{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-428038","form_type":"8-K","ticker":"MAT","cik":"0000063276","company_name":"MATTEL INC /DE/","filed_at":"2026-10-21T21:57:58+00:00","discovered_at":"2026-10-22T10:05:00.257006+00:00","generated_at":"2026-10-22T10:06:32.358802+00:00","sec_items":["1.01","5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Mattel adds EdgePoint partner Lee Matheson to board under cooperation pact; board grows to 10","bullets":["EdgePoint Investment Group, an approximately 18% Mattel stockholder, signed a cooperation agreement dated October 21, 2026; EdgePoint Partner Lee Matheson joins the board.","Board expanded from nine to ten directors; Matheson's term expires at the 2027 annual meeting, and Mattel agreed to nominate him for re-election there.","EdgePoint received director replacement rights: the parties will jointly pick a mutually acceptable successor if Matheson leaves before the 2028 annual meeting.","Mattel's appointment and nomination obligations terminate if EdgePoint's stake drops below 10% of outstanding common stock.","Pact runs until five business days after the later of the day after the 2027 annual meeting and Matheson's board departure; includes standstill, voting and confidentiality terms."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-428038","json":"https://secwatch.observer/filing/0001193125-26-428038.json","markdown":"https://secwatch.observer/filing/0001193125-26-428038.md","text":"https://secwatch.observer/filing/0001193125-26-428038.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/63276/000119312526428038/0001193125-26-428038-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/63276/000119312526428038/d111363d8k.htm"},"model":{"generated_by":"deepseek-v4.1-flash:cloud@v2","generated_at":"2026-10-22T10:06:32.358802+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}