MPWR: Financial results

Item 2.02 Results of Operations and Financial Condition. On July 30, 2026, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended June 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 9.01 Financial Statements and Exhibits. (d) Exhibits. Exhibit Description 99.1 Press release issued on Ju l y 30, 2026 for the quarter ended June 30 , 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL Document). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Date: July 30, 2026 By: /s/ Robert Dean Robert Dean Interim Chief Financial Officer