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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):
October 27, 2022

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)
5808 Lake Washington Blvd. NE, Kirkland, Washington 98033

(Address of principal executive offices) (Zip Code)
(425) 296-9956
(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. ☐

Item 2.02 Results of Operations and Financial Condition.
On October 27, 2022, Monolithic Power Systems, Inc. issued a press release regarding its financial results for the quarter ended September 30, 2022, and hosted a webinar covering its financial results. Both the press release and the webinar presentation are attached hereto as exhibits and are incorporated by reference herein.
The information under Item 2.02 of this Current Report on Form 8-K and the exhibits 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 October 27, 2022.
99.2 |  | Webinar presentation dated October 27, 2022.
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: October 27, 2022 | By: | /s/ T. Bernie Blegen |
|  | T. Bernie Blegen |
|  | Chief Financial Officer |