NASDAQ:IMSR

Terrestrial Energy Stock Insider Trading

*Your capital is at risk

$7.87

-0.640 (-7.52%)

At Close: Jun 22, 2026

Terrestrial Energy Stock Insider Power

Based on the 88 latest insides trades, we have calculated the insider power to be positive at 79.06. In total, the insiders bought 26.32M and sold 11.96M IMSR shares in the last 88 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 88 transactions)	79.06
● Buy	26.32M shares
● Sell	11.96M shares
95% Buy Activity Strong Positive Correlation
Buy Signal High Confidence Apr 30, 2026 Analysis Breakdown: Strongly supported by a very high Insider Power Score of 79.06. Partially supported by a positive historical correlation. Confidence increased due to high data reliability score of 100. Supported by overwhelming buy-side pressure (95% buys).

Historical Insider Trades

Date	Type	Person	Role	Amount
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Smith William F. Chief Operating Officer	C-Suite Officer	111 758 Value: $225.0K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Smith William F. Chief Operating Officer	C-Suite Officer	223 515 Value: $250.0K
Oct 28, 2025 Buy	Common Stock	Irish Simon Chief Executive Officer	CEO / President	0 Value: $0
Oct 28, 2025 Buy	Common Stock, par value $0.0001 per share ("Common Stock")	Irish Simon Chief Executive Officer	CEO / President	0 Value: $0
Oct 28, 2025 Buy	Common Stock	Irish Simon Chief Executive Officer	CEO / President	0 Value: $0
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Irish Simon Chief Executive Officer	CEO / President	24 140 Value: $48.6K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Irish Simon Chief Executive Officer	CEO / President	2 172 563 Value: $437.3K
Oct 28, 2025 Buy	Warrants (Right to Buy)	Irish Simon Chief Executive Officer	CEO / President	89 406 Value: $200.0K
Oct 28, 2025 Buy	Contingent Value Right	Irish Simon Chief Executive Officer	CEO / President	0 Value: $0
Oct 28, 2025 Buy	Common Stock, par value $0.0001 per share ("Common Stock")	Leblanc David Michael Chief Technology Officer	Officer	0 Value: $0
Oct 28, 2025 Buy	Common Stock	Leblanc David Michael Chief Technology Officer	Officer	0 Value: $0
Oct 28, 2025 Buy	Contingent Value Right	Macdiarmid John Hugh Director	Director	0 Value: $0
Oct 28, 2025 Buy	Warrants (Right to Buy)	Macdiarmid John Hugh Director	Director	78 231 Value: $175.0K
Oct 28, 2025 Buy	Exchangeable Shares	Macdiarmid John Hugh Director	Director	134 109 Value: $2.42M
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Macdiarmid John Hugh Director	Director	6 035 Value: $12.2K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Macdiarmid John Hugh Director	Director	111 758 Value: $165.0K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Macdiarmid John Hugh Director	Director	670 544 Value: $750.0K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Macdiarmid John Hugh Director	Director	447 030 Value: $1K
Oct 28, 2025 Buy	Common Stock, par value $0.0001 per share ("Common Stock")	Macdiarmid John Hugh Director	Director	0 Value: $0
Oct 28, 2025 Buy	Contingent Value Right	Pardee Charles G Director	Director	0 Value: $0
Oct 28, 2025 Buy	Warrants (Right to Buy)	Pardee Charles G Director	Director	22 352 Value: $50.0K
Oct 28, 2025 Buy	Stock Option (Right to Buy)	Pardee Charles G Director	Director	178 812 Value: $360.0K
Oct 28, 2025 Buy	Common Stock, par value $0.0001 per share ("Common Stock")	Pardee Charles G Director	Director	0 Value: $0
Oct 28, 2025 Buy	Restricted Stock Units A-Award	Irish Simon Chief Executive Officer	CEO / President	166 298 Value: $3.00M
Oct 28, 2025 Buy	Common Stock, par value $0.0001 per share J-Other	Matthews Shawn Director	Director	533 514 Value: $9.62M

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks