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Watch Insiders
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Terrestrial Energy Inc. /DE/ (IMSR) Insider Trading

In the last 90 days, 3 Terrestrial Energy Inc. /DE/ (IMSR) insiders reported 3 open-market purchases totaling $112,279 and no sales. The most recent open-market purchase was reported on Oct 14, 2026. Source: SEC Form 4 filings.

SEC-reported filing activity is provided for research purposes and is not investment advice.

90-day C-suite buyers
1
90-day purchase value
$112,279
Corporate buyers
3
Latest transaction
Oct 14, 2026

Executive filings

Open-market transaction history

Purchase and sale summaries are ordered by the latest reported transaction date.

Open-market insider purchase and sale transactions
DateInsider nameRoleTypeSharesPriceTotal value
Oct 14, 2026Charles G PardeeDirectorOpen Market Purchase7,500$2.95$22,125
Oct 13, 2026Simon IrishChief Executive OfficerOpen Market Purchase16,900$3.01$50,818
Oct 9, 2026Frederick W BuckmanDirectorOpen Market Purchase12,000$3.28$39,336

Common questions

IMSR insider trading FAQ

Are IMSR insiders buying or selling?
Over the last 90 days, IMSR insiders were net buyers, reporting $112,279 of open-market purchases and $0.00 of sales.
When was the last IMSR insider purchase?
The most recent open-market purchase of Terrestrial Energy Inc. /DE/ stock by an insider was reported on Oct 14, 2026, one of 3 purchases in the last 90 days.
Where does IMSR insider trading data come from?
Watch Insiders reads the SEC Form 4 filings that Terrestrial Energy Inc. /DE/ officers, directors, and 10% owners submit to EDGAR, and refreshes this page daily.