| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Hsing Michael | CEO, Director | 1555 PALM BEACH LAKES BLVD., WEST PALM BEACH | /s/ Saria Tseng, attorney-in-fact for Mr. Michael R. Hsing | 12 Feb 2026 | 0001308676 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MPWR | Common Stock | Sale | $4,869,907 | -4,302 | -0.44% | $1132.01 | 983,932 | 10 Feb 2026 | Direct | F1, F2 |
| transaction | MPWR | Common Stock | Sale | $7,189,944 | -6,325 | -0.64% | $1136.75 | 977,607 | 10 Feb 2026 | Direct | F1, F3 |
| transaction | MPWR | Common Stock | Sale | $18,361,430 | -16,080 | -1.6% | $1141.88 | 961,527 | 10 Feb 2026 | Direct | F1, F4 |
| transaction | MPWR | Common Stock | Sale | $4,427,758 | -3,864 | -0.4% | $1145.90 | 957,663 | 10 Feb 2026 | Direct | F1, F5 |
| transaction | MPWR | Common Stock | Sale | $1,398,599 | -1,215 | -0.13% | $1151.11 | 956,448 | 10 Feb 2026 | Direct | F1, F6 |
| transaction | MPWR | Common Stock | Sale | $801,542 | -694 | -0.07% | $1154.96 | 955,754 | 10 Feb 2026 | Direct | F1, F7 |
| transaction | MPWR | Common Stock | Sale | $418,108 | -360 | -0.04% | $1161.41 | 955,394 | 10 Feb 2026 | Direct | F1, F8 |
| transaction | MPWR | Common Stock | Sale | $1,034,915 | -880 | -0.09% | $1176.04 | 954,514 | 10 Feb 2026 | Direct | F1, F9 |
| transaction | MPWR | Common Stock | Sale | $335,233 | -280 | -0.03% | $1197.26 | 954,234 | 10 Feb 2026 | Direct | F1 |
| holding | MPWR | Common Stock | 133,040 | 10 Feb 2026 | by M Hsing 04 Trust | ||||||
| holding | MPWR | Common Stock | 12,825 | 10 Feb 2026 | ZH Family 2020 Trust |
Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.
Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
| Id | Content |
|---|---|
| F1 | These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. |
| F2 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,128.88 to $1,133.86. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F3 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,133.92 to $1,138.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F4 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,138.96 to $1,143.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F5 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,144.03 to $1,149.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F6 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,149.04 to $1,154.00. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F7 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,154.09 to $1,155.86. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F8 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,159.96 to $1,163.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |
| F9 | The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,172.65 to $1,177.08. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. |