CWT / California Water Service Group - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

California Water Service Group
US ˙ NYSE ˙ US1307881029

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LEI 529900QABDOBU6UVRQ36
CIK 1035201
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to California Water Service Group
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
July 31, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 31, 2025 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 31, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 31, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-1

July 31, 2025 EX-99.2

Second Quarter 2025 Earnings Presentation July 31, 2025

Exhibit 99.2 Second Quarter 2025 Earnings Presentation July 31, 2025 2 Today’s Speakers Marty Kropelnicki Chairman & CEO James Lynch Sr. Vice President, CFO & Treasurer Shilen Patel Chief Business Development Officer and Vice President, TWSC, Inc. 3 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (“PSLRA

July 31, 2025 EX-99.1

California Water Service Group Reports Second Quarter 2025 Results

Exhibit 99.1 California Water Service Group Reports Second Quarter 2025 Results SAN JOSE, Calif., July 31, 2025 (GLOBE NEWSWIRE) - California Water Service Group (Group or Company, NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported financial results for the second quarter 2025. Financial highlights included: · Net incom

July 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 30, 2025 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 30, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 30, 2025 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 322nd CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 JULY 30, 2025 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 322nd CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif., July 30, 2025 —At its meeting on July 30, 2025, the California Water Service Group (NYSE: CWT) (Company) Board of Directors declared the Company’s 322nd consecutive quarterly dividend in the amount of $0.30 per common share. The quarterl

July 10, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 10, 2025 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 10, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 10, 2025 EX-99.1

S&P Global Retains A+/Stable Rating for California Water Service

Exhibit 99.1 S&P Global Retains A+/Stable Rating for California Water Service SAN JOSE, Calif., July 10, 2025 (GLOBE NEWSWIRE) - California Water Service Group (“Group” or “Company,” NYSE: CWT) today announced that S&P Global has retained an A+/Stable credit rating for California Water Service (Cal Water), Group’s largest subsidiary, indicating a business risk rating of “excellent” and a financial

May 29, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 28, 2025 CALIFORNIA WATER SER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 28, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

May 15, 2025 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 14, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

May 15, 2025 EX-1.2

Form of Master Forward Confirmation

Exhibit 1.2 Form of Master ATM Forward Confirmation Date:       [*], 20[*] To: California Water Service Group 1720 North First Street San Jose, California 95112 E-mail: [*] Attention: [*] From: [DEALER NAME AND NOTICE INFORMATION] Ladies and Gentlemen: The purpose of this letter agreement (this “Master Confirmation”) is to confirm the terms and conditions of the Transactions to be entered into fro

May 15, 2025 EX-1.1

Equity Distribution Agreement, dated as of May 14, 2025, between California Water Service Group and Robert W. Baird & Co. Incorporated, BofA Securities, Inc, Morgan Stanley & Co. LLC, Wells Fargo Securities, LLC, Janney Montgomery Scott LLC, RBC Capital Markets, LLC, Blaylock Van, LLC and Samuel A. Ramirez & Company, Inc.

Exhibit 1.1 Execution Version CALIFORNIA WATER SERVICE GROUP COMMON STOCK, PAR VALUE $0.01 PER SHARE EQUITY DISTRIBUTION AGREEMENT May 14, 2025 May 14, 2025 To: Robert W. Baird & Co. Incorporated 777 E. Wisconsin Avenue Milwaukee, WI 53202 BofA Securities, Inc. One Bryant Park New York, NY 10036 Morgan Stanley & Co. LLC 1585 Broadway New York, NY 10036 Wells Fargo Securities, LLC 30 Hudson Yards,

May 14, 2025 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-3 CALIFORNIA WATER SERVICE GROUP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $0.

May 14, 2025 S-3ASR

As filed with the Securities and Exchange Commission on May 14, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on May 14, 2025 Registration No.

May 14, 2025 424B5

California Water Service Group Common Stock Having an Aggregate Offering Price of up to $350,000,000

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)  Registration No. 333-287273 PROSPECTUS SUPPLEMENT (To Prospectus dated May 14, 2025) California Water Service Group Common Stock Having an Aggregate Offering Price of up to $350,000,000 We have entered into an equity distribution agreement (the “Equity Distribution Agreement”) with Robert W. Baird & Co. Incorporated, BofA Securities, Inc., Morg

May 14, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 CALIFORNIA WATER SERVICE GROUP Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $0.

May 1, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

May 1, 2025 EX-99.2

First Quarter 2025 Earnings Presentation May 1, 2025

Exhibit 99.2 First Quarter 2025 Earnings Presentation May 1, 2025 2 Today’s Speakers Marty Kropelnicki Chairman & CEO James Lynch Sr. Vice President, CFO & Treasurer 3 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (“PSLRA”) . The forward - looking statements are intended to qualify under provisions of

May 1, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 1, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file numb

May 1, 2025 EX-99.1

California Water Service Group Reports First Quarter 2025 Results

Exhibit 99.1 California Water Service Group Reports First Quarter 2025 Results SAN JOSE, Calif., May 1, 2025 (GLOBE NEWSWIRE) - California Water Service Group (“Group” or “Company,” NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported financial results for the first quarter 2025. Financial highlights included: · The inclu

May 1, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-

May 1, 2025 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended March 31, 2025 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the

April 30, 2025 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 321st CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 April 30, 2025 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 321st CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif., April 30, 2025 —At its meeting on April 30, 2025, the California Water Service Group (NYSE: CWT) (Company) Board of Directors (Board) declared the company's 321st consecutive quarterly dividend in the amount of $0.30 per common share. T

April 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 30, 2025 CALIFORNIA WATER S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 30, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 16, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

February 27, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 27, 2025 EX-22.1

List of Subsidiary Issuers and Guarantors

Exhibit 22.1 List of Subsidiary Issuers and Guarantors As of December 31, 2024, the Company is the guarantor of the registered mortgage bonds issued by the following entities. The Company owns, directly or indirectly, 100% of each such entity. California Water Service Company a.5.50% First Mortgage Bonds due 2040, Series PPP, issued in 2010

February 27, 2025 EX-99.1

California Water Service Group Reports Fourth Quarter and Full Year 2024 Results

Exhibit 99.1 California Water Service Group Reports Fourth Quarter and Full Year 2024 Results SAN JOSE, Calif., February 27, 2025 (GLOBE NEWSWIRE) - California Water Service Group (Group or Company, NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported financial results for the fourth quarter and full year of 2024. Highlig

February 27, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 27, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 27, 2025 EX-21

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrant Subsidiary Name State of Incorporation Business Name California Water Service Company California California Water Service Company CWS Utility Services California CWS Utility Services New Mexico Water Service Company New Mexico New Mexico Water Service Company Washington Water Service Company Washington Washington Water Service Company Hawaii Water Service Company, Inc.

