{"filing":{"accession_number":"0001193125-26-280733","cik":"0001190935","ticker":"PTY","company_name":"PIMCO CORPORATE \u0026 INCOME OPPORTUNITY FUND","form":"8-K","filing_date":"2026-06-24","report_date":null,"primary_document":"d120429d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1190935/000119312526280733/d120429d8k.htm"},"events":[{"id":13448,"run_id":11947,"accession_number":"0001193125-26-280733","anchor_item_number":"8.01","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"summary":"The Board of Trustees approved a material change to the Fund's 80% investment policy effective August 28, 2026, broadening the definition of eligible investments to include income-producing investments beyond corporate debt obligations. This is a governance event—a board-approved policy amendment affecting the Fund's investment mandate—that would materially affect investor expectations about the Fund's portfolio composition and risk profile. While not a named governance category (such as an executive appointment or auditor change), it clearly falls within governance-related matters requiring board approval and shareholder notification.","company_name":"PIMCO CORPORATE \u0026 INCOME OPPORTUNITY FUND","ticker":"PTY","filing_date":"2026-06-24","form":"8-K","submitted_at":null,"items":[{"id":10589,"accession_number":"0001193125-26-280733","item_number":"8.01","item_title":"Other Events.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"The Board of Trustees approved a material change to the Fund's 80% investment policy effective August 28, 2026, broadening the definition of eligible investments to include income-producing investments beyond corporate debt obligations. This is a governance event—a board-approved policy amendment affecting the Fund's investment mandate—that would materially affect investor expectations about the Fund's portfolio composition and risk profile. While not a named governance category (such as an executive appointment or auditor change), it clearly falls within governance-related matters requiring board approval and shareholder notification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-24T17:26:44.006621+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":10589,"accession_number":"0001193125-26-280733","item_number":"8.01","item_title":"Other Events.","event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"The Board of Trustees approved a material change to the Fund's 80% investment policy effective August 28, 2026, broadening the definition of eligible investments to include income-producing investments beyond corporate debt obligations. This is a governance event—a board-approved policy amendment affecting the Fund's investment mandate—that would materially affect investor expectations about the Fund's portfolio composition and risk profile. While not a named governance category (such as an executive appointment or auditor change), it clearly falls within governance-related matters requiring board approval and shareholder notification.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-24T17:26:44.006621+00:00","company_name":"PIMCO CORPORATE \u0026 INCOME OPPORTUNITY FUND","ticker":"PTY","filing_date":"2026-06-24"}]}