Insider txns (12m)
351
Stock / equity
MPWR MONOLITHIC POWER SYSTEMS INC
- Company
- MONOLITHIC POWER SYSTEMS INC
- Security
- Equity
- Size, estimated from filings
- Large cap ($10B – $200B)
- Insiders on record
- 12
- Members of Congress
- 4
- Latest trade on record
- September 28, 2026
MPWR (MONOLITHIC POWER SYSTEMS INC) has 351 disclosed insider transactions from 12 insiders in the last 12 months (0 open-market buys, 319 sales, about $1.10B at reported prices) and 7 congressional trades from 4 members of Congress. The most recent disclosure was filed September 30, 2026.
Open-market buys / sales
0 / 319
Congress trades (12m)
7
Distinct filers (12m)
16
Share price
Price and chart by TradingView for MONOLITHIC POWER SYSTEMS INC. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.
MPWR in charts
Who is trading this stock
Which people account for the buying and selling over the last 12 months?
BoughtSold
8 people account for the disclosed buying and selling in MPWR over the last 12 months; the most active is Hsing Michael with $488M.
Prices insiders traded at
What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.
▲ Bought▼ SoldAverage reported price that day
Insiders reported 330 open-market trades in MPWR since Oct 1, 2025, at prices from $863 to $1,700; the most recent was a sale at $1,323 on Sep 28, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.
Insider holdings over time
Is an insider building or unwinding a position? Shares held directly after each filing.
Sciammas MauriceTseng Saria
Sciammas Maurice reported 36,062 shares held after the latest filing, against 237,849 at the first on record.
Insiders trading MPWR
Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.
| Insider | Role | Rows | Bought | Sold | Value bought | Value sold | Latest |
|---|---|---|---|---|---|---|---|
| Hsing Michael | CEO | 93 | 0 | 90 | — | $488.5M | September 28, 2026 |
| BLEGEN THEODORE | EVP and CFO | 81 | 0 | 79 | — | $93.2M | February 6, 2026 |
| Tseng Saria | EVP & General Counsel | 74 | 0 | 67 | — | $210.7M | August 31, 2026 |
| Sciammas Maurice | EVP, WW Sales & Marketing | 71 | 0 | 62 | — | $161.2M | August 4, 2026 |
| Elmiger Eugen J | Director | 10 | 0 | 9 | — | $19.0M | May 6, 2026 |
| Lee Victor K | Director | 9 | 0 | 8 | — | $2.0M | February 9, 2026 |
| DEAN ROBERT W II | Interim CFO | 8 | 0 | 5 | — | $234K | August 24, 2026 |
| Xiao Deming | EVP, Global Operations | 8 | 0 | 6 | — | $136.2M | May 6, 2026 |
| CHANG KUO WEI HERBERT | Director | 5 | 0 | 4 | — | $312K | August 24, 2026 |
| Zhou Jeff | Director | 5 | 0 | 4 | — | $3.3M | May 26, 2026 |
| Wynne Eileen | Director | 2 | 0 | 1 | — | $530K | May 6, 2026 |
| Martinez Carintia | Director | 1 | 0 | 0 | — | — | February 3, 2026 |
What kind of transactions these are 5 Form 4 codes
| Code | Meaning | Rows | Shares | Value at reported prices |
|---|---|---|---|---|
| S | Open-market sale | 330 | 635,391 | $749.0M |
| A | Grant or award | 17 | 1,146,743 | — |
| G | Gift | 13 | 93,195 | — |
| F | Shares withheld for tax | 5 | 333,845 | $366.1M |
| J | Other acquisition or disposal | 2 | 2,161 | — |
What each code means: Form 4 transaction codes.
Members of Congress trading MPWR
Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.
