{"url_path":"/sec/cik-0002147219/8-k/2026-09-11/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.**","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-09-11","source_url":"https://www.sec.gov/Archives/edgar/data/2147219/0001104659-26-107095-index.html","accession_number":"0001104659-26-107095","cik":"0002147219","ticker":null,"issuer_name":"Rainier Acquisition Corp","edgar_url":"https://www.sec.gov/Archives/edgar/data/2147219/0001104659-26-107095-index.html","primary_entity_key":"0002147219","primary_entity_name":"Rainier Acquisition Corp"},"word_count":81,"has_tables":true,"body_markdown":"**Item 9.01. Financial Statements and Exhibits.**\n\n** **\n\n(d) Exhibits\n\n \n\n**Exhibit\nNo.**** **\n**Description**\n\n[99.1](tm2625254d1_ex99-1.htm) \n[Press Release, dated September\n11, 2026.](tm2625254d1_ex99-1.htm)\n\n104 \nCover Page Interactive Data\nFile (embedded within the Inline XBRL document).\n\n \n\n \n\n \n\n**SIGNATURE**\n\n \n\nPursuant to the requirements of the Securities\nExchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\n \n\n \n**RAINIER ACQUISITION CORPORATION**\n\n \n \n\nDate: September 11, 2026\nBy:\n/s/\nGbola Amusa\n\n \n \nName:\nGbola Amusa, M.D.,\nCFA\n\n \n \nTitle:\nChief Executive Officer"}