---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-124064"
form_type: "8-K"
ticker: "ZCSH"
cik: "0001720265"
company_name: "Grayscale Zcash Trust (ZEC)"
filed_at: "2026-03-25T23:59:59+00:00"
generated_at: "2026-05-15T09:02:18.751420+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Grayscale Zcash Trust to switch ZEC valuation index to CoinDesk Zcash Benchmark Rate effective April 1, 2026

## Summary
- Effective April 1, 2026, Trust will value ZEC using CoinDesk Zcash Benchmark Rate instead of CoinDesk Zcash Price Index (ZCX).
- Constituent trading platforms for new benchmark: Binance, Gemini, Kraken, OKX.
- New index uses volume-weighted real-time price with outlier detection, inactivity adjustment, and manipulation resistance.
- If benchmark is unavailable, cascading fallback: Coin Metrics Real-Time Rate, principal market price, then Sponsor's best judgment.
- Shareholders will be notified of material methodology changes in periodic or current reports.

## SEC filing metadata
- accession: 0001193125-26-124064
- form_type: 8-K
- ticker: ZCSH
- cik: 0001720265
- company_name: Grayscale Zcash Trust (ZEC)
- filed_at: 2026-03-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1720265/000119312526124064/0001193125-26-124064-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1720265/000119312526124064/zcsh-20260325.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-124064
- JSON: https://secwatch.observer/filing/0001193125-26-124064.json
- Plain text: https://secwatch.observer/filing/0001193125-26-124064.txt

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