Washington · Established 2026

The Potomac Ledger

Tracking Washington Stock Trades · Decoded Each Week

Stock · Technology

Monolithic Power Systems, Inc. MPWR

Who in Washington is trading it · Oct 15 – Jul 16

U.S. members of Congress and senior executive-branch officials must disclose their trades in Monolithic Power Systems, Inc. (MPWR) under the STOCK Act and federal ethics rules. Below is every disclosed MPWR trade we track — who traded it, when it was disclosed, and the disclosed dollar range. Figures are disclosed ranges; disclosure dates lag the trade by 30–45 days.

10Disclosed trades
5Officials
4/5Buys / Sells
$73K–$270KDisclosed $ volume
8/2Congress / Exec

Who has traded MPWR

Recent disclosed MPWR trades

OfficialDisclosedTxnAmountFlags
Byron DonaldsJul 16SELL$1K–$15K
Markwayne MullinJun 26SELL$50K–$100KLate
Markwayne MullinJun 26SELL$15K–$50KLate
Michael Patrick GuestNov 5BUY$1K–$15K
Rob BresnahanMay 8BUY$1K–$15K
Rob BresnahanFeb 13s$1K–$15K
Thomas H TubervilleJun 14SELL$1K–$15K
Thomas H TubervilleNov 16BUY$1K–$15K
Thomas H TubervilleMay 11SELL$1K–$15K
Thomas H TubervilleOct 15BUY$1K–$15K