IMSR on Nasdaq
Terrestrial Energy Inc. /DE/
In its 2026 annual report the company says: “Terrestrial Energy Inc. is an advanced nuclear technology company developing the Integral Molten Salt Reactor nuclear plant, which uses the Company’s proprietary design of Molten Salt Reactor.”3 It is headquartered in Charlotte, North Carolina.1 Its shares trade on Nasdaq under the symbol IMSR.1
Price unavailable
Last updated Oct 21, 2026.
Overview
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- TickerIMSR on Nasdaq1
- IndustryFabricated Plate Work (Boiler Shops)1
- HeadquartersCharlotte, North Carolina1
- Incorporated inDE2
- Business address2730 W. Tyvola Road, Suite 100, Charlotte, Nc 282172
- Filer categoryNon-accelerated filer, Smaller reporting company, Emerging growth company2
- Legal formCorporation
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Terrestrial Energy Inc. is an advanced nuclear technology company developing the Integral Molten Salt Reactor nuclear plant (“IMSR Plant”), which uses the Company’s proprietary design of Molten Salt Reactor (“MSR”). Our mission is to transform global energy markets by commercializing our IMSR Plant, which will deliver low-carbon electricity and industrial heat with superior economics, speed to deployment, and siting flexibility. In a world demanding rapid, scalable nuclear solutions, the IMSR Plant offers a viable, efficient alternative to both the limitations of legacy nuclear and the intermittency of renewables.3 From its latest annual report
Financials
From the company’s reports to the SEC. Every number links to the filing it came from.
Key numbers, fiscal 2024
Where the money goes
Where each dollar of revenue went, fiscal 2024
- Research and development100¢$5.2M
- Income tax0¢$21.0K
Out of $248.4K in revenue.4 The company lost money this year.
Financial statements
Every line of the income statement as filed: the last 2 fiscal years, latest first.4
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Engineering services revenue | $248.4K | |
| Research and development costs | $9.8M | $5.2M |
| General and administrative | $14.3M | $4.2M |
| Depreciation and amortization | $1.2M | $1.3M |
| Total Operating Expenses | $25.2M | $10.6M |
| OPERATING LOSS | -$25.2M | -$10.4M |
| Government grants | $323.5K | $708.0K |
| Loss on extinguishment of debt | -$1.2M | |
| Interest and dividend income | $1.3M | $59.9K |
| Foreign exchange gain (loss) | -$57.2K | $617.4K |
| OTHER (EXPENSE) INCOME | -$2.8M | -$1.1M |
| Net loss before income tax | -$28.0M | -$11.5M |
| Income tax expense | -$17.9K | -$21.0K |
| Net loss | -$28.0M | -$11.5M |
| Loss per common share, basic (in dollars per share) | -$0.39 | -$0.19 |
| Loss per common share, diluted (in dollars per share) | -$0.39 | -$0.19 |
| Weighted-Average Shares of Common Shares Outstanding, Basic (in shares) | 71.6M shares | 60.4M shares |
| Weighted-Average Shares of Common Shares Outstanding, Diluted (in shares) | 71.6M shares | 60.4M shares |
| Foreign currency translation adjustments | -$260.7K | $395.5K |
| Change in unrealized gains on short term investments | $1.1M | |
| Comprehensive loss | -$27.1M | -$11.1M |
No quarter-by-quarter statement was filed.
Every line of the balance sheet as filed: the last 3 fiscal years (annual) or 3 quarters (quarterly), latest first.4
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $97.2M | $3.0M | |
| Short-Term Investments | $200.6M | ||
| Prepaid expenses and other current assets | $1.8M | $270.1K | |
| Total current assets | $299.6M | $3.3M | |
| Property and equipment, net | $834.8K | $770.5K | |
| Intangible assets, net | $707.7K | $617.0K | |
| Right-of-use assets | $1.8M | $622.5K | |
| Other assets | $63.6K | $29.7K | |
| Total Assets | $303.0M | $5.3M | |
| Accounts payable and accrued expenses | $5.5M | $748.9K | |
| Operating lease liabilities, current | $383.2K | $114.5K | |
| Finance lease liabilities, current | $33.4K | $140.8K | |
| Related party advance (Note 12) | $100.0K | ||
| Total current liabilities | $5.9M | $1.1M | |
| Operating lease liabilities, noncurrent | $1.6M | $598.5K | |
| Finance lease liabilities, noncurrent | $56.0K | $49.0K | |
| Deferred tax liabilities, net | $666.0K | ||
| Total liabilities | $7.6M | $18.8M | |
| Common shares, $0.0001 par value; 500,000,000 authorized shares; 81,771,422 and 39,159,901 shares issued and outstanding as of December 31, 2025 and 2024, respectively | $8.2K | $3.9K | |
| Exchangeable shares, $0.0001 par value; 24,011,017 shares issued and outstanding as of December 31, 2025 and December 31, 2024 | $2.4K | $2.4K | |
| Additional paid-in-capital | $418.8M | $82.8M | |
| Accumulated deficit | -$124.6M | -$96.6M | |
| Accumulated other comprehensive income | $1.2M | $337.2K | |
| Total stockholders' equity (deficit) | $295.4M | -$13.5M | -$4.9M |
| Total liabilities and stockholders' equity (deficit) | $303.0M | $5.3M | |
