Amendment to Business Combination Agreement and Promissory Note

Hennessy Capital Investment Corp. VII (HVII), along with its subsidiary Solis Merger Sub LLC, and ONE Nuclear Energy LLC (ONE Nuclear) have entered into an amendment to their Business Combination Agreement and a related Promissory Note. The amendment, dated March 31, 2026, extends the outside date for the business combination from April 30, 2026, to June 30, 2026. Additionally, the maturity date of the Promissory Note, originally issued for loan advances to cover third-party legal, accounting, and audit services, has been extended from March 31, 2026, to June 30, 2026. This amendment is filed as an 8-K report, which also includes an updated investor presentation. The filing details the terms of the amendment, governing law, and includes forward-looking statements regarding the business combination and the future prospects of ONE Nuclear.