Form 4 for MPWR Monolithic Power Systems
Accepted 2026-05-20 18:52:40 ET · period of report 2026-05-18 · accession 0001214659-26-006622 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-20 18:52 | 2026-05-18 | MPWR | DEAN ROBERT W II | Interim CFO | S - Sale | $1,563.28 | -4 | 5,900 | -0.1% | -$6,253 |
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 | 2026-05-18 | S | D | 4 | $1,563.28 | 5,900 | D | — | — | (F1) The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units. |