IMSR insider trading — Terrestrial Energy Inc.
Over the last 90 days, insiders at Terrestrial Energy Inc. (IMSR) made 3 open-market purchases worth $112K and 0 open-market sales worth $0, making them net buyers by $112K. The largest purchase was by Irish Simon (Chief Executive Officer), who bought 16,900 shares for $51K on Oct 13, 2026. 3 different insiders bought shares in this period — a cluster buy, which many investors watch closely.
Updated Oct 16, 2026.
Recent IMSR insider transactions
Every Form 4 filed by Terrestrial Energy Inc. officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Oct 14, 2026 | Pardee Charles G | Director | P · Purchase | Direct | 7,500 | $2.95 | $22K | Form 4 |
| Oct 13, 2026 | Irish Simon | Chief Executive Officer | P · Purchase | Direct | 16,900 | $3.01 | $51K | Form 4 |
| Oct 9, 2026 | Buckman Frederick W | Director | P · Purchase | Direct | 12,000 | $3.28 | $39K | Form 4 |
IMSR insider trading FAQ
Are insiders buying IMSR stock?
Yes. In the last 90 days, Terrestrial Energy Inc. insiders made 3 open-market purchases totaling $112K, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading IMSR?
Recent buyers: Buckman Frederick W, Irish Simon, Pardee Charles G.
Where does IMSR insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
More stocks with insider activity
Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.