Form 4 for MPWR Monolithic Power Systems
Accepted 2025-09-03 00:00:00 ET · period of report 2025-09-02 · accession 0001214659-25-013303 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M | 2025-09-03 | 2025-09-02 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $814.34 | -3,000 | 43.4K | -6% | -$2.44M |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-09-02 | S | D | 200 | $820.70 | 41,265 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $820.50 to $820.88. 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. |
| 2 | Common | Common Stock | 2025-09-02 | S | D | 200 | $821.75 | 41,065 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $821.64 to $821.86. 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. |
| 3 | Common | Common Stock | 2025-09-02 | S | D | 126 | $822.59 | 40,939 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $822.31 to $822.72. 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. |
| 4 | Common | Common Stock | 2025-09-02 | S | D | 100 | $803.43 | 43,839 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 5 | Common | Common Stock | 2025-09-02 | S | D | 100 | $804.64 | 43,739 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 6 | Common | Common Stock | 2025-09-02 | S | D | 200 | $806.57 | 43,539 | D | — | — | (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 $806.25 to $806.89. 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. |
| 7 | Common | Common Stock | 2025-09-02 | S | D | 100 | $818.44 | 41,465 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 8 | Common | Common Stock | 2025-09-02 | S | D | 500 | $811.45 | 42,939 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $811.11 to $811.96. 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. |
| 9 | Common | Common Stock | 2025-09-02 | S | D | 100 | $812.84 | 42,839 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 10 | Common | Common Stock | 2025-09-02 | S | D | 100 | $813.09 | 42,739 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 11 | Common | Common Stock | 2025-09-02 | S | D | 200 | $814.75 | 42,539 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $814.61 to $814.88. 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. |
| 12 | Common | Common Stock | 2025-09-02 | S | D | 400 | $815.39 | 42,139 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $815.10 to $815.74. 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. |
| 13 | Common | Common Stock | 2025-09-02 | S | D | 574 | $816.47 | 41,565 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $816.20 to $816.76. 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. |
| 14 | Common | Common Stock | 2025-09-02 | S | D | 100 | $808.53 | 43,439 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. (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 $808.38 to $808.63. 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. |