MPWR.NASDAQMonolithic Power Systems INC
Form 4: Monolithic Power Systems Executive Sells Shares
Sentiment:
Insider Transaction (Form 4)
Maurice Sciammas, EVP, WW Sales & Marketing of Monolithic Power Systems Inc, sold 15,000 shares of common stock on July 15, 2026.
Summary
- Open-market sale: disposed of 527 Common Stock at $1,314.03 ($692,494) on July 15, 2026; holds 166,117 after (Direct).
- Open-market sale: disposed of 274 Common Stock at $1,318.42 ($361,247) on July 15, 2026; holds 165,843 after (Direct).
- Open-market sale: disposed of 409 Common Stock at $1,323.93 ($541,487) on July 15, 2026; holds 165,434 after (Direct).
- Open-market sale: disposed of 464 Common Stock at $1,329.30 ($616,795) on July 15, 2026; holds 164,970 after (Direct).
- Open-market sale: disposed of 776 Common Stock at $1,334.59 ($1,035,642) on July 15, 2026; holds 164,194 after (Direct).
- Open-market sale: disposed of 1,460 Common Stock at $1,339.59 ($1,955,801) on July 15, 2026; holds 162,734 after (Direct).
- Open-market sale: disposed of 1,864 Common Stock at $1,344.16 ($2,505,514) on July 15, 2026; holds 160,870 after (Direct).
- Open-market sale: disposed of 1,506 Common Stock at $1,348.91 ($2,031,458) on July 15, 2026; holds 159,364 after (Direct).
- Open-market sale: disposed of 5,640 Common Stock at $1,352.95 ($7,630,638) on July 15, 2026; holds 153,724 after (Direct).
- Open-market sale: disposed of 50 Common Stock at $1,359.36 ($67,968) on July 15, 2026; holds 153,674 after (Direct).
- Open-market sale: disposed of 240 Common Stock at $1,369.18 ($328,603) on July 15, 2026; holds 153,434 after (Direct).
- Open-market sale: disposed of 472 Common Stock at $1,375.47 ($649,222) on July 15, 2026; holds 152,962 after (Direct).
- Open-market sale: disposed of 418 Common Stock at $1,378.73 ($576,309) on July 15, 2026; holds 152,544 after (Direct).
- Open-market sale: disposed of 410 Common Stock at $1,384.11 ($567,485) on July 15, 2026; holds 152,134 after (Direct).
- Open-market sale: disposed of 50 Common Stock at $1,388.19 ($69,410) on July 15, 2026; holds 152,084 after (Direct).
- Open-market sale: disposed of 213 Common Stock at $1,396.16 ($297,382) on July 15, 2026; holds 151,871 after (Direct).
- Open-market sale: disposed of 117 Common Stock at $1,400.45 ($163,853) on July 15, 2026; holds 151,754 after (Direct).
- Open-market sale: disposed of 110 Common Stock at $1,405.71 ($154,628) on July 15, 2026; holds 151,644 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative but low-conviction signal: an insider sold $20,245,937 of stock under a pre-arranged Rule 10b5-1 plan, which is typically routine.
Insider Transactions
Maurice Sciammas — Officer (EVP, WW Sales & Marketing)
Transaction made under a Rule 10b5-1 trading plan.
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-07-15 | Open-market sale | Common Stock | 527 | $1.3K | $692.5K | 166,117 |
| 2026-07-15 | Open-market sale | Common Stock | 274 | $1.3K | $361.2K | 165,843 |
| 2026-07-15 | Open-market sale | Common Stock | 409 | $1.3K | $541.5K | 165,434 |
| 2026-07-15 | Open-market sale | Common Stock | 464 | $1.3K | $616.8K | 164,970 |
| 2026-07-15 | Open-market sale | Common Stock | 776 | $1.3K | $1.0M | 164,194 |
| 2026-07-15 | Open-market sale | Common Stock | 1,460 | $1.3K | $2.0M | 162,734 |
| 2026-07-15 | Open-market sale | Common Stock | 1,864 | $1.3K | $2.5M | 160,870 |
| 2026-07-15 | Open-market sale | Common Stock | 1,506 | $1.3K | $2.0M | 159,364 |
| 2026-07-15 | Open-market sale | Common Stock | 5,640 | $1.4K | $7.6M | 153,724 |
| 2026-07-15 | Open-market sale | Common Stock | 50 | $1.4K | $68.0K | 153,674 |
| 2026-07-15 | Open-market sale | Common Stock | 240 | $1.4K | $328.6K | 153,434 |
| 2026-07-15 | Open-market sale | Common Stock | 472 | $1.4K | $649.2K | 152,962 |
| 2026-07-15 | Open-market sale | Common Stock | 418 | $1.4K | $576.3K | 152,544 |
| 2026-07-15 | Open-market sale | Common Stock | 410 | $1.4K | $567.5K | 152,134 |
| 2026-07-15 | Open-market sale | Common Stock | 50 | $1.4K | $69.4K | 152,084 |
| 2026-07-15 | Open-market sale | Common Stock | 213 | $1.4K | $297.4K | 151,871 |
| 2026-07-15 | Open-market sale | Common Stock | 117 | $1.4K | $163.9K | 151,754 |
| 2026-07-15 | Open-market sale | Common Stock | 110 | $1.4K | $154.6K | 151,644 |
Key Dates
| Date | Description |
|---|---|
| 2026-07-15 | Open-market sale (527 shares) |
| 2026-07-15 | Open-market sale (274 shares) |
| 2026-07-15 | Open-market sale (409 shares) |
| 2026-07-15 | Open-market sale (464 shares) |
| 2026-07-15 | Open-market sale (776 shares) |
| 2026-07-15 | Open-market sale (1,460 shares) |
| 2026-07-15 | Open-market sale (1,864 shares) |
| 2026-07-15 | Open-market sale (1,506 shares) |
| 2026-07-15 | Open-market sale (5,640 shares) |
| 2026-07-15 | Open-market sale (50 shares) |
| 2026-07-15 | Open-market sale (240 shares) |
| 2026-07-15 | Open-market sale (472 shares) |
| 2026-07-15 | Open-market sale (418 shares) |
| 2026-07-15 | Open-market sale (410 shares) |
| 2026-07-15 | Open-market sale (50 shares) |
| 2026-07-15 | Open-market sale (213 shares) |
| 2026-07-15 | Open-market sale (117 shares) |
| 2026-07-15 | Open-market sale (110 shares) |
Keywords
insider transaction, Form 4, MPWR, MONOLITHIC POWER SYSTEMS, INC., bearish, Maurice Sciammas
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