BTCS Inc.

10b5-1 Plans

During the fiscal quarter ended March 31, 2026, no officers (as defined in Rule 16a-1(f)) or directors adopted orterminated any “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as defined in Item 408 of Regulation S-K).

Investor Communications via X (formerly Twitter)

The Company uses the following X (formerly Twitter) accounts, @Charles_BTCS and @NasdaqBTCS, as supplemental channels for communicating with the public about the Company. These social media channels are not, and will not be, used to disclose material non-public information. The Company will continue to make disclosures of material information in accordance with applicable SEC rules and regulations, including through SEC filings and, where appropriate, press releases. Investors should not rely on information disseminated through social media channels for purposes of making investment decisions and should instead rely on the Company’s SEC filings, press releases, and other public disclosures for material information. The Company encourages investors, the media, and other interested parties to monitor the Company’s filings with the SEC, press releases, and website at www.btcs.com in addition to the accounts listed above. The information contained on or accessible through the Company’s website and social media accounts is not incorporated by reference into this report or any other filing with the SEC.