{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-330981","form_type":"8-K","ticker":"ETHE","cik":"0001725210","company_name":"Grayscale Ethereum Staking ETF","filed_at":"2025-12-23T23:59:59+00:00","discovered_at":"2026-05-14T18:02:40.260911+00:00","generated_at":"2026-05-16T12:16:24.908343+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Grayscale Ethereum Trust ETF adds Bitstamp to CoinDesk Ether Price Index calculation","bullets":["Effective Dec 21, 2025, Bitstamp by Robinhood added to the CoinDesk Ether Price Index (ETX) used for Trust's NAV.","No trading platforms were removed as part of the scheduled quarterly review.","Index now includes Coinbase, Kraken, Crypto.com, LMAX Digital, Gemini, and Bitstamp.","Index Provider may change venues or calculation method at any time; quarterly reviews scheduled."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-330981","json":"https://secwatch.observer/filing/0001193125-25-330981.json","markdown":"https://secwatch.observer/filing/0001193125-25-330981.md","text":"https://secwatch.observer/filing/0001193125-25-330981.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1725210/000119312525330981/0001193125-25-330981-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1725210/000119312525330981/ethe-20251221.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T12:16:24.908343+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"}