Form 4: Maurice Sciammas Executes MPWR Stock Sale

EVP of Worldwide Sales & Marketing Maurice Sciammas sold 30 shares of Monolithic Power Systems common stock via a 10b5-1 plan.

Summary

• Maurice Sciammas, EVP of Worldwide Sales & Marketing at Monolithic Power Systems, sold 30 shares of common stock.
• The transaction occurred on June 1, 2026, at a price of $1,533.95 per share.
• The sale was executed through the Clement Sciammas Trust.
• The transaction was conducted under a pre-established Rule 10b5-1 trading plan adopted on November 19, 2025.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the sale was a minor, pre-planned transaction by an executive.

Positives

• The sale was executed pursuant to a pre-planned Rule 10b5-1 trading plan, which is a standard mechanism for executives to sell shares without concerns regarding insider trading.

Negatives

• The transaction represents a reduction in the reporting person's indirect beneficial ownership.

Risks

• None identified; this is a routine executive stock transaction.

Future Outlook

No forward-looking guidance provided in this filing.

Industry Context

StockSavvy.ai notes that routine executive selling under 10b5-1 plans is common practice in the semiconductor industry and generally does not signal a change in company fundamentals or management sentiment.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for corporate officers to manage equity holdings while maintaining regulatory compliance.

Stakeholder Impact

• Minimal impact on shareholders as the transaction volume is negligible relative to total outstanding shares.

Next Steps

• No future actions or milestones mentioned.

Key Dates

Keywords

Monolithic Power Systems, MPWR, Insider Trading, Form 4, Executive Stock Sale, Rule 10b5-1