{"url_path":"/sec/pty/8-k/2026-06-24/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":"2026-06-24","source_url":"https://www.sec.gov/Archives/edgar/data/1190935/0001193125-26-280733-index.html","accession_number":"0001193125-26-280733","cik":"0001190935","ticker":"PTY","issuer_name":"PIMCO CORPORATE & INCOME OPPORTUNITY FUND","edgar_url":"https://www.sec.gov/Archives/edgar/data/1190935/0001193125-26-280733-index.html","primary_entity_key":"0001190935","primary_entity_name":"PIMCO CORPORATE & INCOME OPPORTUNITY FUND"},"word_count":82,"has_tables":true,"body_markdown":"Item 9.01 Financial Statements and Exhibits.\n\n \n\n(d)\n  \nExhibits\n\n99.1\n  \n[Supplement, dated June 24, 2026](d120429dex991.htm)\n\n104\n  \nCover Page Interactive Data File (embedded within the Inline XBRL document)\n\nSIGNATURE\n\nPursuant to the requirements of the Securities Exchange 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\nPIMCO Corporate & Income Opportunity Fund\n\nBy:\n \n\n/s/ Ryan G. Leshaw\n\nName:\n \nRyan G. Leshaw\n\nTitle:\n \nChief Legal Officer and Secretary\n\nDate: June 24, 2026"}