Form 4 Filing for Kaye Edward M. MD

This filing reports a Form 4 filed by Kaye Edward M. MD, a director at CYTOKINETICS INC. On May 27, 2026, Dr. Kaye acquired 2,851 shares of Common Stock and was granted 4,301 non-qualified stock options. The stock options have an exercise price of $77.15 and expire on May 26, 2036. Following these transactions, Dr. Kaye directly holds 13,216 shares of Common Stock and 4,301 stock options. The transactions were made under the company's equity incentive plan, with the acquisition of stock and options marked as 'A' for acquisition. The filing was signed by John Faurescu as attorney-in-fact for Dr. Kaye. The reporting owner's address is 350 Oyster Point Blvd, South San Francisco, CA 94080. The issuer's CIK is 0001061983 and its trading symbol is CYTK.