{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-240523","form_type":"8-K","ticker":"MATV","cik":"0001000623","company_name":"Mativ Holdings, Inc.","filed_at":"2023-09-22T23:59:59+00:00","discovered_at":"2026-05-14T18:03:32.808472+00:00","generated_at":"2026-06-10T09:26:51.072492+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Mativ Holdings amends bylaws to comply with universal proxy rules","bullets":["Stockholder nominating directors must solicit proxies from at least 67% of outstanding shares under Rule 14a-19.","Any stockholder soliciting proxies must use a proxy card color other than white.","Additional information and pre-meeting updates required from stockholders submitting nominations or proposals.","Chairman of stockholder meetings is authorized to adjourn whether or not a quorum is present.","Other conforming, technical, and ministerial changes made effective September 21, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-240523","json":"https://secwatch.observer/filing/0001193125-23-240523.json","markdown":"https://secwatch.observer/filing/0001193125-23-240523.md","text":"https://secwatch.observer/filing/0001193125-23-240523.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1000623/000119312523240523/0001193125-23-240523-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1000623/000119312523240523/d542714d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T09:26:51.072492+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":"094e1c654acb8b91773b6068ac3503a7c00a8b32","claim":"Mativ Holdings, Inc.: Amended and restated By-Laws to comply with universal proxy rules, including stockholder nomination representations, proxy card color requirements, additional information requirements, and meeting adjournment authority (effective 2023-09-21).","evidence_excerpt":"On September 21, 2023, in connection with the universal proxy rules adopted by the U.S. Securities and Exchange Commission and related requirements and a periodic review of the By-Laws (the “By-Laws”) of Mativ Holdings, Inc. (the “Company”), the Board of Directors (the “Board”) of the Company amended and restated the Company’s By-Laws, effective as of the same date.","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/1000623/000119312523240523/0001193125-23-240523-index.htm","confidence":0.95,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-09-21"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}