Exhibit 99.1

		Silicon Motion Announces Results for the Period Ended September 30, 2025

NEWS RELEASE

Business Highlights

Financial Highlights

TAIPEI, Taiwan and MILPITAS, Calif., October 31, 2025 – Silicon Motion Technology Corporation (NasdaqGS: SIMO) (“Silicon Motion,” the “Company,” “we” or similar terms) today announced its financial results for the quarter ended September 30, 2025. For the third quarter of 2025, net sales (GAAP) increased sequentially to $242.0 million from $198.7 million in the second quarter of 2025. Net income (GAAP) also increased sequentially to $39.1 million, or $1.16 per diluted American depositary share (“ADS”) (GAAP), from net income (GAAP) of $16.3 million, or $0.49 per diluted ADS (GAAP), in the second quarter of 2025.

For the third quarter of 2025, net income (non-GAAP) increased sequentially to $33.8 million, or $1.00 per diluted ADS (non-GAAP), from net income (non-GAAP) of $23.0 million, or $0.69 per diluted ADS (non-GAAP), in the second quarter of 2025.

All financial numbers are in U.S. dollars unless otherwise noted.

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Third Quarter of 2025 Review

“We experienced better than projected strength across each of our markets in the third quarter of 2025 and delivered revenue well above our previously provided range,” stated Wallace Kou, President and CEO of Silicon Motion. “Our eMMC and UFS products experienced strong growth during the third quarter, primarily driven by a rebounding smartphone market coupled with market share gains. We also experienced continued growth in our automotive segment primarily driven by increased product diversification and new customer ramps. Our leading PCIe5 client SSD controller sales grew 45% quarter-over-quarter as AI-at-the-edge PCs are gaining traction and as white box AI server makers continue to leverage mainstream hardware components. The investments we have made over the past few years are taking root as we are starting to benefit from increased product and market diversification. We believe we are well positioned to achieve long-term, sustainable growth given our expanding product portfolio of leading consumer, enterprise, automotive and industrial storage solutions.”

Key Financial Results

Other Financial Information

During the third quarter of 2025, we had $20.1 million of capital expenditures, including $9.9 million for the routine purchases of testing equipment, software, design tools and other items, and $10.2 million for building improvements and furniture for our office building in Hsinchu, Taiwan.

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Returning Value to Shareholders

On October 28, 2024, our Board of Directors declared a $2.00 per ADS annual cash dividend to be paid in quarterly installments of $0.50 per ADS. On August 21, 2025, we paid $16.7 million to Silicon Motion shareholders as the fourth installment of the annual cash dividend. On October 27, 2025, our Board of Directors declared a $2.00 per ADS annual dividend to be paid in quarterly installments of $0.50 per ADS. The first installment of our new annual dividend will be paid on November 26, 2025.

Business Outlook

“Our efforts in product and market diversification are yielding results on both the top and bottom lines. We introduced several new products in 2025 in client SSDs, portable SSDs, eMMC/UFS, enterprise, automotive and expandable cards that will ramp and scale in 2026, driving higher share across our markets and benefiting from higher ASPs and strong margins. We expect continued top and bottom line growth in the current quarter, exceeding our previously announced full-year revenue run rate target of $1 billion exiting the quarter, and look forward to capitalizing on these new products and further expanding our product portfolio and target markets next year,” stated Mr. Kou.

For the fourth quarter of 2025, management expects:

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Conference Call & Webcast:

The Company’s management team will conduct a conference call at 8:00 am Eastern Time on October 31, 2025.

Conference Call Details

Participants must register in advance to join the conference call using the link provided below. Conference access information (including dial-in information and a unique access PIN) will be provided in the email received upon registration.

Participant Online Registration:

https://register-conf.media-server.com/register/BI5a424c717da840efac90cdf19c8ac036

A webcast of the call will be available on the Company’s website at www.siliconmotion.com.

