{"filing":{"accession_number":"0001193125-26-399499","cik":"0001675149","ticker":"AA","company_name":"Alcoa Corp","form":"8-K","filing_date":"2026-09-23","report_date":"2026-09-23","primary_document":"aa-20260923.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1675149/000119312526399499/aa-20260923.htm"},"events":[{"id":34634,"run_id":31874,"accession_number":"0001193125-26-399499","anchor_item_number":"2.03","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"summary":"Alcoa completed a $2.6 billion debt offering on September 23, 2026, consisting of $1.5 billion of 6.625% senior notes due 2034 and $1.1 billion of 6.875% senior notes due 2036, issued by wholly-owned subsidiaries and guaranteed by the parent company. The proceeds are intended to fund the cash portion of the South32 acquisition.","company_name":"Alcoa Corp","ticker":"AA","filing_date":"2026-09-23","form":"8-K","submitted_at":null,"items":[{"id":38417,"accession_number":"0001193125-26-399499","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa completed a $2.6 billion debt offering on September 23, 2026, consisting of $1.5 billion of 6.625% senior notes due 2034 and $1.1 billion of 6.875% senior notes due 2036, issued by wholly-owned subsidiaries and guaranteed by the parent company. The proceeds are intended to fund the cash portion of the South32 acquisition. This is a material creation of direct financial obligations under Item 1.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"","ticker":null,"filing_date":""},{"id":38418,"accession_number":"0001193125-26-399499","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa closed an offering of $2.6 billion in senior notes ($1.5 billion due 2034 at 6.625% and $1.1 billion due 2036 at 6.875%) issued by wholly-owned subsidiaries and guaranteed by Alcoa. The notes represent a new direct financial obligation created to finance the cash portion of the South32 acquisition. This is a classic debt issuance event under Item 2.03.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"","ticker":null,"filing_date":""},{"id":38419,"accession_number":"0001193125-26-399499","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa announced the closing of a $2.6 billion debt offering consisting of senior notes due 2034 and 2036, issued by wholly-owned subsidiaries and guaranteed by Alcoa. The proceeds are being used to finance the cash portion of the South32 acquisition. This is a material creation of direct financial obligations under Item 2.03, though disclosed via Regulation FD in Item 7.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"","ticker":null,"filing_date":""},{"id":38420,"accession_number":"0001193125-26-399499","item_number":"8.01","item_title":"Other Events.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.92,"reasoning":"Alcoa closed a $2.6 billion senior notes offering ($1.5B due 2034 at 6.625% and $1.1B due 2036 at 6.875%) to finance the cash portion of its acquisition of South32's bauxite, alumina, and aluminum assets. The Item 8.01 disclosure centers on the completion of this debt issuance and the concurrent termination of a bridge loan facility. This is a material creation of direct financial obligations by the registrant.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":38417,"accession_number":"0001193125-26-399499","item_number":"1.01","item_title":"Entry into a Material Definitive Agreement.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa completed a $2.6 billion debt offering on September 23, 2026, consisting of $1.5 billion of 6.625% senior notes due 2034 and $1.1 billion of 6.875% senior notes due 2036, issued by wholly-owned subsidiaries and guaranteed by the parent company. The proceeds are intended to fund the cash portion of the South32 acquisition. This is a material creation of direct financial obligations under Item 1.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"Alcoa Corp","ticker":"AA","filing_date":"2026-09-23"},{"id":38418,"accession_number":"0001193125-26-399499","item_number":"2.03","item_title":"Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa closed an offering of $2.6 billion in senior notes ($1.5 billion due 2034 at 6.625% and $1.1 billion due 2036 at 6.875%) issued by wholly-owned subsidiaries and guaranteed by Alcoa. The notes represent a new direct financial obligation created to finance the cash portion of the South32 acquisition. This is a classic debt issuance event under Item 2.03.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"Alcoa Corp","ticker":"AA","filing_date":"2026-09-23"},{"id":38419,"accession_number":"0001193125-26-399499","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Alcoa announced the closing of a $2.6 billion debt offering consisting of senior notes due 2034 and 2036, issued by wholly-owned subsidiaries and guaranteed by Alcoa. The proceeds are being used to finance the cash portion of the South32 acquisition. This is a material creation of direct financial obligations under Item 2.03, though disclosed via Regulation FD in Item 7.01.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"Alcoa Corp","ticker":"AA","filing_date":"2026-09-23"},{"id":38420,"accession_number":"0001193125-26-399499","item_number":"8.01","item_title":"Other Events.","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.92,"reasoning":"Alcoa closed a $2.6 billion senior notes offering ($1.5B due 2034 at 6.625% and $1.1B due 2036 at 6.875%) to finance the cash portion of its acquisition of South32's bauxite, alumina, and aluminum assets. The Item 8.01 disclosure centers on the completion of this debt issuance and the concurrent termination of a bridge loan facility. This is a material creation of direct financial obligations by the registrant.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-23T20:38:03.687536+00:00","company_name":"Alcoa Corp","ticker":"AA","filing_date":"2026-09-23"}]}