X0508 4 2025-12-15 0 0001819989 Cipher Mining Inc. CIFR 0001887616 Kelly Patrick Arthur C/O CIPHER MINING INC. 1 VANDERBILT AVENUE, FLOOR 54 NEW YORK NY 10017 0 1 0 0 Co-President and COO 1 Common Stock 2025-12-15 4 S 0 35569 15.08 D 1151770 D Common Stock 2025-12-15 4 M 0 470219 A 1621989 D Common Stock 2025-12-15 4 F 0 240047 14.74 D 1381942 D Common Stock 2025-12-15 4 M 0 33968 A 1415910 D Common Stock 2025-12-15 4 F 0 17341 14.74 D 1398569 D Restricted Stock Units 2025-12-15 4 M 0 470219 0 D Common Stock 470219 942592 D Restricted Stock Units 2025-12-15 4 M 0 33968 0 D Common Stock 33968 908624 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025. The sales were executed in multiple trades at prices ranging from $14.63 to $16.70. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. Represents the early vesting and settlement of the second installment of the RSU award granted on March 9, 2024. The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025. /s/ William Iwaschuk, Attorney-in-Fact for Patrick Arthur Kelly 2025-12-17