Form 4 Filing for Wendell Wierenga at Cytokinetics Inc.

This Form 4 filing reports transactions by Wendell Wierenga, a director at Cytokinetics Inc. (CYTK). On May 27, 2026, Mr. Wierenga acquired 2,851 shares of Common Stock and was granted 4,301 non-qualified stock options to buy Common Stock. The stock options have an exercise price of $77.15 and expire on May 26, 2036. Following these transactions, Mr. Wierenga directly owns 35,488 shares of Common Stock and holds 4,301 stock options.