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AI brief of an SEC Form 8-K · iShares Bitcoin Trust ETF (IBIT)

iShares Bitcoin Trust adds Anchorage Digital as second bitcoin custodian

Neutral Impact 2 of 5 product/contract Written later

The Trust's administrative trustee signed a custodial services agreement with Anchorage Digital Bank N.A. on April 7, 2025, adding a second bitcoin custodian alongside Coinbase. The sponsor says it has no current plans to move any bitcoin to Anchorage, and the existing Coinbase arrangement is unaffected.

Key points

  • Agreement dated April 7, 2025, between BlackRock Fund Advisors and Anchorage Digital Bank N.A., a national trust bank chartered by the Office of the Comptroller of the Currency
  • Anchorage must keep the Trust's bitcoin private keys in cold storage and maintain certain insurance policies and coverage
  • The sponsor has no current plans to move any of the Trust's bitcoin to Anchorage; the Trust is not required to hold any set amount at either custodian
  • The Trust must indemnify Anchorage for certain losses tied to the Trust's material breach, violation of law, gross negligence, fraud, or wilful misconduct

The filing

CompanyiShares Bitcoin Trust ETF (IBIT)
Form8-K, current report
Filed with the SECApr 8, 2025, 8:51 AM ET
Accession number0001437749-25-011313

Items reported: 1.01 Material Definitive Agreement

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 11:46 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on April 08, 2025.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.