MPWR Trades by Members of Congress
Stock trades disclosed by members of Congress on periodic transaction reports (PTRs), newest trade date first. Click a name for the member’s full record, or a filing for the original PTR.
House PTR filings as of Oct 20, 2026
Senate PTR filings as of Oct 21, 2026
Company data, filings and insider activity for MPWR: MPWR stock page.
Latest disclosed trades
1–8 of 8| Date | Member | Asset | Type | Amount | Filing |
|---|---|---|---|---|---|
| 2026-06-05 | Byron Donalds · R-FL-19 | MPWR · Monolithic Power Systems, Inc. - Common Stock | Partial sell | $1k – $15k | PTR |
| 2026-02-04 | Markwayne Mullin · R-OK | MPWR · Monolithic Power Systems, Inc. - Common Stock | Buy | $15k – $50k | PTR |
| 2026-01-05 | Markwayne Mullin · R-OK | MPWR · Monolithic Power Systems, Inc. - Common Stock | Buy | $15k – $50k | PTR |
| 2025-10-20 | Michael Guest · R-MS-03 | MPWR · Monolithic Power Systems, Inc. - Common Stock | Buy | $1k – $15k | PTR |
| 2025-04-08 | Robert Bresnahan Jr · R-PA-08 | MPWR · Monolithic Power Systems, Inc. - Common Stock | Buy | $1k – $15k | PTR |
| 2025-01-13 | Robert Bresnahan Jr · R-PA-08 | MPWR · Monolithic Power Systems, Inc. - Common Stock | Sell | $1k – $15k | PTR |
| 2024-05-03 | Tommy Tuberville · R-AL | MPWR · Monolithic Power Systems, Inc. - Common Stock | Sell | $1k – $15k | PTR |
| 2019-06-24 | Donna Shalala · D-FL-27 | MPWR · Monolithic Power Systems, Inc. | Sell | $1k – $15k | — |
Where do these trades come from?
Members of Congress report stock trades on periodic transaction reports under the STOCK Act: within 30 days of being notified of a trade and no later than 45 days after it. Each report gives a trade date, the asset, buy or sell, and an amount band rather than an exact amount. This feed lists trades by trade date, so a trade reported today can appear below newer ones. See which members reported late on the STOCK Act late-filing tracker, the stocks the most members bought, or browse members of the House and Senate.
Guides
- Congress stock trading late filings – how many House trades were reported after the STOCK Act limit, and by whom
Source: U.S. House Clerk and Senate periodic transaction reports. Educational only — not investment advice. See our methodology.