Form 4: Monolithic Power Systems CFO Sells $4.5 Million in Company Stock Under Pre-Arranged Plan

Monolithic Power Systems' Executive Vice President and CFO, Theodore Blegen, sold 6,000 shares of common stock for $4.5 million on July 1, 2025, pursuant to a Rule 10b5-1 trading plan.

Summary

• Theodore Blegen, Executive Vice President and Chief Financial Officer of Monolithic Power Systems Inc. (MPWR), reported a transaction involving the company's common stock.
• On July 1, 2025, Mr. Blegen disposed of 6,000 shares of common stock at a price of $750 per share, totaling $4,500,000.
• This transaction was executed pursuant to a Rule 10b5-1(c) contract, instruction, or written plan for the purchase or sale of equity securities.
• Following the reported transaction, Mr. Blegen directly beneficially owns 46,939 shares of common stock, which includes 27 shares acquired on February 17, 2025, through the Company's qualified ESPP program.
• Additionally, Mr. Blegen indirectly beneficially owns 5,331 shares through an Irrevocable Trust FBO Theodore F. Blegen and another 5,331 shares through an Irrevocable Trust FBO Sarah N. Blegen.

Sentiment

Score: 6

Explanation: The sale of shares by a key executive, while pre-planned under a 10b5-1 agreement, can still be viewed with slight caution by investors, though it doesn't necessarily reflect a negative outlook on the company's future. The pre-planned nature mitigates significant negative sentiment.

Positives

• The sale was conducted under a Rule 10b5-1(c) plan, indicating it was a pre-scheduled transaction rather than a reaction to new, non-public information, which can mitigate concerns about insider selling.

Negatives

• An insider sale by a key executive like the CFO, even if pre-planned, can sometimes be perceived negatively by investors as it reduces the executive's direct stake in the company.

Risks

• No specific risks are detailed in this Form 4 filing beyond the general market perception associated with insider stock sales.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance regarding the company's future outlook.

Industry Context

This Form 4 filing is a routine disclosure of an insider stock transaction and does not provide information related to broader industry trends or competitor activities.

Related Party Transactions

• Indirect beneficial ownership is reported through Irrevocable Trusts FBO Theodore F. Blegen and Sarah N. Blegen, which are related parties.

Stakeholder Impact

• Shareholders: Insider transactions, even pre-planned, are closely watched by shareholders as they can influence market perception and potentially share price.

Key Dates

Keywords

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