Insider Tracker SEC Form 4 insider trades
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IMSR

Terrestrial Energy Inc.

Industrials Fabricated Plate Work (Boiler Shops) Market cap: $301.9M All insider activity → Quote and statistics → Sign in to watch IMSR Sign in to set a price alert
63
Insider Score Band 60–79

Research score, not a recommendation.

Total bought$112.3K3 Form 4 purchases
Distinct insiders3open-market buyers
Lead insiderIrish SimonCEO
Cluster window2026-10-09 → 2026-10-14active

Market data

Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.

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Why this score

Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.

Breadth number & diversity of participating insiders
37%
Seniority executive rank of buyers (CEO/CFO/Director)
91%
Commitment purchase size relative to company & holdings
70%
Context buying into stock weakness signals conviction
100%
Timing coordinated purchases within a tight window
99%
Routine-purchase discount × 1.00
Company-type / offering discount × 1.00
Net insider selling penalty − 0

Why are they buying?

No explanation has been generated for this cluster. The filings in the table below are the primary evidence.

Stock Price & Insider Purchase History

Daily close price with open-market insider purchases plotted over time

Loading price history…

Transactions

3 Form 4 trades · 3 insiders Sign in to download CSV
Purchases in this cluster, grouped by insider, largest first
Date Insider Role Shares Price Value Filing
2026-10-13 Irish Simon history of Irish Simon's purchases CEO 16,900 $3.01 $50.8K SEC filing for Irish Simon (opens in a new tab)
2026-10-09 BUCKMAN FREDERICK W history of BUCKMAN FREDERICK W's purchases Director 12,000 $3.28 $39.3K SEC filing for BUCKMAN FREDERICK W (opens in a new tab)
2026-10-14 Pardee Charles G history of Pardee Charles G's purchases Director 7,500 $2.95 $22.1K SEC filing for Pardee Charles G (opens in a new tab)
Total $112.3K