Sung Lee plan to sell securities of CYTOKINETICS, INCORPORATED under Form 144

Sung Lee filed Form 144 to notify SEC of plan to sell 9503 units of CYTOKINETICS, INCORPORATED securities around 2026-06-29, with aggregate market value of $781,051.57. The total outstanding units is 124432565.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 06/26/2026, sold 6695 units for $562380.00; On 06/24/2026, sold 38730 units for $3187328.11; On 05/05/2026, sold 23906 units for $1837766.45;