HAMNER KRISTAN A 4

What Happened

• Kristan Hamner, VP and Chief Human Resource Officer of California Water Service Group (CWT), had 41 shares withheld/surrendered to satisfy tax withholding related to vested restricted stock (RSA). The shares were recorded at $45.24 each, totaling about $1,855. This is a routine tax-withholding disposition rather than an open-market sale or new purchase.

Key Details

• Transaction date: 2026-06-04; Filing date: 2026-06-08 (filed timely).
• Transaction type/code: F — shares withheld to satisfy tax withholding obligations.
• Quantity: 41 shares disposed at $45.24 per share (approx. $1,855).
• Footnote F1: These shares were withheld to satisfy tax withholding from an RSA award granted March 4, 2025.
• Footnote F2 (from filing): Notes that holdings may include shares acquired through the Employee Stock Purchase Program (ESPP) — informational about holdings, not the withholding event.
• Shares owned after transaction: not specified in the provided filing.

Context

• Withholding/surrender to cover taxes on vested restricted stock is common and typically reflects tax obligations, not a discretionary sell motivated by market views. This was not an open-market sale and does not by itself indicate insider sentiment.