Form 4 for MPWR Monolithic Power Systems
Accepted 2025-12-02 00:00:00 ET · period of report 2025-12-01 · accession 0001214659-25-017534 · 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 | 2025-12-02 | 2025-12-01 | MPWR | BLEGEN THEODORE | EVP, CFO | S - Sale | $908.21 | -3,000 | 74.0K | -4% | -$2.72M |
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 | 2025-12-01 | S | D | 80 | $906.84 | 73,932 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 2 | Common | Common Stock | 2025-12-01 | S | D | 80 | $907.59 | 73,852 | 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 $907.49 to $907.68. 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. |
| 3 | Common | Common Stock | 2025-12-01 | S | D | 480 | $908.69 | 73,372 | 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 $908.52 to $908.75. 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 | 2025-12-01 | S | D | 1,984 | $909.00 | 71,388 | 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 | 2025-12-01 | S | D | 56 | $911.59 | 71,332 | 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 | 2025-12-01 | S | D | 40 | $899.73 | 74,292 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 7 | Common | Common Stock | 2025-12-01 | S | D | 40 | $900.88 | 74,252 | 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 | 2025-12-01 | S | D | 80 | $901.88 | 74,172 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |
| 9 | Common | Common Stock | 2025-12-01 | S | D | 40 | $902.31 | 74,132 | 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 | 2025-12-01 | S | D | 120 | $904.38 | 74,012 | D | — | — | (F1) These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. |