{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-048537","form_type":"8-K","ticker":"MCGA","cik":"0002064658","company_name":"Yorkville Acquisition Corp.","filed_at":"2026-04-24T23:59:59+00:00","discovered_at":"2026-05-14T18:02:33.456878+00:00","generated_at":"2026-05-15T04:17:19.721830+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"CEO Kevin McGurn resigns; CFO Troy Rillo appointed as CEO of Yorkville Acquisition Corp.","bullets":["Kevin McGurn resigned as CEO and director on April 22, 2026, effective immediately; no dispute with company.","Troy Rillo, previously CFO since Aug 2025, appointed as CEO effective April 22, 2026; will continue as CFO.","Rillo is a partner at Yorkville Advisors, affiliate of sponsor; no new compensatory arrangement in connection.","Rillo also serves as Co-CEO of Yorkville Securities LLC and President/CEO of Yorkville America LLC."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-048537","json":"https://secwatch.observer/filing/0001104659-26-048537.json","markdown":"https://secwatch.observer/filing/0001104659-26-048537.md","text":"https://secwatch.observer/filing/0001104659-26-048537.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2064658/000110465926048537/0001104659-26-048537-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2064658/000110465926048537/tm2612660d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T04:17:19.721830+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"}