secwatch.observer — SEC 8-K summary
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Issuer:     Grayscale Ethereum Classic Trust (ETC) (ETCG)
CIK:        0001705181
Form:       8-K
Filed at:   2026-08-27T20:06:02+00:00
Accession:  0001193125-26-371263
Event type: other_material
Sentiment:  neutral
Materiality: 0.30
Item codes: 8.01
LLM model:  deepseek-v4-flash:cloud@v2

Grayscale Ethereum Classic Trust to adopt new CoinDesk benchmark index for NAV from Sept 1, 2026
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- Effective Sept 1, 2026, NAV uses CoinDesk Ethereum Classic Benchmark Extended Rate, replacing Price Index.
- New index methodology includes volume weighting, outlier detection, inactivity adjustments, and manipulation resistance.
- Index provider can adjust methodology without consent; sponsor may use cascading fallback indices if unavailable.
- Change affects only NAV calculation; underlying ETC holdings and operational structure remain unchanged.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1705181/000119312526371263/0001193125-26-371263-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1705181/000119312526371263/etcg-20260827.htm
  HTML page:      https://secwatch.observer/filing/0001193125-26-371263

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer