Form 4 Filing for Kelly Patrick Arthur

Kelly Patrick Arthur, Co-President and COO of Cipher Mining Inc., reported several transactions on December 19, 2025. Arthur acquired 917,120 Performance Stock Units (PSUs) and 305,707 shares of Common Stock. Concurrently, Arthur disposed of 156,064 shares of Common Stock at a price of $16.21 per share. Additionally, 305,707 earned PSUs vested on the same date. The PSUs represent a contingent right to receive one share of Common Stock upon vesting, subject to continuous service. The acquisition of PSUs was based on the Issuer's satisfaction of certain performance criteria, with the award becoming reportable on December 19, 2025, after certification by the Compensation Committee. Following these transactions, Arthur holds 1,704,276 shares of Common Stock and 611,413 vested PSUs.