Terrestrial Energy Inc.
Organization details
- Legal name
- Terrestrial Energy Inc.
- Former names
- HCM II Acquisition Corp.
- Ownership
- Public
- Status
- Active
- Sector (GICS)
- Industrials
- SIC code
- 3443 — Fabricated Plate Work (Boiler Shops)
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Charlotte
- Headquarters state / province
- North Carolina
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- IMSR
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0002019804
- EIN
- 98-1785406
Board of directors
-
Andrew Scott Brenner · DirectorSince 2024
-
Charles G. Pardee · DirectorSince 2025
-
David John Hill · DirectorSince 2025
-
David Michael LeBlanc · Director · Chief Technology OfficerSince 2025
-
Frederick W. Buckman · DirectorSince 2025
-
Jacob Loveless · DirectorSince 2024
-
John Hugh MacDiarmid · DirectorSince 2025
-
Kathryn Ann McCarthy · DirectorSince 2026
-
Michael J. Connor · DirectorSince 2024
-
Robert Wood Jones · DirectorSince 2025
- Since 2024
-
Simon Irish · Director · Chief Executive OfficerSince 2025
-
Steven Bischoff · Director · CFO and DirectorSince 2024
-
William D. Johnson · DirectorSince 2025
Chief executives
Director election results
Annual meeting of June 11, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
99.5%
-
99.5%
Board connections
6 of this board's directors also sit on 8 other boards.
- via Jacob Loveless, Shawn Matthews and Steven Bischoff
- via Michael J. Connor and Shawn Matthews
- via Shawn Matthews
- via Shawn Matthews
- via Shawn Matthews
- via William D. Johnson
- via Shawn Matthews
- via Charles G. Pardee
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $39,336
- 1 purchase by 1 insider
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 28, 2026 | Simon Irish Director, Officer (Chief Executive Officer) | Option exercise | +55,432 | — | — |
| Oct 21, 2026 | Simon Irish Director, Officer (Chief Executive Officer) | Option exercise | +511,580 | — | — |
| Oct 9, 2026 | Frederick W. Buckman Director | Open-market purchase | +12,000 | $3.28 | $39,336 |
| Nov 6, 2025 | Shawn Matthews Director | Other | −2,920,000 | — | — |
| Oct 28, 2025 | Michael J. Connor Former Director | Other | +25,000 | — | — |
| Oct 28, 2025 | Andrew Scott Brenner Former Director | Other | +25,000 | — | — |
| Oct 28, 2025 | Jacob Loveless Former Director | Other | +25,000 | — | — |
| Oct 28, 2025 | Shawn Matthews Director | Other | +5,675,000 | — | — |
| Oct 28, 2025 | Shawn Matthews Director | Other | +533,514 | — | — |
Peers
Compare boardsOrganizations in the same sector, closest in location and size first.
Questions about Terrestrial Energy Inc.
Who is the CEO of Terrestrial Energy Inc.?
Simon Irish has been Terrestrial Energy Inc.'s Chief Executive Officer since October 2025.
How many directors are on Terrestrial Energy Inc.'s board?
Terrestrial Energy Inc.'s board has 14 directors: Andrew Scott Brenner, Charles G. Pardee, David John Hill, David Michael LeBlanc, Frederick W. Buckman, Jacob Loveless, John Hugh MacDiarmid, Kathryn Ann McCarthy, Michael J. Connor, Robert Wood Jones and 4 others.
Are Terrestrial Energy Inc. insiders buying or selling shares?
Over the last 12 months, Terrestrial Energy Inc. insiders bought $39,336 of shares in 1 purchase and made no open-market sales on the open market, as reported to the SEC on Forms 4 and 5.
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