MPWR: Financial results · Leadership change

Item 2.02 Results of Operations and Financial Condition. On October 29, 2026, Monolithic Power Systems, Inc. (the “Company”) issued a press release regarding its financial results for the quarter ended September 30, 2026. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. The information under Item 2.02 of this Current Report on Form 8-K and Exhibit 99.1 attached hereto are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “1934 Act”), nor shall they be deemed incorporated by reference in any filing with the Securities and Exchange Commission under the 1934 Act or the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing. Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. Appointment of Chief Financial Officer On October 27, 2026, the Board of Directors of the Company (“the Board”) appointed Tony Balow, age 56, as Vice President, Chief Financial Officer, effective immediately. Mr. Balow served as the Company’s Vice President of Finance from September 2023 to October 2026. Prior to joining the Company, Mr. Balow spent 23 years at Intel, a global semiconductor company, and held a number of senior positions. Mr. Balow holds a Bachelor of Science and a Master of Science in Aerospace, Aeronautical and Astronautical Engineering from the University of Illinois Urbana-Champaign, and a Master of Business Administration from the University of Arizona. There are no arrangements or understandings between Mr. Balow and any other person pursuant to which he was appointed as the Company’s Chief Financi