Form 8-K

8-K — MONOLITHIC POWER SYSTEMS INC

Accession: 0001628280-26-042820

Filed: 2026-06-12

Period: 2026-06-11

CIK: 0001280452

SIC: 3674 (SEMICONDUCTORS & RELATED DEVICES)

Item: Submission of Matters to a Vote of Security Holders

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — mpwr-20260611.htm (Primary)

EX-99.1 (mpwr-ex991x06112026.htm)

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8-K

8-K (Primary)

Filename: mpwr-20260611.htm · Sequence: 1

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

the Securities Exchange Act of 1934

Date of Report (date of earliest event reported):

June 11, 2026

MONOLITHIC POWER SYSTEMS, INC.

(Exact name of registrant as specified in its charter)

Delaware 000-51026 77-0466789

(State or other jurisdiction of (Commission (I.R.S. Employer

incorporation or organization) File Number) Identification Number)

1555 Palm Beach Lakes Blvd.,

West Palm Beach, Florida 33401

(Address of principal executive offices)(Zip Code)(1)

(561) 839-3999

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $0.001 per share MPWR The NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as deﬁned in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

(1)We have operations in multiple locations in the U.S., Europe and Asia and have not identified a single location as the Company’s headquarters. We are including this address to comply with the Securities and Exchange Commission’s requirements.

Item 5.07 Submission of Matters to a Vote of Security Holders.

On 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 well as the number of abstentions and broker non-votes as to each such matter, is set forth below.

1.Election of two Class I directors:

Nominee For Withheld Broker Non-Votes

Victor K. Lee 39,298,042 4,440,848 1,699,761

Jeff Zhou 41,135,949 2,602,941 1,699,761

2.Ratification of the appointment of the Company's independent registered public accounting firm for the year ending December 31, 2026:

For Against Abstain Broker Non-Votes

45,354,955 72,479 11,217 -

3.Approval, on an advisory basis, of the 2025 compensation of the Company's named executive officers:

For Against Abstain Broker Non-Votes

42,164,328 1,411,084 163,478 1,699,761

Item 8.01 Other Events.

On 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.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Description

99.1

Press release issued on June 12, 2026.

104 Cover Page Interactive Data File (embedded within the Inline XBRL Document).

SIGNATURE

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: June 12, 2026 By: /s/ Saria Tseng

Saria Tseng

Executive Vice President, General Counsel

EX-99.1

Filename: mpwr-ex991x06112026.htm · Sequence: 2

Document

Exhibit 99.1

Monolithic Power Systems Announces Second Quarter 2026 Dividend

Schaffhausen, Switzerland, June 12, 2026 -- Monolithic Power Systems, Inc. (“MPS”) (Nasdaq: MPWR), a global company that provides high-performance, semiconductor-based power electronics solutions, announced today its second quarter dividend of $2.00 per common share to all stockholders of record as of the close of business on June 30, 2026. The dividend will be paid on July 15, 2026.

Safe Harbor Statement

This news release includes “forward-looking statements” intended to qualify for the safe harbor from liability established by the Private Securities Litigation Reform Act of 1995. These forward-looking statements are based on our current expectations, estimates and projections about our business and industry, management’s beliefs, and certain assumptions made by us, all of which are subject to change. Forward-looking statements can often be identified by words such as “anticipates,” “expects,” “forecasts,” “intends,” “believes,” “plans,” “may,” “will,” or “continue,” and similar expressions and variations or negatives of these words. All such statements are subject to certain risks, assumptions and uncertainties, including those described in our most recent Annual Report on Form 10-K and Quarterly Reports on Form 10-Qs, and in other documents that we file or furnish with the Securities and Exchange Commission. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially and adversely from those projected, and may affect our future operating results, financial position and cash flows. Accordingly, you are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date they are made. Except to the extent required by law, MPS does not undertake, and expressly disclaims, any duty or obligation to update publicly any forward-looking statement after the initial distribution of this release, whether as a result of new information, future events, changes in assumptions or otherwise.

About Monolithic Power Systems

Monolithic Power Systems, Inc. (“MPS”) is a fabless global company that provides high-performance, semiconductor-based power electronics solutions. MPS’s mission is to reduce energy and material consumption to improve all aspects of quality of life and create a sustainable future. Founded in 1997 by our CEO Michael Hsing, MPS has three core strengths: deep system-level knowledge, strong semiconductor design expertise, and innovative proprietary technologies in the areas of semiconductor processes, system integration, and packaging. These combined advantages enable MPS to deliver reliable, compact, and monolithic solutions that are highly energy-efficient, cost-effective, and environmentally responsible while providing a consistent return on investment to our stockholders. MPS can be contacted through its website at www.monolithicpower.com or its support offices around the world.

###

Monolithic Power Systems, MPS, and the MPS logo are registered trademarks of Monolithic Power Systems, Inc. in the U.S. and trademarked in certain other countries.

Contact:

Tony Balow

Vice President, Finance

Monolithic Power Systems, Inc.

MPSInvestor.Relations@monolithicpower.com

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