Official announcements (8-K)

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn 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, …

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's wordsAppointment 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 …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOn September 10, 2026, the Company issued a press release announcing the third quarter cash dividend of $2.00 per share to all stockholders of record as of the close of business on September 30, 2026. The dividend will be paid to stockholders on October 15, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn 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 …

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

In the company's wordsOn June 11, 2026, Monolithic Power Systems, Inc. (the “Company”) held its 2026 annual meeting of stockholders (the “Annual Meeting”). At the Annual Meeting, the Company’s stockholders: 1.Elected two Class I directors to serve for three-year terms until the Company’s annual meeting of stockholders in 2029, or until their respective successors are duly elected and qualified. 2.Ratified the appointment of Ernst & Young LLP as the Company’s independent registered public accounting firm for the year ending December 31, 2026. 3.Approved, on an advisory basis, the 2025 compensation of the Company’s named executive officers. The number of votes cast for, against or withheld, as …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOn June 12, 2026, the Company issued a press release announcing the second quarter cash dividend of $2.00 per share to all stockholders of record as of the close of business on June 30, 2026. The dividend will be paid to stockholders on July 15, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn April 30, 2026, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended March 31, 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 …

Said earlier financial statements should no longer be relied on (Item 4.02)

The company said earlier financial statements can't be relied on, so past figures may change.

In the company's wordsOn February 26, 2026, the Audit Committee of the Board of Directors of Monolithic Power Systems, Inc. (the “Company”), after discussion with senior management, determined that the Company’s previously issued audited consolidated financial statements included in its annual report on Form 10-K for the fiscal year ended December 31, 2024, filed on March 3, 2025, and each of the Company’s previously issued unaudited condensed consolidated financial statements included in its quarterly reports on Form 10-Q for each of the quarterly periods in 2025 (each a “Previous Filing” and collectively “Previous Filings”), should no longer be relied upon due to the impact of an …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn February 5, 2026, Monolithic Power Systems, Inc. (the “Company”) issued a press release (the “Press Release”) regarding its financial results for the quarter and year ended December 31, 2025. The Press Release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. Attached hereto as Exhibit 99.2 and incorporated by reference herein is financial information and commentary regarding results of the quarter and year ended December 31, 2025. The information under Item 2.02 of this Current Report on Form 8-K and Exhibits 99.1 and 99.2 attached hereto are being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange …

Change in its leaders or board (Item 5.02)

New leaders or board members can bring a change in strategy.

In the company's words(b) Departure of Chief Financial Officer On February 3, 2026, Bernie Blegen informed the Company’s Board of Directors (the “Board”) of his intention to retire from his position as Executive Vice President and Chief Financial Officer. Mr. Blegen will continue in his role until the issuance of the Company’s 2025 annual report on Form 10-K (the “Effective Date”). Mr. Blegen will remain with the Company after his retirement to ensure a smooth transition with his eventual successor. (c) Appointment of Interim Chief Financial Officer On February 3, 2026, the Board appointed Rob Dean, the Company’s Corporate Controller, as interim Chief Financial Officer effective upon the …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsIncrease in Quarterly Dividend In the Press Release, the Company announced that its Board approved an increase in its quarterly cash dividend from $1.56 per share to $2.00 per share. The first quarter dividend of $2.00 per share will be paid on April 15, 2026 to all stockholders of record as of the close of business on March 31, 2026. A copy of the Press Release is attached hereto as Exhibit 99.1.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOn December 12, 2025, Monolithic Power Systems, Inc. issued a press release announcing the fourth quarter cash dividend of $1.56 per share to all stockholders of record as of the close of business on December 31, 2025. The dividend will be paid to stockholders on January 15, 2026. A copy of the press release is attached hereto as Exhibit 99.1.

Changed its company rules or financial year (Item 5.03)

Changes to the company's rules or the dates of its financial year.

In the company's wordsOn November 19, 2025, the Board of Directors (the “Board”) of Monolithic Power Systems, Inc. (the “Company”) adopted and approved the Company’s Amended and Restated Bylaws (the “Amended Bylaws”), effective immediately. The Amended Bylaws reduce the ownership threshold (the “Ownership Threshold”) necessary for stockholders to call a special meeting of stockholders from at least 30% to at least 25% of the outstanding shares of capital stock of the Company entitled to vote generally for the election of directors. In making this decision, the Board considered (i) the results of the Company’s 2025 annual meeting of stockholders, in which a non-binding stockholder proposal to …

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn October 30, 2025, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended September 30, 2025. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. Attached hereto as Exhibit 99.2 and incorporated by reference herein is financial information and commentary regarding results of the quarter ended September 30, 2025. The information under Item 2.02 of this Current Report on Form 8-K and Exhibits 99.1 and 99.2 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 …

Announced another event (Item 8.01)

Another event the company chose to report publicly.

In the company's wordsOn September 11, 2025, Monolithic Power Systems, Inc. issued a press release announcing the third quarter cash dividend of $1.56 per share to all stockholders of record as of the close of business on September 30, 2025. The dividend will be paid to stockholders on October 15, 2025. A copy of the press release is attached hereto as Exhibit 99.1.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

In the company's wordsOn July 31, 2025, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended June 30, 2025. The press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. Attached hereto as Exhibit 99.2 and incorporated by reference herein is financial information and commentary regarding results of the quarter ended June 30, 2025. The information under Item 2.02 of this Current Report on Form 8-K and Exhibits 99.1 and 99.2 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 …

Changed its company rules or financial year (Item 5.03)

Changes to the company's rules or the dates of its financial year.

Shared shareholder vote results (Item 5.07)

How shareholders voted on board members and proposals.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Changed its company rules or financial year (Item 5.03)

Changes to the company's rules or the dates of its financial year.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.

Shared financial results (Item 2.02)

New results: figures on this page will update when the full quarterly or annual report is filed.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Announced another event (Item 8.01)

Another event the company chose to report publicly.

Shared information with investors (Item 7.01)

Information shared with investors, often a presentation or press release.