Terrestrial Energy Inc.

IMSR·NASDAQ·$8.27Share Price as of 11/2·$684MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/11/26 10-QQ1 ended 03/31/2605/14/26 10-KFY 202503/30/26 10-Q/AQ3 ended 09/30/2511/21/25 10-QQ3 ended 09/30/2511/14/25

Disclosures

8-KCurrent report10/27/26 8-KCurrent report08/11/26 8-KCurrent report07/31/26 8-KCurrent report07/28/26 8-KCurrent report07/21/26

Prospectuses and Registrations

424B3Prospectus08/14/26 POS AMPost-effective amendment06/05/26 S-8Registration of securities for employees05/19/26 424B3Prospectus05/14/26 424B3Prospectus05/14/26

Proxies

DEF 14ADefinitive proxy04/29/26 DEFA14AAdditional proxy materials04/29/26 DEFA14AAdditional proxy materials03/26/25

Ownership

Form 4Insider transaction10/30/26 Form 4Insider transaction10/26/26 Form 3Initial insider ownership10/21/26 Form 4Insider transaction10/21/26 Form 4Insider transaction10/15/26

Other

EFFECTRequest for effectiveness06/11/26 ARSAnnual report to shareholders04/29/26 DD03/31/26 CORRESPCorrespondence with the SEC12/23/25 EFFECTRequest for effectiveness12/23/25