As of April 28, 2026, California Water Service's top three insider holders are Martin A Kropelnicki (Chairman President Ceo, 148.83K shares), Richard P Magnuson (Director, 59.73K shares), Thomas F Iii Smegal (Vp, Cfo Treasurer, 46.78K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Martin A Kropelnicki | Chairman President Ceo | 148,828 | 0 | 09 Mar, 2026 |
| Richard P Magnuson | - | 56,413 | 3,320 | 03 Mar, 2022 |
| Thomas F Iii Smegal | Vp, Cfo Treasurer | 46,777 | 0 | 05 Jun, 2023 |
| Paul G. Townsley | Vp, Rates Reg Matters | 31,540 | 0 | 05 Jun, 2023 |
| Thomas M Krummel | - | 27,505 | 0 | 05 Mar, 2026 |
| Lynne P Mcghee | Vp, General Counsel | 26,981 | 0 | 05 Jun, 2023 |
| Ronald D Webb | Vp, Human Resources | 26,580 | 0 | 11 Mar, 2025 |
| Gregory E Aliff | - | 26,395 | 0 | 05 Mar, 2026 |
| Shannon C Dean | Sr. Vp, Cust Svc Chief Sust | 23,816 | 0 | 09 Mar, 2026 |
| Michael B Luu | Sr. Vp Corp Svcs Chief Risk | 23,655 | 0 | 24 Mar, 2026 |
| Peter C Nelson | Chairman Ceo | 20,420 | 0 | 09 Mar, 2023 |
| Lester A Snow | - | 19,416 | 0 | 05 Mar, 2026 |
| Carol M Pottenger | - | 19,187 | 0 | 05 Mar, 2026 |
| Shelly Marian Esque | - | 18,331 | 0 | 05 Mar, 2026 |
| Terry Bayer | - | 16,257 | 0 | 03 Mar, 2022 |
| Patricia K Wagner | - | 15,214 | 0 | 05 Mar, 2026 |
| Scott L Morris | - | 15,209 | 0 | 05 Mar, 2026 |
| Elissa Y Ouyang | Vp Facilities Fleet Procure | 15,066 | 0 | 09 Mar, 2026 |
| Greg A Milleman | Vp Rates Regulatory Affairs | 13,387 | 0 | 09 Mar, 2026 |
| Michelle R Mortensen | Vp Corp Sect Chief Of Staff | 13,101 | 0 | 09 Mar, 2026 |
| Robert J Kuta | Vp, Engineering | 12,805 | 0 | 05 Jun, 2023 |
| Yvonne Aida Maldonado | - | 12,635 | 0 | 05 Mar, 2026 |
| Michael S Jr Mares | Vice President, Operations | 8,525 | 0 | 24 Mar, 2026 |
| Todd Kenneth Peters | Vice President, Engineering | 8,420 | 0 | 09 Mar, 2026 |
| Jeffrey Kightlinger | - | 8,355 | 0 | 05 Mar, 2026 |
| Sophie Marwieh James | Vp Water Qual Envir Affairs | 8,327 | 0 | 09 Mar, 2026 |
| Thomas A Scanlon | Vp, Corporate Controller Cao | 5,783 | 0 | 09 Mar, 2026 |
| Kenneth G Jenkins | Vp Water Res Plan Sustain | 5,329 | 0 | 09 Mar, 2026 |
| Shawn C Bunting | Sr. Vp, Gc And Business Dev | 4,853 | 0 | 09 Mar, 2026 |
| Kenneth G Jenkins | Vp, Water Res. Plan Sustain | 3,890 | 0 | 10 Jun, 2025 |
| Kristan A Hamner | Vp, Chief Human Resource Offcr | 2,943 | 0 | 05 Mar, 2026 |
| David B Healey | Vp, Ceo And Treasurer | 2,381 | 0 | 05 Mar, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 20 Mar, 2026 | Michael B Luu | Common Stock | D | 740 | $44.53 | 23,655 | D | S |
| 20 Mar, 2026 | Michael S Jr Mares | Common Stock | D | 3,892 | $44.00 | 8,525 | D | S |
| 05 Mar, 2026 | Shannon C Dean | Common Stock | D | 80 | $45.78 | 23,509 | D | F |
| 05 Mar, 2026 | Kenneth G Jenkins | Common Stock | D | 42 | $45.78 | 5,095 | D | F |
| 05 Mar, 2026 | Michael S Jr Mares | Common Stock | D | 75 | $45.78 | 12,070 | D | F |
| 05 Mar, 2026 | Thomas A Scanlon | Common Stock | D | 34 | $45.78 | 5,487 | D | F |
| 05 Mar, 2026 | Shawn C Bunting | Common Stock | D | 76 | $45.78 | 4,574 | D | F |
| 05 Mar, 2026 | Todd Kenneth Peters | Common Stock | D | 44 | $45.78 | 8,202 | D | F |
| 05 Mar, 2026 | Michael B Luu | Common Stock | D | 76 | $45.78 | 23,968 | D | F |
| 05 Mar, 2026 | Greg A Milleman | Common Stock | D | 73 | $45.78 | 13,030 | D | F |
| 05 Mar, 2026 | Sophie Marwieh James | Common Stock | D | 57 | $45.78 | 8,038 | D | F |
| 05 Mar, 2026 | Elissa Y Ouyang | Common Stock | D | 74 | $45.78 | 14,711 | D | F |
| 05 Mar, 2026 | Michelle R Mortensen | Common Stock | D | 80 | $45.78 | 12,798 | D | F |
| 05 Mar, 2026 | Martin A Kropelnicki | Common Stock | D | 493 | $45.78 | 146,523 | D | F |
| 07 Mar, 2026 | Michelle R Mortensen | Common Stock | A | 900 | $0.00 | 13,698 | D | A |
| 07 Mar, 2026 | Shawn C Bunting | Common Stock | A | 750 | $0.00 | 5,324 | D | A |
| 07 Mar, 2026 | Thomas A Scanlon | Common Stock | A | 548 | $0.00 | 6,035 | D | A |
| 07 Mar, 2026 | Michael S Jr Mares | Common Stock | A | 900 | $0.00 | 12,970 | D | A |
| 07 Mar, 2026 | Kenneth G Jenkins | Common Stock | A | 548 | $0.00 | 5,643 | D | A |
| 07 Mar, 2026 | Elissa Y Ouyang | Common Stock | A | 900 | $0.00 | 15,611 | D | A |