Anna S. Brunelle filed a Form 4 with the SEC on September 23, 2026, reporting changes in beneficial ownership of ONE Nuclear Energy Inc. (NASDAQ:ONEN) shares tied to the closing of a business combination between Hennessy Capital Investment Corp. VII and ONE Nuclear Energy LLC.

Key Highlights

  • Reporting person: Anna S. Brunelle, identified as "Director of Predecessor Issuer," filed as one reporting person on September 23, 2026.
  • Transaction code M: 25,000 Class B ordinary shares were converted into 25,000 Class A ordinary shares on September 23, 2026, on a one-for-one basis.
  • Derivative security price: The Class B ordinary shares underlying the derivative transaction carried a price of $0 at conversion.
  • Business combination closed: Hennessy Capital Investment Corp. VII was renamed ONE Nuclear Energy Inc. upon closing, with ONE Nuclear Energy LLC becoming a direct wholly-owned subsidiary.
  • Indirect pecuniary interest: According to the filing, Brunelle also holds a pecuniary interest in securities through her membership interest in HC VII Sponsor LLC, over which she does not have voting or dispositive control.
  • Domestication exemption: The filing states the conversion of Class A Ordinary Shares into Successor Shares "did not alter the proportionate interests of the security holders, and accordingly the conversion is exempt from Section 16 of the Securities Exchange Act of 1934, as amended."

Business Combination Closing Triggers Share Conversion for Brunelle

According to the filing, the transactions stem from a business combination agreement dated October 22, 2025. On September 23, 2026 (the "Closing Date"), Hennessy Capital Investment Corp. VII, described as "a Cayman Islands exempted company with limited liability" and referred to as the "Predecessor Issuer," was renamed ONE Nuclear Energy Inc. (the "Successor Issuer") and completed its initial business combination with ONE Nuclear Energy LLC, a Delaware limited liability company. Following the closing, ONE Nuclear Energy LLC became a direct wholly-owned subsidiary of the Successor Issuer.

The filing describes a two-step conversion process. First, each issued and outstanding Class B ordinary share of the Predecessor Issuer, par value $0.0001 per share, automatically converted on a one-for-one basis into one Class A ordinary share of the Predecessor Issuer, par value $0.0001 per share, in what the filing calls the "Sponsor Share Conversion." Brunelle's reported transaction reflects 25,000 Class B ordinary shares acquired (coded M) converting into 25,000 Class A ordinary shares disposed of (coded M), with the derivative security priced at $0.

Immediately after the Sponsor Share Conversion, the filing states, the Predecessor Issuer domesticated as a Delaware corporation. Each then-outstanding Class A ordinary share converted automatically into one share of common stock, par value $0.0001 per share, of the Successor Issuer. The filing notes that the signing party for Brunelle was "Nicholas Geeza as attorney-in-fact for Anna Brunelle," dated September 23, 2026.

What Was Disclosed

Anna S. Brunelle, Director of the Predecessor Issuer, reported a conversion of 25,000 Class B ordinary shares into Class A ordinary shares at $0 per share on September 23, 2026, as part of the closing of ONE Nuclear Energy Inc.'s initial business combination.