Terrestrial Energy Inc. /DE/ (IMSR) Institutional Ownership & Insider Trading

107 institutions reported holding Terrestrial Energy Inc. /DE/ shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 3 insider trades on Form 4.

Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason

IMSRTerrestrial Energy Inc. /DE/Follow IMSR — free

Metal Fabrication · Industrials

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Market cap: 296.6M
P/E TTM: —
Dividend yield: —
52-week: —
Next earnings: 12 Nov, in 19 days

Institutions · all 13F filers

quarter to 30 Jun 2026 · filers in both quarters

107 institutions held 20.1% of the shares. Across filers that reported both quarters, shares held changed +15.8%.

Largest moves, shares (millions)

Institutional flow by quarter

net shares added or trimmed, millions · filers in both quarters

Quarter	Holders	Shares held, M	Change	Increased	New	Decreased	Closed
Jun 26	107	21	+15.8%	27	37	21	15
Mar 26	88	19	-11.0%	19	29	22	24
Dec 25	82	21	—	—	—	—	—
Sep 25	64	10	-48.1%	13	29	17	32
Jun 25	66	19	-8.4%	8	29	22	11
Mar 25	50	21	+26.7%	5	23	13	8
Dec 24	34	16	-11.5%	3	10	5	16
Sep 24	41	19	—	—	—	—	—

Terrestrial Energy Inc. /DE/ — questions

Who owns Terrestrial Energy Inc. /DE/ stock?: 107 institutions reported Terrestrial Energy Inc. /DE/ shares in 13F filings for the quarter ended 2026-06-30. The largest: VANGUARD CAPITAL MANAGEMENT LLC (3.2%), EXCHANGE TRADED CONCEPTS, LLC (2.0%), UBS Group AG (1.7%).
Are Terrestrial Energy Inc. /DE/ insiders buying or selling?: 3 insider trades on Form 4; the full list, with dates, people and plan status, is on this page.

Every figure on this page comes from Terrestrial Energy Inc. /DE/'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.

How these figures are read: methodology · EquiReason.

Important information. Figures on this page are taken from filings submitted to the U.S. Securities and Exchange Commission (SEC) and processed automatically by EquiReason. They may contain errors, omissions or delays, and EquiReason makes no representation or warranty as to their accuracy, completeness or timeliness. Always verify figures against the original filing on SEC EDGAR before relying on them.

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