{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-036399","form_type":"8-K","ticker":"ANNX","cik":"0001528115","company_name":"Annexon, Inc.","filed_at":"2024-03-26T23:59:59+00:00","discovered_at":"2026-05-14T18:03:24.504771+00:00","generated_at":"2026-06-04T07:50:24.953888+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Annexon reports Q4 2023 net loss $27.9M; cash $259.7M; Phase 3 GBS data Q2 2024","bullets":["Net loss for FY2023 $134.2M vs $141.9M in prior year; R&D spend $113.8M.","Cash and short-term investments $259.7M as of Dec 31, 2023; runway into mid-2026.","Phase 3 ANX005 GBS topline data expected Q2 2024; BLA submission supported by RWE from IGOS.","Phase 3 ANX007 GA ARCHER II trial (sham-controlled) to initiate mid-2024; ARROW head-to-head vs SYFOVRE planned H2 2024.","Completed $125M financing in December 2023 extending operating runway."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-036399","json":"https://secwatch.observer/filing/0000950170-24-036399.json","markdown":"https://secwatch.observer/filing/0000950170-24-036399.md","text":"https://secwatch.observer/filing/0000950170-24-036399.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1528115/000095017024036399/0000950170-24-036399-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1528115/000095017024036399/annx-20240326.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-04T07:50:24.953888+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":"8f21787b1fe515f8c39ca5d9ba3744040c5a3a88","claim":"Annexon, Inc. reported financial results for fourth quarter and the year ended December 31, 2023.","evidence_excerpt":"On March 26, 2024, Annexon, Inc. (the “Company”) announced certain financial results for the fourth quarter and the year ended December 31, 2023.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1528115/000095017024036399/0000950170-24-036399-index.htm","confidence":0.9,"family_label":"Earnings Releases","details":[{"label":"Period","value":"fourth quarter and the year ended December 31, 2023"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}