{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-239037","form_type":"8-K","ticker":"ETHE","cik":"0001725210","company_name":"Grayscale Ethereum Staking ETF","filed_at":"2025-10-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.260516+00:00","generated_at":"2026-05-17T03:55:19.323828+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Grayscale Ethereum Trust ETF sponsor board change: Kummell out, Koster in as director","bullets":["Matthew Kummell stepped down as Director of GSOIH Board on October 13, 2025.","Simon Koster appointed as Director of GSOIH Board effective same date.","Koster is Chief Strategy Officer at Digital Currency Group, managing its investment portfolio.","Koster also serves on boards of Foundry, Luno, Fortitude, and Yuma, all affiliates of Grayscale."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-239037","json":"https://secwatch.observer/filing/0001193125-25-239037.json","markdown":"https://secwatch.observer/filing/0001193125-25-239037.md","text":"https://secwatch.observer/filing/0001193125-25-239037.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1725210/000119312525239037/0001193125-25-239037-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1725210/000119312525239037/ethe-20251013.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T03:55:19.323828+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"}