| Member | Seat | Trades | Bought | Sold | Range as filed | Latest |
|---|---|---|---|---|---|---|
| Markwayne Mullin | Senator (OK), Republican | 3 | 3 | 0 | $45K–$150K | February 4, 2026 |
| Byron Donalds | Representative (FL, District 19), Republican | 2 | 0 | 2 | $2,002–$30K | June 5, 2026 |
| Michael Guest | Representative (MS, District 3), Republican | 1 | 1 | 0 | $1,001–$15K | October 20, 2025 |
| Tommy Tuberville | Senator (AL), Republican | 1 | 0 | 1 | $1,001–$15K | May 3, 2024 |
Insider transactions
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 130 | $1,357 | $176K | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 10,967 | $1,351 | $14.8M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 6,343 | $1,347 | $8.5M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 5,783 | $1,344 | $7.8M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 2,949 | $1,339 | $3.9M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 1,111 | $1,333 | $1.5M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 2,121 | $1,329 | $2.8M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | September 28, 2026 | September 30, 2026 | 2d | 596 | $1,323 | $789K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Other G | August 31, 2026 | September 2, 2026 | 2d | 2,000 | — | — | indirect | Form 4 ↗ | |
| Tseng Saria | Other G | August 31, 2026 | September 2, 2026 | 2d | 2,000 | — | — | Form 4 ↗ | ||
| DEAN ROBERT W II | Other J | August 24, 2026 | August 26, 2026 | 2d | 5 | — | — | Form 4 ↗ | ||
| DEAN ROBERT W II | Sell S | August 24, 2026 | August 26, 2026 | 2d | 32 | $1,298 | $42K | Form 4 ↗ | ||
| CHANG KUO WEI HERBERT | Sell S | August 24, 2026 | August 25, 2026 | 1d | 50 | $1,282 | $64K | Form 4 ↗ | ||
| DEAN ROBERT W II | Sell S | August 17, 2026 | August 19, 2026 | 2d | 6 | $1,414 | $8,482 | Form 4 ↗ | ||
| CHANG KUO WEI HERBERT | Sell S | August 11, 2026 | August 13, 2026 | 2d | 50 | $1,420 | $71K | Form 4 ↗ | ||
| Sciammas Maurice | Other G | August 4, 2026 | August 6, 2026 | 2d | 25,000 | — | — | indirect | Form 4 ↗ | |
| Sciammas Maurice | Other G | August 4, 2026 | August 6, 2026 | 2d | 25,000 | — | — | Form 4 ↗ | ||
| DEAN ROBERT W II | Sell S | August 5, 2026 | August 6, 2026 | 1d | 105 | $1,344 | $141K | Form 4 ↗ | ||
| Sciammas Maurice | Sell S | August 3, 2026 | August 5, 2026 | 2d | 30 | $1,344 | $40K | 10b5-1 planindirect | Form 4 ↗ | |
| DEAN ROBERT W II | Other A | July 25, 2026 | July 28, 2026 | 3d | 1,359 | — | — | Form 4 ↗ | ||
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 110 | $1,406 | $155K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 117 | $1,400 | $164K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 213 | $1,396 | $297K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 50 | $1,388 | $69K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 410 | $1,384 | $567K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 418 | $1,379 | $576K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 472 | $1,375 | $649K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 240 | $1,369 | $329K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 50 | $1,359 | $68K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 5,640 | $1,353 | $7.6M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 1,506 | $1,349 | $2.0M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 1,864 | $1,344 | $2.5M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 1,460 | $1,340 | $2.0M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 776 | $1,335 | $1.0M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 464 | $1,329 | $617K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 409 | $1,324 | $541K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 274 | $1,318 | $361K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 15, 2026 | July 17, 2026 | 2d | 527 | $1,314 | $692K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | July 1, 2026 | July 6, 2026 | 5d | 30 | $1,352 | $41K | late10b5-1 planindirect | Form 4 ↗ | |
| Sciammas Maurice | Sell S | June 1, 2026 | June 3, 2026 | 2d | 30 | $1,534 | $46K | 10b5-1 planindirect | Form 4 ↗ | |
| Sciammas Maurice | Other G | May 29, 2026 | June 2, 2026 | 4d | 12,472 | — | — | indirect | Form 4 ↗ | |
| Tseng Saria | Sell S | May 27, 2026 | May 29, 2026 | 2d | 7,565 | $1,700 | $12.9M | Form 4 ↗ | ||
| DEAN ROBERT W II | Sell S | May 26, 2026 | May 28, 2026 | 2d | 22 | $1,650 | $36K | Form 4 ↗ | ||
| Zhou Jeff | Sell S | May 26, 2026 | May 27, 2026 | 1d | 486 | $1,680 | $816K | Form 4 ↗ | ||
| Tseng Saria | Sell S | May 22, 2026 | May 27, 2026 | 5d | 5,000 | $1,586 | $7.9M | late | Form 4 ↗ | |
| Tseng Saria | Other G | May 22, 2026 | May 27, 2026 | 5d | 200 | — | — | late | Form 4 ↗ | |
