Grayscale Bittensor Trust adds Coinbase as additional custodian, terminates prior BitGo agreement

Grayscale Bittensor Trust (TAO)

On September 30, 2026, Grayscale Bittensor Trust (TAO) became party to an amended BitGo Custodial Services Agreement; its prior March 12, 2025 BitGo agreement was terminated.
On September 29, 2026, Sponsor and Coinbase, Inc. amended the Coinbase Prime Broker Agreement to add the Trust; Coinbase will custody a portion of the Trust's TAO.
BitGo remains the Trust's primary custodian; the Sponsor has not determined how much TAO it will move to Coinbase, and Coinbase custody is part of risk management as the Trust grows.
Exhibits 10.1-10.4 include the amended BitGo and Coinbase agreements; Kathryn Masci, Interim CFO of Grayscale Investments Sponsors, LLC, signed on October 5, 2026.

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