Insider Transaction Report for Lee Sung

This filing details stock transactions by Lee Sung, EVP, Chief Financial Officer of CYTOKINETICS INC (CYTK), on June 29, 2026. The transactions include the acquisition of Common Stock through the exercise of stock options, with reported share amounts ranging from 188 to 1113 and exercise prices varying between $44.36 and $48.51. Specifically, 188 Incentive Stock Options and 822 Non-Qualified Stock Options were exercised at $44.36, followed by 1113 Non-Qualified Stock Options at $48.51. Additional exercises included 188 Incentive Stock Options and 823 Non-Qualified Stock Options, both at $44.36. In addition to option exercises, there were several open market purchases of Common Stock. A sale of 3134 shares of Common Stock at $85.00 per share was also reported. Post-transaction share ownership figures are provided for each transaction.