0002058905-26-000003.txt : 20260305 0002058905-26-000003.hdr.sgml : 20260305 20260305200313 ACCESSION NUMBER: 0002058905-26-000003 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260303 FILED AS OF DATE: 20260305 DATE AS OF CHANGE: 20260305 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: HAMNER KRISTAN A CENTRAL INDEX KEY: 0002058905 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-13883 FILM NUMBER: 26728115 MAIL ADDRESS: STREET 1: 1720 NORTH FIRST STREET CITY: SAN JOSE STATE: CA ZIP: 95112 FORMER NAME: FORMER CONFORMED NAME: HAMNER KRISTEN A DATE OF NAME CHANGE: 20250304 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: CALIFORNIA WATER SERVICE GROUP CENTRAL INDEX KEY: 0001035201 STANDARD INDUSTRIAL CLASSIFICATION: WATER SUPPLY [4941] ORGANIZATION NAME: 01 Energy & Transportation EIN: 770448994 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1720 N FIRST ST STREET 2: C/O CALIFORNIA WATER SERVICE CO CITY: SAN JOSE STATE: CA ZIP: 95112 BUSINESS PHONE: 4083678200 MAIL ADDRESS: STREET 1: 1720 FIRST ST STREET 2: C/O CALIFORNIA WATER SERVICE CO CITY: SAN JOSE STATE: CA ZIP: 95112 4 1 edgardoc.xml PRIMARY DOCUMENT X0508 4 2026-03-03 0 0001035201 CALIFORNIA WATER SERVICE GROUP CWT 0002058905 HAMNER KRISTAN A 1720 NORTH FIRST STREET SAN JOSE CA 95112 0 1 0 0 VP, Chief Human Resource Offcr 0 Common Stock 2026-03-03 4 A 0 1650 0.0 A 3133.457 D Common Stock 2026-03-04 4 F 0 190 46.99 D 2943.457 D Restricted stock granted on 3/3/2026 pursuant to the California Water Service Group equity incentive plan in a transaction exempt under Rule 16-b-3 vests with one-third on March 3, 2027, and with the remaining 2/3 vesting quarterly over the succeeding 24 months. Includes shares acquired through the Employee Stock Purchase Program. Represents the number of shares withheld and surrendered to the issuer to satisfy the tax withholding obligations that arose in connection with the vesting of Restricted Stock (RSA) Award granted on March 4,2025 By: /s/ Michelle R. Mortensen For: Kristan Hamner 2026-03-05