NYSE · CIK 0001035201
CWT CALIFORNIA WATER SERVICE GROUP
Insider trading from SEC Form 4. Last filing 34 d ago. Close $45.94 on Oct 9, 2026, +11% from the 52-week low and -12% from the high.
Last 90 days
Net insider value
-$25k
more sold than bought
Buys
0
$0 by 0 insiders
Sells
1
$25k by 1 insider
Insiders on file
20
with a Form 4 at this company
Price and insider trades, last year
CWTOct 9, 2026 · close 45.94
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at CALIFORNIA WATER SERVICE GROUP, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 20Weak | Lester A Snow director sell | $25k 500 shares | -3% | - | |
| 22Weak | Lester A Snow director sell | $56k 1,200 shares | -4% | +13% from low-14% from high | |
| 22Weak | Michael B Luu Sr. VP Corp Svcs & Chief Risk sell | $51k 985 shares | -5% | - |
Transactions
The last 100 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 4, 2026 | Martin A Kropelnicki Chairman President & CEO | FTax withholding Common Stock | -505 | $50.03 | $25k | 147,780 | 34 d ago |
| Sep 4, 2026 | Kristan A Hamner VP, Chief Human Resource Offcr | FTax withholding Common Stock | -42 | $50.03 | $2,101 | 2,979 | 34 d ago |
| Sep 4, 2026 | Michael B Luu SVP Corp Svce & Chief Risk Of | FTax withholding Common Stock | -70 | $50.03 | $3,502 | 23,812 | 34 d ago |
| Sep 4, 2026 | Shawn C Bunting SVP, Chief Legal Officer & BD | FTax withholding Common Stock | -71 | $50.03 | $3,552 | 4,643 | 34 d ago |
| Sep 4, 2026 | Todd Kenneth Peters Vice President, Engineering | FTax withholding Common Stock | -41 | $50.03 | $2,051 | 8,299 | 34 d ago |
| Sep 4, 2026 | James Patrick Lynch SVP CFO and Treasurer | FTax withholding Common Stock | -50 | $50.03 | $2,502 | 6,534 | 34 d ago |
| Sep 4, 2026 | Michelle R Mortensen VP Corp Sect, Gov & Assurance | FTax withholding Common Stock | -75 | $50.03 | $3,752 | 12,880 | 34 d ago |
| Sep 4, 2026 | Sophie Marwieh James VP Water Qual | FTax withholding Common Stock | -51 | $50.03 | $2,552 | 8,337 | 34 d ago |
| Sep 4, 2026 | Thomas A Scanlon VP, Corporate Controller & PAO | FTax withholding Common Stock | -30 | $50.03 | $1,501 | 5,720 | 34 d ago |
| Sep 4, 2026 | Elissa Y Ouyang VP Facilities Fleet Procure IT | FTax withholding Common Stock | -68 | $50.03 | $3,402 | 14,871 | 34 d ago |
| Sep 4, 2026 | Kenneth G Jenkins VP Water Res Plan & Sustain | FTax withholding Common Stock | -64 | $50.03 | $3,202 | 5,164 | 34 d ago |
| Sep 4, 2026 | Michael S Mares JR SVP Operations | FTax withholding Common Stock | -69 | $50.03 | $3,452 | 8,319 | 34 d ago |
| Sep 4, 2026 | Shannon C Dean SVP, Cust Svc & Chief Sust Of | FTax withholding Common Stock | -75 | $50.03 | $3,752 | 23,685 | 34 d ago |
| Sep 5, 2026 | Todd Kenneth Peters Vice President, Engineering | FTax withholding Common Stock | -40 | $50.03 | $2,001 | 8,259 | 34 d ago |
| Sep 5, 2026 | Michael S Mares JR SVP Operations | FTax withholding Common Stock | -67 | $50.03 | $3,352 | 8,252 | 34 d ago |
| Sep 5, 2026 | Michael B Luu SVP Corp Svce & Chief Risk Of | FTax withholding Common Stock | -68 | $50.03 | $3,402 | 23,744 | 34 d ago |
| Sep 5, 2026 | Thomas A Scanlon VP, Corporate Controller & PAO | FTax withholding Common Stock | -30 | $50.03 | $1,501 | 5,690 | 34 d ago |
