Form 4: Monolithic Power Executive Plans Share Sale for Tax

Monolithic Power Systems EVP Maurice Sciammas reported a scheduled disposition of 54,543 shares of common stock on October 30, 2025, to cover tax liabilities.

Summary

• Maurice Sciammas, EVP, WW Sales & Marketing at Monolithic Power Systems Inc. (MPWR), reported a scheduled transaction for October 30, 2025.
• On October 30, 2025, 54,543 shares of common stock are scheduled to be disposed of at a price of $1,096.63 per share.
• This disposition is intended to satisfy income tax obligations in connection with the earnout and vesting of market-based restricted stock units that were granted in October 2022.
• Following this scheduled transaction, Sciammas will directly own 183,306 shares of common stock.
• Sciammas will also indirectly own 96,230 shares of common stock through various trusts and brokerage accounts.

Sentiment

Score: 5

Explanation: The transaction is a routine disposition of shares to cover tax liabilities associated with the vesting of restricted stock units, which is a common practice for executives. It does not reflect a change in the company's operational performance or strategic direction, thus indicating a neutral sentiment.

Future Outlook

This filing reports a scheduled executive compensation-related transaction and does not provide any forward-looking statements or guidance regarding the company's future performance or strategic direction.

Industry Context

This is a routine insider transaction related to executive compensation and tax obligations, which is a common occurrence across publicly traded companies. It does not provide specific insights into broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine tax-related disposition of shares by an executive, not a sale into the open market for personal reasons that might signal a lack of confidence.
• Employees: No direct impact mentioned.

Key Dates

Recommendation

This Form 4 filing details a scheduled, routine tax-related disposition of shares by an executive following the vesting of restricted stock units. Such transactions are common and do not typically reflect a change in the company's fundamental performance or outlook. Therefore, it provides no new information that would warrant a change in investment recommendation, suggesting a 'hold' position.

Keywords

Monolithic Power Systems, MPWR, Insider Transaction, Form 4, Stock Disposition, Tax Withholding, Restricted Stock Units, Executive Compensation, Maurice Sciammas