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
| Security | Shares | Change |
|---|---|---|
| Common Stock | 515 | -50 (-8.85%) |
auto_awesomeDeep Analysis
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.
lock
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)