Terrestrial Energy Inc. (IMSR)
NASDAQ: IMSR · Real-Time Price · USD
7.62
+0.69 (9.96%)
At close: May 22, 2026, 4:00 PM EDT
7.51
-0.11 (-1.46%)
After-hours: May 22, 2026, 7:59 PM EDT
Company Description
Terrestrial Energy Inc. produces carbon free nuclear energy in North Carolina.
It offers Pre-construction services, such as site selection and site and use-specific engineering studies for construction and licensing planning preparation; construction services and component supply; and post construction IMSR Core-unit supply and fuel supply.
The company was founded in 2013 and is headquartered in Charlotte, North Carolina.
Terrestrial Energy Inc.
| Country | United States |
| Founded | 2013 |
| Industry | Utilities - Regulated Electric |
| Sector | Utilities |
| Employees | 74 |
| CEO | Simon Irish |
Contact Details
Address: 2730 W. Tyvola Road, Suite 100 Charlotte, North Carolina 28217 United States | |
| Phone | 646 687 8212 |
| Website | terrestrialenergy.com |
Stock Details
| Ticker Symbol | IMSR |
| Exchange | NASDAQ |
| Fiscal Year | January - December |
| Reporting Currency | USD |
| CIK Code | 2027582 |
| CUSIP Number | 881454102 |
| ISIN Number | US8814541020 |
| Employer ID | 99-1587241 |
| SIC Code | 3443 |
Key Executives
| Name | Position |
|---|---|
| Simon Irish | Chief Executive Officer and Director |
| Brian Thrasher | Chief Financial Officer |
| Steven Millsap | Chief Compliance Officer, General Counsel and Secretary |
| William Smith | Chief Operating Officer |
| Dr. David LeBlanc Ph.D. | Chief Technology Officer and Director |
Latest SEC Filings
| Date | Type | Title |
|---|---|---|
| Nov 14, 2025 | 15-15D | Filing |
| Sep 26, 2025 | EFFECT | Notice of Effectiveness |
| Sep 26, 2025 | 424B3 | Prospectus |
| Sep 23, 2025 | S-4/A | Filing |
| Sep 16, 2025 | S-4/A | Filing |
| Sep 12, 2025 | UPLOAD | Filing |
| Sep 4, 2025 | S-4/A | Filing |
| Aug 28, 2025 | UPLOAD | Filing |
| Aug 15, 2025 | S-4/A | Filing |
| Jul 30, 2025 | UPLOAD | Filing |