X0508 4 2025-12-19 0 0001819989 Cipher Mining Inc. CIFR 0001887627 Iwaschuk William C/O CIPHER MINING INC. 1 VANDERBILT AVENUE, FLOOR 54 NEW YORK NY 10017 0 1 0 0 Co-President and CLO 0 Common Stock 2025-12-19 4 M 0 305707 0 A 1585565 D Common Stock 2025-12-19 4 F 0 169056 16.21 D 1416509 D Common Stock 2025-12-19 4 G 0 26000 0 D 1390509 D Performance Stock Units 2025-12-19 4 A 0 917120 0 A Common Stock 917120 917120 D Performance Stock Units 2025-12-19 4 M 0 305707 0 D Common Stock 305707 611413 D The transaction reported shows the Reporting Person's charitable gift of shares of the Issuer's Common Stock to a donor advised fund. Each performance stock unit ("PSU") represents a contingent right to receive one share of Issuer's Common Stock. Represents the number of units earned under a PSU award based on the Issuer's satisfaction of certain performance criteria of the award. In light of the performance-based conditions of the award, the award was not reportable under Section 16 until performance conditions were certified by the Compensation Committee as achieved (which occurred on December 19, 2025). 305,707 earned PSUs vested on December 19, 2025, and the remaining earned PSUs will vest in substantially equal quarterly installments, with the first such vesting date occurring on March 31, 2026, subject to the Reporting Person's continuous service on each vesting date. These earned PSUs have no expiration date. /s/ William Iwaschuk 2025-12-23