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 130 | $1,521 | $198K | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 352 | $1,518 | $534K | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 551 | $1,513 | $834K | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 3,769 | $1,508 | $5.7M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 2,929 | $1,503 | $4.4M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 608 | $1,499 | $912K | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 862 | $1,491 | $1.3M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 6,688 | $1,487 | $9.9M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 5,737 | $1,483 | $8.5M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 4,082 | $1,477 | $6.0M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 5,049 | $1,473 | $7.4M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 5,819 | $1,468 | $8.5M | Form 4 ↗ | ||
| Hsing Michael | Sell S | May 18, 2026 | May 20, 2026 | 2d | 3,424 | $1,463 | $5.0M | Form 4 ↗ | ||
| DEAN ROBERT W II | Sell S | May 18, 2026 | May 20, 2026 | 2d | 4 | $1,563 | $6,253 | Form 4 ↗ | ||
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 50 | $1,586 | $79K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 447 | $1,582 | $707K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 703 | $1,578 | $1.1M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 1,312 | $1,571 | $2.1M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 2,020 | $1,567 | $3.2M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 2,010 | $1,562 | $3.1M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 1,717 | $1,557 | $2.7M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 15, 2026 | May 19, 2026 | 4d | 3,741 | $1,550 | $5.8M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Other G | May 13, 2026 | May 15, 2026 | 2d | 1,563 | — | — | indirect | Form 4 ↗ | |
| Sciammas Maurice | Other G | May 13, 2026 | May 15, 2026 | 2d | 1,563 | — | — | indirect | Form 4 ↗ | |
| DEAN ROBERT W II | Other J | May 13, 2026 | May 15, 2026 | 2d | 2,156 | — | — | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 514 | $1,600 | $822K | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 2,619 | $1,596 | $4.2M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 1,355 | $1,591 | $2.2M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 2,587 | $1,587 | $4.1M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 1,879 | $1,582 | $3.0M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 834 | $1,576 | $1.3M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 1,078 | $1,572 | $1.7M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 814 | $1,566 | $1.3M | Form 4 ↗ | ||
| Elmiger Eugen J | Sell S | May 6, 2026 | May 8, 2026 | 2d | 320 | $1,560 | $499K | Form 4 ↗ | ||
| Xiao Deming | Sell S | May 6, 2026 | May 8, 2026 | 2d | 907 | $1,661 | $1.5M | Form 4 ↗ | ||
| Xiao Deming | Sell S | May 6, 2026 | May 8, 2026 | 2d | 11,597 | $1,658 | $19.2M | Form 4 ↗ | ||
| Xiao Deming | Sell S | May 6, 2026 | May 8, 2026 | 2d | 14,167 | $1,653 | $23.4M | Form 4 ↗ | ||
| Xiao Deming | Sell S | May 6, 2026 | May 8, 2026 | 2d | 3,329 | $1,648 | $5.5M | Form 4 ↗ | ||
| Wynne Eileen | Sell S | May 6, 2026 | May 8, 2026 | 2d | 335 | $1,583 | $530K | Form 4 ↗ | ||
| Zhou Jeff | Sell S | May 6, 2026 | May 6, 2026 | 0d | 500 | $1,650 | $825K | Form 4 ↗ | ||
| Zhou Jeff | Sell S | May 5, 2026 | May 6, 2026 | 1d | 500 | $1,600 | $800K | Form 4 ↗ | ||
| Zhou Jeff | Sell S | May 5, 2026 | May 6, 2026 | 1d | 514 | $1,574 | $809K | Form 4 ↗ | ||
| Sciammas Maurice | Sell S | May 5, 2026 | May 6, 2026 | 1d | 380 | $1,584 | $602K | indirect | Form 4 ↗ | |
| Sciammas Maurice | Sell S | May 4, 2026 | May 6, 2026 | 2d | 30 | $1,589 | $48K | 10b5-1 planindirect | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 120 | $1,322 | $159K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 840 | $1,319 | $1.1M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 4,244 | $1,313 | $5.6M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 1,279 | $1,308 | $1.7M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 800 | $1,303 | $1.0M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 400 | $1,292 | $517K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 120 | $1,287 | $154K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 240 | $1,280 | $307K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 360 | $1,270 | $457K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 8, 2026 | April 10, 2026 | 2d | 560 | $1,266 | $709K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 1,396 | $1,180 | $1.6M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 1,680 | $1,176 | $2.0M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 2,036 | $1,170 | $2.4M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 684 | $1,166 | $797K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 560 | $1,160 | $649K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 480 | $1,149 | $552K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 