SEC Form 4 reporting owner

Xiao Deming

Xiao Deming has filed 6 Form 4 transactions reported between February 3, 2026 and May 6, 2026, as EVP, Global Operations of MONOLITHIC POWER SYSTEMS, INC..

Name as filed: Xiao Deming

Open-market buys, 24 mo

None

reported

Open-market sales, 24 mo

$76.4M

5 lines

Companies

with Form 4 filings

Latest transaction

May 6, 2026

transaction date

Roles and reported holdings

MPWRMONOLITHIC POWER SYSTEMS, INC.
Feb 3, 2026 – May 6, 2026
EVP, Global Operations
Held directly205,959 sh as of May 6, 2026 · Form 4
24 months: $76.4M sold

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

Date	Company	Type	Shares	Price	Value	Owned after	Filing
May 6, 2026	MPWREVP, Global Operations	Open-market saleCode S · direct	907	$1661.38	$1.5M@ $1661.38	205,959	Form 4
May 6, 2026	MPWREVP, Global Operations	Open-market saleCode S · direct	11,597	$1657.93	$19.2M@ $1657.93	206,866	Form 4
May 6, 2026	MPWREVP, Global Operations	Open-market saleCode S · direct	14,167	$1652.80	$23.4M@ $1652.80	218,463	Form 4
May 6, 2026	MPWREVP, Global Operations	Open-market saleCode S · direct	3,329	$1648.38	$5.5M@ $1648.38	232,630	Form 4
Feb 6, 2026	MPWREVP, Global Operations	Open-market saleCode S · directAlso reported by Tseng Saria, Sciammas Maurice	22,875	$1171.16	$26.8M@ $1171.16	235,932	Form 4
Feb 3, 2026	MPWREVP, Global Operations	Grant or awardCode A · direct	57,170	—	—	258,807	Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.