February 27, 2025 EX-19.0

California Water Service Group

Exhibit 19.0 CALIFORNIA WATER SERVICE GROUP POLICY Subject: Department: Number: Insider Trading Policy Corporate Secretary 210 ( ) Complete Revision (X) Partial Revision ( ) New Supersedes: Page: 210 dated 02/24/2021 1 Purpose: To promote compliance with all applicable U.S. securities laws and regulations regarding insider trading. Scope: This policy applies to all directors, officers, and employe

February 27, 2025 EX-4.15

Description of securities (Exhibit 4.15 to the Annual Report on Form 10-K filed February 29, 2024)

Exhibit 4.15 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the common stock of California Water Service Group (the “Group,” “us,” “our” or ”we”) does not purport to be complete and is subject to, and qualified in its entirety by, our certificate of incorporation, as amended (“certificate”), and our a

February 27, 2025 EX-99.2

Fourth Quarter and Full Year 2024 Earnings Presentation February 27, 2025

Exhibit 99.2 Fourth Quarter and Full Year 2024 Earnings Presentation February 27, 2025 2 Today’s Speakers Marty Kropelnicki Chairman & CEO James Lynch Sr. Vice President, CFO & Treasurer Greg Milleman Vice President, Rates & Regulatory Affairs 3 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (PSLRA) . T

January 29, 2025 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 29, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 29, 2025 EX-99.1

California Water Service Group Board of Directors Declares 320th Consecutive Quarterly Dividend and Announces One-Time Special Dividend

Exhibit 99.1 January 29, 2025 For immediate release California Water Service Group Board of Directors Declares 320th Consecutive Quarterly Dividend and Announces One-Time Special Dividend SAN JOSE, Calif., January 29, 2025 —At its meeting on January 29, 2025, the California Water Service Group (NYSE: CWT) (Company) Board of Directors (Board) declared the company's 320th consecutive quarterly divid

January 16, 2025 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 14, 2025 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 31, 2024 CALIFORNIA WATER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 31, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 31, 2024 EX-99.2

Third Quarter 2024 Earnings Presentation October 31, 2024

Exhibit 99.2 Third Quarter 2024 Earnings Presentation October 31, 2024 2 Today’s Speakers Marty Kropelnicki Chairman & CEO James Lynch Sr. Vice President, CFO & Treasurer Greg Milleman Vice President, Rates & Regulatory Affairs 3 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (PSLRA) . The forward - loo

October 31, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

October 31, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 319TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 October 30, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 319TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. – At its meeting on October 30, 2024, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 319th consecutive quarterly dividend in the amount of $0.28 per common share. It will be payable on November

October 31, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 30, 2024 CALIFORNIA WATER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 30, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 31, 2024 EX-99.1

California Water Service Group Reports Third Quarter Results

Exhibit 99.1 California Water Service Group Reports Third Quarter Results SAN JOSE, Calif., October 31, 2024 (GLOBE NEWSWIRE) - California Water Service Group (“Group” or “Company,” NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported financial results for the third quarter of 2024. Highlights included: • Recorded diluted

October 31, 2024 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended September 30, 2024 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

October 23, 2024 EX-10.1

Sixty-Fourth Supplemental Indenture dated as of October 22, 2024, between California Water Service Company and U.S. Bank Trust Company, National Association, as trustee, covering 5.22% First Mortgage Bonds due 2054, Series 2.

Exhibit 10.1 Recording requested by and when recorded mail to: Gibson, Dunn & Crutcher LLP 2029 Century Park East Suite 4000 Los Angeles, CA 90067 Attn: Melissa Barshop Sixty-Fourth Supplemental Indenture CALIFORNIA WATER SERVICE COMPANY and U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION as Trustee Dated as of October 22, 2024 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 4 SECTION 1.01. Definitions

October 23, 2024 8-K

Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 22, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

August 23, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): August 22, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

August 1, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-1

August 1, 2024 EX-99.2

Second Quarter 2024 Earnings Presentation August 1, 2024

Exhibit 99.2 Second Quarter 2024 Earnings Presentation August 1, 2024 2 Today’s Speakers Marty Kropelnicki Chairman & CEO James Lynch Sr. Vice President, CFO & Treasurer Greg Milleman Vice President, Rates & Regulatory Affairs 3 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 (“ PSLRA ”). The forward - l

August 1, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): August 1, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

August 1, 2024 EX-99.1

California Water Service Group Reports Second Quarter Results

Exhibit 99.1 California Water Service Group Reports Second Quarter Results SAN JOSE, Calif., August 1, 2024 (GLOBE NEWSWIRE) - California Water Service Group (“Group” or “Company,” NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported financial results for the second quarter of 2024. Highlights included: · Diluted earnings

July 31, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 31, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 31, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 318TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 July 31, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 318TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. – At its meeting on July 31, 2024, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 318th consecutive quarterly dividend in the amount of $0.28 per common share. It will be payable on August 23, 202

July 9, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 8, 2024 CALIFORNIA WATER SER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 8, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

July 9, 2024 EX-99.1

California Water Service Group Subsidiary Files Plan to Invest $1.6 Billion in its California Water Systems in Upcoming Three Years, Proposes Program to Decouple Revenue from Water Sales

Exhibit 99.1 July 9, 2024 For immediate release California Water Service Group Subsidiary Files Plan to Invest $1.6 Billion in its California Water Systems in Upcoming Three Years, Proposes Program to Decouple Revenue from Water Sales SAN JOSE, Calif.—To continue providing safe, clean, reliable tap water to customers across the communities it serves, California Water Service (Cal Water)—the larges

June 3, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 29, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

May 29, 2024 EX-99.1

California Water Service Group

 Exhibit 99.1 CALIFORNIA WATER SERVICE GROUP   2024 Equity Incentive Plan   As adopted on April 2, 2024   1.     Purposes.   (a)           Eligible Stock Award Recipients. The persons eligible to receive Stock Awards are Employees and Directors.   (b)           Available Stock Awards. The Plan provides for the grant of the following Stock Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stoc

May 29, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables FORM S-8 (Form Type) CALIFORNIA WATER SERVICE GROUP (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title (1) Fee Calculation Rule(2) Amount Registered Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee Equity Commo

May 29, 2024 S-8

As filed with the Securities and Exchange Commission on May 29, 2024.

As filed with the Securities and Exchange Commission on May 29, 2024. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 California water service group (Exact name of registrant as specified in its charter) Delaware (State or Other Jurisdiction of Incorporation or Organization) 77-0448994 (I.R

May 1, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

April 25, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 25, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 25, 2024 EX-99.2

0 First Quarter 2024 Earnings Results Presentation April 25, 2024

Exhibit 99.2 0 First Quarter 2024 Earnings Results Presentation April 25, 2024 INVESTOR RELATIONS Marty Kropelnicki Chairman & CEO Today’s Participants 1 James Lynch Sr. Vice President, CFO & Treasurer Greg Milleman Vice President, Rates & Regulatory Affairs INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the

April 25, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-

April 25, 2024 EX-99.1

California Water Service Group’s First Quarter 2024 Financial Results Benefit from California 2021 General Rate Case Decision

Exhibit 99.1 California Water Service Group’s First Quarter 2024 Financial Results Benefit from California 2021 General Rate Case Decision San Jose, Calif. California Water Service Group (“Group” or “Company,” NYSE: CWT), a leading publicly traded water utility serving California, Hawaii, New Mexico, Washington, and Texas, today reported results for the first quarter of 2024. Highlights included:

April 25, 2024 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended March 31, 2024 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the

April 24, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 24, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 24, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 317TH CONSECUTIVE QUARTERLY DIVIDEND AND 57TH CONSECUTIVE ANNUAL DIVIDEND INCREASE

