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CIK 0002019804 · <br>Emerging growth company

Terrestrial Energy Inc. /DE/

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Ticker
IMSR
Exchange
Nasdaq
Industry
Fabricated Plate Work (Boiler Shops)
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
981785406
Phone
203-930-2200
Business address
2730 W. TYVOLA ROAD, SUITE 100, CHARLOTTE, NC, 28217
Former names
HCM II Acquisition Corp.

Securities

  • IMSR Common Stock Nasdaq
  • IMSRW Warrant Nasdaq
Open-market buys, last 90 days
$112,279
in 3 filings
Open-market sales, last 90 days
$0
in 0 filings

Net +$112,279. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Date Insider Transaction Shares Price Value Owned after
2026-10-28 Irish Simon Chief Executive Officer Option exercise +55,432 2,879,846
2026-10-28 Irish Simon Chief Executive Officer Option exercise · Restricted Stock Units −55,432 110,866
2026-10-21 Irish Simon Chief Executive Officer Option exercise +511,580 2,824,414
2026-10-21 Irish Simon Chief Executive Officer Option exercise · Restricted Stock Units −511,580 511,580
2026-10-19 Williams David Woodward Chief Commercial Officer Grant or award · Stock Option (Right to Buy) +152,672 152,672
2026-10-14 Pardee Charles G Director Purchase +7,500 $2.95 $22K 14,258
2026-10-13 Irish Simon Chief Executive Officer Purchase +16,900 $3.01 $51K 2,312,834
2026-10-09 BUCKMAN FREDERICK W Director Purchase +12,000 $3.28 $39K 18,669
2026-07-29 Cowan Pamela Beth EVP, Engineering Grant or award · Stock Option (Right to Buy) +299,401 299,401
2026-07-23 McCarthy Kathryn Ann Director Grant or award · Restricted Stock Units +2,049 2,049
2026-04-12 Millsap Steven M. General Counsel Grant or award · Restricted Stock Units +49,917 49,917
2026-04-12 Thrasher Brian Patrick Chief Financial Officer Grant or award · Restricted Stock Units +49,917 49,917
2026-04-12 Thrasher Brian Patrick Chief Financial Officer Grant or award · Stock Option (Right to Buy) +58,236 58,236
2026-04-12 Smith William F. Chief Operating Officer Grant or award · Stock Option (Right to Buy) +32,787 32,787
2026-04-12 LeBlanc David Michael Chief Technology Officer Grant or award · Stock Option (Right to Buy) +32,787 32,787
2025-12-18 JOHNSON WILLIAM D Director Grant or award · Restricted Stock Units +1,029 6,894
2025-12-18 Matthews Shawn Director Grant or award · Restricted Stock Units +4,190 4,190
2025-12-18 Matthews Shawn Director Grant or award · Restricted Stock Units +735 4,925
2025-12-18 BUCKMAN FREDERICK W Director Grant or award · Restricted Stock Units +6,703 6,703
2025-12-18 BUCKMAN FREDERICK W Director Grant or award · Resricted Stock Units +1,176 7,879

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