| $75M | ||
| $9M | ||
| $8M | ||
| $5M | ||
| $2M | ||
| $777,072 |
Buys | $23,540 | 1 | 14 |
Sells | $508,666 | 6 | 86 |
| Lynch James Patrick | SVP CFO and Treasurer | 1 | $23,540 | 0 | $0 | $23,540 |
| Luu Michael B | Sr. VP Corp Svcs & Chief Risk | 0 | $0 | 1 | $32,945 | $-32,945 |
| Mortensen Michelle R | VP, Corp Sec &Chief of Staff | 0 | $0 | 1 | $40,046 | $-40,046 |
| Snow Lester A | director | 0 | $0 | 2 | $104,212 | $-104,212 |
| Krummel Thomas M | director | 0 | $0 | 1 | $160,214 | $-160,214 |
| Mares Michael S JR | Vice President, Operations | 0 | $0 | 1 | $171,248 | $-171,248 |
California Water Service Group (CWT), through its various subsidiaries, operates as a water utility, delivering essential water services and related offerings across several states, including California, Washington, New Mexico, Hawaii, and Texas. The company's operations encompass the entire water supply chain, from procuring, storing, treating, and rigorously testing water to its widespread distribution and ultimate sale. This water is utilized for a diverse array of purposes, spanning domestic consumption, industrial processes, public use, agricultural irrigation, and crucial fire protection. The group serves a substantial customer base, catering to approximately 494,500 connections across 100 communities in California. Moreover, on the Hawaiian islands of Maui and Hawaii, it manages roughly 6,200 water and wastewater customer hookups. In Washington, approximately 36,400 connections receive service in locations such as Tacoma, Olympia, Graham, Spanaway, Puyallup, and Gig Harbor. New Mexico communities like Belen, Los Lunas, Indian Hills, and Elephant Butte are served by roughly 8,600 water and wastewater connections. Beyond its core regulated utility functions, California Water Service Group provides various non-regulated, water-related services. These include the management of water systems for both municipal and private entities, the operation of recycled water distribution networks, and specialized services such as water system operation, meter reading, and billing for external companies and public bodies. Furthermore, it generates income by leasing communication antenna sites on its land to telecommunications companies, and it manages the billing of optional third-party insurance schemes for its residential clients. Laboratory services are also part of its offerings. Lastly, the organization handles wastewater collection and purification processes. Established in 1926, the company's corporate headquarters are situated in San Jose, California.
Over the last 12 months, insiders at California Water Service Group have bought $23,540 and sold $508,666 worth of California Water Service Group stock.
On average, over the past 5 years, insiders at California Water Service Group have bought $23,540 and sold $554,786 worth of stock each year.
Highest buying activity among insiders over the last 12 months: Lynch James Patrick (SVP CFO and Treasurer) — $23,540.
The last purchase of 550 shares for transaction amount of $23,540 was made by Lynch James Patrick (SVP CFO and Treasurer) on 2025‑12‑10.