556 | $1,144 | $636K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 6, 2026 | April 8, 2026 | 2d | 244 | $1,140 | $278K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 1, 2026 | April 3, 2026 | 2d | 292 | $1,137 | $332K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 1, 2026 | April 3, 2026 | 2d | 188 | $1,136 | $214K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 1, 2026 | April 3, 2026 | 2d | 160 | $1,134 | $181K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 1, 2026 | April 3, 2026 | 2d | 184 | $1,132 | $208K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | April 1, 2026 | April 3, 2026 | 2d | 576 | $1,131 | $652K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | April 1, 2026 | April 3, 2026 | 2d | 30 | $1,116 | $33K | 10b5-1 planindirect | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 80 | $1,041 | $83K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 166 | $1,036 | $172K | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 2,440 | $1,029 | $2.5M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 2,200 | $1,023 | $2.3M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 3,194 | $1,017 | $3.2M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 3,360 | $1,010 | $3.4M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 9,080 | $1,005 | $9.1M | 10b5-1 plan | Form 4 ↗ | |
| Tseng Saria | Sell S | March 30, 2026 | April 1, 2026 | 2d | 5,154 | $1,001 | $5.2M | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | March 20, 2026 | March 24, 2026 | 4d | 30 | $1,095 | $33K | 10b5-1 planindirect | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 1,440 | $1,217 | $1.8M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 1,240 | $1,210 | $1.5M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 3,640 | $1,206 | $4.4M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 1,440 | $1,201 | $1.7M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 600 | $1,194 | $717K | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 160 | $1,188 | $190K | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 480 | $1,181 | $567K | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 200 | $1,173 | $235K | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 2,076 | $1,169 | $2.4M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 4,001 | $1,165 | $4.7M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 4,992 | $1,160 | $5.8M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 12, 2026 | February 17, 2026 | 5d | 12,731 | $1,156 | $14.7M | late10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 649 | $1,202 | $780K | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 14,578 | $1,197 | $17.5M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 6,079 | $1,193 | $7.3M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 2,104 | $1,188 | $2.5M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 1,542 | $1,183 | $1.8M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 2,799 | $1,178 | $3.3M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 1,987 | $1,173 | $2.3M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 1,533 | $1,168 | $1.8M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 1,366 | $1,164 | $1.6M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 11, 2026 | February 13, 2026 | 2d | 363 | $1,159 | $421K | 10b5-1 plan | Form 4 ↗ | |
| Sciammas Maurice | Sell S | February 11, 2026 | February 12, 2026 | 1d | 200 | $1,180 | $236K | indirect | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 280 | $1,197 | $335K | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 880 | $1,176 | $1.0M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 360 | $1,161 | $418K | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 694 | $1,155 | $802K | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 1,215 | $1,151 | $1.4M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 3,864 | $1,146 | $4.4M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 16,080 | $1,142 | $18.4M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 6,325 | $1,137 | $7.2M | 10b5-1 plan | Form 4 ↗ | |
| Hsing Michael | Sell S | February 10, 2026 | February 12, 2026 | 2d | 4,302 | $1,132 | $4.9M | 10b5-1 plan | Form 4 ↗ | |
| Lee Victor K | Sell S | February 9, 2026 | February 11, 2026 | 2d | 400 | $1,212 | $485K | 10b5-1 plan | Form 4 ↗ | |
| Xiao Deming | Sell S | February 6, 2026 | February 10, 2026 | 4d | 22,875 | $1,171 | $26.8M | Form 4 ↗ | ||
| Tseng Saria | Sell S | February 6, 2026 | February 10, 2026 | 4d | 22,875 | $1,171 | $26.8M | Form 4 ↗ | ||
| Sciammas Maurice | Sell S | February 6, 2026 | February 10, 2026 | 4d | 22,875 | $1,171 | $26.8M | Form 4 ↗ | ||
| BLEGEN THEODORE | Sell S | February 6, 2026 | February 10, 2026 | 4d | 21,725 | $1,171 | $25.4M | Form 4 ↗ | ||
| Hsing Michael | Sell S | February 6, 2026 | February 10, 2026 | 4d | 54,923 | $1,171 | $64.3M | Form 4 ↗ | ||
