Form 4: MPWR CFO Sells Shares Under 10b5-1 Plan

Monolithic Power Systems' EVP and CFO, Theodore Blegen, sold 3,060 shares of common stock on February 2, 2026, through a pre-arranged 10b5-1 trading plan.

Summary

• Theodore Blegen, Executive Vice President and Chief Financial Officer of Monolithic Power Systems Inc. (MPWR), reported the sale of 3,060 shares of common stock.
• The transactions occurred on February 2, 2026, with sale prices ranging from $1,110.14 to $1,139.54 per share.
• These sales were executed pursuant to a Rule 10b5-1 trading plan, which was adopted by Mr. Blegen on February 26, 2025.
• Following these transactions, Mr. Blegen directly beneficially owns 65,333 shares of common stock.
• Additionally, Mr. Blegen indirectly beneficially owns 5,331 shares through an Irrevocable Trust FBO Sarah N. Blegen and 5,331 shares through an Irrevocable Trust FBO Theodore F. Blegen.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a routine, pre-scheduled insider transaction under a 10b5-1 plan, which typically has a neutral impact on market sentiment as it's not indicative of new information.

Negatives

• The EVP and CFO sold a total of 3,060 shares of company common stock.

Industry Context

StockSavvy.ai notes that routine insider sales under a 10b5-1 plan are common for executives managing personal finances and typically do not signal a change in company fundamentals or outlook, especially in the semiconductor industry where executive compensation often includes significant equity.

Related Party Transactions

• The reporting person has indirect beneficial ownership of shares held in Irrevocable Trusts for Sarah N. Blegen and Theodore F. Blegen.

Stakeholder Impact

• Shareholders may note the insider selling, but the pre-established 10b5-1 plan generally mitigates concerns about the timing or motivation of the sales.

Key Dates

Recommendation

The insider sales by the EVP and CFO are part of a pre-established 10b5-1 trading plan, which suggests these are routine personal financial management actions rather than a signal of deteriorating company fundamentals. Given the pre-planned nature, this event alone does not warrant a change in investment thesis, thus a 'hold' recommendation is appropriate.

Keywords

Monolithic Power Systems, MPWR, Insider Trading, Form 4, Theodore Blegen, Stock Sale, 10b5-1 Plan, Executive Compensation