---
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"
generated_at: "2026-05-17T03:59:54.788488+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Grayscale Ethereum Mini Trust ETF sponsor appoints Simon Koster to board; Kummell departs

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.02
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-239043
- JSON: https://secwatch.observer/filing/0001193125-25-239043.json
- Plain text: https://secwatch.observer/filing/0001193125-25-239043.txt

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