Irish Simon Insider Trades & Stock Holdings

Chief Executive Officer · Terrestrial Energy Inc. /DE/ · Latest filing Oct 13, 2026

Irish Simon, Chief Executive Officer at Terrestrial Energy Inc. /DE/ has 1 Form 4 trade on file since Oct 13, 2026. Open-market activity: 1 purchase ($50.82K) and 0 sales ($0), net +$50.82K. Latest filing: acquired 16.90K shares of $IMSR on Oct 13, 2026 at $3.01.

Trades on file

1

Open-market bought

$50.82K

Open-market sold

$0

Net open-market

+$50.82K

Latest filing

Oct 13, 2026

All insider trades by Irish Simon

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Oct 13, 2026	$IMSR	Buy (Open-market buy)	16.90K	$3.01	$50.82K						Chief Executive Officer		Read

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks Irish Simon traded

• $IMSR

Frequently asked questions

Has Irish Simon been buying or selling stock?

Irish Simon has 1 open-market purchase and 0 open-market sales on file, net +$50.82K. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was Irish Simon's latest insider trade?

acquired 16.90K shares of $IMSR on Oct 13, 2026 at $3.01.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.