CALIFORNIA WATER SERVICE GROUP Insider Trading Activity
Every SEC Form 4 insider transaction reported for CALIFORNIA WATER SERVICE GROUP (CWT), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are CWT insiders buying or selling?
In the last 12 months, CALIFORNIA WATER SERVICE GROUP insiders reported 1 open-market purchase ($23.5K) and 7 sales ($664.3K) — net selling of $640.8K. Since January 2018, Trabud has recorded 71 Form 4 filings for CWT: 6 buys ($54.7K) and 65 sells ($5.7M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $23.5K by James Patrick Lynch (SVP CFO and Treasurer) on Dec 11, 2025. SEC ↗
- The most recent open-market purchase was reported on Dec 11, 2025 (10 months ago).
Key Statistics (January 2018 – Sep 1, 2026)
Total Form 4 filings
71
SEC EDGAR
Insider filers
15
Insider buys (6)
$54.7K
Insider sells (65)
$5.7M
Insider sentiment
Net sellingNet insider flow of $5.7M in net selling since January 2018, and $640.8K in net selling over the last 12 months.
Recent CWT insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Sep 1, 2026 | Lester A Snow | Director | Sale | 500 | $50.21 | $25.1K | SEC ↗ |
| Aug 14, 2026 | Thomas M Krummel | Director | Sale | 3.7K | $50.37 | $186.4K | SEC ↗ |
| May 27, 2026 | Lester A Snow | Director | Sale | 1.1K | $44.00 | $48.4K | SEC ↗ |
| May 21, 2026 | Thomas M Krummel | Director | Sale | 3.7K | $43.30 | $160.2K | SEC ↗ |
| Mar 24, 2026 | Michael B Luu | Sr. VP Corp Svcs & Chief Risk | Sale | 739.85 | $44.53 | $32.9K | SEC ↗ |
| Mar 24, 2026 | Michael S Mares JR | Vice President, Operations | Sale | 3.9K | $44.00 | $171.2K | SEC ↗ |
| Dec 23, 2025 | Michelle R Mortensen | VP, Corp Sec &Chief of Staff | Sale | 924 | $43.34 | $40.0K | SEC ↗ |
| Dec 11, 2025 | James Patrick Lynch | SVP CFO and Treasurer | Purchase | 550 | $42.80 | $23.5K | SEC ↗ |
| Jun 14, 2025 | Lester A Snow | Director | Sale | 1.2K | $46.51 | $55.8K | SEC ↗ |
| Nov 25, 2024 | Michael B Luu | Sr. VP Corp Svcs & Chief Risk | Sale | 985 | $51.50 | $50.7K | SEC ↗ |
| Sep 5, 2024 | Thomas M Krummel | Director | Sale | 555 | $55.09 | $30.6K | SEC ↗ |
| Aug 22, 2024 | Thomas M Krummel | Director | Sale | 555 | $54.33 | $30.2K | SEC ↗ |
| Aug 8, 2024 | Thomas M Krummel | Director | Sale | 555 | $52.91 | $29.4K | SEC ↗ |
| Jul 17, 2024 | Thomas M Krummel | Director | Sale | 555 | $52.99 | $29.4K | SEC ↗ |
| Jul 11, 2024 | Thomas M Krummel | Director | Sale | 1.7K | $50.07 | $82.8K | SEC ↗ |
| May 15, 2024 | Thomas M Krummel | Director | Sale | 555 | $53.26 | $29.6K | SEC ↗ |
| May 1, 2024 | Thomas M Krummel | Director | Sale | 2.2K | $50.00 | $111.0K | SEC ↗ |
| Jan 4, 2024 | Thomas M Krummel | Director | Sale | 555 | $51.90 | $28.8K | SEC ↗ |
| Dec 20, 2023 | Thomas M Krummel | Director | Sale | 555 | $53.45 | $29.7K | SEC ↗ |
| Dec 12, 2023 | Michelle R Mortensen | Corporate Secretary | Sale | 675 | $52.56 | $35.5K | SEC ↗ |
| Nov 15, 2023 | Thomas M Krummel | Director | Sale | 555 | $51.77 | $28.7K | SEC ↗ |
| Nov 4, 2023 | Thomas M Krummel | Director | Sale | 2.2K | $50.00 | $111.0K | SEC ↗ |
| May 5, 2023 | Robert J Kuta | VP, Engineering | Sale | 1.0K | $56.79 | $56.8K | SEC ↗ |
| Dec 20, 2022 | Thomas M Krummel | Director | Sale | 469 | $64.89 | $30.4K | SEC ↗ |
| Nov 30, 2022 | Thomas M Krummel | Director | Sale | 1.5K | $62.92 | $96.2K | SEC ↗ |
Showing the 25 most recent of 71 Form 4 filings for CALIFORNIA WATER SERVICE GROUP.
Most active CWT insiders
- David B Healey16 filings
- Thomas M Krummel15 filings
- Lester A Snow7 filings
- George A Vera5 filings
- Michael B Luu5 filings
Ask anything about CWT insider activity
Use Trabud's AI agent to query CALIFORNIA WATER SERVICE GROUP's Form 4 history in plain English — "Show me CWT CEO purchases this year" or compare it against any other ticker.
Open the AI agentCWT insider trading FAQ
Are CALIFORNIA WATER SERVICE GROUP insiders buying or selling?
In the last 12 months, CALIFORNIA WATER SERVICE GROUP insiders reported 1 open-market purchase ($23.5K) and 7 sales ($664.3K) — net selling of $640.8K. Since January 2018, Trabud has recorded 71 Form 4 filings for CWT: 6 buys ($54.7K) and 65 sells ($5.7M). Over the full record that is net selling of $5.7M.
How many insiders trade CWT stock?
15 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for CALIFORNIA WATER SERVICE GROUP. The most recent filing was accepted on Sep 1, 2026.
Where does Trabud get CWT insider trading data?
All CWT insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.