{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-342524","form_type":"8-K","ticker":"ANNX","cik":"0001528115","company_name":"Annexon, Inc.","filed_at":"2026-08-10T20:35:51+00:00","discovered_at":"2026-08-10T20:37:00.452771+00:00","generated_at":"2026-08-10T20:37:11.592836+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Annexon appoints Mark Blumenkranz to board; Muneer Satter steps down after 11 years","bullets":["Mark S. Blumenkranz appointed to Annexon board effective Aug 10, 2026, as Class II director with term to 2028 annual meeting.","He joins Audit Committee and Science and Technology Committee; receives $40k annual retainer and 175k-share initial option grant.","Muneer Satter resigned as director and committee roles effective immediately prior to Blumenkranz appointment; no disagreement cited.","Blumenkranz is Stanford emeritus professor; co-founded Adverum, Optimedica, Oculeve, Kedalion; retinal expertise relevant to vonaprument."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-342524","json":"https://secwatch.observer/filing/0001193125-26-342524.json","markdown":"https://secwatch.observer/filing/0001193125-26-342524.md","text":"https://secwatch.observer/filing/0001193125-26-342524.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1528115/000119312526342524/0001193125-26-342524-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1528115/000119312526342524/d130710d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-10T20:37:11.592836+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}