Form 4 for MPWR Monolithic Power Systems
Accepted 2025-10-31 00:00:00 ET · period of report 2025-10-30 · accession 0001214659-25-015710 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-10-31 | 2025-10-30 | MPWR | Hsing Michael | CEO, Dir | F - Tax | $1,096.63 | -121.9K | 995.7K | -11% | -$133.70M |
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 | 2025-10-30 | F | D | 121,918 | $1,096.63 | 995,669 | D | — | — | (F1) The sales transaction reported in this Form 4 represents shares of common stock withheld by the Company to satisfy the income tax obligations in connection with the earnout and vesting of the market-based restricted stock units granted in October 2022, previously reported in a Form 4. |