Company: BTC
Filing Date: 2025-09-08
Form Type: POS AM
Source: 0002015034-25-000003
Chunk: 1

Company: Grayscale Bitcoin Mini Trust ETF
Filing Date: 2025-09-08
Form: POS AM
Chunk 1
---
. 1 to Form S-1 on Form S-3 is being filed by the registrant to (i) convert such Registration Statement on Form S-1 into a Registration Statement on Form S-3 and (ii) include information contained in the registrant’s Annual Report on Form 10-K filed with the SEC on February 28, 2025 and certain other information in such Registration Statement. No additional securities are being registered under this Pre-Effective Amendment No. 1 to Post-Effective Amendment No. 1.

<div align='center'>SUBJECT TO COMPLETION, DATED SEPTEMBER 5, 2025</div>

PRELIMINARY PROSPECTUS

<div align='center'>Grayscale Bitcoin Mini Trust ETF</div>

Grayscale Bitcoin Mini Trust ETF (the “Trust”) (formerly Grayscale Bitcoin Mini Trust (BTC)) is a Delaware statutory trust that issues common units of fractional undivided beneficial interest (“Shares”), which represent ownership in the Trust. The Trust’s purpose is to hold Bitcoin, which are digital assets that are created and transmitted through the operations of the peer-to-peer Bitcoin Network, a decentralized network of computers that operates on cryptographic protocols. The Trust’s investment objective is for the value of the Shares (based on Bitcoin per Share) to reflect the value of Bitcoin held by the Trust, as determined by reference to the Index Price (as defined herein), less the Trust’s expenses and other liabilities. While an investment in the Shares is not a direct investment in Bitcoin, the Shares are designed to provide investors with a cost-effective and convenient way to gain investment exposure to Bitcoin. Grayscale Investments Sponsors, LLC is the sponsor of the Trust (the “Sponsor”), CSC Delaware Trust Company is the trustee of the Trust (the “Trustee”), The Bank of New York Mellon is the transfer agent of the Trust (in such capacity, the “Transfer Agent”) and the administrator of the Trust (in such capacity, the “Administrator”), Continental Stock Transfer & Trust Company is the co-transfer agent of the Trust (the “Co-Transfer Agent”), Coinbase, Inc. is the prime broker of the Trust (the “Prime Broker”) and Coinbase Custody Trust Company, LLC is the custodian of the Trust (the “Custodian”).

The Shares are listed on NYSE Arca, Inc. (“NYSE Arca”) under the symbol “BTC.” The Trust intends to issue Shares on a continuous basis and is registering an indeterminate number of Shares. It is expected