{"schema_version":"secwatch.filing_event.v1","accession":"0001829126-26-002413","form_type":"8-K","ticker":"BKHA","cik":"0002000775","company_name":"Black Hawk Acquisition Corp","filed_at":"2026-03-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.967844+00:00","generated_at":"2026-05-15T11:03:41.046030+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Vesicor Therapeutics appoints Michael Tolentino as CEO; Luo Feng becomes CSO","bullets":["Michael Tolentino, M.D., appointed CEO of Vesicor Therapeutics, the de-SPAC target of Black Hawk Acquisition (Nasdaq: BKHA, BKHAU, BKHAR), effective March 17, 2026.","Tolentino succeeds founder Luo Feng, who becomes Chief Scientific Officer; Tolentino brings 20+ years biotech experience including inventing Avastin and co-founding Aviceda ($207.5M Series C).","Employment agreement: 3-year term, $48k base salary (subject to increase if Vesicor raises $5M), severance of 2x salary plus bonus, non-compete for 1 year post-termination.","Tolentino aims to accelerate IND-enabling studies and FDA submission for Vesicor's p53-based cancer therapeutics developed with precision-engineered microvesicles.","Tolentino also serves as co-founder/CEO of Avdarna Therapeutics and co-founder/CDO of Aikium; he previously led Acuity Pharmaceuticals (merged into OPKO Health)."],"urls":{"canonical":"https://secwatch.observer/filing/0001829126-26-002413","json":"https://secwatch.observer/filing/0001829126-26-002413.json","markdown":"https://secwatch.observer/filing/0001829126-26-002413.md","text":"https://secwatch.observer/filing/0001829126-26-002413.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2000775/000182912626002413/0001829126-26-002413-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2000775/000182912626002413/blackhawkacq_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T11:03:41.046030+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"}