{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-022381","form_type":"8-K","ticker":"BIIB","cik":"0000875045","company_name":"BIOGEN INC.","filed_at":"2022-01-31T23:59:59+00:00","discovered_at":"2026-05-14T18:04:10.113741+00:00","generated_at":"2026-06-27T13:53:26.038965+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Biogen announces retirement of directors Nancy Leaming and Brian Posner effective at 2022 annual meeting","bullets":["Nancy Leaming and Brian Posner will retire from Biogen Board effective at the 2022 annual meeting of stockholders.","Both directors have served since 2008; Leaming on Audit Committee, Posner as Chair of Compensation Management and Development Committee.","Retirements are not related to any disagreement with the Board or the Company.","No replacements have been announced yet."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-022381","json":"https://secwatch.observer/filing/0001193125-22-022381.json","markdown":"https://secwatch.observer/filing/0001193125-22-022381.md","text":"https://secwatch.observer/filing/0001193125-22-022381.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/875045/000119312522022381/0001193125-22-022381-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/875045/000119312522022381/d295583d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-27T13:53:26.038965+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":"7ae9fa4c56","claim":"Nancy L. Leaming departed as Director at BIOGEN INC..","evidence_excerpt":"Pursuant to the retirement provisions set forth in the Company’s Corporate Governance Principles, Nancy L. Leaming will also retire from the Board effective as of the Company’s 2022 annual meeting of stockholders.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/875045/000119312522022381/0001193125-22-022381-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"},{"claim_id":"aa72b40f17","claim":"Brian S. Posner departed as Director at BIOGEN INC..","evidence_excerpt":"On January 25, 2022, Brian S. Posner notified Biogen Inc. (the “Company” or “Biogen”) that he will retire from the Biogen Board of Directors (the “Board”) effective as of the Company’s 2022 annual meeting of stockholders.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/875045/000119312522022381/0001193125-22-022381-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}