---
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"
generated_at: "2026-05-16T12:16:24.908343+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Grayscale Ethereum Trust ETF adds Bitstamp to CoinDesk Ether Price Index calculation

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 8.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-330981
- JSON: https://secwatch.observer/filing/0001193125-25-330981.json
- Plain text: https://secwatch.observer/filing/0001193125-25-330981.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.