{"schema_version":"secwatch.filing_event.v1","accession":"0000950103-25-004583","form_type":"8-K","ticker":"BTC","cik":"0002015034","company_name":"Grayscale Bitcoin Mini Trust ETF","filed_at":"2025-04-09T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.686402+00:00","generated_at":"2026-05-23T18:37:25.898513+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Grayscale Bitcoin Mini Trust appoints Diana Zhang as COO, effective May 6","bullets":["Diana Zhang named COO of Grayscale Operating, LLC (sponsor), effective May 6, 2025; reports to CEO Peter Mintzberg.","Zhang succeeds Hugh Ross, who steps down after four years; Ross remains for transition until May 31, 2025.","Zhang brings 18+ years experience; previously Deputy to co-CEO at Bridgewater, COO at BlockTower Capital."],"urls":{"canonical":"https://secwatch.observer/filing/0000950103-25-004583","json":"https://secwatch.observer/filing/0000950103-25-004583.json","markdown":"https://secwatch.observer/filing/0000950103-25-004583.md","text":"https://secwatch.observer/filing/0000950103-25-004583.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2015034/000095010325004583/0000950103-25-004583-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2015034/000095010325004583/dp227430_8k-btc.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T18:37:25.898513+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":"516d93640a","claim":"Hugh Ross departed as Chief Operating Officer at Grayscale Bitcoin Mini Trust ETF.","evidence_excerpt":"who has decided to step down from his position and is expected to remain with Grayscale to assist with the transition of his responsibilities until his departure on or prior to May 31, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/2015034/000095010325004583/0000950103-25-004583-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"stepped down"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}