{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-239051","form_type":"8-K","ticker":"HZEN","cik":"0001748945","company_name":"Grayscale Horizen Trust (ZEN)","filed_at":"2025-10-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.336479+00:00","generated_at":"2026-05-17T03:56:31.496234+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Grayscale parent GSOIH: Matthew Kummell resigns, Simon Koster appointed director","bullets":["Matthew Kummell stepped down as director of GSOIH, the sole managing member of Grayscale Operating, effective Oct 13, 2025.","Simon Koster appointed director of GSOIH; he is CSO of Digital Currency Group, managing a portfolio of 250+ early-stage firms.","Koster also serves on boards of Foundry, Luno (since 2023), Fortitude (2024), and Yuma (2025), all Grayscale affiliates.","No reason given for Kummell's departure; Koster's appointment approved by GSOIH on the same date."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-239051","json":"https://secwatch.observer/filing/0001193125-25-239051.json","markdown":"https://secwatch.observer/filing/0001193125-25-239051.md","text":"https://secwatch.observer/filing/0001193125-25-239051.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1748945/000119312525239051/0001193125-25-239051-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1748945/000119312525239051/hzen-20251013.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T03:56:31.496234+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"}