---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-239046"
form_type: "8-K"
ticker: "ETCG"
cik: "0001705181"
company_name: "Grayscale Ethereum Classic Trust (ETC)"
filed_at: "2025-10-14T23:59:59+00:00"
generated_at: "2026-05-17T03:54:55.905133+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Grayscale Ethereum Classic Trust's sponsor board changes: Kummell out, Koster in

## Summary
- Matthew Kummell stepped down as a Director of GSO Intermediate Holdings Corp., the top entity in sponsor's governance chain.
- Simon Koster appointed as Director of GSOIH; he is CSO at Digital Currency Group, Inc. (DCG).
- Koster also serves on boards of Foundry, Luno, Fortitude, and Yuma, all Grayscale affiliates.
- Change effective October 13, 2025; no impact on trust operations or financials disclosed.

## SEC filing metadata
- accession: 0001193125-25-239046
- form_type: 8-K
- ticker: ETCG
- cik: 0001705181
- company_name: Grayscale Ethereum Classic Trust (ETC)
- filed_at: 2025-10-14T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1705181/000119312525239046/0001193125-25-239046-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1705181/000119312525239046/etcg-20251013.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-239046
- JSON: https://secwatch.observer/filing/0001193125-25-239046.json
- Plain text: https://secwatch.observer/filing/0001193125-25-239046.txt

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