ONE Nuclear Energy Inc. SEC filings ONEN
ONE Nuclear Energy Inc. has 127 filings in SEC EDGAR's recent list, going back to Nov 8, 2024. Its latest annual report, Form 10-K, was filed on Mar 6, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Sep 29, 2026 (material agreement, acquisition or sale of assets, unregistered share sale, change to shareholder rights, change in control, officer or director change, bylaw or fiscal year change, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 28, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 26, 2026 | — |
| 3 | Initial insider ownership | Oct 5, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Oct 2, 2026 | Sep 23, 2026 |
| SCHEDULE 13D | Ownership over 5% (active) | Sep 30, 2026 | — |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Change to shareholder rights, Change in control, Officer or director change, Bylaw or fiscal year change, Other events
|
Sep 29, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 3 | Initial insider ownership | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 23, 2026 |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Sep 23, 2026 | Sep 23, 2026 |
| 25-NSE | Delisting notice | Sep 23, 2026 | — |
| 425 | Filing | Sep 22, 2026 | — |
| 8-K |
Current report
Material agreement
|
Sep 22, 2026 | Sep 22, 2026 |
| 425 | Filing | Sep 14, 2026 | — |
| 425 | Filing | Sep 10, 2026 | — |
| 425 | Filing | Sep 9, 2026 | — |
| 425 | Filing | Sep 8, 2026 | — |
| 425 | Filing | Aug 31, 2026 | — |
| 425 | Filing | Aug 25, 2026 | — |
| 425 | Filing | Aug 24, 2026 | — |
| 8-K |
Current report
Shareholder vote results, Other events
|
Aug 24, 2026 | Aug 24, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 20, 2026 | Aug 20, 2026 |
| 425 | Filing | Aug 19, 2026 | — |
| 425 | Filing | Aug 18, 2026 | — |
| 425 | Filing | Aug 18, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 13, 2026 | — |
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 425 | Filing | Aug 10, 2026 | — |
| 8-K |
Current report
Material agreement
|
Aug 10, 2026 | Aug 7, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 6, 2026 | — |
| 8-K |
Current report
Other events
|
Aug 5, 2026 | Aug 5, 2026 |
| EFFECT | Filing | Aug 3, 2026 | — |
| 424B3 | Prospectus | Aug 3, 2026 | — |
| S-4/A | Filing | Jul 27, 2026 | — |
| S-4/A | Filing | Jul 13, 2026 | — |
| 425 | Filing | Jun 17, 2026 | — |
| 425 | Filing | Jun 17, 2026 | — |
| 425 | Filing | Jun 11, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jun 5, 2026 | — |
| 8-K |
Current report
Material agreement
|
Jun 2, 2026 | Jun 1, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 14, 2026 | — |
| 425 | Filing | May 14, 2026 | — |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 2026 |
| 425 | Filing | May 7, 2026 | — |
| 425 | Form 425 | May 7, 2026 | — |
| 425 | Filing | May 6, 2026 | — |
| 425 | Filing | May 5, 2026 | — |
| 425 | Filing | Apr 10, 2026 | — |
| 425 | Filing | Apr 9, 2026 | — |
| 425 | Filing | Apr 7, 2026 | — |
| S-4/A | Filing | Apr 3, 2026 | — |
| 425 | Filing | Apr 3, 2026 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Apr 3, 2026 | Mar 31, 2026 |
| 425 | Filing | Apr 2, 2026 | — |
| 10-K | Annual report | Mar 6, 2026 | Dec 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 17, 2026 | — |
| 425 | Filing | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 12, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 5, 2026 | — |
| 425 | Filing | Jan 5, 2026 | — |
| S-4 | Registration for a merger or exchange | Dec 23, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 5, 2025 | — |
| 10-Q | Quarterly report | Nov 14, 2025 | Sep 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 425 | Filing | Nov 5, 2025 | — |
| 425 | Filing | Nov 4, 2025 | — |
| 425 | Filing | Oct 29, 2025 | — |
| 425 | Filing | Oct 27, 2025 | — |
| 425 | Filing | Oct 23, 2025 | — |
| 425 | Filing | Oct 23, 2025 | — |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Oct 23, 2025 | Oct 22, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2025 | — |
| 10-Q | Quarterly report | Aug 13, 2025 | Jun 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2025 | — |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 14, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Other events
|
Jan 30, 2025 | Jan 30, 2025 |
| 8-K |
Current report
Other events
|
Jan 27, 2025 | Jan 21, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 24, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 23, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 21, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Officer or director change, Bylaw or fiscal year change, Other events
|
Jan 21, 2025 | Jan 16, 2025 |
| 424B4 | Prospectus | Jan 17, 2025 | — |
| EFFECT | Filing | Jan 16, 2025 | — |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| 3 | Initial insider ownership | Jan 16, 2025 | Jan 16, 2025 |
| CERT | Filing | Jan 16, 2025 | — |
| 8-A12B | Filing | Jan 16, 2025 | — |
| CORRESP | Letter to the SEC | Jan 15, 2025 | — |
| CORRESP | Letter to the SEC | Jan 15, 2025 | — |
| CORRESP | Letter to the SEC | Jan 15, 2025 | — |
| S-1/A | Amended registration statement | Jan 15, 2025 | — |
| UPLOAD | Letter from the SEC | Jan 14, 2025 | — |
| S-1/A | Amended registration statement | Jan 13, 2025 | — |
| CORRESP | Letter to the SEC | Dec 9, 2024 | — |
| S-1/A | Amended registration statement | Dec 9, 2024 | — |
| UPLOAD | Letter from the SEC | Dec 6, 2024 | — |
| S-1 | Registration statement | Nov 8, 2024 | — |
Showing 127 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Electric Services (SIC 4911)
- Listed as
- ONEN (Nasdaq)
- Fiscal year ends
- December 31
- Headquarters
- West Palm Beach, FL
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1846416
- Former names
- Hennessy Capital Investment Corp. VII (until Sep 22, 2026)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.