---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-105831"
form_type: "8-K"
ticker: "ETHE"
cik: "0001725210"
company_name: "Grayscale Ethereum Staking ETF"
filed_at: "2025-08-08T23:59:59+00:00"
generated_at: "2026-05-17T16:41:37.707311+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Grayscale Ethereum Trust adds Anchorage Digital as second Ether custodian; Coinbase remains primary

## Summary
- Trust entered custodial agreement with Anchorage Digital Bank on Aug 8, 2025, to custody a portion of its Ether holdings.
- Anchorage will hold private keys in cold storage; Coinbase remains primary custodian, unchanged.
- Sponsor has not yet determined amount of Ether to move; addition reflects risk management for growing trust size.
- Agreement also covers Grayscale Bitcoin Trust ETF (GBTC) as a client under same master custody agreement.
- Anchorage Digital is a national trust bank chartered by OCC; provides custody and safekeeping services.

## SEC filing metadata
- accession: 0000950170-25-105831
- form_type: 8-K
- ticker: ETHE
- cik: 0001725210
- company_name: Grayscale Ethereum Staking ETF
- filed_at: 2025-08-08T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1725210/000095017025105831/0000950170-25-105831-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1725210/000095017025105831/ethe-20250808.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-105831
- JSON: https://secwatch.observer/filing/0000950170-25-105831.json
- Plain text: https://secwatch.observer/filing/0000950170-25-105831.txt

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