| Sep 5, 2026 | Michelle R Mortensen VP Corp Sect, Gov & Assurance | FTax withholding Common Stock | -73 | $50.03 | $3,652 | 12,807 | 34 d ago |
| Sep 5, 2026 | Kenneth G Jenkins VP Water Res Plan & Sustain | FTax withholding Common Stock | -38 | $50.03 | $1,901 | 5,126 | 34 d ago |
| Sep 5, 2026 | Sophie Marwieh James VP Water Qual | FTax withholding Common Stock | -50 | $50.03 | $2,502 | 8,287 | 34 d ago |
| Sep 5, 2026 | Shawn C Bunting SVP, Chief Legal Officer & BD | FTax withholding Common Stock | -69 | $50.03 | $3,452 | 4,574 | 34 d ago |
| Sep 5, 2026 | Martin A Kropelnicki Chairman President & CEO | FTax withholding Common Stock | -493 | $50.03 | $25k | 147,287 | 34 d ago |
| Sep 5, 2026 | James Patrick Lynch SVP CFO and Treasurer | FTax withholding Common Stock | -48 | $50.03 | $2,401 | 6,486 | 34 d ago |
| Sep 5, 2026 | Shannon C Dean SVP, Cust Svc & Chief Sust Of | FTax withholding Common Stock | -72 | $50.03 | $3,602 | 23,613 | 34 d ago |
| Sep 5, 2026 | Elissa Y Ouyang VP Facilities Fleet Procure IT | FTax withholding Common Stock | -66 | $50.03 | $3,302 | 14,805 | 34 d ago |
| Sep 1, 2026 | Lester A Snow director | SOpen-market sale Common Stock | -500 | $50.21 | $25k | 17,817 | 41 d ago |
| Sep 5, 2025 | James Patrick Lynch SVP CFO and Treasurer | FTax withholding Common Stock | -48 | $47.09 | $2,260 | 4,117 | Sep 9, 2025 |
| Sep 5, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | FTax withholding Common Stock | -69 | $47.09 | $3,249 | 3,463 | Sep 9, 2025 |
| Sep 5, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust | FTax withholding Common Stock | -73 | $47.09 | $3,438 | 22,330 | Sep 9, 2025 |
| Sep 5, 2025 | Kenneth G Jenkins VP Water Res Plan & Sustain | FTax withholding Common Stock | -38 | $47.09 | $1,789 | 3,852 | Sep 9, 2025 |
| Sep 5, 2025 | Martin A Kropelnicki Chairman President & CEO | FTax withholding Common Stock | -492 | $47.09 | $23k | 140,516 | Sep 9, 2025 |
| Sep 5, 2025 | Michael B Luu SVP Corp Svce & Chief Risk Of | FTax withholding Common Stock | -69 | $47.09 | $3,249 | 22,695 | Sep 9, 2025 |
| Sep 5, 2025 | Sophie Marwieh James VP Water Qual & Envir Affairs | FTax withholding Common Stock | -50 | $47.09 | $2,355 | 6,619 | Sep 9, 2025 |
| Sep 5, 2025 | Michael S Mares JR SVP Operations | FTax withholding Common Stock | -67 | $47.09 | $3,155 | 10,883 | Sep 9, 2025 |
| Sep 5, 2025 | Greg A Milleman VP Rates & Regulatory Affairs | FTax withholding Common Stock | -66 | $47.09 | $3,108 | 11,721 | Sep 9, 2025 |
| Sep 5, 2025 | Michelle R Mortensen VP Corp Sect & Chief of Staff | FTax withholding Common Stock | -73 | $47.09 | $3,438 | 12,623 | Sep 9, 2025 |
| Sep 5, 2025 | Elissa Y Ouyang VP Facilities Fleet & Procure | FTax withholding Common Stock | -66 | $47.09 | $3,108 | 13,574 | Sep 9, 2025 |
| Sep 5, 2025 | Thomas A Scanlon Corporate Controller & PAO | FTax withholding Common Stock | -29 | $47.09 | $1,366 | 4,026 | Sep 9, 2025 |
| Sep 7, 2025 | Michael B Luu SVP Corp Svce & Chief Risk Of | FTax withholding Common Stock | -54 | $47.09 | $2,543 | 22,641 | Sep 9, 2025 |