| 2026-05-27 | Sale | Snow Lester A | director | 1,100 0.0018% | $44.00 | $48,400 | +3.97% | |
| 2026-05-21 | Sale | Krummel Thomas M | director | 3,700 0.0062% | $43.30 | $160,214 | +3.88% | |
| 2026-03-20 | Sale | Luu Michael B | Sr. VP Corp Svcs & Chief Risk | 739.85 0.0013% | $44.53 | $32,945 | +2.71% | |
| 2026-03-20 | Sale | Mares Michael S JR | Vice President, Operations | 3,892 0.0065% | $44.00 | $171,248 | +2.71% | |
| 2025-12-23 | Sale | Mortensen Michelle R | VP, Corp Sec &Chief of Staff | 924 0.0016% | $43.34 | $40,046 | +4.38% | |
| 2025-12-10 | Lynch James Patrick | SVP CFO and Treasurer | 550 0.0009% | $42.80 | $23,540 | +4.44% | ||
| 2025-06-12 | Sale | Snow Lester A | director | 1,200 0.002% | $46.51 | $55,812 | -1.51% | |
| 2024-11-22 | Sale | Luu Michael B | Sr. VP Corp Svcs & Chief Risk | 985 0.0017% | $51.50 | $50,728 | -8.83% | |
| 2024-09-04 | Sale | Krummel Thomas M | director | 555 0.0009% | $55.09 | $30,575 | -12.90% | |
| 2024-08-21 | Sale | Krummel Thomas M | director | 555 0.0009% | $54.33 | $30,153 | -11.53% | |
| 2024-08-07 | Sale | Krummel Thomas M | director | 555 0.0009% | $52.91 | $29,364 | -9.42% | |
| 2024-07-17 | Sale | Krummel Thomas M | director | 555 0.001% | $52.99 | $29,409 | -6.62% | |
| 2024-07-11 | Sale | Krummel Thomas M | director | 1,654 0.003% | $50.07 | $82,816 | -3.20% | |
| 2024-05-15 | Sale | Krummel Thomas M | director | 555 0.001% | $53.26 | $29,557 | -5.30% | |
| 2024-05-01 | Sale | Krummel Thomas M | director | 2,220 0.0039% | $50.00 | $111,000 | +2.32% | |
| 2024-01-03 | Sale | Krummel Thomas M | director | 555 0.001% | $51.90 | $28,805 | -2.32% | |
| 2023-12-20 | Sale | Krummel Thomas M | director | 555 0.001% | $53.45 | $29,665 | -2.95% | |
| 2023-12-12 | Sale | Mortensen Michelle R | Corporate Secretary | 675 0.0012% | $52.56 | $35,478 | -2.44% | |
| 2023-11-15 | Sale | Krummel Thomas M | director | 555 0.001% | $51.77 | $28,731 | -0.21% | |
| 2023-11-02 | Sale | Krummel Thomas M | director | 2,220 0.0038% | $50.00 | $111,000 | +0.87% |
| Krummel Thomas M | director | 23805 0.0398% | $1.08M | 4 | 15 | +4.47% |
| Luu Michael B | Sr. VP Corp Svcs & Chief Risk | 23655 0.0395% | $1.07M | 0 | 7 | |
| Snow Lester A | director | 18316 0.0306% | $830,630.60 | 3 | 7 | +3.96% |
| Mortensen Michelle R | VP, Corp Sec &Chief of Staff | 11512 0.0192% | $522,060.13 | 0 | 4 | |
| Mares Michael S JR | Vice President, Operations | 8525 0.0142% | $386,590.61 | 0 | 1 | |
| Lynch James Patrick | SVP CFO and Treasurer | 4619 0.0077% | $209,467.12 | 1 | 0 | |
| MCFARLANE CHRISTINE L | VP & Chief Admin Officer | 55139 0.0921% | $2.5M | 4 | 2 | +4.28% |
| FOY ROBERT W | director | 53187 0.0889% | $2.41M | 3 | 0 | +5.16% |
| FERRARO FRANCIS S | Retired Officer | 51834 0.0866% | $2.35M | 4 | 3 | +4.28% |
| MAGNUSON RICHARD P | director | 51344 0.0858% | $2.33M | 4 | 1 | +4.28% |
| KROPELNICKI MARTIN A | President & CEO | 50439 0.0843% | $2.29M | 5 | 1 | +7.66% |
| Rossi Michael J | Retired Vice President | 49956 0.0835% | $2.27M | 4 | 0 | +4.28% |
| EKSTROM PAUL G | VP CS, HR AND IT | 43678 0.073% | $1.98M | 4 | 4 | +5.1% |
