UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

April 29, 2024

Commission File Number: 000-51380

Silicon Motion Technology Corporation

(Exact name of Registrant as specified in its charter)

Flat C, 19/F, Wing Cheong Commercial Building

Nos 19-25 Jervois Street

Hong Kong

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒    Form 40-F ☐

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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.

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Exhibit 99.1

Silicon Motion Confirms Quarterly Dividend

TAIPEI, Taiwan and MILPITAS, Calif., April 29, 2024 –Silicon Motion Technology Corporation (NasdaqGS: SIMO)(“Silicon Motion” or the “Company”), a global leader in designing and marketing NAND flash controllers for solid state storage devices, confirms today its quarterly cash dividend.

On October 30, 2023, the Board of Directors of the Company declared payment of an annual dividend of US$2.00 per ADS¹, equivalent to US$0.50 per ordinary share, which will be paid in four quarterly installments of $0.50 per ADS, equivalent to US$0.125 per ordinary share. According to the previously announced record and payment dates, the next quarterly installment will be paid on May 23, 2024 to all shareholders of record on May 9, 2024. Our depository bank’s DR Books will be closed for issuance and cancellation on May 9, 2024.

The declaration and payment of future cash dividends are subject to the Board’s continuing determination that the payment of dividends is in the best interests of the Company’s shareholders and are in compliance with all laws and agreements of the Company applicable to the declaration and payment of cash dividends.

ABOUT SILICON MOTION:

We are the global leader in supplying NAND flash controllers for solid state storage devices. We supply more SSD controllers than any other company in the world for servers, PCs and other client devices and are the leading merchant supplier of eMMC and UFS embedded storage controllers used in smartphones, IoT devices and other applications. We also supply customized high-performance hyperscale data center and specialized industrial and automotive SSD solutions. Our customers include most of the NAND flash vendors, storage device module makers and leading OEMs. For further information on Silicon Motion, visit us at www.siliconmotion.com.

FORWARD-LOOKING STATEMENTS:

This press release contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. In some cases, you can identify forward-looking statements by terminology such as “may,” “will,” “should,” “expect,” “intend,” “plan,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue,” or the negative of these terms or other comparable terminology. Although such statements are based on our own information and information from other sources we believe to be reliable, you should not place undue reliance on them. These statements involve risks and uncertainties, and actual

market trends or our actual results of operations, financial condition or business prospects may differ materially from those expressed or implied in these forward-looking statements for a variety of reasons. Potential risks and uncertainties include, but are not limited to the unpredictable volume and timing of customer orders, which are not fixed by contract but vary on a purchase order basis; the loss of one or more key customers or the significant reduction, postponement, rescheduling or cancellation of orders from one or more customers; general economic conditions or conditions in the semiconductor or consumer electronics markets; the impact of inflation on our business and customer’s businesses and any effect this has on economic activity in the markets in which we operate; the effects on our business and our customer’s business taking into account the ongoing US-China tariffs and trade disputes the uncertainties associated with any future outbreaks of COVID-19, including, but not limited to, the emergence of variants to the original COVID-19 strain or other similar global or regional pandemic; the continuing tensions between Taiwan and China including enhanced military activities; decreases in the overall average selling prices of our products; changes in the relative sales mix of our products; changes in our cost of finished goods; supply chain disruptions that have affected us and our industry as well as other industries on a global basis; the payment, or non-payment, of cash dividends in the future at the discretion of our board of directors and any announced planned increases in such dividends; changes in our cost of finished goods; the availability, pricing, and timeliness of delivery of other components and raw materials used in the products we sell given the current raw material supply shortages being experienced in our industry; our customers’ sales outlook, purchasing patterns, and inventory adjustments based on consumer demands and general economic conditions; any potential impairment charges that may be incurred related to businesses previously acquired or divested in the future; our ability to successfully develop, introduce, and sell new or enhanced products in a timely manner; and the timing of new product announcements or introductions by us or by our competitors. For additional discussion of these risks and uncertainties and other factors, please see the documents we file from time to time with the U.S. Securities and Exchange Commission, including our Annual Report on Form 20-F filed with the U.S. Securities and Exchange Commission on April 28, 2023. Other than as required under the securities laws, we do not intend, and do not undertake any obligation to, update or revise any forward-looking statements, which apply only as of the date of this press release.

Media Contact:

Minnie Lin

Director of Marketing Communication Department

E-mail: minnie.lin@siliconmotion.com