{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-105074","form_type":"8-K","ticker":"BIIB","cik":"0000875045","company_name":"BIOGEN INC.","filed_at":"2023-04-18T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.512378+00:00","generated_at":"2026-06-17T01:05:39.513889+00:00","sec_items":["5.03","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.05,"calibrated_materiality_score":0.05,"confidence":"high","headline":"Biogen amends bylaws to change 'Chairman' title to 'Chair'","bullets":["Board approved Fourth Amended and Restated Bylaws effective April 12, 2023.","Title change from 'Chairman' to 'Chair' adopted in corporate governance documents.","No impact on financial position, operations, or leadership roles beyond nomenclature."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-105074","json":"https://secwatch.observer/filing/0001193125-23-105074.json","markdown":"https://secwatch.observer/filing/0001193125-23-105074.md","text":"https://secwatch.observer/filing/0001193125-23-105074.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/875045/000119312523105074/0001193125-23-105074-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/875045/000119312523105074/d500907d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T01:05:39.513889+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":"5ee83c534fbdcf64112d756775fa22e875383a37","claim":"BIOGEN INC.: Effective April 12, 2023, the Board approved amended bylaws to change the title of 'Chairman' to 'Chair' (effective 2023-04-12).","evidence_excerpt":"Effective April 12, 2023, the Board of Directors of Biogen Inc. (the “Company”) approved the Company’s Fourth Amended and Restated Bylaws, as amended through April 12, 2023 (as so amended, the “Amended Bylaws”), to change the title of “Chairman” to “Chair.”","evidence_source":"SEC 8-K Item 5.03/5.05/5.06","evidence_url":"https://www.sec.gov/Archives/edgar/data/875045/000119312523105074/0001193125-23-105074-index.htm","confidence":0.9,"family_label":"Governance Changes","details":[{"label":"Change","value":"bylaw amendment"},{"label":"Effective","value":"2023-04-12"}],"fact_type":"governance_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}