# EDGAR Filing Document

**Accession Number:** 0001035201
**File Stem:** 0001104659-26-040709
**Filing Date:** 2026-4
**Character Count:** 1210
**Document Hash:** 5b825bee3c5703e78de862594e63bfaa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-040709.hdr.sgml**: 20260408

**ACCESSION NUMBER**: 0001104659-26-040709

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260408

**DATE AS OF CHANGE**: 20260408

**EFFECTIVENESS DATE**: 20260408

**FILER**: 

**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

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-13883
- **FILM NUMBER:** 26846698

**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

### Attached PDF Documents

**Attachment 1:** `tm263819d2_ars.pdf`

_No text found in this document._