CALIFORNIA WATER SERVICE GROUP (CWT) — insider trading
Utilities · NYSE
CALIFORNIA WATER SERVICE GROUP (CWT) has 57 reported SEC Form 4 insider transactions in our data, including 4 open-market sales among the most recent 57 (latest 2026-09-05).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-05 | James Sophie Marwieh | Officer (VP Water Qual) | Shares withheld for taxes / exercise cost | 50 | $50.03 | $2.5K | Form 4 |
| 2026-09-05 | Jenkins Kenneth G | Officer (VP Water Res Plan & Sustain) | Shares withheld for taxes / exercise cost | 38 | $50.03 | $1.9K | Form 4 |
| 2026-09-05 | Peters Todd Kenneth | Officer (Vice President, Engineering) | Shares withheld for taxes / exercise cost | 40 | $50.03 | $2.0K | Form 4 |
| 2026-09-05 | Scanlon Thomas A | Officer (VP, Corporate Controller & PAO) | Shares withheld for taxes / exercise cost | 30 | $50.03 | $1.5K | Form 4 |
| 2026-09-05 | Mares Michael S JR | Officer (SVP Operations) | Shares withheld for taxes / exercise cost | 67 | $50.03 | $3.4K | Form 4 |
| 2026-09-05 | Ouyang Elissa Y | Officer (VP Facilities Fleet Procure IT) | Shares withheld for taxes / exercise cost | 66 | $50.03 | $3.3K | Form 4 |
| 2026-09-05 | Dean Shannon C | Officer (SVP, Cust Svc & Chief Sust Of) | Shares withheld for taxes / exercise cost | 72 | $50.03 | $3.6K | Form 4 |
| 2026-09-05 | Mortensen Michelle R | Officer (VP Corp Sect, Gov & Assurance) | Shares withheld for taxes / exercise cost | 73 | $50.03 | $3.7K | Form 4 |
| 2026-09-05 | Luu Michael B | Officer (SVP Corp Svce & Chief Risk Of) | Shares withheld for taxes / exercise cost | 68 | $50.03 | $3.4K | Form 4 |
| 2026-09-05 | Lynch James Patrick | Officer (SVP CFO and Treasurer) | Shares withheld for taxes / exercise cost | 48 | $50.03 | $2.4K | Form 4 |
| 2026-09-05 | KROPELNICKI MARTIN A | Officer (Chairman President & CEO) | Shares withheld for taxes / exercise cost | 493 | $50.03 | $24.7K | Form 4 |
| 2026-09-05 | Bunting Shawn C | Officer (SVP, Chief Legal Officer & BD) | Shares withheld for taxes / exercise cost | 69 | $50.03 | $3.5K | Form 4 |
| 2026-09-04 | HAMNER KRISTAN A | Officer (VP, Chief Human Resource Offcr) | Shares withheld for taxes / exercise cost | 42 | $50.03 | $2.1K | Form 4 |
| 2026-09-04 | James Sophie Marwieh | Officer (VP Water Qual) | Shares withheld for taxes / exercise cost | 51 | $50.03 | $2.6K | Form 4 |
| 2026-09-04 | Jenkins Kenneth G | Officer (VP Water Res Plan & Sustain) | Shares withheld for taxes / exercise cost | 64 | $50.03 | $3.2K | Form 4 |
| 2026-09-04 | Peters Todd Kenneth | Officer (Vice President, Engineering) | Shares withheld for taxes / exercise cost | 41 | $50.03 | $2.1K | Form 4 |
| 2026-09-04 | Scanlon Thomas A | Officer (VP, Corporate Controller & PAO) | Shares withheld for taxes / exercise cost | 30 | $50.03 | $1.5K | Form 4 |
| 2026-09-04 | Mares Michael S JR | Officer (SVP Operations) | Shares withheld for taxes / exercise cost | 69 | $50.03 | $3.5K | Form 4 |
