{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-068794","form_type":"8-K","ticker":"ASMB","cik":"0001426800","company_name":"ASSEMBLY BIOSCIENCES, INC.","filed_at":"2023-12-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:29.037164+00:00","generated_at":"2026-06-07T16:06:17.474909+00:00","sec_items":["5.02","8.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Assembly Bio appoints Gilead's Cihlar to board and moves HQ to South San Francisco","bullets":["Appointed Tomas Cihlar, Ph.D., Gilead's SVP of Virology, to the Board effective December 7, 2023, per Investor Rights Agreement.","Dr. Cihlar will not receive compensation for his Board service.","Corporate headquarters relocated to Two Tower Place, 7th Floor, South San Francisco, CA 94080 effective December 1, 2023.","The appointment stems from the October 15, 2023 Investor Rights Agreement with Gilead."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-068794","json":"https://secwatch.observer/filing/0000950170-23-068794.json","markdown":"https://secwatch.observer/filing/0000950170-23-068794.md","text":"https://secwatch.observer/filing/0000950170-23-068794.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023068794/0000950170-23-068794-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023068794/asmb-20231201.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T16:06:17.474909+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":"8f4b2591fd","claim":"Tomas Cihlar was appointed as Board Member at ASSEMBLY BIOSCIENCES, INC..","evidence_excerpt":"On December 7, 2023, the Board of Directors (the \"Board\") of Assembly Biosciences, Inc. (the \"Company\") appointed Tomas Cihlar, Ph.D., a designee of Gilead Sciences, Inc. (\"Gilead\"), to serve on the Board.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023068794/0000950170-23-068794-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Board Member"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}