X0508 4 2024-06-05 0001035201 CALIFORNIA WATER SERVICE GROUP CWT 0001663507 Wagner Patricia K 1720 N. FIRST STREET SAN JOSE CA 95112 1 0 Common Stock 2024-06-05 4 A 0 2488 49.62 A 9648.8 D Restricted stock granted 6/5/2024 pursuant to the California Water Service Group equity incentive plan exempt under Rule 16-b-3. RSA vests with cliff vesting term, vesting 100% on 03/05/2025 Holdings include shares acquired in dividend reinvestment transactions. /s/ Michelle R. Mortensen on behalf of Patricia K. Wagner 2024-06-06