MPWR Filing
4Filing Date: May 27, 2026
MONOLITHIC POWER SYSTEMS INC (MPWR) · Insider Trading (Form 4) SEC Filing
Statement of Changes in Beneficial Ownership
descriptionView SEC Filing
ACC: 0001214659-26-006804open_in_new
Total Value$816.5K
Trades1
Insiders1
Transaction Details
Zhou Jeff
Director·Direct
Sell · Dispose
Common Stock
Shares-486
Price$1680.00
Total Value$816.5K
Shares Owned After3.80K
Transaction DateMay 26, 2026
Post-Transaction Holdings
Zhou Jeff
| Security | Shares | Change |
|---|---|---|
| Common Stock | 3.80K | -486 (-11.34%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-05-26
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
--- Reporting Owner ---
Name: Zhou Jeff
CIK: 0001480772
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-05-26 | Code: S (Open market sale)
Shares: -486 | Price: $1,680.00
Total Value: $816,480.00
Shares Owned After: 3,800 | Ownership: D (Direct)
--- Signature ---
/s/ /s/ Saria Tseng, attorney-in-fact for Mr. Jeff Zhou (2026-05-27)