Form 4 Filing for Five Star Bancorp

This filing details a transaction by Donna Lucas, a director at Five Star Bancorp. On July 22, 2026, Ms. Lucas acquired 1136 shares of Common Stock at a price of $44.00 per share. This transaction was made through the Lucas Family Trust, where Ms. Lucas serves as a trustee. Following this acquisition, Ms. Lucas now holds 14,254 shares. The filing also notes that 974 of these shares are unvested and are part of the Five Star Bancorp 2021 Equity Incentive Plan, scheduled to vest on December 31, 2026, contingent upon her continued directorship.