| Common shares, par value (in dollars per share) | $0.00 | $0.00 | |
| Common stock, number of shares authorized | 500.0M shares | 500.0M shares | |
| Common stock, shares issued | 81.8M shares | 39.2M shares | |
| Common stock, shares outstanding | 81.8M shares | 39.2M shares | |
| Exchangeable shares, par value (in dollars per share) | $0.00 | $0.00 | |
| Exchangeable shares, shares issued | 24.0M shares | 24.0M shares | |
| Exchangeable shares, share outstanding | 24.0M shares | 24.0M shares |
| Period ending | 2025-12-31 | 2024-12-31 | 2023-12-31 |
|---|---|---|---|
| Cash and cash equivalents | $97.2M | $3.0M | |
| Short-Term Investments | $200.6M | ||
| Prepaid expenses and other current assets | $1.8M | $270.1K | |
| Total current assets | $299.6M | $3.3M | |
| Property and equipment, net | $834.8K | $770.5K | |
| Intangible assets, net | $707.7K | $617.0K | |
| Right-of-use assets | $1.8M | $622.5K | |
| Other assets | $63.6K | $29.7K | |
| Total Assets | $303.0M | $5.3M | |
| Accounts payable and accrued expenses | $5.5M | $748.9K | |
| Operating lease liabilities, current | $383.2K | $114.5K | |
| Finance lease liabilities, current | $33.4K | $140.8K | |
| Related party advance (Note 12) | $100.0K | ||
| Total current liabilities | $5.9M | $1.1M | |
| Operating lease liabilities, noncurrent | $1.6M | $598.5K | |
| Finance lease liabilities, noncurrent | $56.0K | $49.0K | |
| Deferred tax liabilities, net | $666.0K | ||
| Total liabilities | $7.6M | $18.8M | |
| Common shares, $0.0001 par value; 500,000,000 authorized shares; 81,771,422 and 39,159,901 shares issued and outstanding as of December 31, 2025 and 2024, respectively | $8.2K | $3.9K | |
| Exchangeable shares, $0.0001 par value; 24,011,017 shares issued and outstanding as of December 31, 2025 and December 31, 2024 | $2.4K | $2.4K | |
| Additional paid-in-capital | $418.8M | $82.8M | |
| Accumulated deficit | -$124.6M | -$96.6M | |
| Accumulated other comprehensive income | $1.2M | $337.2K | |
| Total stockholders' equity (deficit) | $295.4M | -$13.5M | -$4.9M |
| Total liabilities and stockholders' equity (deficit) | $303.0M | $5.3M | |
| Common shares, par value (in dollars per share) | $0.00 | $0.00 | |
| Common stock, number of shares authorized | 500.0M shares | 500.0M shares | |
| Common stock, shares issued | 81.8M shares | 39.2M shares | |
| Common stock, shares outstanding | 81.8M shares | 39.2M shares | |
| Exchangeable shares, par value (in dollars per share) | $0.00 | $0.00 | |
| Exchangeable shares, shares issued | 24.0M shares | 24.0M shares | |
| Exchangeable shares, share outstanding | 24.0M shares | 24.0M shares |
Cash flow is reported year to date, not quarter by quarter, so there are no separate quarterly figures.
Every line of the cash flow as filed: the last 2 fiscal years, latest first.4
| Period ending | 2025-12-31 | 2024-12-31 |
|---|---|---|
| Net loss | -$28.0M | -$11.5M |
| Depreciation and amortization | $1.2M | $1.3M |
| Loss on extinguishment of debt | $1.2M | |
| Amortization of debt discount | $2.1M | $802.6K |
| Stock-based compensation | $3.1M | $670.2K |
| Unrealized foreign currency transaction gain | -$807.2K | -$812.8K |
| Noncash lease expense | $471.4K | $152.1K |
| Deferred income taxes | $15.4K | -$15.4K |
| Accounts receivable | $19.2K | |
| Prepaid expenses and other current assets | -$1.8M | $166.3K |
| Accounts payable and accrued expenses | $5.4M | -$196.3K |
| Operating lease payments | -$328.5K | -$133.5K |
| Net cash used in operating activities | -$16.5M | -$8.2M |
| Purchases of intangible assets | -$86.2K | -$54.4K |
| Purchases of property and equipment | -$1.1M | -$607.9K |
| Purchase of short-term investments | -$199.5M | |
| Net cash used in investing activities | -$200.6M | -$662.3K |
| Proceeds from Series A-1 preferred shares issuance | $25.8M | |
| Proceeds from the exercise of stock options for common shares | $136 | |
| Proceeds from warrant exercise for common shares | $4.5M | |
| Proceeds from issuance of shares to PIPE investors | $49.5M | |
| Proceeds from merger financing | $243.1M | |
| Payment of merger and recapitalization related transaction costs | -$22.3M | |
| Proceeds from related party advances | $100.0K | |
| Repayment of finance lease liabilities | -$149.1K | -$58.7K |
| Net cash provided by financing activities | $311.4M | $7.3M |
| Effect of exchange rate changes on cash and cash equivalents | -$140.7K | $32.2K |
| Increase (decrease) in cash and cash equivalents during the year | $94.1M | -$1.6M |
| Interest paid | $514.4K | |
| Conversion of convertible notes to common shares | $29.8M | |
| Initial recognition of finance leases | $42.6K | |
| Recognition of warrants in connection with convertible notes, net of tax | $2.6M | $2.0M |
| Related party debt extinguishment | $202.2K | |
| Acquisition of non-controlling interest | $534.6K |
No quarter-by-quarter statement was filed.
Corporate structure
Terrestrial Energy Inc. /DE/ sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.
Major holders of Terrestrial Energy Inc. /DE/
- CITADEL ADVISORS LLC Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Feb 17, 2026 (2 filings since Sep 30, 2025)
- Roberto Marco Sella Filed SCHEDULE 13G on Terrestrial Energy Inc. /DE/, latest Jan 22, 2026
- Linden Capital L.P. Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Nov 12, 2025 (2 filings since Mar 31, 2025)
- Magnetar Financial LLC Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Nov 12, 2025 (3 filings since Nov 6, 2024)
- David Michael Leblanc Filed SCHEDULE 13D on Terrestrial Energy Inc. /DE/, latest Nov 4, 2025
- Simon Irish Filed SCHEDULE 13D on Terrestrial Energy Inc. /DE/, latest Nov 4, 2025
- First Trust Capital Management L.P. Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Aug 14, 2025 (3 filings since Nov 14, 2024)
- LMR Partners LLP Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Aug 14, 2025 (2 filings since Nov 14, 2024)
- MERUS GLOBAL INVESTMENTS, LLC Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Aug 14, 2025 (2 filings since Jun 2, 2025)
- AQR CAPITAL MANAGEMENT LLC Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Aug 13, 2025 (4 filings since Nov 14, 2024)
- PICTON MAHONEY ASSET MANAGEMENT Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest Aug 6, 2025 (3 filings since Oct 17, 2024)
- Goldman Sachs Filed SCHEDULE 13G/A on Terrestrial Energy Inc. /DE/, latest May 12, 2025 (2 filings since Feb 12, 2025)
- Terrestrial Energy Inc. /DE/ Charlotte, North Carolina
Built from major holders from Schedules 13D and 13G. Each entity in the chart links to its source.
What it owns
What Terrestrial Energy Inc. /DE/ reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.
Property and equipment
| Item | Latest | A year before | Change |
|---|---|---|---|
| Property and equipment, before depreciation | $2.1M4 Dec 31, 2025 | $7.5M4 Dec 31, 2024 | −72.0% |
| Accumulated depreciation | $1.3M4 Dec 31, 2025 | $6.8M4 Dec 31, 2024 | −81.2% |
| Property and equipment, net | $834.8K4 Dec 31, 2025 | $770.5K4 Dec 31, 2024 | +8.3% |
| Operating-lease assets (leased space) | $1.8M4 Dec 31, 2025 | $622.5K4 Dec 31, 2024 | +191.5% |
Investments
| Item | Latest | A year before | Change |
|---|---|---|---|
| Cash and cash equivalents | $97.2M4 Dec 31, 2025 | $3.0M4 Dec 31, 2024 | +3115.5% |
| Marketable securities, current | $200.6M4 Dec 31, 2025 | ||
| Marketable securities, non-current | $235.2M7 Dec 31, 2024 |
Intangibles and goodwill
| Item | Latest | A year before | Change |
|---|---|---|---|
| Intangible assets, net (excluding goodwill) | $707.7K4 Dec 31, 2025 | $617.0K4 Dec 31, 2024 | +14.7% |
| Finite-lived intangibles, gross | $1.0M4 Dec 31, 2025 | $887.4K4 Dec 31, 2024 | +14.3% |
| Accumulated amortization | $307.0K4 Dec 31, 2025 | $270.4K4 Dec 31, 2024 | +13.5% |
| Finite-lived intangibles, net | $707.7K4 Dec 31, 2025 | $617.0K4 Dec 31, 2024 | +14.7% |
Properties, in its own words
Our headquarters is located in Charlotte, North Carolina, where we have leased approximately 7,355 square feet of commercial office space, expiring in July 2030. Additionally, we have leased approximately 9,822 square feet of office space in Oakville, Canada, for engineering and R&D support, expiring in January 2030.
Item 2 of the 10-K filed Mar 30, 2026.3
Leadership
Who has led Terrestrial Energy Inc. /DE/, and when. Pick a name to see everywhere that person has worked.
Chief executive
Chair
Chief financial officer
- Chief executive officerSimon Irish Oct 30, 2025 to now8
- Chief executive officerShawn Matthews Aug 15, 2024 to Aug 20, 20249
- ChairShawn Matthews Aug 15, 2024 to Aug 20, 20249
- Chief financial officerBrian Patrick Thrasher Nov 7, 2025 to now10
- Chief financial officerSteven Bischoff Aug 15, 2024 to Aug 15, 202411
Board members and other officers (13)
- EVP, EngineeringPamela Beth Cowan Jul 31, 2026 to now12
- GC, Sec'y & Chief Comp. Off'rSteven M. Millsap Nov 7, 2025 to now13
- Board memberShawn Matthews Oct 30, 2025 to now14
- Board memberSimon Irish Oct 30, 2025 to now8
- Board memberCharles G. Pardee Nov 7, 2025 to now15
- Board memberDavid John Hill Nov 7, 2025 to now16
- Board memberFrederick W. Buckman Nov 7, 2025 to now17
- Board memberJohn Hugh Macdiarmid Nov 7, 2025 to now18
- Board memberRobert Wood Jones Nov 7, 2025 to now19
- Board memberJacob Loveless Aug 15, 2024 to Aug 20, 202420
- Board memberMichael J. Connor Aug 15, 2024 to Aug 20, 202421
- Board memberSteven Bischoff Aug 15, 2024 to Aug 15, 202411
- General counselSteven M. Millsap Apr 14, 2026 to now22
Named in SEC Form D filings
People the company listed in its private-offering notices.
Former names
- HCM II Acquisition Corp.Apr 26, 2024 to Oct 29, 20252
Timeline
- Aug 11, 20268-K Results of operations24
- Jul 31, 20268-K Executive or director change25
- Jul 28, 20268-K Executive or director change; Regulation FD disclosure26
- Jul 21, 20268-K Regulation FD disclosure27
- Jul 17, 20268-K Executive or director change28
- Jun 12, 20268-K Shareholder vote29
- May 14, 20268-K Results of operations30
- May 8, 20268-K Executive or director change31
- Apr 16, 20268-K Executive or director change32
- Mar 30, 20268-K Results of operations33
- Jan 29, 20268-K Regulation FD disclosure34
- Nov 24, 20258-K Change of auditor35
- Oct 30, 2025New chief executive Simon Irish becomes CEO8
- Aug 15, 2024New chief executive Shawn Matthews becomes CEO9
Calendar
Coming up
- Nov 10, 2026Reports results for the quarter ending Sep/202636
When it reported results
- Aug 11, 2026Reported quarterly or annual results24
- May 14, 2026Reported quarterly or annual results30
- Mar 30, 2026Reported quarterly or annual results33
Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar
Filings
178 filings to the SEC since October 2021: 3 annual reports, 9 quarterly reports, 22 major events, 47 insider forms, 29 large holders, 1 private raises, 67 other. The latest 20:
- Oct 15, 20264 EDGAR
- Oct 14, 20264 EDGAR
- Oct 13, 20264 EDGAR
- Aug 14, 2026424B3 EDGAR
- Aug 11, 202610-Q EDGAR
- Aug 11, 20268-K EDGAR
- Jul 31, 20268-K EDGAR
- Jul 31, 20264 EDGAR
- Jul 31, 20263 EDGAR
- Jul 28, 20268-K EDGAR
- Jul 27, 20264 EDGAR
- Jul 27, 20263 EDGAR
- Jul 21, 20268-K EDGAR
- Jul 17, 20268-K EDGAR
- Jun 12, 20268-K EDGAR
- Jun 11, 2026EFFECT EDGAR
- Jun 5, 2026POS AM EDGAR
- May 19, 2026S-8 EDGAR
- May 14, 2026424B3 EDGAR
- May 14, 2026424B3 EDGAR
The 178 filings since October 2021 can be filtered by form type and year here when JavaScript is on.
Every filing from the last five years, summarized. The full record is on SEC EDGAR.
Major holders
Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.
- CITADEL ADVISORS LLCSCHEDULE 13G/A, 2 filings Sep 30, 2025 to Feb 17, 202637
- Roberto Marco SellaSCHEDULE 13G, 1 filing Jan 22, 202638
- Linden Capital L.P.SCHEDULE 13G/A, 2 filings Mar 31, 2025 to Nov 12, 202539
- Magnetar Financial LLCSCHEDULE 13G/A, 3 filings Nov 6, 2024 to Nov 12, 202540
- David Michael LeblancSCHEDULE 13D, 1 filing Nov 4, 202541
- Simon IrishSCHEDULE 13D, 1 filing Nov 4, 202542
- First Trust Capital Management L.P.SCHEDULE 13G/A, 3 filings Nov 14, 2024 to Aug 14, 202543
- LMR Partners LLPSCHEDULE 13G/A, 2 filings Nov 14, 2024 to Aug 14, 202544
- MERUS GLOBAL INVESTMENTS, LLCSCHEDULE 13G/A, 2 filings Jun 2, 2025 to Aug 14, 202545
- AQR CAPITAL MANAGEMENT LLCSCHEDULE 13G/A, 4 filings Nov 14, 2024 to Aug 13, 202546
- PICTON MAHONEY ASSET MANAGEMENTSCHEDULE 13G/A, 3 filings Oct 17, 2024 to Aug 6, 202547
- Goldman SachsSCHEDULE 13G/A, 2 filings Feb 12, 2025 to May 12, 202548
- BarclaysSCHEDULE 13G/A, 2 filings Feb 7, 2025 to Mar 21, 202549
- HCM Investor Holdings II, LLCSC 13G, 1 filing Aug 26, 202450
Executive pay
What the company paid its top executives, from the summary compensation table in its proxy statement. Total pay includes salary, bonus, stock and option awards and other pay, as the company valued them.
| Year | Executive | Age | Salary | Total pay |
|---|---|---|---|---|
| 2025 | Simon Irish | 57 | $169.5K | $13.1M51 |
| 2025 | Steven Millsap | 58 | $163.6K | $1.5M51 |
| 2025 | Brian Thrasher | 52 | $172.7K | $1.5M51 |
| 2025 | Shawn Matthews | 59 | $5.5K | $42.2K51 |
| 2024 | Chief Executive Officer | $43.0K | $241.0K51 |
Money raised
Private offerings the company reported to the SEC on Form D.
- Mar 19, 2026Raised $85,320 in a private offering of equity Form D: 1 investor so far Form D
Held by these funds
The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.
| Fund | Shares | Value | Share of the fund | Change |
|---|---|---|---|---|
| Vanguard Capital Management LLC | 3,414,196 | $24.2M | 0.0% | +2,110,744 |
| Exchange Traded Concepts, LLC | 2,160,074 | $15.3M | 0.1% | +68,913 |
| UBS Group AG | 1,772,173 | $12.5M | 0.0% | +1,278,596 |
| BlackRock, Inc. | 1,074,524 | $7.6M | 0.0% | −46,361 |
| Jpmorgan Chase & Co | 966,797 | $6.8M | 0.0% | −106,276 |
| Geode Capital Management, LLC | 693,934 | $4.9M | 0.0% | +34,546 |
| LMR Partners LLP | 690,702 | $4.9M | 0.0% | No change |
| D. E. Shaw & Co., Inc. | 667,968 | $4.7M | 0.0% | −546,809 |
| Hudson Bay Capital Management LP | 589,293 | $4.2M | 0.0% | +137,006 |
| Susquehanna International Group, Llp | 571,832 | $4.0M | 0.0% | +241,556 |
| WINTON GROUP Ltd | 504,000 | $3.6M | 0.1% | +7,700 |
| Morgan Stanley | 412,815 | $2.9M | 0.0% | +127,266 |
| Verition Fund Management LLC | 374,958 | $2.7M | 0.0% | −70,000 |
| Vanguard Fiduciary Trust Co | 365,772 | $2.6M | 0.0% | +65,365 |
| Vennlight Capital Management, LP | 353,010 | $2.5M | 1.7% | −222,489 |
| State Street Corp | 346,696 | $2.5M | 0.0% | +1,176 |
| Charles Schwab Investment Management Inc | 333,599 | $2.4M | 0.0% | −4,392 |
| Highbridge Capital Management LLC | 244,000 | $1.7M | 0.1% | New |
| Jane Street Group, LLC | 240,719 | $1.7M | 0.0% | New |
| Alyeska Investment Group, L.P. | 222,000 | $1.6M | 0.0% | −500,000 |
| Renaissance Technologies LLC | 183,800 | $1.3M | 0.0% | −224,100 |
| Creek Drive Management Group LLC | 175,000 | $1.2M | 0.8% | −155,000 |
| CastleKnight Management LP | 165,400 | $1.2M | 0.0% | +104,700 |
| Shay Capital LLC | 134,539 | $952.5K | 0.1% | +16,453 |
| Northern Trust Corp | 126,539 | $895.9K | 0.0% | +2,002 |
13F reports cover disclosed long positions in U.S. stocks only.
SEC filer profile
How Terrestrial Energy Inc. /DE/ is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.
- Name on EDGARTerrestrial Energy Inc. /DE/1
- CIK0002019804
- Employer ID (EIN)98-17854063
- Filer statusNon-accelerated filer an emerging growth company; a smaller reporting company; not a shell company3
- Incorporated inDelaware3
- Fiscal year endsDecember 311
- Industry code (SIC)3443 Fabricated Plate Work (Boiler Shops)1
- SEC reviewing officeOffice of Manufacturing, Division of Corporation Finance1
- Business address2730 W. Tyvola Road, Suite 100, Charlotte, NC 282171
- Phone203-930-22001
- Shares outstanding105,935,254 as of Aug 11, 20266
- Public float$191.5M as of Jun 30, 20253
- AuditorUHY LLP, Melville, New York PCAOB ID 1195; no auditor attestation of internal control over financial reporting3
- On EDGAR sinceApr 26, 20241
- Filings178 in all: 4 (26), 8-K (21), 3 (19), SCHEDULE 13G/A (15), 425 (12), CORRESP (10), 424B3 (8), 10-Q (7)1
All 35 form types
SCHEDULE 13G (7), UPLOAD (7), SC 13G (5), EFFECT (4), S-1/A (4), S-4/A (4), 10-K (2), 10-Q/A (2), DEFA14A (2), DRS (2), POS EX (2), S-1 (2), S-8 (2), SCHEDULE 13D (2), 10-K/A (1), 3/A (1), 4/A (1), 424B4 (1), 8-A12B (1), 8-K/A (1), ARS (1), CERT (1), D (1), DEF 14A (1), NT 10-Q (1), POS AM (1), S-4 (1)
- Latest filingsAnnual report (10-K) Mar 30, 2026
Quarterly report (10-Q) Aug 11, 2026
Proxy statement (DEF 14A) Apr 29, 2026
Latest 8-K (8-K) Aug 11, 2026
Securities registered for trading
| Class | Symbol | Exchange |
|---|---|---|
| Common Stock, par value $0.0001 per share | IMSR | The Nasdaq Stock Market LLC |
| Redeemable Warrants, each whole warrant exercisable for one Common Stock at a price of $11.50 per share | IMSRW | The Nasdaq Stock Market LLC |
From the cover page of the 10-K filed Mar 30, 2026 (Section 12(b) of the Exchange Act).3
Risk factors and legal proceedings
The risks Terrestrial Energy Inc. /DE/ names in Item 1A of its 10-K filed Mar 30, 2026: 64 risks under these headings, as written.3
- Risks Related to Our Business and Industry
- We have not yet constructed an IMSR Plant, nor have we entered into any binding contract with any customer, including any of our current portfolio of project consortium partners, to operate an IMSR Plant or deliver electricity or heat, and there is no guarantee that we will be able to do so in the future. Our limited commercial operating history makes it difficult to evaluate our prospects, the risks and challenges we may encounter and our total potential addressable market.
- Any delays in the development and construction of our IMSR plants and the manufacturing of their key components due to a number of factors, including the degree of pre-fabrication, standardization, on-site construction, long-lead procurement, contractor performance, plant pre-operational and startup testing and other site-specific considerations may adversely impact our business and financial condition.
- Our limited commercial operating history in a rapidly evolving industry makes it difficult for us to evaluate our future prospects and prepare for the risks and challenges we may encounter.
- If we fail to manage our growth effectively, we may be unable to execute our business plan, and our business, results of operations, and financial condition could be harmed.
- IMSR Plants may suffer significant construction delays or cost increases as a result of a variety of factors. Any such delays could cause the construction of a project to ultimately be unprofitable for the Company or otherwise adversely affect the Company’s business, financial condition and results of operations.
- Any failure to effectively update the design, construction, and operations of our planned IMSR Plants to ensure cost competitiveness could reduce the marketability of our designs and has the potential to impact deployment schedules.
- Successful commercialization of new, or further enhancements to existing, alternative low-carbon energy generation technologies, such as adding carbon capture and sequestration/storage mechanisms to fossil fuel power plants, wind, solar, geothermal or fusion, may prove to be more cost effective or appealing to the global energy markets and therefore may adversely affect the market demand for our IMSR Plants, potentially adversely affecting our ability to successfully commercialize our IMSR Plants.
- If demand for our IMSR Plants fails to develop sufficiently, our business and operations could suffer, and we would be unable to achieve or maintain profitability.
- Our IMSR Plant design may not attract customers as quickly as we expect, or at all.
- Customers may rescind or back out of non-binding agreements due to various reasons, which could adversely affect our revenue streams, project timelines, and overall financial performance.
- Our cost estimates are sensitive to broader economic factors, and our ability to control or manage our costs may be limited.
The other 53 risks
- Competition from existing or new competitors or technologies domestically and internationally could cause us to experience one or more of downward pressures on prices, lower customer demand for our products and services, reduced margins, the inability to take advantage of new business opportunities and the loss of market share.
- Substantial governmental support for competing technologies or their fuel supply may reduce our competitive advantages.
- Changes in the availability and cost of electricity, natural gas, oil and other forms of energy are subject to volatile market conditions that could adversely affect our business prospects, financial condition, results of operations and cash flows.
- The potential disruption of uranium supply chains makes long-range planning uncertain.
- The cost of electricity and heat generated from nuclear sources may not be cost competitive with other electricity generation sources and/or heat generated from other sources in some markets, which could materially and adversely affect our business prospects, financial condition, results of operations and cash flow.
- Our illustrative unit economics and levelized cost information are subject to significant risks, assumptions, estimates, and uncertainties. As a result, our actual revenues, timing for achieving business milestones, expenses, capital expenditures, profitability and cash flows may differ materially from our expectations.
- The IMSR plants may not operate as planned.
- We and our customers operate in a politically sensitive environment, and the public perception of nuclear energy and radioactive materials could materially and adversely affect us, our customers, and the markets in which we operate.
- Incidents involving nuclear energy facilities, including accidents, terrorist acts or other high-profile events involving radioactive materials, could materially and adversely affect the public perception of the safety of nuclear energy, and such adverse effects could potentially decrease demand for nuclear energy, increase regulatory requirements and costs, or result in liability or claims that could materially and adversely affect our business.
- The direct and indirect impact on us and our customers from severe weather and other effects of climate change and the economic impacts of the transition to low-emissions energy, could adversely affect our financial condition, operating results, and cash flows.
- The occurrence of adverse events, cancellations of significant projects, delays in project timelines, adjustments in cost structures, and other negative developments announced by competitors could have an impact on our operations, financial performance, and future prospects.
- The IMSR Plant involves toxic, hazardous and/or radioactive materials and could result in liability without regard to fault or negligence.
- Unsatisfactory safety performance or security incidents at our customers’ facilities — or any nuclear facility around the world — could have a material adverse effect on our business, financial condition and results of operations.
- We are subject to information technology and cyber security threats which could have adverse effects, including regulatory effects, on our business and results of operations.
- We rely on a limited number of suppliers for certain materials and supplied components, some of which are highly specialized and are being designed for first-of-a-kind or sole use in the IMSR Plant. We and our third-party vendors may not be able to obtain sufficient materials or supplied components to meet our manufacturing and operating needs, or obtain such materials on favorable terms or at expected costs.
- We depend on key executives, management, directors, and other highly skilled personnel with highly technical expertise to execute our business plan and oversee our operations, as applicable. Our failure to successfully recruit and retain experienced and qualified personnel could have a material adverse effect on our business.
- Our ability to protect our patents and other intellectual property rights may be challenged and is not guaranteed. If we are unable to protect our intellectual property rights, our business and competitive position may be harmed.
- We currently enjoy only limited geographical protection with respect to certain issued patents and trademarks and may not be able to protect our intellectual property rights throughout the world. If we are unable to protect our intellectual property rights, our business and competitive position may be harmed.
- We may need to defend ourselves against intellectual property infringement claims, which may be time-consuming and could cause us to incur substantial fees and costs.
- We may not identify relevant third-party patents or may incorrectly interpret the relevance, scope or expiration of a third-party patent, which might adversely affect our ability to develop and market our IMSR Plants.
- Customization and hybridization of the Thermal and Electric Facility may require additional research and development and/or reliance on external service providers.
- We may be subject to claims of ownership and other rights to our patents and other intellectual property by third parties.
- Some of our management team have limited experience in operating a public company.
- Compliance with the reporting obligations under the United States securities laws and Section 404 of Sarbanes-Oxley requires expenditures of capital and other resources and may divert management’s attention. If we fail to comply with these reporting obligations or to maintain adequate internal controls our operations, and investors’ confidence in us, could be materially and adversely affected.
- Risks Related to Compliance with Law, Government Regulation and Litigation
- Our business may be subject to the policies, priorities, regulations, mandates and funding levels of governmental entities and may be negatively or positively impacted by any change thereto.
- The U.S. government’s budget deficit and the national debt, as well as any inability of the U.S. government to complete its budget or appropriations process for any government fiscal year could have an adverse impact on our or our customers’ business, financial condition, results of operations and cash flows.
- We may pursue government awards involving cost-share related to our R&D work, which could be affected by our failure to comply with certain laws and regulations.
- Uncertain global macro-economic and political conditions could materially adversely affect our business prospects, financial condition, results of operations and cash flow.
- We and our suppliers are subject to stringent U.S. export and import control laws and regulations and analogous laws and regulations in other jurisdictions. Unfavorable changes in these laws and regulations or U.S. government or other relevant government licensing policies, our failure to secure timely U.S. government or other relevant government authorizations under such laws and regulations, or our failure to comply with such laws and regulations could have a material adverse effect on our business prospects, financial condition, results of operations and cash flows.
- We are part of the nuclear power industry, which is highly regulated. Our molten salt nuclear fuel form differs from fuel forms currently licensed and used by commercial nuclear power plants, and our IMSR technology differs from reactor technology currently in commercial operation, including with respect to potential industrial uses. As a result, the regulatory licensing and approval process for our IMSR Plants may be delayed and made more costly, and industry acceptance of our nuclear fuels may be hampered.
