Form 4 for MPWR Monolithic Power Systems
Accepted 2026-08-26 19:22:23 ET · period of report 2026-08-24 · accession 0001214659-26-010932 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-26 19:22 | 2026-08-24 | MPWR | DEAN ROBERT W II | Interim CFO | S - Sale | $1,297.72 | -32 | 7,094 | -0.4% | -$41.5K | |
| 2026-08-26 19:22 | 2026-08-24 | MPWR | DEAN ROBERT W II | Interim CFO | J - Other | $0.00 | -5 | 7,089 | -0.1% | $0 |
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 | 2026-08-24 | S | D | 32 | $1,297.72 | 7,094 | D | — | — | (F1) The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units. (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 $1,296.07 to $1,298.01. 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 | 2026-08-24 | J | D | 5 | $0.00 | 7,089 | D | — | — | (F3) The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were exchanged and no sale of shares occurred in the transfer. Following the completion of the transfer, the reporting person no longer retains any pecuniary interest in the shares. |