Grayscale Ethereum Mini Trust ETF Index Price Calculation Updated

Summary

On December 21, 2025, CoinDesk Indices, Inc. announced an update to the Digital Asset Trading Platforms used for calculating the Ether Price Index (ETX) for Grayscale Ethereum Mini Trust ETF. Bitstamp by Robinhood was added to the list of platforms due to meeting the Index Provider's minimum liquidity requirement, while no platforms were removed. This update reflects the Index Provider's ongoing efforts to ensure the Index accurately represents the digital asset market, as outlined in the Trust's Annual Report on Form 10-K.