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NASDAQ: IMSR Terrestrial Energy Inc. /DE/ 424B3

Terrestrial Energy files 424B3 for primary offering of up to 53.5M shares plus 13.7M secondary shares

Filed August 14, 2026 · ~1 min read

Key Changes

  • high

    Company offering up to 53,492,818 primary shares; proceeds go to Terrestrial Energy.

    The Offering view on EDGAR →
  • high

    Selling stockholders offering 13,723,445 secondary shares; proceeds go to those insiders, not the company.

    The Offering view on EDGAR →
  • medium

    Offering also includes 1,267,599 warrants to purchase common stock.

    The Offering view on EDGAR →

1 more material change behind this preview — plus the full narrative summary, section-by-section diffs against the prior filing, and verbatim quotes with EDGAR citations.

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Figures/quotes linked to EDGAR · Narrative written by AI · Sep 1, 2026 · How we verify