Company profile
Terrestrial Energy Inc. /DE/ Insider Trading
IMSREvery SEC Form 4 insider trading filing for Terrestrial Energy Inc. /DE/ (IMSR) since April 2023 — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC. Why 2023?
- Exchange
- Nasdaq
- Sector
- Fabricated Plate Work (Boiler Shops)
- CIK
- 0002019804
- Filings
- 24
- Insiders
- 18
- Last filing
- 2026-07-29
Activity summary
Recent insider activity is bullish. Over the last 30 days, 1 insider purchased shares. Buying was led by Cowan Pamela Beth.
Quarterly balance
Buy and sell value by quarter, Q3 24 to Q3 26. Terrestrial Energy Inc. /DE/ insiders are net buyers across the period shown.
Bars below the rule are sales, above are purchases. Largest quarter on the chart is $1.
90 day insight
Over the last 90 days, Terrestrial Energy Inc. /DE/ insiders bought $0 across 2 transactions with no open-market sales.
- Most active insider: Cowan Pamela Beth with 1 transaction totaling $0.
Activity skews bullish — buys outpace sales.
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 29, 2026 | Cowan Pamela Beth | IMSR | Award | 299,401 | — | — |
| Jul 23, 2026 | McCarthy Kathryn Ann | IMSR | Award | 2,049 | — | — |
| Apr 12, 2026 | Thrasher Brian Patrick | IMSR | Award | 49,917 | — | — |
| Apr 12, 2026 | Smith William F. | IMSR | Award | 32,787 | — | — |
| Apr 12, 2026 | Millsap Steven M. | IMSR | Award | 49,917 | — | — |
31 more transactions hidden
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The same rows, over the API.
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-H "X-Api-Key: $KEY"Institutional Ownership
Top 13F-HR holders of Terrestrial Energy Inc. /DE/ as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →