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Terrestrial Energy Inc., a pre-revenue developer of Generation IV Integral Molten Salt Reactor (IMSR) plants, reported a larger loss while maintaining a strong cash position for the six months ended June 30, 2026. Operating expenses rose sharply as the company scaled its commercialization efforts, with research and development of $8.1 million and general and administrative costs of $15.3 million, driving an operating loss of $23.6 million and a net loss of $19.9 million compared with $12.5 million a year earlier.
Liquidity remains substantial, supported by the late‑2025 business combination and PIPE: cash and cash equivalents were $130.7 million, short‑term investments $142.8 million, and total assets $289.9 million, with working capital of $268.6 million. Management states it expects these resources to fund operations for at least 12 months after August 11, 2026.
Operationally, Terrestrial Energy advanced key regulatory and commercial milestones, including two DOE OTA agreements for pilot reactor and fuel‑salt production projects, multiple U.S. NRC safety-related submissions and approvals, a ground lease and R&D framework with Texas A&M for up to 77 acres at the RELLIS campus, and a collaboration with Riot Platforms to explore IMSR‑powered large‑scale data centers.
Terrestrial Energy Inc. reported second-quarter 2026 results and highlighted technical and commercial progress for its Generation IV Integral Molten Salt Reactor (IMSR) business. The company received NRC approval of its Postulated Initiating Events methodology topical report, advancing the IMSR licensing basis, and secured site control at the Texas A&M RELLIS campus through development and ground lease agreements. Updated unit economics now estimate $2.7 billion of cumulative lifetime revenue per IMSR plant, up from $2.1 billion, with a blended gross margin of 33%, expanding the serviceable addressable market to $2.3 trillion by 2050.
For the quarter ended June 30, 2026, operating expenses were $11.7 million versus $5.2 million a year earlier, driven by higher research and development and general and administrative costs. Net loss was $9.4 million compared with $6.2 million in 2025, or $(0.09) per basic and diluted share versus $(0.10). For the first six months of 2026, net loss was $19.9 million. As of June 30, 2026, cash and cash equivalents were $130.7 million, with total assets of $289.9 million and stockholders’ equity of $281.7 million. Net cash used in operating activities for the first half of 2026 was $14.8 million, while investing activities provided $48.5 million, primarily from investment redemptions.
Terrestrial Energy Inc. reported that EVP, Engineering Pamela Beth Cowan received a grant of 299,401 stock options under the Terrestrial Energy Inc. 2025 Equity Incentive Plan. The options have an exercise price of $5.0100 per share, become exercisable starting 2027-07-29, expire on 2036-07-29, and vest in one-third increments on each of the first, second and third anniversaries of the grant date, subject to her continued service. Following the grant, she held 299,401 derivative securities.
Terrestrial Energy Inc. is identified as the issuer in a Form 3 that names Pamela Beth Cowan, EVP, Engineering, as a reporting person. The Form 3 shows no insider stock transactions in the provided data, and the remarks reference Exhibit 24.1, a Power of Attorney.
Terrestrial Energy Inc., a Delaware corporation whose common stock trades on The Nasdaq Stock Market LLC under the symbol IMSR and whose redeemable warrants trade under IMSRW, reported a change in its Board of Directors.
On July 27, 2026, Shawn Matthews informed the company that he was resigning from the Board of Directors, effective the same day. The company states that Mr. Matthews’ decision to resign was not the result of any disagreement on any matter relating to its operations, policies or practices. The report is signed by Chief Financial Officer Brian Thrasher as the duly authorized officer.
Terrestrial Energy Inc. appointed Kathryn McCarthy to its Board of Directors, effective July 22, 2026. She brings decades of leadership in nuclear science and technology from Oak Ridge National Laboratory, the US ITER Project Office, Canadian Nuclear Laboratories and Idaho National Laboratory.
McCarthy will receive compensation under the existing non-employee director policy and has signed the standard indemnification agreement. The company stated there are no related-party arrangements or reportable transactions involving her. On July 28, 2026, Terrestrial Energy announced her appointment and that it will report second quarter 2026 earnings before market open on August 11, 2026, followed by an investor conference call at 8:30 a.m. Eastern Time.
Terrestrial Energy Inc. director Kathryn Ann McCarthy received a grant of 2049 Restricted Stock Units on 2026-07-23 under the Terrestrial Energy Inc. 2025 Equity Incentive Plan. Each unit represents a contingent right to acquire one share of Common Stock and vests in full on December 31, 2026, subject to her continued service. Following this award, she directly holds 2049 restricted stock units.
Terrestrial Energy Inc. has a new Form 3 on file for director Kathryn Ann McCarthy. The Form 3 identifies her as a director, not an officer and not a ten percent owner. It does not report any insider transactions or any securities currently held as beneficially owned.
Terrestrial Energy Inc. made an investor presentation available on July 21, 2026 for use in general corporate and investor communications. The presentation is posted on the company’s investor relations website and furnished as Exhibit 99.1 under a Regulation FD disclosure. The material is furnished and not deemed “filed” for purposes of Section 18 of the Exchange Act, and is not incorporated by reference into other Securities Act or Exchange Act filings unless specifically referenced. The company’s Common Stock trades on Nasdaq under IMSR, and its Redeemable Warrants trade under IMSRW, each whole warrant exercisable for one share of Common Stock at $11.50 per share.
Terrestrial Energy Inc. reported an upcoming executive leadership change. The employment of Steven Millsap, who serves as General Counsel, Secretary and Chief Compliance Officer, will be ending effective September 12, 2026. This change affects the company’s top legal and compliance functions. Terrestrial Energy is incorporated in Delaware, and its common stock and redeemable warrants trade on The Nasdaq Stock Market under the symbols IMSR and IMSRW, respectively.