X0306 4 2020-09-05 0001035201 CALIFORNIA WATER SERVICE GROUP CWT 0001668263 Ouyang Elissa Y 1720 NORTH FIRST STREET SAN JOSE CA 95112 false true false false Chief Procurement & Lead CI Common Stock 2020-09-05 4 F false 35 45.88 D 4839.98 D Common Stock 2020-09-06 4 F false 47 45.88 D 4810.20 D Represents the number of shares withheld by and surrendered to the Issuer to satisfy the tax withholding obligations that arose in connection with the vesting of the Restricted Stock (RSA) Award #487. Represents the number of shares withheld by and surrendered to the Issuer to satisfy the tax withholding obligations that arose in connection with the vesting of the Restricted Stock (RSA) Award #442. Includes shares acquired through ESPP and dividend reinvestment /s/ Michelle Mortensen on behalf of Elissa Ouyang 2020-09-08