| Sep 7, 2025 | Michael S Mares JR SVP Operations | FTax withholding Common Stock | -53 | $47.09 | $2,496 | 10,830 | Sep 9, 2025 |
| Sep 7, 2025 | Greg A Milleman VP Rates & Regulatory Affairs | FTax withholding Common Stock | -51 | $47.09 | $2,402 | 11,670 | Sep 9, 2025 |
| Sep 7, 2025 | Michelle R Mortensen VP Corp Sect & Chief of Staff | FTax withholding Common Stock | -57 | $47.09 | $2,684 | 12,566 | Sep 9, 2025 |
| Sep 7, 2025 | Elissa Y Ouyang VP Facilities Fleet & Procure | FTax withholding Common Stock | -52 | $47.09 | $2,449 | 13,522 | Sep 9, 2025 |
| Sep 7, 2025 | Thomas A Scanlon Corporate Controller & PAO | FTax withholding Common Stock | -23 | $47.09 | $1,083 | 4,003 | Sep 9, 2025 |
| Sep 7, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | FTax withholding Common Stock | -45 | $47.09 | $2,119 | 3,418 | Sep 9, 2025 |
| Sep 7, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust | FTax withholding Common Stock | -57 | $47.09 | $2,684 | 22,273 | Sep 9, 2025 |
| Sep 7, 2025 | Sophie Marwieh James VP Water Qual & Envir Affairs | FTax withholding Common Stock | -24 | $47.09 | $1,130 | 6,595 | Sep 9, 2025 |
| Sep 7, 2025 | Kenneth G Jenkins VP Water Res Plan & Sustain | FTax withholding Common Stock | -29 | $47.09 | $1,366 | 3,823 | Sep 9, 2025 |
| Sep 7, 2025 | Martin A Kropelnicki Chairman President & CEO | FTax withholding Common Stock | -385 | $47.09 | $18k | 140,131 | Sep 9, 2025 |
| Jun 12, 2025 | Lester A Snow director | SOpen-market sale Common Stock | -1,200 | $46.51 | $56k | 26,349 | Jun 13, 2025 |
| Jun 7, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | FTax withholding Common Stock | -45 | $45.62 | $2,053 | 3,532 | Jun 11, 2025 |
| Jun 7, 2025 | Elissa Y Ouyang Chief Procurement & Lead CI | FTax withholding Common Stock | -52 | $45.62 | $2,372 | 13,370 | Jun 11, 2025 |
| Jun 7, 2025 | Thomas A Scanlon Controller & Principal Acctng | FTax withholding Common Stock | -23 | $45.62 | $1,049 | 4,008 | Jun 11, 2025 |
| Jun 7, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust. | FTax withholding Common Stock | -57 | $45.62 | $2,600 | 22,308 | Jun 11, 2025 |
| Jun 7, 2025 | Michelle R Mortensen VP, Corp Sec &Chief of Staff | FTax withholding Common Stock | -57 | $45.62 | $2,600 | 12,696 | Jun 11, 2025 |
| Jun 7, 2025 | Sophie Marwieh James VP, Water Quality/ Env Affairs | FTax withholding Common Stock | -24 | $45.62 | $1,095 | 6,351 | Jun 11, 2025 |
| Jun 7, 2025 | Greg A Milleman VP, Rates and Regulatory Aff | FTax withholding Common Stock | -51 | $45.62 | $2,327 | 11,345 | Jun 11, 2025 |
| Jun 7, 2025 | Michael S Mares JR Vice President, Operations | FTax withholding Common Stock | -53 | $45.62 | $2,418 | 10,950 | Jun 11, 2025 |
| Jun 7, 2025 | Kenneth G Jenkins VP, Water Res. Plan & Sustain | FTax withholding CommonStock | -29 | $45.62 | $1,323 | 3,890 | Jun 11, 2025 |
| Jun 7, 2025 | Martin A Kropelnicki Chairman, President & CEO | FTax withholding Common Stock | -352 | $45.62 | $16k | 140,571 | Jun 11, 2025 |
| Jun 7, 2025 | Michael B Luu Sr. VP Corp Svcs & Chief Risk | FTax withholding Common Stock | -54 | $45.62 | $2,463 | 22,380 | Jun 11, 2025 |
