{"filing": {"accession": "0001493152-26-039232", "cik": "0001288855", "ticker": "OPHC", "company_name": "OptimumBank Holdings, Inc.", "form_type": "8-K", "filing_type": "8-K", "filing_date": "2026-08-19", "accepted_datetime": null, "acceptance_datetime": null, "accepted_at": null, "primary_doc_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/0001493152-26-039232-index.htm", "filing_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/0001493152-26-039232-index.htm", "period_of_report": "2026-08-19"}, "html_url": "/api/filings/000149315226039232/stream", "exhibits": [{"exhibit_number": "4.1", "exhibit_type": "4", "description": "Indenture, dated August 19, 2026, by and between OptimumBank Holding Company and UMB Bank, National Association", "filename": "ex4-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/ex4-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "4.2", "exhibit_type": "4", "description": "Forms of 7.50% Fixed-to-Floating Rate Subordinated Note due 2036 (included as Exhibit A-1 and Exhibit A-2 to the Indenture filed as Exhibit 4.1)", "filename": "ex4-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/ex4-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "10.1", "exhibit_type": "10", "description": "Form of Subordinated Note Purchase Agreement, dated August 19, 2026, by and among OptimumBank Holding Company and the Purchasers", "filename": "ex10-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/ex10-1.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "10.2", "exhibit_type": "10", "description": "Form of Registration Rights Agreement, dated August 19, 2206, by and among OptimumBank Holding Company and the Purchasers", "filename": "ex10-2.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/ex10-2.htm", "category": "debt", "incorporated_by_reference": false}, {"exhibit_number": "99.1", "exhibit_type": "99", "description": "Investor Presentation", "filename": "ex99-1.htm", "edgar_url": "https://www.sec.gov/Archives/edgar/data/1288855/000149315226039232/ex99-1.htm", "category": "other", "incorporated_by_reference": false}], "sections": [], "tables": [{"table_index": 0, "table_type": "text", "caption": null, "header_text": "Florida001-4244755-0865043"}, {"table_index": 1, "table_type": "text", "caption": null, "header_text": "\u2610Written\n communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)"}, {"table_index": 2, "table_type": "text", "caption": null, "header_text": "Title\n of each class registeredTrading\n Symbol(s)Name\n of exchange on which registered"}, {"table_index": 5, "table_type": "exhibit_index", "caption": null, "header_text": "Exhibit\n NumberExhibit\n NameFiled\n Herewith"}, {"table_index": 7, "table_type": "text", "caption": null, "header_text": "OPTIMUMBANK\n HOLDINGS, INC."}], "exhibits_pending": false, "cdn_html": true, "response_time_ms": 32}