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Deming Xiao Insider Trading Activity

Every SEC Form 4 transaction reported by Deming Xiao, sourced directly from SEC EDGAR and updated as new filings are accepted.

By · SEC Form 4 & insider trading data analysts
Last updated:

Quick Answer

Is Deming Xiao buying or selling?

Deming Xiao reported 0 open-market buys ($0) and 103 sells ($289.5M) across 103 Form 4 filings at 1 company — a net selling position of $289.5M.

Source: SEC EDGAR Form 4

Key Statistics (as of May 8, 2026)

Total Form 4 filings
103
SEC EDGAR
Companies
1
Buys (0)
$0
Sells (103)
$289.5M

Insider sentiment

Net selling

Net insider flow of $289.5M in net selling, filed between May 7, 2018 – May 8, 2026.

Companies Deming Xiao files for

#CompanyForm 4 filings
1MPWRMONOLITHIC POWER SYSTEMS INC103

Recent Deming Xiao transactions

DateTickerRoleTypeSharesValue
May 8, 2026MPWREVP, Global OperationsSale30.0K$49.6M
Feb 10, 2026MPWREVP, Global OperationsSale22.9K$26.8M
Aug 4, 2025MPWREVP, Global OperationsSale40.0K$31.2M
Feb 12, 2025MPWREVP, Global OperationsSale662$474.7K
Nov 13, 2024MPWREVP, Global OperationsSale866$662.6K
Aug 29, 2024MPWREVP, Global OperationsSale9.3K$8.8M
Aug 22, 2024MPWREVP, Global OperationsSale10.0K$9.5M
Aug 12, 2024MPWREVP, Global OperationsSale859$668.6K
Jul 24, 2024MPWREVP, Global OperationsSale3.2K$2.7M
May 23, 2024MPWREVP, Global OperationsSale1.3K$1.0M
May 9, 2024MPWREVP, Global OperationsSale869$599.6K
Feb 7, 2024MPWRPres. of MPS Asia OperationsSale982$629.5K
Jan 11, 2024MPWRPres. of MPS Asia OperationsSale11.5K$6.8M
Jan 8, 2024MPWRPres. of MPS Asia OperationsSale25.3K$14.8M
Nov 9, 2023MPWRPres. of MPS Asia OperationsSale859$421.2K
Nov 7, 2023MPWRPres. of MPS Asia OperationsSale982$484.0K
Oct 4, 2023MPWRPres. of MPS Asia OperationsSale4.3K$2.0M
Aug 10, 2023MPWRPres. of MPS Asia OperationsSale874$463.4K
Aug 7, 2023MPWRPres. of MPS Asia OperationsSale988$520.2K
Jul 25, 2023MPWRPres. of MPS Asia OperationsSale9.6K$5.1M
Jul 5, 2023MPWRPres. of MPS Asia OperationsSale4.3K$2.3M
May 10, 2023MPWRPres. of MPS Asia OperationsSale857$351.2K
May 5, 2023MPWRPres. of MPS Asia OperationsSale991$455.5K
May 4, 2023MPWRPres. of MPS Asia OperationsSale3.5K$1.6M
Apr 6, 2023MPWRPres. of MPS Asia OperationsSale4.4K$2.1M

Showing the 25 most recent filings of 103. Screen every filing.

Deming Xiao insider trading FAQ

Is Deming Xiao buying or selling?

Across 103 SEC Form 4 filings, Deming Xiao reported 0 open-market purchases totaling $0 and 103 sales totaling $289.5M — a net selling position of $289.5M.

Which companies does Deming Xiao file Form 4s for?

Deming Xiao has reported insider transactions at 1 company, most often MONOLITHIC POWER SYSTEMS INC (MPWR).

How far back does Deming Xiao's filing history go?

Trabud holds Deming Xiao's SEC Form 4 filings from May 7, 2018 – May 8, 2026, sourced directly from SEC EDGAR.

Where does Trabud get Deming Xiao's insider trading data?

Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.

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