{"filing": {"accession": "0001493152-26-044924", "cik": "0001846416", "ticker": "ONEN", "company_name": "ONE Nuclear Energy Inc.", "form_type": "8-K", "filing_type": "8-K", "filing_date": "2026-09-29", "accepted_datetime": null, "acceptance_datetime": null, "accepted_at": null, "primary_doc_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/0001493152-26-044924-index.htm", "filing_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/0001493152-26-044924-index.htm", "period_of_report": "2026-09-23"}, "html_url": "/api/filings/000149315226044924/stream", "exhibits": [{"exhibit_number": "2.5", "exhibit_type": "2", "description": "Plan of Domestication, dated as of September 23, 2026", "filename": "ex2-5.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex2-5.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "3.1", "exhibit_type": "3", "description": "Certificate of Incorporation of ONE Nuclear Energy Inc.", "filename": "ex3-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex3-1.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "3.2", "exhibit_type": "3", "description": "Bylaws of ONE Nuclear Energy Inc.", "filename": "ex3-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex3-2.htm", "category": "incorporation", "incorporated_by_reference": false}, {"exhibit_number": "10.1", "exhibit_type": "10", "description": "Amended and Restated Registration Rights Agreement, dated as of September 23, 2026, by and among ONE Nuclear Energy Inc. and certain securityholders", "filename": "ex10-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "10.2", "exhibit_type": "10", "description": "Form of Lock-Up Agreement", "filename": "ex10-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-2.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.3", "exhibit_type": "10", "description": "Form of Indemnification Agreement", "filename": "ex10-3.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-3.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.4", "exhibit_type": "10", "description": "ONE Nuclear Energy Inc. 2026 Equity and Incentive Plan", "filename": "ex10-4.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-4.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.5", "exhibit_type": "10", "description": "Form of Option Award Agreement", "filename": "ex10-5.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-5.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.6", "exhibit_type": "10", "description": "Form of RSU Award Agreement", "filename": "ex10-6.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-6.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.9", "exhibit_type": "10", "description": "Second Amended and Restated Engagement Letter, dated September 23, 2026, by and between ONE Nuclear Energy LLC and B. Riley Securities, Inc.", "filename": "ex10-9.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-9.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.10", "exhibit_type": "10", "description": "Amendment No. 7, dated September 23, 2026, to Promissory Note, dated February 18, 2026, by and between ONE Nuclear Energy LLC and B. Riley Principal Capital, LLC", "filename": "ex10-10.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-10.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "10.11", "exhibit_type": "10", "description": "Executive Employment Agreement, by and between ONE Nuclear Energy, Inc. and Ann Anthony, effective as of September 23, 2026", "filename": "ex10-11.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex10-11.htm", "category": "contracts", "incorporated_by_reference": false}, {"exhibit_number": "14.1", "exhibit_type": "14", "description": "Code of Business Conduct of ONE Nuclear Energy Inc.", "filename": "ex14-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex14-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "21.1", "exhibit_type": "21", "description": "List of Subsidiaries of ONE Nuclear Energy Inc.", "filename": "ex21-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex21-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.1", "exhibit_type": "99", "description": "Unaudited financial statements of ONE Nuclear Energy LLC as of and for the three and six months ended June 30, 2026", "filename": "ex99-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex99-1.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.2", "exhibit_type": "99", "description": "Management\u2019s Discussion and Analysis of Financial Condition and Results of Operations of ONE Nuclear Energy LLC for the three and six months ended June 30, 2026", "filename": "ex99-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex99-2.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "99.3", "exhibit_type": "99", "description": "Unaudited Pro Forma Condensed Consolidated Combined Financial Statements", "filename": "ex99-3.