Terrestrial Energy Inc.
IMSRW- Exchange
- Nasdaq
- Industry
- Fabricated Plate Work (Boiler Shops)
- SEC CIK
- 0002019804
In the last 90 days, Terrestrial Energy Inc. insiders filed 3 open-market purchases and 0 sales; 24 institutions reported holding it in 13F filings for Q2 2026, worth $39.8M in total; no superinvestor holds it.
Other share classesIMSR
Key figures
- Market capClose on Nov 9, 2026
- $317.8M
- Insider buysLast 90 days, $112.3K in total
- 3
- Insider sellsOpen market, last 90 days
- 0
- 13F holdersQ2 2026, −2 vs. previous quarter
- 24
- 13F valueReported value at the end of Q2 2026
- $39.8M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- –
- No comparable prior period
- Net income, FY2025
- -$28.0M
- No comparable prior period
- Free cash flow, FY2025
- -$17.5M
- No comparable prior period
- Revenue, Q2 FY2026
- –
- No comparable prior period
Short interest
See short dataFrom FINRA, settlement date Oct 15, 2026.
- Short interest
- 3.14K
- Shares sold short
- Change
- +2.21K
- +236.5% vs. previous
- Days to cover
- 1.00
- At average daily volume
Superinvestors holding IMSRW, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding IMSRW at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Terrestrial Energy Inc. insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 15, 2026 (view filing)5:42 PM ET | Oct 14 | 1 day | Pardee Charles GDirector | PPurchase | +7.50K | $2.95 | +$22.1K | +111.0%14.3K after | |
| Oct 14, 2026 (view filing)9:15 AM ET | Oct 13 | 1 day | Irish SimonChief Executive Officer | PPurchase | +16.9K | $3.01 | +$50.8K | +0.7%2.31M after | |
| Oct 13, 2026 (view filing)11:06 AM ET | Oct 9 | 4 days | Buckman Frederick WDirector | PPurchase | +12.0K | $3.28 | +$39.3K | +179.9%18.7K after |
Top 10 13F holders, Q2 2026
See all 24 holdersThe largest institutional positions in Terrestrial Energy Inc. at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| LMR Partners LLP | 3,246,410 | $11.0M | 0.08% | −101,100−3.0% | Reduced |
| Boothbay Fund Management, LLC | 621,000 | $4.40M | 0.08% | +231,000+59.2% | Added |
| Hudson Bay Capital Management LP | 1,296,174 | $4.38M | 0.02% | −6,876−0.5% | Reduced |
| PEAK6 LLC | 1,236,146 | $4.18M | 0.10% | +50,000+4.2% | Added |
| Cantor Fitzgerald, L. P. | 1,082,851 | $3.53M | 0.07% | −2000.0% | Reduced |
| Caption Management, LLC | 865,372 | $2.92M | 0.10% | 00.0% | Unchanged |
| Aristeia Capital LLC | 840,047 | $2.80M | 0.04% | +104,654+14.2% | Added |
| Magnetar Financial LLC | 723,000 | $2.41M | 0.02% | −57,000−7.3% | Reduced |
| Morgan Stanley | 203,165 | $686.7K | 0.00% | −77,603−27.6% | Reduced |
| Linden Advisors LP | 194,560 | $647.9K | 0.00% | 00.0% | Unchanged |