4Filing Date: Aug 25, 2026

Monolithic Power Systems (MPWR)

Statement of Changes in Beneficial Ownership

View SEC Filing
ACC: 0001214659-26-010853
Total Value$64.1K
Trades1
Insiders1

Transaction Details

CHANG KUO WEI HERBERT
Director·Direct
Sell · Dispose
Common Stock
Shares-50
Price$1281.57
Total Value$64.1K
Shares Owned After515
Transaction DateAug 24, 2026

Post-Transaction Holdings

CHANG KUO WEI HERBERT · Director
SecuritySharesChange
Common Stock515-50 (-8.85%)
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Deep Analysis

Director Herbert Chang sold 50 shares of Monolithic Power Systems in an open-market transaction — a trivial reduction that is not a meaningful sell signal.

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Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-24 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MONOLITHIC POWER SYSTEMS, INC. (MPWR) CIK: 0001280452 --- Reporting Owner --- Name: CHANG KUO WEI HERBERT CIK: 0001192171 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-08-24 | Code: S (Open market sale) Shares: -50 | Price: $1,281.57 Total Value: $64,078.50 Shares Owned After: 515 | Ownership: D (Direct) --- Signature --- /s/ /s/ Saria Tseng, attorney-in-fact for Mr. Herbert Chang (2026-08-25)

keid analysis is for reference only and does not constitute investment advice.