{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-039043","form_type":"8-K","ticker":"ASMB","cik":"0001426800","company_name":"ASSEMBLY BIOSCIENCES, INC.","filed_at":"2023-08-07T23:59:59+00:00","discovered_at":"2026-05-14T18:03:33.893088+00:00","generated_at":"2026-06-12T04:01:55.504349+00:00","sec_items":["1.01","2.03"],"event_type":"other","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Assembly Biosciences subleases ~20K sq ft HQ in South San Francisco for 24 months","bullets":["Sublease with Arsenal Biosciences for 2 Tower Place, 7th Floor, South San Francisco; term begins Nov 1, 2023 or later.","Monthly base rent: $109,906.50 for months 1-12; $113,753.23 for months 13-24.","Security deposit of $219,813 required; Company pays share of operating expenses, taxes, utilities.","Option to extend through balance of sublessor's master lease; rent capped at $6.25/sq ft with 3.5% annual increases."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-039043","json":"https://secwatch.observer/filing/0000950170-23-039043.json","markdown":"https://secwatch.observer/filing/0000950170-23-039043.md","text":"https://secwatch.observer/filing/0000950170-23-039043.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023039043/0000950170-23-039043-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023039043/asmb-20230804.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-12T04:01:55.504349+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":"7ae8e55ca59e8d5183b26ad4b30c8af46bf8dd85","claim":"ASSEMBLY BIOSCIENCES, INC. entered into Sublease with Arsenal Biosciences, Inc. valued at Monthly base rent of $109,906.50 for months 1-12 and $113,753.23 for months 13-24; security deposit (effective 2023-08-04).","evidence_excerpt":"On August 4, 2023, Assembly Biosciences, Inc. (the “Company”) and Arsenal Biosciences, Inc. (the \"Sublessor\") entered into a Sublease for the Company’s lease of approximately 20,000 square feet of office and laboratory space (the \"Sublease\"), which will serve as the Company's corporate headquarters, located at 2 Tower Place, 7th Floor, South San Francisco, California (the \"Premises\").","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1426800/000095017023039043/0000950170-23-039043-index.htm","confidence":0.95,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"lease"},{"label":"Counterparty","value":"Arsenal Biosciences, Inc."},{"label":"Value","value":"Monthly base rent of $109,906.50 for months 1-12 and $113,753.23 for months 13-24; security deposit"},{"label":"Effective","value":"2023-08-04"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}