Form 4 Filing for Cipher Digital Inc. by Gregory J.D. Mumford

On October 14, 2026, Gregory J.D. Mumford, Chief Financial Officer of Cipher Digital Inc., reported several transactions. He acquired 125,000 Restricted Stock Units (RSUs) with a post-transaction ownership of 403,981 shares. Concurrently, he disposed of 67,768 shares of Common Stock at a price of $9.94 per share, resulting in a post-transaction ownership of 87,653 shares. Additionally, there was a non-derivative acquisition of 125,000 shares of Common Stock with a post-transaction ownership of 155,421 shares. The RSUs vest in installments on October 14, 2026, October 14, 2027, and October 14, 2028, contingent upon continued service. Each RSU represents a right to one share of Cipher Digital Inc. Common Stock.