Simon Irish
Board Member
Terrestrial Energy Inc. /DE/ (IMSR)Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.
About Simon Irish
Simon Irish is recorded as CEO and Board Member at Terrestrial Energy Inc. /DE/ (IMSR). Terrestrial Energy Inc. /DE/ reported in an 8-K filed November 3, 2025 that Simon Irish was appointed Chief Executive Officer, effective October 28, 2025. Terrestrial Energy Inc. /DE/ reported in an 8-K filed November 3, 2025 that Simon Irish was appointed director, effective October 20, 2025. Terrestrial Energy Inc. /DE/ reported in an 8-K filed November 3, 2025 that Simon Irish was appointed Chief Executive Officer. Simon Irish has spoken on 3 earnings calls across 1 company, most recently for Terrestrial Energy Inc. /DE/ on August 11, 2026.
“New Terrestrial Energy and Simon Irish entered into an employment agreement, effective as of the Closing, pursuant to which Mr. Irish is employed as the Chief Executive Officer of New Terrestrial Energy (the “Irish Employment Agreement”).”
“On October 20, 2025, Simon Irish, David LeBlanc, Frederick Buckman, Hugh MacDiarmid, David Hill, William Johnson, Charles Pardee, Shawn Matthews and Robert W. Jones were elected to serve as initial directors of Board, and divided into three (3) classes, with each class serving staggered three-year terms and until any such director's successor is duly elected and qualified, subject to such director's earlier death, disqualification, resignation, or removal.”
Summary generated from SEC filings and earnings-call records held by Equibles.
Affiliation history
Recorded current and former roles; source labels appear when available.
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Current
Start not stated–present
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Current
Start not stated–present
Company network
Recorded roles and call appearances connecting this person to public companies.
Leadership on record at Terrestrial Energy Inc. /DE/
Other people whose current roles at this company are on record from its filings.
- Brian Thrasher CFO
- William Smith COO
- David LeBlanc CTO, Board Member
- Steven Millsap General Counsel
- Charles Pardee Board Member
- David Hill Board Member
- Frederick Buckman Board Member
- Hugh MacDiarmid Board Member
- Kathryn McCarthy Board Member
- Robert Jones Board Member
Recent activity
Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.