MPWR Filing
4Filing Date: May 29, 2026
MONOLITHIC POWER SYSTEMS INC (MPWR) · Insider Trading (Form 4) SEC Filing
Statement of Changes in Beneficial Ownership
descriptionView SEC Filing
ACC: 0001214659-26-006933open_in_new
Total Value$12.86M
Trades2
Insiders1
Transaction Details
Tseng Saria
EVP & General Counsel·Direct
Sell · Dispose
Common Stock
Shares-7.57K
Price$1700.00
Total Value$12.86M
Shares Owned After144.22K
Transaction DateMay 27, 2026
Tseng Saria
EVP & General Counsel·Indirect · C&T Discovery Foundation
Common Stock
Shares0
Price-
Total Value$0
Shares Owned After1.00K
Post-Transaction Holdings
Tseng Saria
| Security | Shares | Change |
|---|---|---|
| Common Stock | 145.22K | -7.57K (-4.95%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-05-27
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
--- Reporting Owner ---
Name: Tseng Saria
CIK: 0001312593
Role: Officer (EVP & General Counsel)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-05-27 | Code: S (Open market sale)
Shares: -7,565 | Price: $1,700.00
Total Value: $12,860,500.00
Shares Owned After: 144,218 | Ownership: D (Direct)
--- Holdings ---
[Holding #1]
Security: Common Stock
Ownership: I (Indirect)
--- Signature ---
/s/ /s/ Saria Tseng (2026-05-29)