Grayscale Avalanche Staking ETF: adds Anchorage Digital as custodian

What happened

• The filing reports that on Sep 29, 2026, Grayscale Investments Sponsors, LLC, on behalf of Grayscale Avalanche Staking ETF (the Trust), entered into the 6th Amendment to the Master Custody Service Agreement, pursuant to which the Trust became a party to the Anchorage Digital Custodian Agreement.
• Under that agreement, Anchorage Digital Bank N.A. will provide custody and safekeeping services for a portion of the Trust’s AVAX.

Key details

• Coinbase Custody Trust Company, LLC remains the Trust’s primary custodian; the Sponsor will decide amounts held at each custodian and has not yet determined how much AVAX will move to Anchorage Digital.
• Fees paid to the additional custodian are a Sponsor-paid Expense; upon Sponsor instruction Anchorage Digital will withdraw AVAX to pay the Trust’s Sponsor's Fee and any Additional Trust Expenses per the prospectus procedures.
• Anchorage Digital will generate and retain private keys for storage; the hardware security module used to safeguard keys is located in the United States.
• The agreement permits Anchorage Digital to temporarily suspend services in the event of a fork of the Avalanche blockchain and to decide whether to support either branch; Anchorage Digital is required to maintain insurance including commercial crime insurance or a fidelity bond with limits of not less than $100,000,000 in the aggregate.

Why it may matter

• Item 1.01 was reported: entry into a material definitive agreement adding an additional custodian for the Trust’s AVAX holdings. The filing describes custody procedures, fee allocation, key custody, fork handling and insurance requirements.
• The filing does not show why the company acted.