MPWR congressional trades
Monolithic Power Systems, Inc. (MPWR) appears in 6 congressional disclosure rows from 4 members of Congress in 2025–2026 periodic reports: 2 purchases and 4 sales, with trade dates from May 3, 2024 to Jun 5, 2026. Byron Donalds reported the most, with 2 rows. The median gap between trade date and filing date is 36 days, and 1 trade was reported more than 45 days after it happened.
Rows keep the disclosed owner and amount range. This is a record of reported transactions, not a live MPWR portfolio or a trading signal.
- 6
- 4
- 2 / 4
- $6K – $90K
- sum of reported ranges
- 2026-06-05
Verified MPWR congressional disclosures
Parsed from official House Clerk and Senate eFD filings. This snapshot contains 2 purchases and 4 sales. Reported owners: Spouse, Self, Dependent, Joint. Transaction dates run from 2024-05-03 to 2026-06-05.
| Politician | Trade date | Asset | Type | Owner | Amount | Filing |
|---|---|---|---|---|---|---|
| Byron Donalds | Monolithic Power Systems, Inc. - Common Stock | Sale | Spouse | $1,001 - $15,000 | #20034968 Filed 2026-07-15 | |
| Byron Donalds | Monolithic Power Systems, Inc. - Common Stock | Sale | Self | $1,001 - $15,000 | #20034968 Filed 2026-07-15 | |
| Michael Guest | Monolithic Power Systems, Inc. - Common Stock | Purchase | Dependent | $1,001 - $15,000 | #20033416 Filed 2025-11-19 | |
| Robert Bresnahan | Monolithic Power Systems, Inc. - Common Stock | Purchase | Self | $1,001 - $15,000 | #20030291 Filed 2025-05-08 | |
| Robert Bresnahan | Monolithic Power Systems, Inc. - Common Stock | Sale | Joint | $1,001 - $15,000 | #20024346 Filed 2025-02-13 | |
| Tommy Tuberville | Monolithic Power Systems, Inc. - Common Stock | Sale | Joint | $1,001 - $15,000 | #0a25588d-a3f8-4ed6-971a-706097f78e3a Filed 2026-08-05 |
A filing can describe the member, a spouse, a dependent, or a joint asset. Amounts are statutory ranges, not execution prices. See how to read congressional stock-trade disclosures before treating a delayed row as a trading signal.
MPWR disclosures by member
| Member | Rows | Buys | Sells | Last trade |
|---|---|---|---|---|
| Byron Donalds | 2 | 0 | 2 | 2026-06-05 |
| Robert Bresnahan | 2 | 1 | 1 | 2025-04-08 |
| Michael Guest | 1 | 1 | 0 | 2025-10-20 |
| Tommy Tuberville | 1 | 0 | 1 | 2024-05-03 |
How long disclosure took
Days from trade date to filing date for 6 rows. The STOCK Act allows 30 days from notification and no more than 45 days from the trade. A late row is a timing fact, not evidence of wrongdoing.
- 0–15 days
- 0
- 16–30 days
- 2
- 31–45 days
- 3
- Over 45 days
- 1
- Median / longest
- 36d / 824d
Source documents
5 House Clerk and Senate eFD periodic transaction reports, newest first. Each link opens the official filing.
- #0a25588d-a3f8-4ed6-971a-706097f78e3aFiled 2026-08-05 · 1 row
- #20034968Filed 2026-07-15 · 2 rows
- #20033416Filed 2025-11-19 · 1 row
- #20030291Filed 2025-05-08 · 1 row
- #20024346Filed 2025-02-13 · 1 row
What MPWR filings don’t tell you
A disclosure row records a trade date, an amount bracket, and who owned the asset. It does not say why the trade was made, whether the position is still held, or anything about the business behind the ticker: revenue trends, margins, balance-sheet risk, or valuation. Those answers are in company filings, not congressional ones.
- Monolithic Power Systems, Inc. financials and filings
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MPWR congressional trades: FAQ
Who in Congress traded MPWR?
House Clerk and Senate eFD periodic reports for 2025 and 2026 contain 6 verified MPWR rows from 4 members: Byron Donalds, Michael Guest, Robert Bresnahan, and Tommy Tuberville. Image-only filings are excluded, and this is not a live brokerage statement.
Does this page show current MPWR holdings?
No. STOCK Act filings disclose reportable transactions after the fact, usually within 45 days, as amount ranges and owners. They do not prove a current position, an exact share count, or why the trade happened.
Why are MPWR amounts shown as ranges?
Congressional periodic transaction reports use statutory value bands such as $1,001 - $15,000. Yield Theory keeps those ranges instead of inventing a midpoint, exact trade size, or return.
How complete is MPWR congressional-trade coverage?
This snapshot covers every machine-readable House and Senate periodic transaction report for 2025 and 2026 (177 members). Image-only House filings and paper Senate filings are not included, so missing rows are not proof that no other lawmaker traded MPWR.
Yield Theory is not affiliated with any elected official. This page uses the 2025–2026 House Clerk and Senate eFD periodic report snapshot generated 2026-10-09. It is not a complete lifetime portfolio, a performance track record, or investment advice.
A disclosure is not a thesis.
This page shows who reported MPWR and in what range. Membership is the monthly sourced call, plus a five-minute check when the evidence moves. $39/month or $249/year.
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