Form 4 Filing for Cipher Digital Inc.

This filing details transactions by Gregory J.D. Mumford, Chief Financial Officer of Cipher Digital Inc. On March 31, 2026, Mr. Mumford acquired 17,108 shares of Common Stock with a transaction price of $0.00, bringing his total direct holdings to 17,108 shares. Concurrently, he disposed of 7,114 shares of Common Stock at a price of $12.87 per share, resulting in a post-transaction holding of 9,994 shares. Additionally, Mr. Mumford disposed of 17,108 Restricted Stock Units (RSUs), which represent a contingent right to receive one share of Common Stock per RSU. These RSUs were subject to vesting over a three-year period, vesting in equal quarterly installments. The post-transaction number of RSUs held is 563,198.