| Jun 5, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust. | FTax withholding Common Stock | -71 | $45.85 | $3,255 | 22,365 | Jun 9, 2025 |
| Jun 5, 2025 | Sophie Marwieh James VP, Water Quality/ Env Affairs | FTax withholding Common Stock | -48 | $45.85 | $2,201 | 6,375 | Jun 9, 2025 |
| Jun 5, 2025 | Kenneth G Jenkins VP, Water Res. Plan & Sustain | FTax withholding CommonStock | -36 | $45.85 | $1,651 | 3,919 | Jun 9, 2025 |
| Jun 5, 2025 | Martin A Kropelnicki Chairman, President & CEO | FTax withholding Common Stock | -438 | $45.85 | $20k | 140,923 | Jun 9, 2025 |
| Jun 5, 2025 | Michael B Luu Sr. VP Corp Svcs & Chief Risk | FTax withholding Common Stock | -67 | $45.85 | $3,072 | 22,434 | Jun 9, 2025 |
| Jun 5, 2025 | James Patrick Lynch Sr. VP, CFO & Treasurer | FTax withholding Common Stock | -47 | $45.85 | $2,155 | 3,691 | Jun 9, 2025 |
| Jun 5, 2025 | Michael S Mares JR Vice President, Operations | FTax withholding Common Stock | -65 | $45.85 | $2,980 | 11,003 | Jun 9, 2025 |
| Jun 5, 2025 | Greg A Milleman VP, Rates and Regulatory Aff | FTax withholding Common Stock | -64 | $45.85 | $2,934 | 11,396 | Jun 9, 2025 |
| Jun 5, 2025 | Michelle R Mortensen VP, Corp Sec &Chief of Staff | FTax withholding Common Stock | -71 | $45.85 | $3,255 | 12,753 | Jun 9, 2025 |
| Jun 5, 2025 | Thomas A Scanlon Controller & Principal Acctng | FTax withholding Common Stock | -28 | $45.85 | $1,284 | 4,031 | Jun 9, 2025 |
| Jun 6, 2025 | Elissa Y Ouyang Chief Procurement & Lead CI | FTax withholding Common Stock | -64 | $45.85 | $2,934 | 13,422 | Jun 9, 2025 |
| Jun 5, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | FTax withholding Common Stock | -67 | $45.85 | $3,072 | 3,577 | Jun 9, 2025 |
| Mar 7, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | FTax withholding Common Stock | -50 | $47.90 | $2,395 | 3,644 | Mar 11, 2025 |
| Mar 7, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust. | FTax withholding Common Stock | -56 | $47.90 | $2,682 | 22,436 | Mar 11, 2025 |
| Mar 7, 2025 | Thomas A Scanlon Controller & Principal Acctng | FTax withholding Common Stock | -26 | $47.90 | $1,245 | 4,059 | Mar 11, 2025 |
| Mar 7, 2025 | Sophie Marwieh James VP, Water Quality/ Env Affairs | FTax withholding Common Stock | -27 | $47.90 | $1,293 | 6,423 | Mar 11, 2025 |
| Mar 7, 2025 | Kenneth G Jenkins VP, Water Res. Plan & Sustain | FTax withholding CommonStock | -33 | $47.90 | $1,581 | 3,955 | Mar 11, 2025 |
| Mar 7, 2025 | Martin A Kropelnicki Chairman, President & CEO | FTax withholding Common Stock | -332 | $47.90 | $16k | 141,361 | Mar 11, 2025 |
| Mar 7, 2025 | Michael B Luu Sr. VP Corp Svcs & Chief Risk | FTax withholding Common Stock | -54 | $47.90 | $2,587 | 22,501 | Mar 11, 2025 |
| Mar 7, 2025 | Michael S Mares JR Vice President, Operations | FTax withholding Common Stock | -53 | $47.90 | $2,539 | 11,068 | Mar 11, 2025 |
| Mar 7, 2025 | Greg A Milleman VP, Rates and Regulatory Aff | FTax withholding Common Stock | -56 | $47.90 | $2,682 | 11,460 | Mar 11, 2025 |
| Mar 7, 2025 | Michelle R Mortensen VP, Corp Sec &Chief of Staff | FTax withholding Common Stock | -63 | $47.90 | $3,018 | 12,824 | Mar 11, 2025 |
