Simon Irish - 28 Oct 2025 SCHEDULE 13D Report for Terrestrial Energy Inc. Common Stock

Filing Manager: Simon Irish
Reporting Manager: Simon Irish
Security: Terrestrial Energy Inc. Common Stock
Shares outstanding: 106,144,102 shares
Disclosed Ownership: 13,586,445 shares
Ownership: 13%
Form type: SCHEDULE 13D
Filing time: 04 Nov 2025, 16:34:52 UTC
Date of event: 28 Oct 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
Simon Irish	13%	13,586,445	10,572,054	3,014,391	/s/ Simon Irish	Simon Irish	0002091865