Exhibit 99.1 April 24, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 317TH CONSECUTIVE QUARTERLY DIVIDEND AND 57TH CONSECUTIVE ANNUAL DIVIDEND INCREASE SAN JOSE, Calif. – At its meeting on April 24, 2024, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 317th consecutive quarterly dividend in the amount of $0.28 per co

April 17, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.       ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by R

April 9, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 9, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

April 9, 2024 EX-99.1

Cal Water Secures $83 Million in Additional State Funding to Relieve Customers of Past-Due Balances Accumulated During Pandemic

Exhibit 99.1 1720 N. First Street, San Jose, CA 95112 April 9, 2024 Contact: Yvonne Kingman, 310-257-1434 For Immediate Release Cal Water Secures $83 Million in Additional State Funding to Relieve Customers of Past-Due Balances Accumulated During Pandemic SAN JOSE, Calif.—With financial impacts of COVID-19 felt by California Water Service (Cal Water) customers well past the height of the pandemic,

March 11, 2024 EX-99.1

# # #

Exhibit 99.1 March 11, 2024 For immediate release California Public Utilities Commission Adopts Decision on California Water Service’s 2021 General Rate Case and Infrastructure Improvement Plan SAN JOSE, Calif. – The California Public Utilities Commission (CPUC) issued a decision on March 7, 2024 on the 2021 General Rate Case and Infrastructure Improvement Plan for California Water Service (Cal Wa

March 11, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 11, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

February 29, 2024 EX-4.15

Description of securities

Exhibit 4.15 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the common stock of California Water Service Group (the “Group,” “us,” “our” or ”we”) does not purport to be complete and is subject to, and qualified in its entirety by, our certificate of incorporation, as amended (“certificate”), and our a

February 29, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 29, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 29, 2024 EX-21.0

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrant Subsidiary Name State of Incorporation Business Name California Water Service Company California California Water Service Company CWS Utility Services California CWS Utility Services New Mexico Water Service Company New Mexico New Mexico Water Service Company Washington Water Service Company Washington Washington Water Service Company Hawaii Water Service Company, Inc.

February 29, 2024 EX-99.2

0 2023 Year and Fourth Quarter Earnings Results Presentation February 29, 2024

Exhibit 99.2 0 2023 Year and Fourth Quarter Earnings Results Presentation February 29, 2024 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("PSL RA"). The forward - looking statements are intended to qualify under provisions of the federal securities laws

February 29, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 29, 2024 EX-22.1

List of Subsidiary Issuers and Guarantors

Exhibit 22.1 List of Subsidiary Issuers and Guarantors As of December 31, 2023, the Company is the guarantor of the registered mortgage bonds issued by the following entities. The Company owns, directly or indirectly, 100% of each such entity. California Water Service Company a.5.50% First Mortgage Bonds due 2040, Series PPP, issued in 2010

February 29, 2024 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned hereby certifies, in his capacity as an officer of California Water Service Group, that the Annual Report of California Water Service Group on Form 10-K for the period ende

February 29, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2023 Earnings for Year and Fourth Quarter

Exhibit 99.1 February 29, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2023 Earnings for Year and Fourth Quarter SAN JOSE, CA – California Water Service Group (NYSE: CWT) (“Company” or “CWT”) today announced 2023 full year net income attributable to CWT of $51.9 million and diluted earnings per share of $0.91 for 2023, as compared to net income attributable to CWT of $96.0 m

February 29, 2024 EX-10.27

Offer letter between James P. Lynch and California Water Service Group dated January 2, 2024

Exhibit 10.27 OFFER LETTER BETWEEN JAMES P. LYNCH AND CALIFORNIA WATER SERVICE GROUP DATED JANUARY 2, 2024 VIA – REGULAR MAIL Dear Jim: I am pleased to confirm your recent conversation with Marty Kropelnicki, Chairman, President & CEO regarding our offer as Senior Vice President, Chief Financial Officer & Treasurer reporting to Marty. In this position, your starting salary will be $39,166.67 month

February 29, 2024 EX-97

Incentive Compensation Clawback Policy

Exhibit 97 CALIFORNIA WATER SERVICE GROUP INCENTIVE COMPENSATION CLAWBACK POLICY This Incentive Compensation Clawback Policy (this “Policy”) has been adopted by the Board of Directors (the “Board”) of California Water Service Group (the “Company”) effective October 2, 2023 (the “Effective Date”) and replaces in its entirety the Company’s Clawback Policy dated November 28, 2012 (the “Prior Policy”).

February 29, 2024 EX-3.5

Amended and Restated Bylaws of California Water Service Group, as amended on February 28, 2024 (Exhibit 3.5 to the Annual Report on Form 10-K filed February 29, 2024)

Exhibit 3.5 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (A DELAWARE CORPORATION) AS AMENDED EFFECTIVE FEBRUARY 28, 2024 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (a Delaware corporation) as amended effective February 28, 2024 ARTICLE 1. OFFICES SECTION 1.1. REGISTERED OFFICE. The registered office of the corporation shall be fixed in the certificate of incorpo

February 13, 2024 SC 13G/A

CWT / California Water Service Group / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0513-californiawaterservic.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 12)* Name of issuer: California Water Service Group Title of Class of Securities: Common Stock CUSIP Number: 130788102 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriat

February 6, 2024 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 2, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 29, 2024 EX-99.1

# # #

Exhibit 99.1 January 26, 2024 For immediate release Cal Water Receives Proposed Decision and Alternate Proposed Decision on 2021 General Rate Case SAN JOSE, Calif.—On January 24, 2024, the California Public Utilities Commission (CPUC) Administrative Law Judges assigned to California Water Service’s (Cal Water) 2021 General Rate Case issued a proposed decision; the assigned Commissioner issued an a

January 29, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 24, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 26, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 316TH CONSECUTIVE QUARTERLY DIVIDEND AND 57TH CONSECUTIVE ANNUAL DIVIDEND INCREASE

Exhibit 99.1 January 25, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 316TH CONSECUTIVE QUARTERLY DIVIDEND AND 57TH CONSECUTIVE ANNUAL DIVIDEND INCREASE SAN JOSE, Calif. – At its meeting on January 25, 2024, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 316th consecutive quarterly dividend, increasing the annual di

January 26, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 25, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 4, 2024 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES APPOINTMENT OF JAMES P. LYNCH TO SENIOR VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER

Exhibit 99.1 January 4, 2024 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES APPOINTMENT OF JAMES P. LYNCH TO SENIOR VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER SAN JOSE, Calif. – California Water Service Group (NYSE : CWT) today announced that after conducting an extensive, nation-wide search, it has selected James P. Lynch to join the company as Senior Vice President, Ch

January 4, 2024 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 3, 2024 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 27, 2023 EX-99.1

# # #

Exhibit 99.1 October 26, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES ELECTION OF JEFFREY KIGHTLINGER TO BOARD OF DIRECTORS San Jose, Calif. — California Water Service Group (Group) (NYSE: CWT) today announced the election of Jeffrey Kightlinger, 63, to the Group’s Board of Directors, effective Nov. 1, 2023. Kightlinger has the distinction of having been the longest serving

October 27, 2023 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 25, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 26, 2023 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended September 30, 2023 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

October 26, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES THIRD QUARTER 2023 RESULTS

