Form 4 Filing for Wierenga Wendell

On April 15, 2026, Wierenga Wendell, a director at CYTOKINETICS INC (CYTK), acquired 95 shares of common stock under the Director Equity in Lieu of Cash Retainer Program. The shares were granted at a price of $65.37 per share and are fully vested. Following this transaction, Wendell holds a total of 32,637 shares. This filing is a Form 4, indicating a change in beneficial ownership.