WILLIAM D. JOHNSON - 18 Dec 2025 Form 4 Insider Report for Terrestrial Energy Inc. /DE/ (HOND)

Role
Director
Signature
/s/ Steven M. Millsap, Attorney-in-Fact
Issuer symbol
HOND
Transactions as of
18 Dec 2025
Net transactions value
$0
Form type
4
Filing time
22 Dec 2025, 17:19:35 UTC
Previous filing
07 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
JOHNSON WILLIAM D Director 2730 W. TYVOLA ROAD, SUITE 100, CHARLOTTE /s/ Steven M. Millsap, Attorney-in-Fact 22 Dec 2025 0001183048
This filing has been restated, see here for the amended filing

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction IMSR Restricted Stock Units Award $0 +5,865 $0.000000 5,865 18 Dec 2025 Common Stock 5,865 Direct F1
transaction IMSR Resricted Stock Units Award $0 +1,720 +29% $0.000000 7,585 18 Dec 2025 Common Stock 1,720 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit represents a contingent right to acquire one share of Common Stock. So long as the Reporting Person provides continuous service to Terrestrial Energy, Inc., 100% of the restricted stock units will vest on December 31, 2026.