Exhibit 99.1 October 26, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES THIRD QUARTER 2023 RESULTS SAN JOSE, CA – California Water Service Group (NYSE: CWT) (“Group”) today announced net income attributable to Group of $34.4 million and diluted earnings per share of $0.60 for the quarter ended September 30, 2023, as compared to net income attributable to Group of $55.9 million

October 26, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

October 26, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 26, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 26, 2023 EX-99.2

0 Third Quarter 2023 Results Presentation October 26, 2023

Exhibit 99.2 0 Third Quarter 2023 Results Presentation October 26, 2023 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("PSLRA"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" tre

October 25, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 315TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 October 25, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 315TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. – At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 315th consecutive quarterly dividend in the amount of $0.26 per common share. It will be payable on November 17, 2023, to

October 25, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 25, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 18, 2023 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 13, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

August 1, 2023 EX-99.1

WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION SETS NEW RATES FOR WASHINGTON WATER SERVICE Decision Approves Utility’s Final Infrastructure Improvement Plan Filing

Exhibit 99.1 14519 Peacock Hill NW, Gig Harbor, WA 98332 July 31, 2023 Contact: Matt Brown (360) 491-3760 For Immediate Release WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION SETS NEW RATES FOR WASHINGTON WATER SERVICE Decision Approves Utility’s Final Infrastructure Improvement Plan Filing GIG HARBOR, Wash.—Washington Water Service (Washington Water), a subsidiary of California Water Service

August 1, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 27, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 27, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-1

July 27, 2023 EX-3.4

Certificate of Amendment to Amended Certificate of Incorporation of California Water Service Group (Exhibit 3.4 to the Quarterly Report on Form 10-Q filed July 27, 2023)

Exhibit 3.4 CERTIFICATE OF AMENDMENT TO AMENDED CERTIFICATE OF INCORPORATION OF CALIFORNIA WATER SERVICE GROUP California Water Service Group, a corporation organized and existing under the General Corporation Law of the State of Delaware, does hereby certify: 1.The name of the Corporation is: “California Water Service Group” 2.The Certificate of Incorporation, as amended June 8, 2011 and as furth

July 27, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2023 RESULTS

Exhibit 99.1 July 27, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2023 RESULTS SAN JOSE, CA – California Water Service Group (NYSE: CWT) (“Group”) today announced net income attributable to Group of $9.6 million and diluted earnings per share of $0.17 for the quarter ended June 30, 2023, as compared to net income attributable to Group of $19.5 million and dil

July 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 27, 2023 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 27, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 27, 2023 EX-99.2

0 Second Quarter 2023 Results Presentation July 27, 2023

Exhibit 99.2 0 Second Quarter 2023 Results Presentation July 27, 2023 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("PSLRA"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treat

July 27, 2023 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended June 30, 2023 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the S

July 27, 2023 EX-10.2

Separation Agreement by and between Robert J. Kuta and California Water Service Company dated June 2, 2023

Exhibit 10.2 SEPARATION AGREEMENT This Separation Agreement (“Agreement”) is made and entered into by and between Robert J. Kuta (“Employee") and California Water Service Company (the “Company” or “Cal Water”) (sometimes referred to herein collectively as the “Parties” and individually as a “Party”). In consideration of the mutual promises and covenants set forth below, the Parties agree as follow

July 27, 2023 EX-10.1

Transition Agreement by and between Thomas Smegal III and California Water Service Company dated May 30, 2023

Exhibit 10.1 TRANSITION AGREEMENT This Transition Agreement (“Agreement”) is made and entered into by and between Thomas Smegal III (“Employee") and California Water Service Company (the “Company” or “Cal Water”) (sometimes referred to herein collectively as the “Parties” and individually as a “Party”). In consideration of the mutual promises and covenants set forth below, the Parties agree as fol

July 26, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 314TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 July 26, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 314TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. – At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 314th consecutive quarterly dividend in the amount of $0.26 per common share. It will be payable on August 18, 2023 to stockh

July 26, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 26, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 18, 2023 EX-99.1

Washington Water Service Acquires Stroh’s Water Company

Exhibit 99.1 14519 Peacock Hill NW, Gig Harbor, WA 98332 July 18, 2023 Contact: Yvonne Kingman, (310) 257-1434 For Immediate Release Washington Water Service Acquires Stroh’s Water Company GIG HARBOR, Wash.—Washington Water Service (Washington Water), a subsidiary of California Water Service Group (Group) (NYSE: CWT), yesterday completed the acquisition of Stroh’s Water Company’s (Stroh’s Water) w

July 18, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 17, 2023 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 17, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 5, 2023 EX-99.1

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Exhibit 99.1 July 5, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES ELECTION OF CHARLES R. PATTON TO BOARD OF DIRECTORS SAN JOSE, Calif.—California Water Service Group (Group) (NYSE: CWT) today announced the election of Charles R. Patton, 64, to the Group’s Board of Directors, effective July 1, 2023. Prior to his retirement in July 2022, Patton served as Executive Vice Preside

July 5, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 29, 2023 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 29, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 3, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 29, 2023 CALIFORNIA WATER SE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 29, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 3, 2023 EX-99.1

California Public Utilities Commission Adopts Cost of Capital Proposed Decision Setting California Water Service’s Return on Equity

Exhibit 99.1 1720 North First St., San Jose, CA 95112 July 3, 2023 Contact: Yvonne Kingman, 310-257-1434 For Immediate Release California Public Utilities Commission Adopts Cost of Capital Proposed Decision Setting California Water Service’s Return on Equity SAN JOSE, Calif.—(NYSE: CWT)—The California Public Utilities Commission has approved the proposed decision issued in the cost of capital appl

June 16, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 15, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

June 16, 2023 EX-99.1

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Exhibit 99.1 June 15, 2023 For immediate release New Mexico Water Service Receives NMPRC Approval to Acquire Monterey Water Company SAN JOSE, Calif.—(NYSE: CWT)—The New Mexico Public Regulation Commission has given approval for New Mexico Water Service (New Mexico Water) to acquire the assets of Monterey Water Company (Monterey), paving the way for New Mexico Water to close the purchase and provid

June 1, 2023 EX-99.1

California Water Service Group Promotes Michael B. Luu and Shilen M. Patel

Exhibit 99.1 June 1, 2023 For immediate release California Water Service Group Promotes Michael B. Luu and Shilen M. Patel SAN JOSE, Calif. – California Water Service Group (Group) announced today that it has promoted Michael B. Luu to Senior Vice President, Corporate Services & Chief Risk Officer. As Senior Vice President, he is responsible for overseeing key corporate departments, including busi

June 1, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 26, 2023 CALIFORNIA WATER SER

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 26, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

May 23, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

May 16, 2023 PX14A6G

Notice of Exempt Solicitation (Voluntary Submission)

Notice of Exempt Solicitation (Voluntary Submission) Pursuant to Rule 14a-103 Name of the Registrant: California Water Service Group Name of persons relying on exemption: Nia Impact Capital Address of persons relying on exemption: 4900 Shattuck Ave #3648, Oakland, CA 94609 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

May 10, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 9, 2023 CALIFORNIA WATER SERV

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 9, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file numb

May 9, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

May 5, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

May 4, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

May 3, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Defin

April 28, 2023 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended March 31, 2023 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the