| VERA GEORGE A | director | 41514 0.0694% | $1.88M | 173 | 0 | +6.33% |
| BREED CALVIN L | Controller, Retired | 39859 0.0666% | $1.81M | 3 | 5 | +5.16% |
| Smegal Thomas F III | VP, CFO & Treasurer | 37504 0.0627% | $1.7M | 4 | 0 | +4.28% |
| GUZZETTA ROBERT | Retired Officer | 30016 0.0501% | $1.36M | 4 | 3 | +4.28% |
| GUILES EDWIN A | director | 26357 0.044% | $1.2M | 5 | 0 | +9.22% |
| McGhee Lynne P | VP, General Counsel | 25417 0.0425% | $1.15M | 5 | 7 | +2.48% |
| MEIER LINDA R | director | 24480 0.0409% | $1.11M | 4 | 0 | +4.28% |
| BROWN DOUGLAS M | director | 24341 0.0407% | $1.1M | 4 | 0 | +4.28% |
| HILL BONNIE GUITON | director | 17638 0.0295% | $799,883.30 | 6 | 2 | +5.46% |
| BAYER TERRY | director | 14692 0.0245% | $666,282.20 | 1 | 1 | +28.95% |
| NELSON PETER C | director | 14283 0.0239% | $647,734.05 | 4 | 16 | +4.28% |
| Healey David B | VP, Controller | 14225 0.0238% | $645,103.75 | 2 | 20 | +3.86% |
| Kuta Robert J | VP, Engineering | 12916 0.0216% | $585,761.91 | 0 | 6 | |
| KARRAKER DAVID R | VP, Customer Svc & IT | 10435 0.0174% | $473,227.25 | 2 | 0 | +3.94% |
| Treloar Timothy D | VP, Ops and Water Quality | 8492 0.0142% | $385,112.20 | 0 | 1 | |
| DEL GROSSO HELEN R | VP, HR | 7222 0.0121% | $327,517.70 | 2 | 0 | +3.94% |
| Simon Gerald A | Chief Safety & Preparedness | 6712 0.0112% | $304,389.65 | 0 | 1 | |
| Ouyang Elissa Y | Chief Procurement & Lead CI | 6162 0.0103% | $279,434.91 | 0 | 2 | |
| HARRIS EDWARD D JR | director | 5679 0.0095% | $257,542.65 | 2 | 2 | +9.59% |
| Webb Ronald D | VP, Human Resources | 5119 0.0086% | $232,146.65 | 1 | 0 | +11.9% |
| Aliff Gregory E | director | 3593 0.006% | $162,942.55 | 1 | 0 | +28.95% |
| Townsley Paul G. | VP, Rates & Reg Matters | 3001 0.005% | $136,095.35 | 1 | 0 | +1.65% |
| KENNEDY DAVID N | director | 1800 0.003% | $81,630.00 | 1 | 0 | +0.79% |
| Tootle John S | corporate counsel | 293 0.0005% | $13,304.33 | 0 | 3 | |
| TAYLOR RAYMOND H | Vice President, Operations | 0 0% | $0 | 0 | 4 |
| Increased Positions | 137 | +32.85% | 2M | +4.88% |
| Decreased Positions | 176 | -42.21% | 3M | -5.99% |
| New Positions | 35 | New | 549,384 | New |
| Sold Out Positions | 41 | Sold Out | 314,865 | Sold Out |
| Total Postitions | 378 | -9.35% | 50M | -1.11% |
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| Vanguard Group Inc | $314,063.00 | 12.19% | 7.31M | -64,217 | -0.87% | 2025-09-30 |
| T. Rowe Price Investment Management, Inc. | $141,774.00 | 5.5% | 3.3M | +24,493 | +0.75% | 2025-09-30 |
| State Street Corp | $133,188.00 | 5.17% | 3.1M | -82,336 | -2.59% | 2025-09-30 |
| Amundi | $97,780.00 | 3.79% | 2.28M | +369,430 | +19.37% | 2025-09-30 |
| Nuance Investments, Llc | $75,784.00 | 2.94% | 1.76M | +35,844 | +2.07% | 2025-09-30 |
| Geode Capital Management, Llc | $60,832.00 | 2.36% | 1.42M | -797 | -0.06% | 2025-09-30 |
| First Trust Advisors Lp | $60,316.00 | 2.34% | 1.4M | +59,404 | +4.42% | 2025-09-30 |
| Fmr Llc | $60,265.00 | 2.34% | 1.4M | +350,535 | +33.3% | 2025-09-30 |
| Dimensional Fund Advisors Lp | $49,350.00 | 1.92% | 1.15M | -8,991 | -0.78% | 2025-09-30 |