| 2026-09-04 | Ouyang Elissa Y | Officer (VP Facilities Fleet Procure IT) | Shares withheld for taxes / exercise cost | 68 | $50.03 | $3.4K | Form 4 |
| 2026-09-04 | Dean Shannon C | Officer (SVP, Cust Svc & Chief Sust Of) | Shares withheld for taxes / exercise cost | 75 | $50.03 | $3.8K | Form 4 |
| 2026-09-04 | Mortensen Michelle R | Officer (VP Corp Sect, Gov & Assurance) | Shares withheld for taxes / exercise cost | 75 | $50.03 | $3.8K | Form 4 |
| 2026-09-04 | Luu Michael B | Officer (SVP Corp Svce & Chief Risk Of) | Shares withheld for taxes / exercise cost | 70 | $50.03 | $3.5K | Form 4 |
| 2026-09-04 | Lynch James Patrick | Officer (SVP CFO and Treasurer) | Shares withheld for taxes / exercise cost | 50 | $50.03 | $2.5K | Form 4 |
| 2026-09-04 | KROPELNICKI MARTIN A | Officer (Chairman President & CEO) | Shares withheld for taxes / exercise cost | 505 | $50.03 | $25.3K | Form 4 |
| 2026-09-04 | Bunting Shawn C | Officer (SVP, Chief Legal Officer & BD) | Shares withheld for taxes / exercise cost | 71 | $50.03 | $3.6K | Form 4 |
| 2026-09-01 | Snow Lester A | Director | Open-market sale | 500 | $50.21 | $25.1K | Form 4 |
| 2026-08-13 | Krummel Thomas M | Director | Open-market sale | 3,700 | $50.37 | $186.4K | Form 4 |
| 2026-08-04 | Shimansky Gregory Dale | Officer (VP, Rates & Reg Affairs) | Grant / award / vesting | 446 | — | $0 | Form 4 |
| 2026-06-05 | Bunting Shawn C | Officer (Sr. VP, GC and Business Dev) | Shares withheld for taxes / exercise cost | 69 | $45.82 | $3.2K | Form 4 |
| 2026-06-05 | Dean Shannon C | Officer (SR. VP, Cust Svc & Chief Sust) | Shares withheld for taxes / exercise cost | 73 | $45.82 | $3.3K | Form 4 |
| 2026-06-05 | James Sophie Marwieh | Officer (VP Water Qual) | Shares withheld for taxes / exercise cost | 50 | $45.82 | $2.3K | Form 4 |
| 2026-06-05 | Jenkins Kenneth G | Officer (VP Water Res Plan & Sustain) | Shares withheld for taxes / exercise cost | 38 | $45.82 | $1.7K | Form 4 |
| 2026-06-05 | KROPELNICKI MARTIN A | Officer (Chairman President & CEO) | Shares withheld for taxes / exercise cost | 493 | $45.82 | $22.6K | Form 4 |
| 2026-06-05 | Luu Michael B | Officer (SVP Corp Svce & Chief Risk Of) | Shares withheld for taxes / exercise cost | 69 | $45.82 | $3.2K | Form 4 |
| 2026-06-05 | Lynch James Patrick | Officer (SVP CFO and Treasurer) | Shares withheld for taxes / exercise cost | 49 | $45.82 | $2.2K | Form 4 |
| 2026-06-05 | Mares Michael S JR | Officer (SVP Operations) | Shares withheld for taxes / exercise cost | 68 | $45.82 | $3.1K | Form 4 |
| 2026-06-05 | Milleman Greg A | Officer (VP Rates & Regulatory Affairs) | Shares withheld for taxes / exercise cost | 66 | $45.82 | $3.0K | Form 4 |
| 2026-06-05 | Mortensen Michelle R | Officer (VP Corp Sect, Gov & Assurance) | Shares withheld for taxes / exercise cost | 73 | $45.82 | $3.3K | Form 4 |