April 28, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-

April 27, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES FIRST QUARTER 2023 RESULTS

Exhibit 99.1 April 27, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES FIRST QUARTER 2023 RESULTS SAN JOSE, CA – California Water Service Group (NYSE: CWT) (“Group”) today announced a net loss attributable to Group of $22.2 million and diluted loss per share of $0.40 for the quarter ended March 31, 2023, as compared to net income attributable to Group of $1.1 million and dilute

April 27, 2023 PX14A6G

Notice of Exempt Solicitation (Voluntary Submission)

Notice of Exempt Solicitation (Voluntary Submission) Pursuant to Rule 14a-103 Name of the Registrant: California Water Service Group Name of persons relying on exemption: Nia Impact Capital Address of persons relying on exemption: 4900 Shattuck Ave #3648, Oakland, CA 94609 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

April 27, 2023 EX-99.2

0 First Quarter 2023 Results Presentation April 27, 2023

Exhibit 99.2 0 First Quarter 2023 Results Presentation April 27, 2023 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("PSLRA"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treat

April 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 27, 2023 CALIFORNIA WATER S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 27, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 26, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 26, 2023 CALIFORNIA WATER S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 26, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 26, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 313TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 April 26, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 313TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. – At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 313th consecutive quarterly dividend in the amount of $0.26 per common share. It will be payable on May 19, 2023 to stockhol

April 19, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

April 7, 2023 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.      ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Ru

April 5, 2023 EX-99.1

California Water Service Group Enters New $600 Million Credit Agreement

Exhibit 99.1 April 4, 2023 For immediate release California Water Service Group Enters New $600 Million Credit Agreement SAN JOSE, Calif. – California Water Service Group (Group) (NYSE: CWT) today announced that it has entered into unsecured revolving credit facilities for Group and its subsidiaries totaling $600 million for a term of five years. Of the total, $400 million is available to Californ

April 5, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 31, 2023 CALIFORNIA WATER S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 31, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 5, 2023 EX-10.2

Credit Agreement dated as of March 31, 2023 among California Water Service Group and certain of its subsidiaries from time to time party thereto, as borrowers, Bank of America, N.A., as administrative agent, swing line lender and letter of credit issuer, BofA Securities, Inc., as sole lead arranger and sole bookrunner, CoBank, ACB, and U.S. Bank National Association as co-syndication agents, Bank of China, Los Angeles Branch as documentation agent, and the other lender parties thereto (Exhibit 10.2 to the Current Report on Form 8-K filed April 5, 2023)

Exhibit 10.2 Execution Version Published CUSIP Number: 13083LAG1 Revolver CUSIP Number: 13083LAH9 CREDIT AGREEMENT Dated as of March 31, 2023 among CALIFORNIA WATER SERVICE GROUP, and CERTAIN SUBSIDIARIES as Borrowers, BANK OF AMERICA, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, COBANK, ACB and U.S. BANK NATIONAL ASSOCIATION, as Co-Syndication Agents, BANK OF CHINA, LOS ANGELE

April 5, 2023 EX-10.1

Credit Agreement dated as of March 31, 2023 among California Water Service Company as borrower, Bank of America, N.A., as administrative agent, swing line lender and letter of credit issuer, BofA Securities, Inc., as sole lead arranger and sole bookrunner, CoBank, ACB, and U.S. Bank National Association as co-syndication agents, Bank of China, Los Angeles Branch as documentation agent, and the other lender parties thereto (Exhibit 10.1 to the Current Report on Form 8-K filed April 5, 2023)

Exhibit 10.1 Execution Version Published CUSIP Number: 13083KAG3 Revolver CUSIP Number: 13083KAH1 CREDIT AGREEMENT Dated as of March 31, 2023 among CALIFORNIA WATER SERVICE COMPANY, as Borrower, BANK OF AMERICA, N.A., as Administrative Agent, Swing Line Lender and L/C Issuer, COBANK, ACB and U.S. BANK NATIONAL ASSOCIATION, as Co-Syndication Agents, BANK OF CHINA, LOS ANGELES BRANCH, as Documentati

March 1, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 1, 2023 EX-4.15

Description of securities

Exhibit 4.15 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the common stock of California Water Service Group (the “Group,” “us,” “our” or ”we”) does not purport to be complete and is subject to, and qualified in its entirety by, our certificate of incorporation, as amended (“certificate”), and our a

March 1, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2022 EARNINGS FOR YEAR AND FOURTH QUARTER

Exhibit 99.1 March 1, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2022 EARNINGS FOR YEAR AND FOURTH QUARTER SAN JOSE, CA – California Water Service Group (NYSE: CWT) ( “Company” or “CWT”) today announced net income attributable to CWT of $96.0 million and diluted earnings per share of $1.77 for 2022, compared to net income attributable to CWT of $101.1 million and diluted e

March 1, 2023 EX-21.0

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrant Subsidiary Name State of Incorporation Business Name California Water Service Company California California Water Service Company CWS Utility Services California CWS Utility Services New Mexico Water Service Company New Mexico New Mexico Water Service Company Washington Water Service Company Washington Washington Water Service Company Hawaii Water Service Company, Inc.

March 1, 2023 EX-99.2

0 Fourth Quarter and Year End 2022 Results Presentation March 2, 2023

Exhibit 99.2 0 Fourth Quarter and Year End 2022 Results Presentation March 2, 2023 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("PSLRA"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe

March 1, 2023 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned hereby certifies, in his capacity as an officer of California Water Service Group, that the Annual Report of California Water Service Group on Form 10-K for the period ende

March 1, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 1, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

March 1, 2023 EX-22.1

List of Subsidiary Issuers and Guarantors

Exhibit 22.1 List of Subsidiary Issuers and Guarantors As of December 31, 2022, the Company is the guarantor of the registered mortgage bonds issued by the following entities. The Company owns, directly or indirectly, 100% of each such entity. California Water Service Company a.5.50% First Mortgage Bonds due 2040, Series PPP, issued in 2010

February 24, 2023 EX-3.1

Amended and Restated Bylaws of California Water Service Group (Exhibit 3.1 to the Current Report on Form 8-K filed February 24, 2023)

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (A DELAWARE CORPORATION) AS AMENDED EFFECTIVE FEBRUARY 22, 2023 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (a Delaware corporation) as amended effective February 22, 2023 Article 1. OFFICES Section 1.1. REGISTERED OFFICE. The registered office of the corporation shall be fixed in the certificate of incorpo

February 24, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 22, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 16, 2023 EX-99.1

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Exhibit 99.1 February 15, 2023 For immediate release California Water Service Receives Approval for Interim Rate Increases Effective April 15, 2023 SAN JOSE, Calif.—California Water Service (Cal Water), a subsidiary of California Water Service Group (Group) (NYSE: CWT), has received a ruling in its General Rate Case (GRC)—pending before the California Public Utilities Commission (CPUC)—that approv

February 16, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 15, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 9, 2023 SC 13G/A

CWT / California Water Service Group / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0494-californiawaterservic.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: California Water Service Group Title of Class of Securities: Common Stock CUSIP Number: 130788102 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriat

February 2, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 1, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 26, 2023 EX-99.1

New Mexico Water Service to Acquire Lake Section Water Company Acquisition Would Expand Utility to Almost 16,000 Connections

