Desq Long
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Cluster

IMSR-2026-10-09-f091dffa7a59

SEC FORM 4CLUSTER · 2 INSIDERS
$90,154.30

Terrestrial Energy Inc. /DE/ (IMSR)

Purchase of 28,900 shares across 2 reporting persons.

Transaction Code P · Reporting Persons 2

  • BUCKMAN FREDERICK WPurchase of 12,000 shares at $3.278 per share.$39,336.00
  • Irish Simon, Chief Executive OfficerPurchase of 16,900 shares at $3.007 per share.$50,818.30

Surfaced by rule: 2 distinct insiders, open-market purchases, 7-day window — a deterministic filter, not a recommendation.

Traded Oct 9, 2026 · Disclosed Oct 14, 2026

Source: SEC Form 4 · 0001193125-26-420002 · filed 2026-10-13 · View filing →

Source: SEC Form 4 · 0001193125-26-421089 · filed 2026-10-14 · View filing →

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Composed from the Form 4 as filed with the SEC. Share counts, prices and dates are the filing's own; the disclosure lag is counted in business days from the transaction date to the filing date. What is a Form 4?

Cite this card

Desq Long. "Terrestrial Energy Inc. /DE/ (IMSR)." Disclosed 2026-10-14. https://desqlong.com/cards/cluster-IMSR-2026-10-09-f091dffa7a59 (retrieved 2026-10-15).