{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-26-001570","form_type":"8-K","ticker":"ABPO","cik":"0001893219","company_name":"Abpro Holdings, Inc.","filed_at":"2026-01-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.695777+00:00","generated_at":"2026-05-16T11:33:57.678805+00:00","sec_items":["7.01","9.01"],"event_type":"regulatory","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Abpro and Celltrion announce FDA IND clearance for lead multispecific antibody ABP-102 / CT-P72","bullets":["FDA cleared IND for ABP-102 / CT-P72, a multispecific HER2 × CD3 T-cell engager targeting HER2-positive solid tumors.","Phase 1 clinical trial anticipated to commence in H1 2026, led by Celltrion under co-development collaboration.","Preclinical data showed selective antitumor activity in HER2-high models and was well tolerated in NHP studies up to 80 mg/kg.","Candidate designed to enhance tumor selectivity and limit activity in HER2-low tissues, aiming to reduce cytokine release syndrome risk."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-26-001570","json":"https://secwatch.observer/filing/0001213900-26-001570.json","markdown":"https://secwatch.observer/filing/0001213900-26-001570.md","text":"https://secwatch.observer/filing/0001213900-26-001570.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1893219/000121390026001570/0001213900-26-001570-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1893219/000121390026001570/ea0271844-8k_abpro.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T11:33:57.678805+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"}