EX-99.1 2 tm234534d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 A subsidiary of California Water Service Group 401 Horner Street, Rio Communities, NM 87002 January 26, 2023 Contact: Yvonne Kingman, 310-257-1434 (media) Tom Smegal, 408-367-8200 (analysts) For Immediate Release New Mexico Water Service to Acquire Lake Section Water Company Acquisition Would Expand Utility to Almost 16,000 Connections RIO C

January 26, 2023 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 26, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 25, 2023 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 25, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 25, 2023 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 312TH CONSECUTIVE QUARTERLY DIVIDEND AND 56TH CONSECUTIVE ANNUAL DIVIDEND INCREASE

Exhibit 99.1 January 25, 2023 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 312TH CONSECUTIVE QUARTERLY DIVIDEND AND 56TH CONSECUTIVE ANNUAL DIVIDEND INCREASE SAN JOSE, Calif. – At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 312th consecutive quarterly dividend, increasing the annual dividend by $0.0

January 17, 2023 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 12, 2023 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

December 6, 2022 EX-99.1

# # #

Exhibit 99.1 December 6, 2022 For immediate release California Water Service Group Promotes Thomas A. Scanlon to Corporate Controller and Principal Accounting Officer and Justin B. Skarb to Vice President, Government and Community Affairs SAN JOSE, Calif. – California Water Service Group (NYSE : CWT) today announced the promotion of Thomas A. Scanlon to Corporate Controller and Principal Accountin

December 6, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): November 16, 2022 CALIFORNIA WATE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): November 16, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

October 27, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 27, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 27, 2022 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended September 30, 2022 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

October 27, 2022 EX-99.2

0 Third Quarter 2022 Results Presentation October 27, 2022

Exhibit 99.2 0 Third Quarter 2022 Results Presentation October 27, 2022 INVESTOR RELATIONS 1 Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("Act"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" tre

October 27, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

October 27, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES THIRD QUARTER 2022 RESULTS

Exhibit 99.1 October 27, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES THIRD QUARTER 2022 RESULTS SAN JOSE, CA ? California Water Service Group (NYSE: CWT) ( ?Group?) today announced net income attributable to Group of $55.9 million or $1.03 earnings per diluted common share for the third quarter of 2022, compared to a net income attributable to Group of $62.4 million or $1.2

October 26, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 26, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 26, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 311TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 October 26, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 311TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 311th consecutive quarterly dividend in the amount of $0.25 per common share. It will be payable on November 18, 2022 to s

October 5, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): September 30, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fi

October 4, 2022 EX-99.1

California Water Service Group Announces Board Appointments

Exhibit 99.1 October 4, 2022 For immediate release California Water Service Group Announces Board Appointments SAN JOSE, Calif. ? California Water Service Group (NYSE: CWT) today announced that its Board has nominated Terry P. Bayer to assume the role of Lead Independent Director, effective immediately. As former Chief Operating Officer of Molina Healthcare, Inc., Bayer brings senior leadership, f

October 4, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): September 28, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fi

September 7, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): September 2, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

August 17, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): August 16, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

August 17, 2022 EX-99.1

# # #

Exhibit 99.1 August 17, 2022 For immediate release BVRT Utility Holding Company Subsidiary Enters into Long-Term Water Supply Agreement, Expanding Customer Growth Opportunities Near Austin, Texas California Water Service Group Subsidiary Texas Water Service, Majority Investor of BVRT Utility Holding Company, Grows Investment in Lone Star State SAN JOSE, Calif.? California Water Service Group (NYSE

July 28, 2022 EX-3.3

Certificate of Amendment to Amended Certificate of Incorporation of California Water Service Group (Exhibit 3.3 to the Quarterly Report on Form 10-Q filed July 28, 2022)

Exhibit 3.3 CERTIFICATE OF AMENDMENT TO AMENDED CERTIFICATE OF INCORPORATION OF CALIFORNIA WATER SERVICE GROUP California Water Service Group, a corporation organized and existing under the General Corporation Law of the State of Delaware, does hereby certify: 1.The name of the Corporation is: ?California Water Service Group? 2.The Certificate of Incorporation, as amended June 8, 2011 (the ?Amende

July 28, 2022 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended June 30, 2022 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the S

July 28, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2022 RESULTS

Exhibit 99.1 July 28, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2022 RESULTS SAN JOSE, CA ? California Water Service Group (NYSE: CWT) ( ?Group?) today announced net income attributable to Group of $19.5 million or $0.36 earnings per diluted common share for the second quarter of 2022, compared to net income attributable to Group of $38.2 million or $0.75 e

July 28, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 28, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-1

July 28, 2022 EX-99.2

0 Second Quarter 2022 Results Presentation July 28, 2022

Exhibit 99.2 0 Second Quarter 2022 Results Presentation July 28, 2022 INVESTOR RELATIONS Forward - Looking Statements This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("Act"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treatme

July 27, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 27, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 27, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 310TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 July 27, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 310TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 310th consecutive quarterly dividend in the amount of $0.25 per common share. It will be payable on August 19, 2022 to stockh

June 23, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 22, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

June 7, 2022 8-K/A

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 6, 2022 (May 25, 2022) CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Co

May 27, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 25, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

April 29, 2022 EX-FILING FEES

Calculation of Filing Fee Tables 424(b)(5) (Form Type) California Water Service Group (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities

? Exhibit 107? Calculation of Filing Fee Tables 424(b)(5) (Form Type) California Water Service Group (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities ? ? ? ? ? ? Security Type ? ? ? Security Class Title ? ? ? Fee Calculation or Carry Forward Rule ? ? ? Amount Registered ? ? ? Proposed Maximum Offering Price Per Unit ? ? ? Maximum Aggregate Offering Price ? ? ? Fee Rate ? ? ? Amount of Registration Fee ? ? ? ? Newly Registered Securities ? ? ? ? Fees to Be Paid ? ? ? Equity ? ? ? Common Stock, par value $0.

April 29, 2022 424B5

California Water Service Group Common Stock Having an Aggregate Offering Price of up to $350,000,000

TABLE OF CONTENTS? ?Filed Pursuant to Rule 424(b)(5) ?Registration No. 333-264542? PROSPECTUS SUPPLEMENT (To Prospectus dated April 28, 2022) California Water Service Group Common Stock Having an Aggregate Offering Price of up to $350,000,000? ? We have entered into an equity distribution agreement (the ?equity distribution agreement?) with Morgan Stanley & Co. LLC, Robert W. Baird & Co. Incorpora

April 29, 2022 EX-1.1

Equity Distribution Agreement, dated as of April 29, 2022, between California Water Service Group and Morgan Stanley & Co. LLC, Robert W. Baird & Co. Incorporated, Blaylock Van, LLC, Wells Fargo Securities, LLC, Janney Montgomery Scott LLC and Samuel A. Ramirez & Company, Inc. (incorporated by reference to the Company’s Form 8-K filed April 29, 2022)

Exhibit 1.1 CALIFORNIA WATER SERVICE GROUP COMMON STOCK, PAR VALUE $0.01 PER SHARE EQUITY DISTRIBUTION AGREEMENT April 29, 2022 April 29, 2022 To: ?Morgan Stanley & Co. LLC ????????1585 Broadway New York, NY 10036 Robert W. Baird & Co. Incorporated 777 E. Wisconsin Avenue Milwaukee, WI 53202 Blaylock Van, LLC 600 Lexington Avenue, Floor 3 New York, NY 10022 Wells Fargo Securities, LLC 375 Park Ave

April 29, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 29, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 28, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 28, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 28, 2022 S-3ASR

As filed with the Securities and Exchange Commission on April 28, 2022

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on April 28, 2022 Registration No.