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Discussion of Non-GAAP Financial Measures

To supplement the Company’s unaudited consolidated financial results calculated in accordance with GAAP, the Company discloses certain non-GAAP financial measures that exclude stock-based compensation and other items, including gross profit (non-GAAP), gross margin (non-GAAP), operating expenses (non-GAAP), operating profit (non-GAAP), operating margin (non-GAAP), non-operating income (expense) (non-GAAP), net income (non-GAAP), and earnings per diluted ADS (non-GAAP). These non-GAAP measures are not in accordance with or an alternative to GAAP and may be different from similarly-titled non-GAAP measures used by other companies. We believe that these non-GAAP measures have limitations in that they do not reflect all the amounts associated with the Company’s results of operations as determined in accordance with GAAP and that these measures should only be used to evaluate the Company’s results of operations in conjunction with the corresponding GAAP measures. The presentation of this additional information is not meant to be considered in isolation or as a substitute for the most directly comparable GAAP measure. We compensate for the limitations of our non-GAAP financial measures by relying upon GAAP results to gain a complete picture of our performance.

Our non-GAAP financial measures are provided to enhance the user’s overall understanding of our current financial performance and our prospects for the future. Specifically, we believe the non-GAAP results provide useful information to both management and investors as these non-GAAP results exclude certain expenses, gains and losses that we believe are not indicative of our core operating results and because they are consistent with the financial models and estimates published by many analysts who follow the Company. We use non-GAAP measures to evaluate the operating performance of our business, for comparison with our forecasts, and for benchmarking our performance externally against our competitors. Also, when evaluating potential acquisitions, we exclude the items described below from our consideration of the target’s performance and valuation. Since we find these measures to be useful, we believe that our investors benefit from seeing the results from management’s perspective in addition to seeing our GAAP results. We believe that these non-GAAP measures, when read in conjunction with the Company’s GAAP financials, provide useful information to investors by offering:

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The following are explanations of each of the adjustments that we incorporate into our non-GAAP measures, as well as the reasons for excluding each of these individual items in our reconciliation of these non-GAAP financial measures:

Stock-based compensation expense consists of non-cash charges related to the fair value of restricted stock units awarded to employees. The Company believes that the exclusion of these non-cash charges provides for more accurate comparisons of our operating results to our peer companies due to the varying available valuation methodologies, subjective assumptions and the variety of award types. In addition, the Company believes it is useful to investors to understand the specific impact of share-based compensation on its operating results.

Restructuring charges relate to the restructuring of our underperforming product lines, principally the write-down of NAND flash, embedded DRAM and SSD inventory valuation and severance payments.

Dispute related expenses consist of legal, consultant, other fees and resolution related to the dispute.

Foreign exchange loss (gain) consists of translation gains and/or losses of non-US$ denominated current assets and current liabilities, as well as certain other balance sheet items, which result from the appreciation or depreciation of non-US$ currencies against the US$. We do not use financial instruments to manage the impact on our operations from changes in foreign exchange rates, and because our operations are subject to fluctuations in foreign exchange rates, we therefore exclude foreign exchange gains and losses when presenting non-GAAP financial measures.

Realized/Unrealized loss (gain) on investments relates to the disposal and net change in fair value of long-term investments.

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Silicon Motion Technology Corporation

Consolidated Statements of Income

(in thousands, except percentages and per ADS data, unaudited)

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Silicon Motion Technology Corporation

Reconciliation of GAAP to Non-GAAP Operating Results

(in thousands, except percentages and per ADS data, unaudited)

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Silicon Motion Technology Corporation

Consolidated Balance Sheets

(In thousands, unaudited)

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Silicon Motion Technology Corporation

Condensed Consolidated Statements of Cash Flows

(in thousands, unaudited)

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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 news 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 functionalities and performance of our information technology (“IT”) systems, which are subject to cybersecurity threats and which support our critical operational activities, and any breaches of our IT systems or those of our customers, suppliers, partners and providers of third-party licensed technology; the effects on our business and our customer’s business taking into account the ongoing U.S.-China tariffs and trade disputes; the uncertainties associated with any future 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.

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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 30, 2025. 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 news release.

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