Chang Kuo Wei Herbert insider trades
Chang Kuo Wei Herbert has filed 20 Form 4s with the SEC that we hold, all for Monolithic Power Systems, INC. (MPWR), as Director. Across all of them we count 0 purchases worth $0 and 17 sales worth $1.8M reported on Form 4. In the last 12 months: 0 purchases ($0) and 4 sales ($312.2K). The largest single trade was a sale of 500 shares of Monolithic Power Systems, INC. worth $250.0K, dated 2023-08-29. Of 1 sale filed since we began reading the 10b5-1 checkbox, 0 (0%) were marked as made under a 10b5-1 trading plan. The first filing on our record is dated 2022-02-09 and the latest 2026-08-25.
Monolithic Power Systems, INC. (MPWR)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2023-08-29 | S, sale reported on Form 4 | 500 | $250.0K | 2023-08-29 |
| 2023-11-13 | S, sale reported on Form 4 | 100 | $51.0K | 2023-11-13 |
| 2023-11-14 | S, sale reported on Form 4 | 400 | $209.5K | 2023-11-15 |
| 2024-02-22 | S, sale reported on Form 4 | 250 | $187.5K | 2024-02-23 |
| 2024-02-29 | S, sale reported on Form 4 | 250 | $176.6K | 2024-02-29 |
| 2024-05-15 | S, sale reported on Form 4 | 100 | $74.0K | 2024-05-15 |
| 2024-05-15 | S, sale reported on Form 4 | 100 | $73.0K | 2024-05-15 |
| 2024-05-20 | S, sale reported on Form 4 | 200 | $150.0K | 2024-05-22 |
| 2024-08-15 | S, sale reported on Form 4 | 100 | $89.8K | 2024-08-15 |
| 2024-08-15 | S, sale reported on Form 4 | 100 | $88.9K | 2024-08-15 |
| 2025-05-08 | S, sale reported on Form 4 | 100 | $65.0K | 2025-05-09 |
| 2025-05-12 | S, sale reported on Form 4 | 100 | $69.8K | 2025-05-12 |
| 2025-05-13 | S, sale reported on Form 4 | 50 | $36.9K | 2025-05-13 |
| 2025-11-21 | S, sale reported on Form 4 | 100 | $87.4K | 2025-11-24 |
| 2025-11-25 | S, sale reported on Form 4 | 100 | $89.7K | 2025-11-25 |
| 2026-08-11 | S, sale reported on Form 4 | 50 | $71.0K | 2026-08-13 |
| 2026-08-24 | S, sale reported on Form 4 | 50 | $64.1K | 2026-08-25 |
Counted from the Form 4 filings this reporting owner (SEC CIK 1192171) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
Privacy · Terms