{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-239011","form_type":"8-K","ticker":"ZCSH","cik":"0001720265","company_name":"Grayscale Zcash Trust (ZEC)","filed_at":"2025-10-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.248510+00:00","generated_at":"2026-05-17T03:55:15.532013+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Grayscale Zcash Trust sponsor appoints Simon Koster as Director, replacing Matthew Kummell","bullets":["Matthew Kummell stepped down as Director of GSOIH, the sole managing member of Grayscale Operating, LLC, effective October 13, 2025.","Simon Koster appointed as Director of GSOIH on October 13, 2025; Koster is Chief Strategy Officer at Digital Currency Group (DCG).","Koster manages DCG's portfolio of digital assets and over 250 early-stage companies globally.","Koster has served on boards of Foundry and Luno since 2023, Fortitude since 2024, and Yuma since 2025, all affiliated with Grayscale."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-239011","json":"https://secwatch.observer/filing/0001193125-25-239011.json","markdown":"https://secwatch.observer/filing/0001193125-25-239011.md","text":"https://secwatch.observer/filing/0001193125-25-239011.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1720265/000119312525239011/0001193125-25-239011-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1720265/000119312525239011/zcsh-20251013.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T03:55:15.532013+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"}