Terrestrial Energy Inc.

NasdaqGS:IMSR Stock Report

Market Cap: US$876.1m

Terrestrial Energy Management

Management criteria checks 1/4

Terrestrial Energy's CEO is Simon Irish, appointed in Oct 2025, has a tenure of less than a year. total yearly compensation is $13.08M, comprised of 1.3% salary and 98.7% bonuses, including company stock and options. directly owns 2.22% of the company’s shares, worth $19.42M. The average tenure of the management team and the board of directors is 0.8 years and 9.3 years respectively.

Key information

Simon Irish

Chief executive officer

US$13.1m

Total compensation

CEO salary percentage1.30%
CEO tenureless than a year
CEO ownership2.2%
Management average tenureless than a year
Board average tenure9.3yrs

Recent management updates

Recent updates

Seeking Alpha • Apr 07

Terrestrial Energy: De-Risking The Path To Criticality

Summary Terrestrial Energy (IMSR) remains rated Neutral, with a $7 FY 2026 price target projecting 11% upside, reflecting improved but still moderate-to-high risk. IMSR's progress on DOE-backed TETRA and TEFLA projects, plus 1–3 potential new commercial leads in 2026, are key catalysts for re-rating. With $298 million in cash and no revenue yet, IMSR's liquidity runway exceeds nine years, supporting ongoing R&D and project execution. Downside risk persists if IMSR misses critical milestones, but recent de-risking and pipeline expansion have reduced the bear-case probability to 30%. Read the full article on Seeking Alpha

CEO Compensation Analysis

How has Simon Irish's remuneration changed compared to Terrestrial Energy's earnings?
DateTotal CompensationSalaryCompany Earnings
Mar 31 2026n/an/a

-US$32m

Dec 31 2025US$13mUS$169k

-US$28m

Sep 30 2025n/an/a

-US$24m

Jun 30 2025n/an/a

-US$17m

Mar 31 2025n/an/a

-US$14m

Dec 31 2024US$241kUS$43k

-US$11m

Dec 31 2023US$317kUS$35k

-US$14m

Compensation vs Market: Simon's total compensation ($USD13.08M) is above average for companies of similar size in the US market ($USD3.70M).

Compensation vs Earnings: Simon's compensation has increased whilst the company is unprofitable.

CEO

Simon Irish (56 yo)

less than a year
Tenure
US$13,081,346
Compensation

Mr. Simon Irish co-founded Terrestrial Energy Inc. in 2012. He serves as CEO at Terrestrial Energy Inc. since October 20, 2025 and is its Director since 2014. He has been Chief Executive Officer and Direct...

Leadership Team

NamePositionTenureCompensationOwnership
Simon Irish
CEO & Directorless than a yearUS$13.08m2.22%
$ 19.4m
Brian Thrasher
Chief Financial Officer1yrUS$1.57m0%
$ 0
Steven Millsap
Chief Compliance Officerless than a yearUS$1.68mno data
William Smith
Chief Operating Officerless than a yearUS$177.30k0%
$ 0
David LeBlanc
CTO & Directorless than a yearUS$146.33k10.57%
$ 92.6m
Tyler Gronbach
Vice President of Investor Relations & Public Relationsno datano datano data
0.8yrs
Average Tenure
56yo
Average Age

Experienced Management: IMSR's management team is not considered experienced ( 0.8 years average tenure), which suggests a new team.

Board Members

NamePositionTenureCompensationOwnership
Simon Irish
CEO & Director12.3yrsUS$13.08m2.22%
$ 19.4m
David LeBlanc
CTO & Director13.3yrsUS$146.33k10.57%
$ 92.6m
William Johnson
Independent Non-Employee Director3.3yrsUS$59.10k0%
$ 0
Frederick Buckman
Independent Non-Employee Chairman9.3yrsUS$217.54k0.020%
$ 178.6k
J. MacDiarmid
Independent Non-Employee Director12.3yrsUS$95.44k0.68%
$ 5.9m
Robert Jones
Independent Non-Employee Director1yrUS$409.10k0%
$ 0
Charles Pardee
Independent Non-Employee Director2.3yrsUS$50.66k0.0064%
$ 55.9k
Shawn Matthews
Independent Non-Employee Directorless than a yearUS$43.38k0.50%
$ 4.4m
David Hill
Independent Non-Employee Director12.3yrsUS$49.61kno data
9.3yrs
Average Tenure
71yo
Average Age

Experienced Board: IMSR's board of directors are considered experienced (9.3 years average tenure).

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/05/27 17:04
End of Day Share Price 2026/05/27 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

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Industry and Sector Metrics

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Analyst Sources

Terrestrial Energy Inc. is covered by 2 analysts. 2 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Derek SoderbergCantor Fitzgerald & Co.
Jeffrey GramppNorthland Capital Markets