Michael B. Luu is VP at CALIFORNIA WATER SERVICE GROUP (CWT). They have made 7 open-market trades across 1 company since 2016, most recently 2026-09-05.
CIK 0001583179
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| CWT | 23,743 | $1.1M |
Shares reported on the most recent Form 4, priced at the 2026-09-08 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CWT | SELL | 2026-03-20 | 2026-03-24 | $44.58 | $66K | +2.8% | +6.9% | +1.6% |
| CWT | SELL | 2024-11-22 | 2024-11-25 | $51.50 | $101K | -5.9% | -11.2% | -10.9% |
| CWT | SELL | 2022-08-03 | 2022-08-04 | $60.54 | $26K | +4.1% | -4.7% | -3.3% |
| CWT | SELL | 2021-05-06 | 2021-05-06 | $57.98 | $24K | -3.6% | -1.6% | +11.9% |
| CWT | SELL | 2019-05-29 | 2019-05-30 | $49.23 | $49K | +1.5% | +1.9% | +13.8% |
| CWT | SELL | 2017-03-16 | 2017-03-17 | $34.47 | $83K | +0.3% | +5.6% | +7.0% |
| CWT | SELL | 2016-05-05 | 2016-05-06 | $28.69 | $24K | -4.7% | +3.6% | +12.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.