BTC

Investing involves risk, including possible loss of principal. An investment in the Trust is subject to a high degree of risk and heightened volatility. Digital assets are not suitable for an investor that cannot afford the loss of the entire investment.

The Grayscale Bitcoin Mini Trust ETF has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents the Fund has filed with the SEC for more complete information about the Fund and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the Fund or any authorized participant will arrange to send you the prospectus (when available) if you request it by calling (833)903-2211 or by contacting Foreside Fund Services, LLC, Three Canal Plaza, Suite 100, Portland, Maine 04101.

Foreside Fund Services, LLC is the Marketing Agent for BTC.

Grayscale Investments Sponsors, LLC (“Grayscale”) is the sponsor of Grayscale Bitcoin Mini Trust ETF. Grayscale is not registered as an investment adviser under the Investment Advisers Act of 1940 and the Trust is not registered under the Investment Company Act of 1940. The Trust is subject to the rules and regulations of the Securities Act of 1933.

The Trust holds Bitcoin; however, an investment in the Trust is not a direct investment in Bitcoin. As a non-diversified and single industry fund, the value of the shares may fluctuate more than shares invested in a broader range of industries.

There is no guarantee that a market for the shares will be available which will adversely impact the liquidity of the Trust. The value of the Trust relates directly to the value of the underlying digital asset, the value of which may be highly volatile and subject to fluctuations due to a number of factors.

The Trust relies on third party service providers to perform certain functions essential to the affairs of the funds and the replacement of such service providers could pose a challenge to the safekeeping of the digital asset and to the operations of the Trust.

NAV per Share is not calculated in accordance with GAAP. NAV per Share is not intended to be a substitute for the Trust's Principal Market NAV per Share calculated in accordance with GAAP.

Digital Asset Risk Disclosures

Extreme volatility of trading prices that many digital assets have experienced in recent periods and may continue to experience, could have a material adverse effect on the value of the Trust and the shares could lose all or substantially all of their value.

Digital assets represent a new and rapidly evolving industry. The value of the Trust depends on the acceptance of the digital assets, the capabilities and development of blockchain technologies and the fundamental investment characteristics of the digital asset.

Digital asset networks are developed by a diverse set of contributors and the perception that certain high-profile contributors will no longer contribute to the network could have an adverse effect on the market price of the related digital asset.

Digital assets may have concentrated ownership and large sales or distributions by holders of such digital assets could have an adverse effect on the market price of such digital assets.

The value of the Trust relates directly to the value of the underlying digital asset, the value of which may be highly volatile and subject to fluctuations due to a number of factors.

A substantial direct investment in digital assets may require expensive and sometimes complicated arrangements in connection with the acquisition, security and safekeeping of the digital asset and may involve the payment of substantial acquisition fees from third party facilitators through cash payments of U.S. dollars. Because the value of the Trust is correlated with the value of Bitcoin, it is important to understand the investment attributes of, and the market for the underlying digital asset. Please consult with your financial professional.

The Sponsor does not store, hold, or maintain custody or control of the Trust’s digital assets but instead has entered into the Custodian Agreement with a third party to facilitate the security of its digital assets. The Custodian controls and secures the Trust’s digital asset accounts, a segregated custody account to store private keys, which allow for the transfer of ownership or control of the digital asset, on the Trust’s behalf. If the Custodian resigns or is removed by the Sponsor or otherwise, without replacement, it could trigger early termination of the Trust.

There is no guarantee that a market for the shares will be available which will adversely impact the liquidity of the Trust. The value of the Trust relates directly to the value of the underlying digital asset, the value of which may be highly volatile and subject to fluctuations due to a number of factors.

© 2025 Grayscale. All trademarks, service marks and/or trade names (e.g., G®, GRAYSCALE®, GRAYSCALE CRYPTO SECTORS™, INVEST IN YOUR SHARE OF THE FUTURE ®, and GRAYSCALE INVESTMENTS®) are owned and/or registered by Grayscale.

All of the content on our site - including text, software, scripts, code, designs, graphics, photos, sounds, music, videos, applications, interactive features, articles, news stories, sketches, animations, stickers, general artwork and other content ("Content") - is owned by Grayscale or others we license Content from, and is protected by copyright, patent and other laws.

Grayscale reserves all rights not expressly described herein.

COINDESK® and the Fund's applicable reference rate (the "Index") are trade or service marks of CoinDesk Indices, Inc. (with its affiliates, including CC Data Limited, “CDI”), and/or its licensors. CDI or CDI's licensors own all proprietary rights in the Index. CDI is not affiliated with Grayscale and does not approve, endorse, review, or recommend the Fund. CDI does not guarantee the timeliness, accurateness, or completeness of any data or information relating to any Index and shall not be liable in any way to Grayscale, investors in or holders of any of the Fund or other third parties in respect of the use or accuracy of any Index or any data included therein.