<div id="readability-page-1"><div>Kropelnicki Martin A Chairman of the Board of California Water Service Group [CWT] filed a Form 4 on December 9, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:<div><table><tbody><tr><th>Date</th><th>Transaction</th><th>Shares</th><th>Price</th><th>Value</th></tr><tr><td>12/5/25-12/7/25</td><td>Surrender(1)</td><td>877</td><td>$44.88</td><td>$39,360</td></tr><tr><td>12/5/25</td><td>Gift</td><td>3,000</td><td>$0.00</td><td>N/A</td></tr></tbody></table></div>Ending Holdings: 136,254 - Direct<ul><li>(1)</li><li>Surrender of shares back to company to pay option exercise cost and/or resulting tax liability.</li></ul>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data. </div></div>

Chairman Martin A. Kropelnicki of California Water Service Group surrendered 877 shares to cover option exercise costs and tax liabilities, as disclosed in a Form 4 filed with the SEC. Additionally, he gifted 3,000 shares. His ending holdings are 136,254 shares directly. This transaction is part of insider trading activities.

Chmn Kropelnicki Surrenders 877 Of California Water Service Group [CWT]