---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-001116"
form_type: "8-K"
ticker: "ETCG"
cik: "0001705181"
company_name: "Grayscale Ethereum Classic Trust (ETC)"
filed_at: "2025-01-03T23:59:59+00:00"
generated_at: "2026-05-28T14:37:59.139100+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Grayscale Ethereum Classic Trust sponsor reorganized; GSIS becomes sole sponsor after 120 days

## Summary
- GSI merged into GSO on Jan 1, 2025; GSO succeeded to all sponsor rights and obligations.
- GSO assigned sponsor contracts to GSIS; GSIS admitted as additional sponsor.
- GSO will withdraw after 120-day notice; GSIS to be sole remaining sponsor.
- Trust expects no material impact on operations from the reorganization.
- No changes to trust financials, shareholder rights, or custodian arrangements.

## SEC filing metadata
- accession: 0000950170-25-001116
- form_type: 8-K
- ticker: ETCG
- cik: 0001705181
- company_name: Grayscale Ethereum Classic Trust (ETC)
- filed_at: 2025-01-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1705181/000095017025001116/0000950170-25-001116-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1705181/000095017025001116/etcg-20250101.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-001116
- JSON: https://secwatch.observer/filing/0000950170-25-001116.json
- Plain text: https://secwatch.observer/filing/0000950170-25-001116.txt

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