Form 4: MPWR Executive Plans Stock Sale Under 10b5-1 Plan

Monolithic Power Systems EVP & General Counsel Saria Tseng will sell 1,300 shares of common stock for $1,087.62 per share under a pre-arranged trading plan.

Summary

• Saria Tseng, Executive Vice President and General Counsel of Monolithic Power Systems Inc. (MPWR), reported a planned disposition of common stock.
• The transaction involves the sale of 1,300 shares of MPWR common stock.
• The shares are scheduled to be sold at a price of $1,087.62 per share.
• The transaction date for this sale is October 24, 2025.
• This sale is being conducted pursuant to a Rule 10b5-1 trading plan, which Ms. Tseng adopted on August 30, 2024.
• Following this planned transaction, Ms. Tseng will beneficially own 126,354 shares of Monolithic Power Systems common stock directly.

Sentiment

Score: 5

Explanation: The filing reports a pre-scheduled insider stock sale under a Rule 10b5-1 plan, which is a routine liquidity event and does not inherently indicate positive or negative sentiment regarding the company's future performance.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This filing reports a routine insider transaction and does not provide information directly related to broader industry trends or competitive landscape.

Stakeholder Impact

• Shareholders: The sale is a routine, pre-scheduled insider transaction and is unlikely to have a significant direct impact on shareholders, as it does not signal new information about the company's fundamentals.

Key Dates

Recommendation

The reported transaction is a pre-scheduled sale of shares by an executive under a Rule 10b5-1 trading plan. Such sales are typically for personal financial planning and do not usually reflect a change in the company's fundamental outlook or warrant a change in investment recommendation. Investors should view this as a routine insider liquidity event rather than a signal of deteriorating company prospects.

Keywords

Monolithic Power Systems, MPWR, Saria Tseng, Insider Trading, Stock Sale, 10b5-1 Plan, Executive Compensation, SEC Form 4