{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-269480","form_type":"8-K","ticker":"MKSI","cik":"0001049502","company_name":"MKS INC","filed_at":"2024-12-03T23:59:59+00:00","discovered_at":"2026-05-14T18:03:07.494792+00:00","generated_at":"2026-05-29T09:26:19.774397+00:00","sec_items":["5.03","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"MKS Instruments Board adopts bylaw amendments to declassify board by 2028","bullets":["Board declassification phased over three years starting at 2026 annual meeting, fully annual elections by 2028.","Enhanced disclosure and procedural requirements for stockholder nominations and proposals under universal proxy rules.","Other administrative, technical, and clarifying changes incorporated; bylaws effective December 2, 2024."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-269480","json":"https://secwatch.observer/filing/0001193125-24-269480.json","markdown":"https://secwatch.observer/filing/0001193125-24-269480.md","text":"https://secwatch.observer/filing/0001193125-24-269480.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524269480/0001193125-24-269480-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1049502/000119312524269480/d873180d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-29T09:26:19.774397+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":"2d15907149a3b69edd65d32f0f74a3c78ca14d0d","claim":"MKS INC: Amended and restated bylaws to declassify the Board and enhance stockholder nomination procedures (effective 2024-12-02).","evidence_excerpt":"On December 2, 2024, the Board of Directors (the “Board”) of MKS Instruments, Inc. (the “Company”) approved and adopted the Second Amended and Restated By-Laws of the Company (the “Second Amended and Restated 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/1049502/000119312524269480/0001193125-24-269480-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2024-12-02"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}