| 2026-06-05 | Ouyang Elissa Y | Officer (VP Facilities Fleet Procure IT) | Shares withheld for taxes / exercise cost | 66 | $45.82 | $3.0K | Form 4 |
| 2026-06-05 | Peters Todd Kenneth | Officer (Vice President, Engineering) | Shares withheld for taxes / exercise cost | 40 | $45.82 | $1.8K | Form 4 |
| 2026-06-05 | Scanlon Thomas A | Officer (VP, Corporate Controller & PAO) | Shares withheld for taxes / exercise cost | 30 | $45.82 | $1.4K | Form 4 |
| 2026-06-04 | Bunting Shawn C | Officer (Sr. VP, GC and Business Dev) | Shares withheld for taxes / exercise cost | 70 | $45.24 | $3.2K | Form 4 |
| 2026-06-04 | Dean Shannon C | Officer (SR. VP, Cust Svc & Chief Sust) | Shares withheld for taxes / exercise cost | 74 | $45.24 | $3.3K | Form 4 |
| 2026-06-04 | HAMNER KRISTAN A | Officer (VP, Chief Human Resource Offcr) | Shares withheld for taxes / exercise cost | 41 | $45.24 | $1.9K | Form 4 |
| 2026-06-04 | James Sophie Marwieh | Officer (VP Water Qual) | Shares withheld for taxes / exercise cost | 51 | $45.24 | $2.3K | Form 4 |
| 2026-06-04 | Jenkins Kenneth G | Officer (VP Water Res Plan & Sustain) | Shares withheld for taxes / exercise cost | 63 | $45.24 | $2.9K | Form 4 |
| 2026-06-04 | KROPELNICKI MARTIN A | Officer (Chairman President & CEO) | Shares withheld for taxes / exercise cost | 504 | $45.24 | $22.8K | Form 4 |
| 2026-06-04 | Luu Michael B | Officer (SVP Corp Svce & Chief Risk Of) | Shares withheld for taxes / exercise cost | 70 | $45.24 | $3.2K | Form 4 |
| 2026-06-04 | Lynch James Patrick | Officer (SVP CFO and Treasurer) | Shares withheld for taxes / exercise cost | 49 | $45.24 | $2.2K | Form 4 |
| 2026-06-04 | Mares Michael S JR | Officer (SVP Operations) | Shares withheld for taxes / exercise cost | 69 | $45.24 | $3.1K | Form 4 |
| 2026-06-04 | Milleman Greg A | Officer (VP Rates & Regulatory Affairs) | Shares withheld for taxes / exercise cost | 67 | $45.24 | $3.0K | Form 4 |
| 2026-06-04 | Mortensen Michelle R | Officer (VP Corp Sect, Gov & Assurance) | Shares withheld for taxes / exercise cost | 74 | $45.24 | $3.3K | Form 4 |
| 2026-06-04 | Ouyang Elissa Y | Officer (VP Facilities Fleet Procure IT) | Shares withheld for taxes / exercise cost | 67 | $45.24 | $3.0K | Form 4 |
| 2026-06-04 | Peters Todd Kenneth | Officer (Vice President, Engineering) | Shares withheld for taxes / exercise cost | 40 | $45.24 | $1.8K | Form 4 |
| 2026-06-04 | Scanlon Thomas A | Officer (VP, Corporate Controller & PAO) | Shares withheld for taxes / exercise cost | 30 | $45.24 | $1.4K | Form 4 |
| 2026-05-27 | Snow Lester A | Director | Open-market sale | 1,100 | $44.00 | $48.4K | Form 4 |
| 2026-05-21 | Krummel Thomas M | Director | Open-market sale | 3,700 | $43.30 | $160.2K | Form 4 |
Ask the chat about CWT's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: CALIFORNIA WATER SERVICE GROUP (CWT).
Last updated 2026-09-05 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.