MPWR · Frank Anthony Balow III, the newly appointed Chief Financial Officer of…

Frank Anthony Balow III, the newly appointed Chief Financial Officer of Monolithic Power Systems, filed a Form 3 initial statement of beneficial ownership, reporting 2,941 shares of common stock held directly, including 1,206 unvested restricted stock units. This is a routine insider filing triggered by his appointment and contains no trading activity or material financial information.

• Frank Anthony Balow III filed Form 3 as a new reporting person (Chief Financial Officer) of Monolithic Power Systems.
• Balow directly owns 2,941 shares of MPWR common stock, including 1,206 unvested restricted stock units.
• The restricted stock units vest in tranches from November 2026 through February 2030, subject to continued employment.
• The filing is dated as of October 27, 2026, and was filed with the SEC on October 29, 2026.