Company: BTC
Filing Date: 2025-09-12
Form Type: 424B3
Source: 0000950170-25-114372
Chunk: 2

Company: Grayscale Bitcoin Mini Trust ETF
Filing Date: 2025-09-12
Form: 424B3
Chunk 2
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 commission has approved or disapproved of the securities offered in this prospectus, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The Shares are neither interests in nor obligations of the Sponsor or the Trustee.

The U.S. dollar value of a Basket of Shares at 4:00 p.m., New York time, on the trade date of a creation or redemption order is equal to the “Basket Amount”, which is the number of Bitcoin required to create or redeem a Basket of Shares, multiplied by the “Index Price,” which is the U.S. dollar value of a Bitcoin derived from the Digital Asset Trading Platforms (as defined herein) that are reflected in the CoinDesk Bitcoin Price Index (XBX) (the “Index”), calculated at 4:00 p.m., New York time, on each business day. The Index Price is calculated using non-GAAP methodology and is not used in the Trust’s financial statements.

The Trust is not a registered investment company under the Investment Company Act of 1940, as amended (the “Investment Company Act”) and is therefore not subject to regulation under the Investment Company Act. Furthermore, the Sponsor believes that the Trust is not a commodity pool for purposes of the Commodity Exchange Act of 1936, as amended (the “CEA”), as administered by the Commodity Futures Trading Commission (the “CFTC”) and that neither the Sponsor nor the Trustee is subject to regulation by the CFTC as a commodity pool operator or a commodity trading advisor. See “Part I—Item 1A. Risk Factors—Risk Factors Related to the Trust and the Shares— Shareholders do not have the protections associated with ownership of shares in an investment company registered under the Investment Company Act or the protections afforded by the CEA” in our Annual Report on Form 10-K for the period ended December 31, 2024.

<div align='center'>The date of this prospectus is September 12, 2025.</div>

table of contents

|                                                                                         | Page |
| Forward-Looking Statements                                                              |   ii |
| Prospectus Summary                                                                      |    1 |
| The Offering                                                                            |    5 |
| Risk Factors                                                                            |   16 |
| Use of Proceeds                                                                         |   26 |
| Description of Shares                                                                   |   27 |
| Description of Creation and Redemption of Shares                                        |   29 |
| Material U.S. Federal Income Tax Consequences                                           |