Masimo Corporation Congressional Trading
According to U.S. congressional financial disclosures filed under the STOCK Act, members of Congress have reported 11 trades in Masimo Corporation (NASDAQ: MASI) since 2015, across 4 members, worth an estimated $371.01K in disclosed volume (the midpoint of the dollar ranges members report, not exact amounts). 6 buys against 5 sells, a modestly buy-led skew, with Democratic members responsible for 36% of the trades and Republican members 64%. These figures are drawn from public House and Senate periodic transaction reports and reflect what members were required to disclose, not the current market value of any position. For the full record, including the month-by-month buy and sell timeline, the party breakdown, top buyers and sellers, and every individual filing, see the Masimo Corporation (MASI) stock overview and the complete trade table below.
Data updated
Price & congressional trade timeline
Party breakdown
Masimo congressional trading activity
| Politician | Published | Traded | Filed After | Type | Size | Return | |
|---|---|---|---|---|---|---|---|
 Kevin Hern House | Oct 16, 2025 | Sep 26, 2025 | 20 days | SELL |  $15,001 - $50,000 | +26.44% |
Masimo (MASI) congressional trading FAQ
Can members of Congress legally trade Masimo (MASI) stock?
Yes. Members of Congress are permitted to trade individual stocks, including Masimo (MASI), but the STOCK Act of 2012 requires them to publicly disclose each transaction within 45 days. BullishWhales tracks those disclosures; it does not imply any trade was improper.
Are congressional Masimo (MASI) trades public?
Yes. Every congressional trade in Masimo (MASI) on this page comes from mandatory public STOCK Act disclosure filings, which are filed with a delay and may be revised.
How many times has Congress traded Masimo (MASI)?
Members of Congress have disclosed 11 trades in Masimo (MASI) worth $371.01K across 4 members, according to public STOCK Act filings.
Which members of Congress have traded Masimo (MASI)?
Recent and active filers of Masimo (MASI) disclosures include Kevin Hern. The full member-by-member trade list is on this page.
Do Democrats or Republicans trade Masimo (MASI) more?
Across disclosed Masimo (MASI) trades, 36% were by Democrats and 64% by Republicans, led by Republicans (64%).
What is the most recent congressional Masimo (MASI) trade?
The most recent disclosed Masimo (MASI) trade was a sale by Kevin Hern, filed Oct 15, 2025.
Browse all stocks Congress tradesCongressional trading overviewMasimo (MASI) stock overview
Not investment advice. Congressional trading data is sourced from public STOCK Act disclosures, which are filed with a delay and may contain errors or be revised. The Tide Score and other figures are generated algorithmically from public filings and market data and describe historical activity, not a recommendation. Always do your own research and consult a licensed financial advisor before making investment decisions.