April 28, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 1-

April 28, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES FIRST QUARTER 2022 RESULTS

Exhibit 99.1 April 28, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES FIRST QUARTER 2022 RESULTS SAN JOSE, CA ? California Water Service Group (NYSE: CWT) ( ?Group?) today announced net income attributable to Group of $1.1 million and diluted earnings per share of $0.02 for the first quarter of 2022, compared to net loss attributable to Group of $3.0 million and diluted loss p

April 28, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) California Water Service Group (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

April 28, 2022 EX-99.2

0 First Quarter 2022 Results Presentation April 28, 2022

Exhibit 99.2 0 First Quarter 2022 Results Presentation April 28, 2022 INVESTOR RELATIONS Forward - Looking Statements 1 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("Act"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treat

April 28, 2022 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended March 31, 2022 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the

April 27, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 309TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 April 27, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 309TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 309th consecutive quarterly dividend in the amount of $0.25 per common share. It will be payable on May 20, 2022 to stockhol

April 27, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 27, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 26, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): April 26, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

April 26, 2022 EX-99.1

HAWAII WATER SERVICE TO ACQUIRE KuKUI’ULA SOUTH SHORE COMMUNITY SERVICES

Exhibit 99.1 A subsidiary of California Water Service Group P.O. Box 384809, Waikoloa, HI 96738 April 26, 2022 Contact: Yvonne Kingman, 310-257-1434 (media) Tom Smegal, 408-367-8200 (analysts) For Immediate Release HAWAII WATER SERVICE TO ACQUIRE KuKUI?ULA SOUTH SHORE COMMUNITY SERVICES waikoloa, Hawaii?Expanding its footprint on the island of Kauai, Hawaii Water Service (Hawaii Water) announced t

April 15, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

DEFA14A 1 tm223371d7defa14a.htm DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant x Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (a

April 13, 2022 DEF 14A

Definitive Proxy Statement on Schedule 14A filed on April 13, 2022

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by Rule

April 1, 2022 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? ? Confidential, for Use of the Commission Only (as permitted by Rule

March 29, 2022 EX-99.1

NEW MEXICO WATER SERVICE TO ACQUIRE MONTEREY WATER COMPANY

Exhibit 99.1 A subsidiary of California Water Service Group 401 Horner Street, Rio Communities, NM 87002 March 22, 2022 Contact: Yvonne Kingman, 310-257-1434 (media) Tom Smegal, 408-367-8200 (analysts) For Immediate Release NEW MEXICO WATER SERVICE TO ACQUIRE MONTEREY WATER COMPANY RIO COMMUNITIES, N.M.?New Mexico Water Service (New Mexico Water), a subsidiary of California Water Service Group (NY

March 29, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): March 22, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

February 24, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

February 24, 2022 EX-22.1

List of Subsidiary Issuers and Guarantors

Exhibit 22.1 List of Subsidiary Issuers and Guarantors As of December 31, 2021, the Company is the guarantor of the registered mortgage bonds issued by the following entities. The Company owns, directly or indirectly, 100% of each such entity. California Water Service Company a.5.50% First Mortgage Bonds due 2040, Series PPP, issued in 2010

February 24, 2022 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned hereby certifies, in his capacity as an officer of California Water Service Group, that the Annual Report of California Water Service Group on Form 10-K for the period ende

February 24, 2022 EX-4.17

Description of securities

Exhibit 4.17 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 The following description of the common stock of California Water Service Group (the ?Group,? ?us,? ?our? or ?we?) does not purport to be complete and is subject to, and qualified in its entirety by, our certificate of incorporation, as amended (?certificate?), and our a

February 24, 2022 EX-99.2

0 Full Year & Fourth Quarter 2021 Results Presentation February 24, 2022

Exhibit 99.2 0 Full Year & Fourth Quarter 2021 Results Presentation February 24, 2022 INVESTOR RELATIONS Such words as would, expects, intends, plans, believes, may, estimates, assumes, anticipates, projects, predicts, targets, forecasts, priorities, outlook or variations of such words or similar expressions are intended to identify forward - looking statements. The forward - looking stateme nts a

February 24, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 24, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 24, 2022 EX-21.0

Subsidiaries of the Registrant

Exhibit 21 Subsidiaries of the Registrant Subsidiary Name State of Incorporation Business Name California Water Service Company California California Water Service Company CWS Utility Services California CWS Utility Services New Mexico Water Service Company New Mexico New Mexico Water Service Company Washington Water Service Company Washington Washington Water Service Company Hawaii Water Service Company, Inc.

February 24, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2021 EARNINGS FOR YEAR AND FOURTH QUARTER

Exhibit 99.1 February 24, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES 2021 EARNINGS FOR YEAR AND FOURTH QUARTER SAN JOSE, CA ? California Water Service Group (NYSE: CWT) ( ?Company?) today announced net income attributable to CWT of $101.1 million and diluted earnings per share of $1.96 for 2021, compared to net income attributable to CWT of $96.8 million and diluted earnin

February 16, 2022 EX-99.1

Washington Water Service Enters into Agreement to Acquire Driftwood Valley Water

Exhibit 99.1 14519 Peacock Hill NW, Gig Harbor, WA 98332 February 15, 2022 Contact: Yvonne Kingman, (310) 257-1434 For Immediate Release Washington Water Service Enters into Agreement to Acquire Driftwood Valley Water GIG HARBOR, Wash.?Washington Water Service (Washington Water), a subsidiary of California Water Service Group (Group), signed an agreement to acquire the water utility assets of Drif

February 16, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 14, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fil

February 9, 2022 SC 13G/A

CWT / California Water Service Group / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: California Water Service Group Title of Class of Securities: Common Stock CUSIP Number: 130788102 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule

February 3, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): February 2, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

February 3, 2022 EX-99.1

# # #

Exhibit 99.1 February 3, 2022 For immediate release New Mexico Water Service Receives Public Regulation Commission Approval to Acquire Hi Mesa Water System SAN JOSE, Calif. ? California Water Service Group (Group) (NYSE: CWT) subsidiary New Mexico Water Service (New Mexico Water) received approval yesterday by the New Mexico Public Regulation Commission to acquire the assets of Valencia Mesa, LLC,

January 27, 2022 EX-99.1

CALIFORNIA WATER SERVICE SECURES FUNDING TO RELIEVE CUSTOMERS OF PAST-DUE WATER BILL DEBT ACCUMULATED DURING PANDEMIC Utility Applied for Funds from California Water & Wastewater Arrearage Payment Program

Exhibit 99.1 1720 N. First Street, San Jose, CA 95112 January 27, 2022 Contact: Yvonne Kingman, 310-257-1434 For Immediate Release CALIFORNIA WATER SERVICE SECURES FUNDING TO RELIEVE CUSTOMERS OF PAST-DUE WATER BILL DEBT ACCUMULATED DURING PANDEMIC Utility Applied for Funds from California Water & Wastewater Arrearage Payment Program SAN JOSE, Calif.?Financially strapped customers in California wi

