| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BLEGEN THEODORE | EVP and CFO | 1555 PALM BEACH LAKES BLVD., WEST PALM BEACH | /s/ Saria Tseng, attorney-in-fact for Mr. Bernie Blegen | 02 Feb 2026 | 0001415033 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MPWR | Common Stock | Sale | $244,328 | -220 | -0.32% | $1110.58 | 68,112 | 02 Feb 2026 | Direct | F1, F2 |
| transaction | MPWR | Common Stock | Sale | $44,684 | -40 | -0.06% | $1117.11 | 68,072 | 02 Feb 2026 | Direct | F1 |
| transaction | MPWR | Common Stock | Sale | $89,662 | -80 | -0.12% | $1120.77 | 67,992 | 02 Feb 2026 | Direct | F1 |
| transaction | MPWR | Common Stock | Sale | $44,902 | -40 | -0.06% | $1122.56 | 67,952 | 02 Feb 2026 | Direct | F1 |
| transaction | MPWR | Common Stock | Sale | $225,316 | -200 | -0.29% | $1126.58 | 67,752 | 02 Feb 2026 | Direct | F1, F3 |
| transaction | MPWR | Common Stock | Sale | $90,191 | -80 | -0.12% | $1127.39 | 67,672 | 02 Feb 2026 | Direct | F1, F4 |
| transaction | MPWR | Common Stock | Sale | $270,823 | -240 | -0.35% | $1128.43 | 67,432 | 02 Feb 2026 | Direct | F1, F5 |
| transaction | MPWR | Common Stock | Sale | $271,027 | -240 | -0.36% | $1129.28 | 67,192 | 02 Feb 2026 | Direct | F1, F6 |
| transaction | MPWR | Common Stock | Sale | $361,754 | -320 | -0.48% | $1130.48 | 66,872 | 02 Feb 2026 | Direct | F1, F7 |
| transaction | MPWR | Common Stock | Sale | $224,077 | -198 | -0.3% | $1131.70 | 66,674 | 02 Feb 2026 | Direct | F1, F8 |
| transaction | MPWR | Common Stock | Sale | $364,720 | -322 | -0.48% | $1132.67 | 66,352 | 02 Feb 2026 | Direct | F1, F9 |
| transaction | MPWR | Common Stock | Sale | $429,585 | -379 | -0.57% | $1133.47 | 65,973 | 02 Feb 2026 | Direct | F1, F10 |
| transaction | MPWR | Common Stock | Sale | $273,393 | -241 | -0.37% | $1134.41 | 65,732 | 02 Feb 2026 | Direct | F1, F11 |
| transaction | MPWR | Common Stock | Sale | $136,259 | -120 | -0.18% | $1135.49 | 65,612 | 02 Feb 2026 | Direct | F1, F12 |
| transaction | MPWR | Common Stock | Sale | $136,362 | -120 | -0.18% | $1136.35 | 65,492 | 02 Feb 2026 | Direct | F1, F13 |
| transaction | MPWR | Common Stock | Sale | $91,025 | -80 | -0.12% | $1137.81 | 65,412 | 02 Feb 2026 | Direct | F1 |
| transaction | MPWR | Common Stock | Sale | $91,159 | -80 | -0.12% | $1139.49 | 65,333 | 02 Feb 2026 | Direct | F1, F14, F15 |
| holding | MPWR | Common Stock | 5,331 | 02 Feb 2026 | Irrevocable Trust FBO Sarah N. Blegen | ||||||
| holding | MPWR | Common Stock | 5,331 | 02 Feb 2026 | Irrevocable Trust FBO Theodore F. Blegen |
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 2/26/2025. |
| 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 $1,110.14 to $1,110.68. 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 $1,126.50 to $1,126.71. 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 $1,127.28 to $1,127.49. 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 $1,128.32 to $1,128.64. 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 $1,129.07 to $1,129.60. 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 $1,130.18 to $1,130.95. 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 $1,131.38 to $1,131.91. 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 $1,132.33 to $1,132.84. 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. |
| F10 | 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 $1,133.00 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. |
| F11 | 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 $1,134.00 to $1,134.78. 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. |
| F12 | 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 $1,135.09 to $1,135.71. 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. |
| F13 | 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 $1,136.18 to $1,136.69. 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. |
| F14 | 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 $1,139.44 to $1,139.54. 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. |
| F15 | Ending balance has been adjusted for a one share rounding difference. |