Luu Michael B — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Luu Michael B has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $84K.

Profile

Luu Michael B

Michael B. Luu serves as the Senior Vice President of Corporate Services and Chief Risk Officer at California Water Service Group. He has been involved in various roles within the company, focusing on corporate services and risk management.

RoleSVP Corp Svce & Chief Risk Of
Notability20/100

Board memberships

Awards & honors

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-06-08CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture69$45.82$3K
2026-06-08CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture70$45.24$3K
2026-03-24CWTCALIFORNIA WATER SERVICE GROUPS — Open-market sale740$44.53$33K
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture59$45.59$3K
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture115$45.59$5K
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPA — Grant or award205$0.00
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture504$45.59$23K
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPA — Grant or award900$0.00
2026-03-09CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture76$45.78$3K
2026-03-06CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture309$46.99$15K
2026-03-06CWTCALIFORNIA WATER SERVICE GROUPA — Grant or award1.6K$0.00
2025-09-05CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture54$47.09$3K
2025-09-05CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture69$47.09$3K
2025-06-07CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture54$45.62$2K
2025-06-05CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture67$45.85$3K
2024-12-11CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture53$48.70$3K
2024-12-03CWTCALIFORNIA WATER SERVICE GROUPF — Tax withholding / forfeiture54$51.19$3K
2024-11-25CWTCALIFORNIA WATER SERVICE GROUPS — Open-market sale985$51.50$51K

Companies — Last 90 Days

Frequently Asked Questions

Who is Luu Michael B?

Michael B. Luu serves as the Senior Vice President of Corporate Services and Chief Risk Officer at California Water Service Group. He has been involved in various roles within the company, focusing on corporate services and risk management.…

How many SEC Form 4 filings has Luu Michael B submitted recently?

1 primary Form 4 filings in the last 90 days, covering 1 company.

Has Luu Michael B been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 2 open-market sales ($84K) across all tracked filings.

Where can I see all of Luu Michael B's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

Open the live Luu Michael B profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.