Insider

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 · Insider-trading data from SEC EDGAR
Latest filing:

Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.

Quick Answer

Is Deming Xiao buying or selling?

Deming Xiao reported 0 open-market buys ($0) and 105 sells ($293.1M) across 105 Form 4 filings at 1 company — a net selling position of $293.1M.

Source: SEC EDGAR Form 4

What stands out

Key Statistics (as of May 8, 2026)

Total Form 4 filings
105
SEC EDGAR
Companies
1
Buys (0)
$0
Sells (105)
$293.1M

Insider sentiment

Net selling

Net insider flow of $293.1M in net selling, filed between Feb 5, 2018 – May 8, 2026.

Companies Deming Xiao files for

#CompanyForm 4 filings
1MPWRMONOLITHIC POWER SYSTEMS INC105

Recent Deming Xiao transactions

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

Showing the 25 most recent filings of 105. Screen every filing.

Deming Xiao insider trading FAQ

Is Deming Xiao buying or selling?

Across 105 SEC Form 4 filings, Deming Xiao reported 0 open-market purchases totaling $0 and 105 sales totaling $293.1M — a net selling position of $293.1M.

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 Feb 5, 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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