{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-239043","form_type":"8-K","ticker":"ETH","cik":"0002020455","company_name":"Grayscale Ethereum Staking Mini ETF","filed_at":"2025-10-14T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.337212+00:00","generated_at":"2026-05-17T03:59:54.788488+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.15,"calibrated_materiality_score":0.15,"confidence":"high","headline":"Grayscale Ethereum Mini Trust ETF sponsor appoints Simon Koster to board; Kummell departs","bullets":["Matthew Kummell resigned as Director of GSOIH, effective October 13, 2025.","Simon Koster appointed as Director of GSOIH, the managing member of Grayscale's sponsor entity.","Koster is Chief Strategy Officer of Digital Currency Group (DCG) and manages its investment portfolio.","He also serves on boards of Foundry, Luno, Fortitude, and Yuma, all Grayscale affiliates."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-239043","json":"https://secwatch.observer/filing/0001193125-25-239043.json","markdown":"https://secwatch.observer/filing/0001193125-25-239043.md","text":"https://secwatch.observer/filing/0001193125-25-239043.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2020455/000119312525239043/0001193125-25-239043-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2020455/000119312525239043/eth-20251013.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T03:59:54.788488+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"}