MPWR (NASDAQ: MPWR) EVP logs small 30-share sale under 10b5-1 plan
Filing Impact
Filing Sentiment
Form Type
4
Rhea-AI Filing Summary
Monolithic Power Systems EVP Maurice Sciammas reported an open-market sale of 30 shares of common stock on March 20, 2026. The sale was executed indirectly through the Clement Sciammas Trust at a weighted average price of $1,095.07 per share, with individual prices ranging from $1,094.79 to $1,095.19. Following the sale, the trust held 1,269 shares, while Sciammas also reported 178,644 shares held directly and additional indirect holdings through various family trusts and accounts. The transaction was carried out under a Rule 10b5-1 trading plan adopted on November 19, 2025.
Positive
- None.
Negative
- None.
Insider Trade Summary 10b5-1
Net Seller: 30 shares ($32,852)
Net Sell
12 txns
Insider
Sciammas Maurice
Role
EVP, WW Sales & Marketing
Sold
30 shs ($33K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Common Stock | 30 | $1,095.07 | $33K |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
| holding | Common Stock | -- | -- | -- |
Holdings After Transaction:
Common Stock — 1,269 shares (Indirect, Clement Sciammas Trust);
Common Stock — 178,644 shares (Direct)
Footnotes (1)
- Ending balance includes 19 shares acquired on February 17, 2026 through the Company's qualified ESPP program. These transactions were made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025. The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,094.79 to $1,095.19. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
FAQ
What insider transaction did MPWR executive Maurice Sciammas report on March 20, 2026?
Maurice Sciammas reported an open-market sale of 30 shares of Monolithic Power Systems common stock. The sale was executed indirectly through the Clement Sciammas Trust on March 20, 2026, and reflects a small portion of his overall reported direct and indirect holdings.
Was the March 20, 2026 MPWR insider sale by Maurice Sciammas part of a Rule 10b5-1 plan?
Yes. The filing states these transactions were made under a Rule 10b5-1 trading plan adopted on November 19, 2025. Such pre-arranged plans allow executives to schedule trades in advance, helping separate routine portfolio management from discretionary timing decisions.
How is the March 2026 MPWR insider sale by Maurice Sciammas characterized in the Form 4?
The transaction is coded as an open-market sale of common stock. It involves 30 shares sold indirectly via the Clement Sciammas Trust, with numerous other trust and direct holdings disclosed, suggesting the sale represents only a modest fraction of his reported ownership position.