| Wynne Eileen | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| Zhou Jeff | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| CHANG KUO WEI HERBERT | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| Elmiger Eugen J | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| Lee Victor K | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| Martinez Carintia | Other A | February 3, 2026 | February 5, 2026 | 2d | 189 | — | — | Form 4 ↗ | ||
| Xiao Deming | Other A | February 3, 2026 | February 5, 2026 | 2d | 57,170 | — | — | Form 4 ↗ | ||
| BLEGEN THEODORE | Other A | February 3, 2026 | February 5, 2026 | 2d | 38,745 | — | — | Form 4 ↗ | ||
| Tseng Saria | Other A | February 3, 2026 | February 5, 2026 | 2d | 57,170 | — | — | Form 4 ↗ | ||
| Hsing Michael | Other A | February 3, 2026 | February 5, 2026 | 2d | 136,825 | — | — | Form 4 ↗ | ||
| Sciammas Maurice | Other A | February 3, 2026 | February 5, 2026 | 2d | 57,170 | — | — | Form 4 ↗ | ||
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 80 | $1,139 | $91K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 80 | $1,138 | $91K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 120 | $1,136 | $136K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 120 | $1,135 | $136K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 241 | $1,134 | $273K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 379 | $1,133 | $430K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 322 | $1,133 | $365K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 198 | $1,132 | $224K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 320 | $1,130 | $362K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 240 | $1,129 | $271K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 240 | $1,128 | $271K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 80 | $1,127 | $90K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 200 | $1,127 | $225K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 40 | $1,123 | $45K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 80 | $1,121 | $90K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 40 | $1,117 | $45K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | February 2, 2026 | February 4, 2026 | 2d | 220 | $1,111 | $244K | 10b5-1 plan | Form 4 ↗ | |
| Lee Victor K | Sell S | January 2, 2026 | January 6, 2026 | 4d | 600 | $931 | $559K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 80 | $947 | $76K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 40 | $945 | $38K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 650 | $944 | $614K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 539 | $944 | $509K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 74 | $942 | $70K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 406 | $942 | $382K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 40 | $940 | $38K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 117 | $940 | $110K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 460 | $939 | $432K | 10b5-1 plan | Form 4 ↗ | |
| BLEGEN THEODORE | Sell S | January 2, 2026 | January 6, 2026 | 4d | 120 | $937 | $112K | 10b5-1 plan | Form 4 ↗ |
Showing the 200 most recent of 367.
Congressional trades
| Filer | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| Tommy Tuberville | Sell | May 3, 2024 | August 5, 2026 | — | — | — | $1,001–$15K | joint | Senate PTR ↗ | |
| Byron Donalds | Sell | June 5, 2026 | July 15, 2026 | 40d | — | — | $1,001–$15K | House PTR ↗ | ||
| Byron Donalds | Sell | June 5, 2026 | July 15, 2026 | 40d | — | — | $1,001–$15K | spouse | House PTR ↗ | |
| Markwayne Mullin | Buy | February 4, 2026 | March 2, 2026 | 26d | — | — | $15K–$50K | joint | Senate PTR ↗ | |
| Markwayne Mullin | Buy | January 5, 2026 | February 4, 2026 | 30d | — | — | $15K–$50K | Senate PTR ↗ | ||
| Markwayne Mullin | Buy | January 5, 2026 | February 4, 2026 | 30d | — | — | $15K–$50K | spouse | Senate PTR ↗ | |
| Michael Guest | Buy | October 20, 2025 | November 19, 2025 | 30d | — | — | $1,001–$15K | dependent | House PTR ↗ |
Related stocks
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Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- How to read a congressional trade report Owner tells you whose asset it was: the member, the spouse, a dependent child, or held jointly.
- Why congressional trade amounts are ranges There are ten ranges; the lowest is $1,001–$15,000 and the highest is over $50,000,000.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| House Clerk, periodic transaction reports | 2 | 3 | November 19, 2025 | July 15, 2026 | House Clerk search |
| Senate eFD, periodic transaction reports | 3 | 4 | February 4, 2026 | August 5, 2026 | Senate eFD search |
| SEC EDGAR, Form 4 | 88 | 367 | October 1, 2025 | September 30, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.
Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.