BTC Development Corp. — Director's Dealing 2025

Sep 30, 2025

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: BTC Development Corp. (BDCI)
CIK: 0002042292
Period of Report: 2025-09-29

Reporting Person: BTC Development Advisors LLC (N/A)

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Class B Ordinary Shares	$		Class A Ordinary Shares (4095833)		Direct

Footnotes

F1: The reporting persons disclaim beneficial ownership of these securities, except to the extent of its pecuniary interest therein, and this report shall not be deemed an admission that a reporting person is the beneficial owner of such securities for any other purpose.

F2: The Class B ordinary shares will automatically convert into Class A ordinary shares at the time of the issuer's business combination, or at any time and from time to time at the option of the holder, on a one-for-one basis, subject to certain adjustments described in the issuer's charter documents, and have no expiration date.

F3: Includes up to 550,000 shares that are subject to forfeiture in the event the underwriters of the issuer's initial public offering do not exercise their over-allotment option in full.