- Changes in government agency budgets as well as staffing shortages at national laboratories and other government agencies may lengthen our estimated timelines for regulatory approval and construction.
- Even if the IMSR Plant is licensed in the United States or Canada, we must still obtain approvals on a country-by-country basis to deploy these reactor technologies, which approvals may be delayed or denied or which may require modification to our design.
- There is no assurance that nuclear regulators will accept the exclusion of the Thermal and Electric Facility from the operating license requirements for the IMSR Plant.
- Our customers could incur substantial costs as a result of violations of, or liabilities under, environmental laws.
- We are subject to laws and regulations governing the use, transportation, and disposal of toxic, hazardous and/or radioactive materials. Failure to comply with these laws and regulations could result in substantial fines and/or enforcement actions.
- Changes in tax laws could adversely affect our business prospects and financial results.
- We may become involved in litigation that may materially adversely affect our business, financial condition and results of operations.
- Risks Related to Capital Resources
- In order to fulfill our business plan, we will require additional funding. To the extent we require such additional investor funding in the future, such funding may be dilutive to our investors and no assurances can be provided as to terms of any such funding. Any such funding and the associated terms will be highly dependent upon market conditions and the progress of our business at the time we seek such funding. The terms of any financing that we pursue may be less favorable than previously anticipated and could become even less favorable depending on the amount of funds we may require.
- Our corporate expenditures, including our corporate level outspend, are subject to numerous risks and uncertainties.
- We may experience an adverse impact from inflation and rising costs.
- We have a history of financial losses and may not achieve profitability in the future. We will need substantial additional capital to complete the design of the IMSR Plant and fund our operations.
- Future indebtedness could expose us to risks that could adversely affect our business, financial condition and results of operations.
- Our actual operating results may differ significantly from any guidance we may provide.
- Our financial results may vary significantly from quarter to quarter.
- Changes in our accounting estimates and assumptions could negatively affect the reporting of our financial position and results of operations.
- Risks Related to our Securities
- We incur additional costs as a public company that reports to the SEC and our management is required to devote substantial time to meet compliance obligations.
- The market price of Terrestrial Energy’s securities may decline.
- There is no guarantee that our warrants will ever be in the money, and they may expire worthless.
- Your unexpired public warrants may be redeemed prior to their exercise at a time that is disadvantageous to you, thereby making your public warrants worthless.
- The Warrants may have an adverse effect on the market price of the Terrestrial Common Shares.
- The Certificate of Incorporation provides, subject to limited exceptions, that the courts of the State of Delaware will be the sole and exclusive forum for certain stockholder litigation matters, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees or stockholders.
- A significant portion of our total outstanding shares of common stock are restricted from immediate resale but may be sold into the market in the near future. This could cause the market price of our common stock to drop significantly, even if our business is doing well.
- As an “emerging growth company,” we cannot be certain if the reduced disclosure requirements applicable to “emerging growth companies” will make our common stock less attractive to investors.
Legal proceedings
From time to time, we may be subject to various claims, lawsuits and other legal and administrative proceedings that may arise in the ordinary course of business. Some of these claims, lawsuits and other proceedings may range in complexity and result in substantial uncertainty; it is possible that they may result in damages, fines, penalties, non-monetary sanctions, or relief. We currently do not have any claims, lawsuits, or proceedings against us that, individually or in the aggregate, would be considered material to our business or likely to result in a material adverse effect on our future operating results, financial condition, or cash flows.
The opening of Item 3, Legal Proceedings.3
Sources
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- 8SEC EDGARSimon Irish, Chief executive officer
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- 12SEC EDGARPamela Beth Cowan, EVP, Engineering
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- 14SEC EDGARShawn Matthews, Board member
- 15SEC EDGARCharles G. Pardee, Board member
- 16SEC EDGARDavid John Hill, Board member
- 17SEC EDGARFrederick W. Buckman, Board member
- 18SEC EDGARJohn Hugh Macdiarmid, Board member
- 19SEC EDGARRobert Wood Jones, Board member
- 20SEC EDGARJacob Loveless, Board member
- 21SEC EDGARMichael J. Connor, Board member
- 22SEC EDGARSteven M. Millsap, General counsel
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- 24SEC EDGARResults of operations
- 25SEC EDGARExecutive or director change
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- 27SEC EDGARRegulation FD disclosure
- 28SEC EDGARExecutive or director change
- 29SEC EDGARShareholder vote
- 30SEC EDGARResults of operations
- 31SEC EDGARExecutive or director change
- 32SEC EDGARExecutive or director change
- 33SEC EDGARResults of operations
- 34SEC EDGARRegulation FD disclosure
- 35SEC EDGARChange of auditor
- 36NasdaqNasdaq calendar
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