{"schema_version":"secwatch.filing_event.v1","accession":"0000875045-22-000013","form_type":"8-K","ticker":"BIIB","cik":"0000875045","company_name":"BIOGEN INC.","filed_at":"2022-05-03T23:59:59+00:00","discovered_at":"2026-05-14T18:04:04.051904+00:00","generated_at":"2026-06-26T01:47:39.791978+00:00","sec_items":["2.02","5.02","9.01"],"event_type":"leadership","sentiment":"negative","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Biogen Q1 revenue down 6%, EPS miss; CEO Michel Vounatsos to step down; ADUHELM infrastructure cut","bullets":["Q1 revenue $2.532B (-6% YoY); GAAP EPS $2.06, Non-GAAP EPS $3.62, both impacted by $0.76 ADUHELM write-offs","Company to eliminate most ADUHELM commercial infrastructure after negative Medicare coverage decision","Completed sale of biosimilar JV stake for up to $2.3B in April; reaffirmed 2022 financial guidance","CEO Michel Vounatsos to step down; search for successor underway; he remains CEO during interim period"],"urls":{"canonical":"https://secwatch.observer/filing/0000875045-22-000013","json":"https://secwatch.observer/filing/0000875045-22-000013.json","markdown":"https://secwatch.observer/filing/0000875045-22-000013.md","text":"https://secwatch.observer/filing/0000875045-22-000013.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/875045/000087504522000013/0000875045-22-000013-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/875045/000087504522000013/biib-20220503.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-26T01:47:39.791978+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":"300848f202","claim":"Michel Vounatsos departed as Chief Executive Officer at BIOGEN INC..","evidence_excerpt":"Mr. Vounatsos will remain on the Board of Directors of Biogen until he steps down from his CEO position.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/875045/000087504522000013/0000875045-22-000013-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"stepping down"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}