Lester A. Snow Sells 1100 Shares of Common Stock

On May 27, 2026, Lester A. Snow, a director at CALIFORNIA WATER SERVICE GROUP, sold 1100 shares of common stock at a price of $44.00 per share. This transaction was a single trade. Following the sale, Mr. Snow owns 18,316 shares of common stock. The reporting person has undertaken to provide full information regarding the number of shares and prices at which the transaction was effected upon request to the SEC staff, the issuer, or a security holder of the issuer.