secwatch.observer — SEC 8-K summary
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Issuer:     Grayscale Bitcoin Trust ETF (GBTC)
CIK:        0001588489
Form:       8-K
Filed at:   2025-10-09T23:59:59+00:00
Accession:  0001193125-25-236072
Event type: other_material
Sentiment:  neutral
Materiality: 0.35
Item codes: 1.01, 1.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Grayscale Bitcoin Trust enters new prime broker and admin agreements with Coinbase and BNY Mellon
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- On Oct 3, 2025, signed new Prime Broker Agreement with Coinbase, Inc., Coinbase Custody, and Coinbase Credit.
- On Oct 9, 2025, BNY Mellon became fund administrator under a new Fund Administration and Accounting Agreement.
- Previous prime broker agreement (Dec 29, 2023) and prior BNY admin agreement (Feb 26, 2024) were terminated on the respective effective dates.
- Coinbase Custody remains custodian; BNY continues providing admin/accounting services under new terms.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1588489/000119312525236072/0001193125-25-236072-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1588489/000119312525236072/gbtc-20251003.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-236072

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