Monolithic Power Systems, Inc. (MPWR)
Quote, stock score, analyst consensus, and SEC filings, plus insider and Congress trades when there are any.
NasdaqGS · Price as of · Nasdaq Real Time Price
- Profitability13/20
Profitable but shrinking: $793.8M over the last four reported quarters, down from $1.70B the year before.
- Insider buying vs selling11/20
Insiders are sellers only: 52 sells worth $142.0M, no open-market buys, across the last 20 Form 4s. Routine executive selling is common, so this is only a mild negative. Separately, 1 new 5%+ stake disclosure (13D/13G) hit in the last 6 months, which is big-money accumulation.
- Dilution and offerings11/15
Share count up 2.6% in a year. Mild dilution.
- Analysts15
- Implied upside+49.6%
- Target range$1,500.00 to $2,100.00
- EPS expected$7.75 +64%
- A year ago$4.73
- Revenue expected$1.16B +57%
- Estimate range$7.66 to $8.02
MPWR closed at $1,211.89 on Oct 27, down 10.3% since Sep 28. Chart read: price below both the 50-day and 200-day moving averages; the 50-day is below the 200-day (downtrend structure); trading at 43% of the 52-week range ($856.96 to $1689.89).
Insider buying and selling at Monolithic Power Systems, Inc. (MPWR)
The most recent Form 4 on record for Monolithic Power Systems, Inc. (MPWR) is September 28, 2026, when Michael Hsing, CEO, sold $40.3M of stock. That sale ran under a pre-arranged 10b5-1 plan, so it was scheduled ahead of time rather than decided that week.
| Insider | Action | Value | Date | Type |
|---|---|---|---|---|
| Michael Hsing · CEO | Sell | $40.3M | September 28, 2026 | Routine |
| Michael Hsing · CEO | Sell | $59.3M | May 18, 2026 | Red flag |
| Deming Xiao · EVP, Global Operations | Sell | $49.6M | May 6, 2026 | Red flag |
| Michael Hsing · CEO | Sell | $39.2M | February 11, 2026 | Routine |
| Michael Hsing · CEO | Sell | $64.3M | February 6, 2026 | No decision |
Filed notices to sell
A Form 144 is filed beforean insider sells restricted stock. The Form 4 reporting the completed trade isn't due until two business days after the sale, so these land first. They are intentions, not transactions.
| Insider | Value | Filed | Status | Type |
|---|---|---|---|---|
| Hsing Michael · Officer, Director | $40.3M | September 28, 2026 | Executed | Routine |
| DEAN ROBERT W II · Officer | $41,527 | August 24, 2026 | Not yet reported | Vested shares |
| DEAN ROBERT W II · Officer | $8,128 | August 17, 2026 | Not yet reported | Vested shares |
| CHANG KUO WEI HERBERT · Director | $142,000 | August 11, 2026 | Executed | Vested shares |
| DEAN ROBERT W II · Officer | $141,148 | August 5, 2026 | Executed | Vested shares |
Congress trades in MPWR
| Date | Member | Action | Amount | |
|---|---|---|---|---|
| 2026-06-05 | Byron Donalds FL | Sale | $1,001 - $15,000 | |
| 2026-06-05 | Byron Donalds FL | Sale | $1,001 - $15,000 |
SEC filings
| Form | Filed | Description |
|---|---|---|
| 4 | September 30, 2026 | PRIMARY DOCUMENT |
| 144 | September 28, 2026 | View on EDGAR |
| 8-K | September 10, 2026 | 8-K |
| 4 | September 2, 2026 | PRIMARY DOCUMENT |
| 4 | August 26, 2026 | PRIMARY DOCUMENT |
| 4 | August 25, 2026 | PRIMARY DOCUMENT |
| 144 | August 24, 2026 | View on EDGAR |
| 4 | August 19, 2026 | PRIMARY DOCUMENT |
Frequently asked questions
When does MPWR report earnings?
Monolithic Power Systems, Inc. (MPWR) is scheduled to report quarterly results on October 29, 2026, after the close. The 14-analyst consensus is $7.75 per share on revenue of $1.16B for the quarter ended September 30, 2026, against $4.73 and $737.2M a year earlier. It has beaten the consensus EPS estimate in all four of the last four quarters.
What do analysts expect for MPWR?
15 analysts cover Monolithic Power Systems, Inc. (MPWR). The consensus rating is Strong buy. The average price target is $1,799.80, in a range of $1,500.00 to $2,100.00.
Are insiders buying or selling MPWR?
We track Form 4 filings for Monolithic Power Systems, Inc. (MPWR). The activity listed on this page shows 5 qualifying sales. Each row is labelled Routine when the filer declared a pre-arranged 10b5-1 plan, Tax withholding when shares were sold automatically to cover the tax on a vest, or Own call when neither applies.
Where can I see MPWR SEC filings?
Recent filings are listed on this page, newest first. The latest is a 4 filed September 30, 2026.