Company: HVIIR
Filing Date: 2025-10-23
Form Type: 425
Source: 0001493152-25-019005
Chunk: 1

Company: Hennessy Capital Investment Corp. VII
Filing Date: 2025-10-23
Form: 425
Chunk 1
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 the holder to receive one-twelfth (1/12) of one Class A ordinary share upon the consummation of a business combination |     | HVIIR     |     | The                                  
 Nasdaq Stock Market LLC              |
| Units,                                                                                                                                      
 each consisting of one Class A ordinary share and one right                                                                                 |     | HVIIU     |     | The                                  
 Nasdaq Stock Market LLC              |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 1.01 Entry into a Material Definitive Agreement.

On October 22, 2025, Hennessy Capital Investment Corp. VII, a Cayman Islands exempted company, limited by shares (the “Purchaser” or “HVII”), Solis Merger Sub LLC, a Delaware limited liability company and a direct wholly-owned subsidiary of the Purchaser (“Merger Sub”), and ONE Nuclear Energy, LLC, a Delaware limited liability company (the “Company”), entered into a business combination agreement (the “Business Combination Agreement”) that contemplates a $1.0 billion equity valuation of the Company and an all-stock combination transaction. The Company is an independent developer of large-scale energy solutions powered by natural gas and advanced nuclear small modular reactor (SMR) technologies.

Pursuant to the Business Combination Agreement, the parties thereto will enter into a business combination transaction by which, among other things, (i) the Purchaser will transfer by way of continuation and deregistration to and domesticate as a Delaware corporation and (ii) Merger Sub will merge with and into the Company (the “Merger”), with the Company being the surviving entity of the Merger and becoming a direct, wholly-owned subsidiary of the Purchaser. Upon closing of the Merger (the “Closing,” and the date on which the Closing occurs, the “Closing Date”), the Company will become a direct, wholly-owned subsidiary of Purchaser, and Purchaser will be a publicly traded company operating under the name “