January 27, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 27, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 26, 2022 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): January 26, 2022 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

January 26, 2022 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 308TH CONSECUTIVE QUARTERLY DIVIDEND AND 55TH CONSECUTIVE ANNUAL DIVIDEND INCREASE

Exhibit 99.1 January 26, 2022 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 308TH CONSECUTIVE QUARTERLY DIVIDEND AND 55TH CONSECUTIVE ANNUAL DIVIDEND INCREASE SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 308th consecutive quarterly dividend, increasing the annual dividend by $0.0

October 28, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Numbe

October 28, 2021 EX-99.2

0 Third Quarter 2021 Results Presentation October 28, 2021

Exhibit 99.2 0 Third Quarter 2021 Results Presentation October 28, 2021 INVESTOR RELATIONS Forward - Looking Statements 1 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("Act"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" tre

October 28, 2021 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended September 30, 2021 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of

October 28, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 28, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 28, 2021 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES YEAR TO DATE SEPTEMBER 30, 2021 AND THIRD QUARTER 2021 RESULTS

Exhibit 99.1 October 28, 2021 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES YEAR TO DATE SEPTEMBER 30, 2021 AND THIRD QUARTER 2021 RESULTS SAN JOSE, CA ? California Water Service Group (NYSE: CWT) ( ?Company?) today announced net income of $97.6 million or $1.91 earnings per diluted common share for the nine-month period ended September 30, 2021, compared to net income of $81.3 mi

October 27, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): October 27, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file

October 27, 2021 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 307TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 October 27, 2021 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 307TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 307th consecutive quarterly dividend in the amount of $0.23 per common share. It will be payable on November 19, 2021 to s

September 29, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): September 29, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission fi

September 29, 2021 EX-3.1

Amended and Restated Bylaws of California Water Service Group

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (A DELAWARE CORPORATION) AS AMENDED EFFECTIVE SEPTEMBER 29, 2021 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (a Delaware corporation) as amended effective September 29, 2021 Article 1. OFFICES Section 1.1. REGISTERED OFFICE. The registered office shall be c/o National Registered Agents, Inc., 9 East Loocker

August 10, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): August 5, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file n

August 10, 2021 EX-99.1

# # #

Exhibit 99.1 August 9, 2021 For immediate release California Water Service Receives Regulatory Approval to Acquire Preserve at Millerton Water, Wastewater Systems SAN JOSE, Calif. ? California Water Service, the largest subsidiary of California Water Service Group (Group) (NYSE: CWT), received approval late last week from the California Public Utilities Commission (CPUC) to acquire the water and w

July 29, 2021 EX-99.2

0 Second Quarter 2021 Results Presentation July 29, 2021

Exhibit 99.2 0 Second Quarter 2021 Results Presentation July 29, 2021 INVESTOR RELATIONS Forward - Looking Statements 1 This presentation contains forward - looking statements within the meaning established by the Private Securities Litigation Reform Act of 1995 ("Act"). The forward - looking statements are intended to qualify under provisions of the federal securities laws for "safe harbor" treat

July 29, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 28, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 29, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 or ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-1

July 29, 2021 EX-99.1

CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2021 RESULTS

EX-99.1 2 tm2123605d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 July 29, 2021 For immediate release CALIFORNIA WATER SERVICE GROUP ANNOUNCES SECOND QUARTER 2021 RESULTS SAN JOSE, CA – California Water Service Group (NYSE: CWT) ( “Company”) today announced net income of $38.2 million or $0.75 earnings per diluted common share for the second quarter of 2021, compared to a net income of $5.3 million or $0.

July 29, 2021 EX-32.0

Chief Executive Officer and Chief Financial Officer Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 32 CERTIFICATION OF CEO AND CFO PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned certifies that this quarterly report on Form 10-Q for the period ended June 30, 2021 fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the S

July 28, 2021 EX-99.1

CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 306TH CONSECUTIVE QUARTERLY DIVIDEND

Exhibit 99.1 July 28, 2021 For immediate release CALIFORNIA WATER SERVICE GROUP BOARD OF DIRECTORS DECLARES 306TH CONSECUTIVE QUARTERLY DIVIDEND SAN JOSE, Calif. ? At its meeting today, the California Water Service Group (NYSE: CWT) Board of Directors declared the company's 306th consecutive quarterly dividend in the amount of $0.23 per common share. It will be payable on August 20, 2021, to stock

July 28, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 28, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

July 2, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): July 1, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

July 2, 2021 EX-99.1

# # #

Exhibit 99.1 July 2, 2021 For immediate release California Water Service Group Files Proposal to Invest $1.02 Billion in its California Water Systems Between 2022 and 2024; Proposes Innovative Rate Design in Response to Regulatory Changes SAN JOSE, Calif. ? As part of its commitment to provide a reliable supply of safe, clean water and affordable service to the communities it serves, California Wa

June 11, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): June 11, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file nu

June 11, 2021 EX-99.1

HAWAII WATER SERVICE TO ACQUIRE HOH UTILITIES COMPANY Acquisition Expands Utility’s Footprint onto Island of Kauai

Exhibit 99.1 A subsidiary of California Water Service Group P.O. Box 384809, Waikoloa, HI 96738 June 11, 2021 Contact: Yvonne Kingman, 310-257-1434 (media) Tom Smegal, 408-367-8200 (analysts) For Immediate Release HAWAII WATER SERVICE TO ACQUIRE HOH UTILITIES COMPANY Acquisition Expands Utility?s Footprint onto Island of Kauai waikoloa, Hawaii? Hawaii Water Service (Hawaii Water), a subsidiary of

May 27, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (date of earliest event reported): May 26, 2021 CALIFORNIA WATER SERVICE GROUP (Exact name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-13883 (Commission file num

May 27, 2021 EX-3.1

Amended and Restated Bylaws of California Water Service Group

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (A DELAWARE CORPORATION) AS AMENDED EFFECTIVE MAY 26, 2021 AMENDED AND RESTATED BYLAWS OF CALIFORNIA WATER SERVICE GROUP (a Delaware corporation) as amended effective May 26, 2021 Article 1. OFFICES Section 1.1. REGISTERED OFFICE. The registered office shall be c/o National Registered Agents, Inc., 9 East Loockerman Street,

May 13, 2021 EX-10.1

Sixty-Third Supplemental Indenture CALIFORNIA WATER SERVICE COMPANY and U.S. BANK NATIONAL ASSOCIATION as Dated as of May 11, 2021 TABLE OF CONTENTS

Exhibit 10.1 Recording requested by and when recorded mail to: Gibson, Dunn & Crutcher LLP 333 South Grand Avenue Los Angeles, CA 90071-3197 Attn: Andrew Cheng Sixty-Third Supplemental Indenture CALIFORNIA WATER SERVICE COMPANY and U.S. BANK NATIONAL ASSOCIATION as Trustee Dated as of May 11, 2021 TABLE OF CONTENTS Page ARTICLE I DEFINITIONS 4 SECTION 1.01. Definitions 4 ARTICLE II CERTAIN TERMS A

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