California Water Service Group (NYSE: CWT) insider transactions
In the twelve months to 10 November 2026, executives and directors of California Water Service Group reported 10 open-market sales of 21,891 shares ($1.0m) and 1 open-market purchase of 550 shares ($23,540), by 8 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 6 November 2026 | Krummel Thomas M | Director | Open-market sale | −3,700 | $50.82 | 16,404 | Form 4 |
| 4 November 2026 | Pottenger Carol M | Director | Open-market sale | −2,657 | $49.92 | 16,530 | Form 4 |
| 4 November 2026 | Shimansky Gregory Dale | VP, Rates & Reg Affairs | Open-market sale | −978 | $50.00 | 446 | Form 4 |
| 5 September 2026 | Kropelnicki Martin A | Chairman President & CEO | Shares withheld for tax | −493 | $50.03 | 147,287 | Form 4 |
| 5 September 2026 | Lynch James Patrick | SVP CFO and Treasurer | Shares withheld for tax | −48 | $50.03 | 6,486 | Form 4 |
| 5 September 2026 | Luu Michael B | SVP Corp Svce & Chief Risk Of | Shares withheld for tax | −68 | $50.03 | 23,744 | Form 4 |
| 5 September 2026 | Mortensen Michelle R | VP Corp Sect, Gov & Assurance | Shares withheld for tax | −73 | $50.03 | 12,807 | Form 4 |
| 5 September 2026 | Dean Shannon C | SVP, Cust Svc & Chief Sust Of | Shares withheld for tax | −72 | $50.03 | 23,613 | Form 4 |
| 5 September 2026 | Ouyang Elissa Y | VP Facilities Fleet Procure IT | Shares withheld for tax | −66 | $50.03 | 14,805 | Form 4 |
| 5 September 2026 | Mares Michael S JR | SVP Operations | Shares withheld for tax | −67 | $50.03 | 8,252 | Form 4 |
| 5 September 2026 | Scanlon Thomas A | VP, Corporate Controller & PAO | Shares withheld for tax | −30 | $50.03 | 5,690 | Form 4 |
| 5 September 2026 | Peters Todd Kenneth | Vice President, Engineering | Shares withheld for tax | −40 | $50.03 | 8,259 | Form 4 |
| 5 September 2026 | Bunting Shawn C | SVP, Chief Legal Officer & BD | Shares withheld for tax | −69 | $50.03 | 4,574 | Form 4 |
| 5 September 2026 | Jenkins Kenneth G | VP Water Res Plan & Sustain | Shares withheld for tax | −38 | $50.03 | 5,126 | Form 4 |
| 5 September 2026 | James Sophie Marwieh | VP Water Qual | Shares withheld for tax | −50 | $50.03 | 8,287 | Form 4 |
| 4 September 2026 | Kropelnicki Martin A | Chairman President & CEO | Shares withheld for tax | −505 | $50.03 | 147,780 | Form 4 |
| 4 September 2026 | Lynch James Patrick | SVP CFO and Treasurer | Shares withheld for tax | −50 | $50.03 | 6,534 | Form 4 |
| 4 September 2026 | Luu Michael B | SVP Corp Svce & Chief Risk Of | Shares withheld for tax | −70 | $50.03 | 23,812 | Form 4 |
| 4 September 2026 | Mortensen Michelle R | VP Corp Sect, Gov & Assurance | Shares withheld for tax | −75 | $50.03 | 12,880 | Form 4 |
| 4 September 2026 | Dean Shannon C | SVP, Cust Svc & Chief Sust Of | Shares withheld for tax | −75 | $50.03 | 23,685 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the California Water Service Group page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.