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Simon Irish

Chief Executive Officer and director at Terrestrial Energy.

ExecutiveDirectorPublic company
Updated Nov 9, 2026·Latest SEC filing Nov 7, 2025·Suggest an edit

About Simon Irish

Simon Irish is a chief executive officer and director at Terrestrial Energy.

Simon Irish reports to the SEC as a director or officer of 1 public company.

Simon Irish first appears on SEC filings in 2024.

Experience

This experience comes from SEC filings. The years are when the filings name Simon Irish in the role, so the role may have started earlier or lasted longer.

Terrestrial Energy Inc.
Chief Executive Officer and director
2024 – 2025 · Public company (IMSR)

Key Colleagues at Startups

The people Simon Irish works with at each company, as listed on that company's latest Form D.

Terrestrial Energy Inc. · Form D, Jul 15, 2025
BT
Brian Thrasher
Executive officer
DL
David Leblanc
Executive officer and director
WJ
DH
David Hill
Director
RJ
Robert Jones
Director
FB
Fred Buckman
Director
HM
CP

Sources

  1. SECTerrestrial Energy Inc. Form D, filed Jul 15, 2025
  2. SECForms 3, 4 and 5 filed by Simon Irish (SEC filer 2091865)