{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-23-032368","form_type":"8-K","ticker":"MAT","cik":"0000063276","company_name":"MATTEL INC /DE/","filed_at":"2023-09-15T23:59:59+00:00","discovered_at":"2026-05-14T18:03:36.406486+00:00","generated_at":"2026-06-10T16:54:09.034429+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Mattel amends bylaws to update shareholder nomination and proposal procedures","bullets":["Board approved amendments to Amended and Restated Bylaws effective Sept 14, 2023.","New procedural and disclosure requirements for director nominations and other business proposals by stockholders.","Stockholders must disclose certain equity-related financial transactions; proxy cards must be non-white.","Amendments conform to Delaware law changes on electronic transmission of notices and in-person stock voting.","Non-compliance or materially inaccurate disclosure will cause nominations/proposals to be disregarded."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-23-032368","json":"https://secwatch.observer/filing/0001628280-23-032368.json","markdown":"https://secwatch.observer/filing/0001628280-23-032368.md","text":"https://secwatch.observer/filing/0001628280-23-032368.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/63276/000162828023032368/0001628280-23-032368-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/63276/000162828023032368/mat-20230914.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T16:54:09.034429+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":[{"claim_id":"6379daacd5084ac67f10487f0a582d6ed51aa577","claim":"MATTEL INC /DE/: Amended Bylaws to update procedural and disclosure requirements for stockholder nominations and proposals, and to reflect Delaware law changes on electronic transmission and in-person voting (effective 2023-09-14).","evidence_excerpt":"On September 14, 2023, the Board of Directors (the “Board”) of Mattel, Inc. (the “Company”) approved amendments to the Company’s Amended and Restated Bylaws (the “Bylaws”), which became effective immediately.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/63276/000162828023032368/0001628280-23-032368-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-09-14"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}