{"url_path":"/sec/keyy/8-k/2026-06-18/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":"2026-06-18","source_url":"https://www.sec.gov/Archives/edgar/data/2102771/0001213900-26-069960-index.html","accession_number":"0001213900-26-069960","cik":"0002102771","ticker":"KEYY","issuer_name":"Keystone Acquisition Corp.","edgar_url":"https://www.sec.gov/Archives/edgar/data/2102771/0001213900-26-069960-index.html","primary_entity_key":"0002102771","primary_entity_name":"Keystone Acquisition Corp."},"word_count":83,"has_tables":true,"body_markdown":"** **\n\n**Item 9.01 Financial Statements and Exhibits.**\n\n \n\n(d) Exhibits\n\n \n\n**EXHIBIT INDEX**\n\n** **\n\n**Exhibit No.**\n \n**Description**\n\n99.1\n \n[Press Release, dated June 18, 2026](ea029529001ex99-1.htm)\n\n104\n \nCover Page Interactive Data File (embedded within the Inline XBRL document).\n\n \n\n1\n\n \n\n \n\n**SIGNATURE**\n\n \n\nPursuant to the requirements\nof the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto\nduly authorized.\n\n \n\n \n**KEYSTONE ACQUISITION CORP.**\n\n \n \n \n \n\n \nBy:\n/s/ Richard Chin\n\n \n \nName:\nRichard Chin\n\n \n \nTitle:\nChief Executive Officer\n\n \n \n \n \n\nDated: June 18, 2026\n \n \n \n\n \n\n2"}