Monolithic Power Systems (MPWR) Interim CFO Robert W. Dean II Sells 6 Shares

What Happened
Robert W. Dean II, Interim Chief Financial Officer of Monolithic Power Systems (MPWR), sold 6 shares on 2026-08-17 at $1,413.64 per share for total proceeds of $8,482. The filing reports the sale was to cover tax withholding obligations related to the vesting of restricted stock units (RSUs).

Key Details

• Transaction date and price: 2026-08-17, 6 shares sold at $1,413.64 each.
• Total proceeds: $8,482.
• Form filed: SEC Form 4 filed on 2026-08-19 (no late filing indicated).
• Footnote: Sale was to satisfy tax withholding on vested RSUs (per filing footnote F1).
• Shares owned after transaction: Not specified in the provided filing excerpt.

Context
This was a small, routine sale to cover tax withholding on RSU vesting rather than a market-timed disposition for investment reasons. Such withholding sales are common and typically do not by themselves indicate the insider’s view of the company’s prospects. Purchases or larger-scale sales tend to be more informative for assessing insider sentiment.