Exhibit 99.1

Silicon Motion Announces Results for the Period Ended March 31, 2025

NEWS RELEASE

Business Highlights

Financial Highlights

TAIPEI, Taiwan and MILPITAS, Calif., April 30, 2025 – Silicon Motion Technology Corporation (NasdaqGS: SIMO) (“Silicon Motion,” the “Company” or “we”) today announced its financial results for the quarter ended March 31, 2025. For the first quarter of 2025, net sales (GAAP) decreased sequentially to $166.5 million from $191.2 million in the fourth quarter of 2024. Net income (GAAP) decreased to $19.5 million, or $0.58 per diluted American depositary share (“ADS”) (GAAP), from net income (GAAP) of $21.6 million, or $0.64 per diluted ADS (GAAP), in the fourth quarter of 2024.

For the first quarter of 2025, net income (non-GAAP) decreased to $20.3 million, or $0.60 per diluted ADS (non-GAAP), from net income (non-GAAP) of $29.4 million, or $0.87 per diluted ADS (non-GAAP), in the fourth quarter of 2024.

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

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First Quarter of 2025 Review

“Despite the challenging macro environment in the first quarter of 2025, we executed our plan and delivered quarterly revenue at the high end of our guided range and delivered another quarter of gross margin expansion,” stated Wallace Kou, President and CEO of Silicon Motion. “Our industry leading PCIe Gen 5 controller experienced stronger than expected demand during the quarter, partially driven by growing AI inference demands from white box server makers leveraging more mainstream hardware components. Our eMMC and UFS controllers also experienced better than expected demand given a rebound in the smartphone market and our ongoing market share gains. While the near-term remains challenging given the broader economic challenges associated with tariffs and potential trade wars, we remain focused on delivering strong, sustainable long-term growth through product diversification; expanding into new markets; and growing market share across our portfolio of consumer, enterprise, automotive, industrial and storage solutions.”

Key Financial Results

Other Financial Information

During the first quarter of 2025, we had $11.7 million of capital expenditures, including $7.0 million for the routine purchases of testing equipment, software, design tools and other items, and $4.7 million for building construction in Hsinchu, Taiwan.

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Returning Value to Shareholders

On February 6, 2025, we announced that our Board of Directors had authorized a new program for the Company to repurchase up to $50 million of our ADSs over a six-month period. In the first quarter of 2025, we repurchased $24.3 million of our ADSs at an average price of $56.96 per ADS.

Business Outlook

“We are rapidly expanding our market opportunities as we invest in new products and enter new markets, which we anticipate will drive improved revenue and profitability for many years to come. In 2025, we expect to benefit from the introduction of several new products, including our 8-channel PCIE Gen 5 controller, our 4-channel PCIe Gen 5 controller targeting the mass market that will be introduced in late 2025, our higher-end UFS 4.1 and new low-cost UFS 2.2 controllers that will ramp in the second half of 2025. We introduced our first MonTitan enterprise/AI-class products at the end of 2024, and we expect these to ramp-up production with our first customers in the second half of 2025. Additionally, we continue to expand our automotive product portfolio and our market share across multiple applications. While the near-term environment remains challenging given the macro environment, including the potential impact of tariffs and potential trade wars, we continue to believe we will see a strong rebound in the consumer markets in the second half of 2025, enhanced by our new product introductions, and we continue to target a revenue run rate of $1 billion as we exit the year.”

For the second 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 April 30, 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/BI5c69a4c2d96041b59a2bf8a51cec1881

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 selected financial results calculated in accordance with U.S. Generally Accepted Accounting Principles (“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 Sheet

(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 Exchange Act. 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, 2024. 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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