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226044924/ex99-3.htm", "category": "other", "incorporated_by_reference": false}, {"exhibit_number": "2.1", "exhibit_type": "2", "description": "Business Combination Agreement, dated as of October 22, 2025, by and among Hennessy Capital Investment Corp. VII, Solis Merger Sub LLC, and ONE Nuclear Energy LLC (incorporated by reference to Exhibit 2.1 to the Registration Statement on Form S-4/A filed by Hennessy Capital Investment Corp. VII on July 27, 2026).", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226034669/forms-4a.htm", "category": "plans", "incorporated_by_reference": true}, {"exhibit_number": "2.2", "exhibit_type": "2", "description": "Omnibus Amendment No. 1 to the Business Combination Agreement and Promissory Note, dated as of March 31, 2026, by and among Hennessy Capital Investment Corp. VII, Solis Merger Sub LLC, and ONE Nuclear Energy LLC (incorporated by reference to Exhibit 2.2 to the Registration Statement on Form S-4/A filed by Hennessy Capital Investment Corp. VII on July 27, 2026).", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226034669/forms-4a.htm", "category": "plans", "incorporated_by_reference": true}, {"exhibit_number": "2.3", "exhibit_type": "2", "description": "Omnibus Amendment No. 2 to the Business Combination Agreement and Promissory Note, dated as of June 1, 2026, by and among Hennessy Capital Investment Corp. VII, Solis Merger Sub LLC, and ONE Nuclear Energy LLC (incorporated by reference to Exhibit 2.3 to the Registration Statement on Form S-4/A filed by Hennessy Capital Investment Corp. VII on July 27, 2026).", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226034669/ex2-3.htm", "category": "plans", "incorporated_by_reference": true}, {"exhibit_number": "2.4", "exhibit_type": "2", "description": "Omnibus Amendment No. 3 to the Business Combination Agreement and Promissory Note, dated as of August 7, 2026, by and among Hennessy Capital Investment Corp. VII, Solis Merger Sub LLC, and ONE Nuclear Energy LLC (incorporated by reference to Exhibit 2.1 to Form 8-K filed by Hennessy Capital Investment Corp. VII\u2019s on August 10, 2026).", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226036762/ex2-1.htm", "category": "plans", "incorporated_by_reference": true}, {"exhibit_number": "4.1", "exhibit_type": "4", "description": "Specimen Common Stock Certificate of ONE Nuclear Energy Inc. (incorporated by reference to Exhibit 4.3 to the Registration Statement on Form S-4/A filed by Hennessy Capital Investment Corp. VII on July 27, 2026).", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315226032942/ex4-3.htm", "category": "other", "incorporated_by_reference": true}, {"exhibit_number": "10.7", "exhibit_type": "10", "description": "Executive Services Agreement, dated August 18, 2025, by and between ONE Nuclear and BCR-ABL LLC (incorporated by reference to Exhibit 10.4 to the Registration Statement on Form S-4 filed by Hennessy Capital Investment Corp. VII on December 23, 2025)", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315225029121/ex10-4.htm", "category": "contracts", "incorporated_by_reference": true}, {"exhibit_number": "10.8", "exhibit_type": "10", "description": "Promissory Note, dated December 19, 2025, issued by ONE Nuclear Energy LLC to Hennessy Capital Investment Corp. VII (incorporated by reference to Exhibit 10.5 to the Registration Statement on Form S-4 filed by Hennessy Capital Investment Corp. VII on December 23, 2025)", "filename": "", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1846416/000149315225029121/ex10-5.htm", "category": "contracts", "incorporated_by_reference": true}], "sections": [], "tables": [{"table_index": 0, "table_type": "text", "caption": null, "header_text": "Delaware001-4247999-4813262"}, {"table_index": 1, "table_type": "text", "caption": null, "header_text": "700\n S. Rosemary Avenue,Suite 204West\n Palm Beach,FL33401"}, {"table_index": 2, "table_type": "text", "caption": null, "header_text": "\u2610Written\n communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)"}, {"table_index": 3, "table_type": "text", "caption": null, "header_text": "Title\n of each classTrading\n Symbol(s)Name\n of each exchange on which registered"}, {"table_index": 11, "table_type": "financial", "caption": null, "header_text": "\u25cfthe\n Company\u2019s ability to recognize the expected benefits of the Business Combination;"}, {"table_index": 13, "table_type": "financial", "caption": null, "header_text": "\u25cfchanges\n in foreign currency exchange rates, which can affect revenue and expenses;"}, {"table_index": 15, "table_type": "text", "caption": null, "header_text": "\u25cfeach\n person who is the beneficial owner of more than 5% of the outstanding shares of New ONE Nuclear Common Stock;"}, {"table_index": 17, "table_type": "text", "caption": null, "header_text": "Name and Address of Beneficial OwnerNumber ofShares ofNew ONE NuclearCommon StockBeneficiallyOwnedApproximatePercentage ofOutstanding Shares ofNew\nONE NuclearCommonStock"}, {"table_index": 18, "table_type": "text", "caption": null, "header_text": "(1)The\n address of Daniel J. Hennessy, Thomas D. Hennessy and HC VII Sponsor LLC is c/o Hennessy\n Capital Group LLC (\u201cHCG\u201d), 195 US Hwy 50, Suite 207, Zephyr Cove, NV 89448. HC\n VII Sponsor LLC is the"}, {"table_index": 37, "table_type": "exhibit_index", "caption": null, "header_text": "ExhibitNo.Description"}, {"table_index": 38, "table_type": "exhibit_index", "caption": null, "header_text": "*Filed\n or furnished herewith."}, {"table_index": 40, "table_type": "text", "caption": null, "header_text": "ONE\n NUCLEAR ENERGY INC."}], "exhibits_pending": false, "cdn_html": true, "response_time_ms": 29}