{"filing":{"accession_number":"0001193125-26-428038","cik":"0000063276","ticker":"MAT","company_name":"MATTEL INC /DE/","form":"8-K","filing_date":"2026-10-21","report_date":"2026-10-21","primary_document":"d111363d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/63276/000119312526428038/d111363d8k.htm"},"events":[{"id":36908,"run_id":34025,"accession_number":"0001193125-26-428038","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"summary":"Mattel appointed Lee Matheson, a Partner at EdgePoint Investment Group (an ~18% shareholder), to its Board of Directors effective October 21, 2026, increasing board size from nine to ten members. The appointment was made pursuant to a cooperation agreement with EdgePoint that includes voting commitments, standstill restrictions, and director replacement rights.","company_name":"MATTEL INC /DE/","ticker":"MAT","filing_date":"2026-10-21","form":"8-K","submitted_at":null,"items":[{"id":41466,"accession_number":"0001193125-26-428038","item_number":"1.01","item_title":null,"event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.65,"reasoning":"The filing discloses entry into a cooperation agreement with EdgePoint Investment Group (an ~18% shareholder) and the appointment of EdgePoint Partner Lee Matheson to Mattel's Board of Directors. While Item 1.01 nominally covers \"Material Definitive Agreements,\" the substance here is a governance event—board appointment coupled with voting commitments, standstill restrictions, and director replacement rights. This is material to investors as it reflects a significant shareholder's influence over board composition and governance, but it does not fit neatly into `exec_appointment` (which typically covers officer/executive roles) or `ma_activity`. The cooperation agreement itself is the material definitive agreement, but the disclosed event is fundamentally a governance arrangement between the company and a major shareholder.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"","ticker":null,"filing_date":""},{"id":41467,"accession_number":"0001193125-26-428038","item_number":"5.02","item_title":null,"event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The Board appointed Lee Matheson, a Partner at EdgePoint Investment Group (an ~18% stockholder), to the Board of Directors effective October 21, 2026, increasing the Board size from nine to ten members. This is a material director appointment tied to a cooperation agreement with a major shareholder, which would affect investor assessment of governance and potential influence over company strategy.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"","ticker":null,"filing_date":""},{"id":41468,"accession_number":"0001193125-26-428038","item_number":"7.01","item_title":null,"event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"The disclosure centers on the appointment of Lee Matheson, a Partner at EdgePoint Investment Group Inc. (an ~18% stockholder), to Mattel's Board of Directors. While the filing also mentions entry into a cooperation agreement with EdgePoint, the principal action disclosed is the director appointment. The appointment of a board member from the company's largest shareholder represents a material governance event affecting board composition and potential shareholder influence.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":41466,"accession_number":"0001193125-26-428038","item_number":"1.01","item_title":null,"event_type":"governance_other","event_domain":"governance","is_material":true,"confidence":0.65,"reasoning":"The filing discloses entry into a cooperation agreement with EdgePoint Investment Group (an ~18% shareholder) and the appointment of EdgePoint Partner Lee Matheson to Mattel's Board of Directors. While Item 1.01 nominally covers \"Material Definitive Agreements,\" the substance here is a governance event—board appointment coupled with voting commitments, standstill restrictions, and director replacement rights. This is material to investors as it reflects a significant shareholder's influence over board composition and governance, but it does not fit neatly into `exec_appointment` (which typically covers officer/executive roles) or `ma_activity`. The cooperation agreement itself is the material definitive agreement, but the disclosed event is fundamentally a governance arrangement between the company and a major shareholder.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"MATTEL INC /DE/","ticker":"MAT","filing_date":"2026-10-21"},{"id":41467,"accession_number":"0001193125-26-428038","item_number":"5.02","item_title":null,"event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The Board appointed Lee Matheson, a Partner at EdgePoint Investment Group (an ~18% stockholder), to the Board of Directors effective October 21, 2026, increasing the Board size from nine to ten members. This is a material director appointment tied to a cooperation agreement with a major shareholder, which would affect investor assessment of governance and potential influence over company strategy.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"MATTEL INC /DE/","ticker":"MAT","filing_date":"2026-10-21"},{"id":41468,"accession_number":"0001193125-26-428038","item_number":"7.01","item_title":null,"event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"The disclosure centers on the appointment of Lee Matheson, a Partner at EdgePoint Investment Group Inc. (an ~18% stockholder), to Mattel's Board of Directors. While the filing also mentions entry into a cooperation agreement with EdgePoint, the principal action disclosed is the director appointment. The appointment of a board member from the company's largest shareholder represents a material governance event affecting board composition and potential shareholder influence.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-10-22T10:02:07.926171+00:00","company_name":"MATTEL INC /DE/","ticker":"MAT","filing_date":"2026-10-21"}]}