| Mar 7, 2025 | Elissa Y Ouyang Chief Procurement & Lead CI | FTax withholding Common Stock | -56 | $47.90 | $2,682 | 13,486 | Mar 11, 2025 |
| Mar 7, 2025 | Ronald D Webb VP, Human Resources | FTax withholding Common Stock | -49 | $47.90 | $2,347 | 26,580 | Mar 11, 2025 |
| Mar 5, 2025 | Kenneth G Jenkins VP, Water Res. Plan & Sustain | FTax withholding CommonStock | -166 | $46.65 | $7,744 | 3,988 | Mar 6, 2025 |
| Mar 5, 2025 | Martin A Kropelnicki Chairman, President & CEO | FTax withholding Common Stock | -1,699 | $46.65 | $79k | 141,571 | Mar 6, 2025 |
| Mar 5, 2025 | Elissa Y Ouyang Chief Procurement & Lead CI | FTax withholding Common Stock | -292 | $56.65 | $17k | 13,428 | Mar 6, 2025 |
| Mar 5, 2025 | Shannon C Dean SR. VP, Cust Svc & Chief Sust. | FTax withholding Common Stock | -314 | $46.65 | $15k | 22,479 | Mar 6, 2025 |
| Mar 5, 2025 | Sophie Marwieh James VP, Water Quality/ Env Affairs | FTax withholding Common Stock | -227 | $46.65 | $11k | 6,403 | Mar 6, 2025 |
| Mar 5, 2025 | Michael B Luu Sr. VP Corp Svcs & Chief Risk | FTax withholding Common Stock | -270 | $46.65 | $13k | 22,503 | Mar 6, 2025 |
| Mar 5, 2025 | Michael S Mares JR Vice President, Operations | FTax withholding Common Stock | -296 | $46.65 | $14k | 11,121 | Mar 6, 2025 |
| Mar 5, 2025 | Greg A Milleman VP, Rates and Regulatory Aff | FTax withholding Common Stock | -291 | $46.65 | $14k | 11,400 | Mar 6, 2025 |
| Mar 5, 2025 | Michelle R Mortensen VP, Corp Sec &Chief of Staff | FTax withholding Common Stock | -319 | $46.65 | $15k | 12,887 | Mar 6, 2025 |
| Mar 4, 2025 | Thomas M Krummel director | AGrant or award Common Stock | +2,645 | $0.00 | $0 | 24,624 | Mar 6, 2025 |
| Mar 4, 2025 | Jeffrey Kightlinger director | AGrant or award Common Stock | +2,645 | $0.00 | $0 | 5,518 | Mar 6, 2025 |
| Mar 4, 2025 | Shelly Marian Esque director | AGrant or award Common Stock | +2,645 | $0.00 | $0 | 15,358 | Mar 6, 2025 |
| Mar 5, 2025 | Ronald D Webb VP, Human Resources | FTax withholding Common Stock | -280 | $46.65 | $13k | 26,562 | Mar 6, 2025 |
| Mar 4, 2025 | Gregory E Aliff director | AGrant or award Common Stock | +2,645 | $0.00 | $0 | 23,060 | Mar 6, 2025 |
| Mar 4, 2025 | Shawn C Bunting Sr. VP, GC and Business Dev | AGrant or award Common Stock | +1,653 | $0.00 | $0 | 3,997 | Mar 6, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Gregory E Aliffdirector
- Shawn C BuntingSr. VP, GC and Business Dev
- Shannon C DeanSR. VP, Cust Svc & Chief Sust
- Shelly Marian Esquedirector
- Kristan A HamnerVP, Chief Human Resource Offcr
- Sophie Marwieh JamesVP Water Qual & Envir Affairs
- Kenneth G JenkinsVP Water Res Plan & Sustain
- Martin A KropelnickiChairman President & CEO
- Jeffrey Kightlingerdirector
- Thomas M Krummeldirector
- Michael B LuuSVP Corp Svce & Chief Risk Of
- James Patrick LynchSVP CFO and Treasurer
- Michael S Mares JRSVP Operations
- Greg A MillemanVP Rates & Regulatory Affairs
- Michelle R MortensenVP Corp Sect & Chief of Staff
- Elissa Y OuyangVP Facilities Fleet & Procure
- Todd Kenneth PetersVice President, Engineering
- Thomas A ScanlonCorporate Controller & PAO
- Lester A Snowdirector
- Ronald D WebbVP, Human Resources
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.