, 2026, 09:18 ET. No prices; not investment advice.