# EDGAR Filing Document

**Accession Number:** 0001329394
**File Stem:** 0001193125-26-246186
**Filing Date:** 2026-5
**Character Count:** 14859
**Document Hash:** 88ec94454c4d86ba39098584bcaa0643
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-246186.hdr.sgml**: 20260529

**ACCESSION NUMBER**: 0001193125-26-246186

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260529

**DATE AS OF CHANGE**: 20260529

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Silicon Motion Technology CORP
- **CENTRAL INDEX KEY:** 0001329394
- **STANDARD INDUSTRIAL CLASSIFICATION:** SEMICONDUCTORS & RELATED DEVICES [3674]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-51380
- **FILM NUMBER:** 261038855

**BUSINESS ADDRESS:**
- **STREET 1:** FLAT C, 19/F, WING CHEONG COMMERCIAL BLD
- **STREET 2:** NOS 19-25 JERVOIS STREET
- **CITY:** HONG KONG ISLAND
- **STATE:** K3
- **ZIP:** 000
- **BUSINESS PHONE:** 852 2307 4768

**MAIL ADDRESS:**
- **STREET 1:** FLAT C, 19/F, WING CHEONG COMMERCIAL BLD
- **STREET 2:** NOS 19-25 JERVOIS STREET
- **CITY:** HONG KONG ISLAND
- **STATE:** K3
- **ZIP:** 000

**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

**FORM SD** 

**Specialized Disclosure Report** 

## SILICON MOTION TECHNOLOGY CORPORATION
**(Exact name of registrant as specified in its charter)** 

---

| | | |
|:---|:---|:---|
| **Cayman Islands** | **000-51380** | **N/A** |
| **(State or other jurisdiction of**<br> **incorporation or organization)** | **(Commission**<br> **File Number)** | **(IRS Employer**<br> **Identification No.)** |

---

**Flat C, 19/F, Wing Cheong Commercial Building, Nos 19-25 Jervois Street, Hong Kong** 

**(Address of principal executive offices) (Zip code)** 

**Jason Tsai, Chief Financial Officer** 

**+852 2307 4768** 

**(Name and telephone number, including area code, of the person to contact in connection with this report.)** 

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

☒ Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025.

☐ Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended ____________.

------

**Section 1 - Conflict Minerals Disclosure** 

**Item 1.01 Conflict Minerals Disclosure and Report** 

***Conflict Minerals Disclosure***

Silicon Motion Technology Corporation (the "<u>Company</u>") has filed a Conflict Minerals Report for the year ended December 31, 2025, herewith as Exhibit 1.01, which is also publicly available on the Company's website at <u>www.siliconmotion.com</u>.\*

**Item 1.02 Exhibit** 

The Conflict Minerals Report required by Item 1.01 is filed as Exhibit 1.01 to this Form SD.

**Section 3—Exhibits** 

**Item 3.01 Exhibits** 

[Exhibit 1.01 Conflict Minerals Report as required by Items 1.01 and 1.02 of Form SD](d156214dex101.htm)

\* The reference to the Company's website is provided for convenience only, and its contents are not incorporated by reference into this Form SD and the Conflict Minerals Report nor deemed filed with the U.S. Securities and Exchange Commission.

------

**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 duly authorized undersigned.

---

| | | |
|:---|:---|:---|
| **SILICON MOTION TECHNOLOGY CORPORATION** | **SILICON MOTION TECHNOLOGY CORPORATION** | **SILICON MOTION TECHNOLOGY CORPORATION** |
| **By:** | **/s/ Jason Tsai** | **Dated: May 29, 2026** |
|  | **Jason Tsai** |  |
|  | **Chief Financial Officer** |  |

---

## Exhibit 1.01

**Exhibit 1.01** 

**Silicon Motion Technology Corporation** 

**Conflict Minerals Report** 

**For The Year Ended December 31, 2025** 

*Cautionary Note Concerning Forward-Looking Statements*: *This Conflict Minerals Report (this "<u>Report</u>") contains forward-looking statements within the meaning of federal securities laws. These forward-looking statements include statements concerning Silicon Motion Technology Corporation's ("<u>Silicon Motion</u>" or "<u>we</u>" or "<u>our</u>") objectives for its conflicts mineral policy and compliance initiatives and actions it intends to take relating to conflict minerals. Forward-looking statements involve substantial risks and uncertainties that could cause actual results to differ materially from currently anticipated results. When considering forward-looking statements, you should consider, among other factors, the risk factors described in the reports and other filings that Silicon Motion files with the United States Securities and Exchange Commission (the "<u>SEC</u>"), including Silicon Motion's Annual Report on Form 20-F for the year ended December 31, 2025, and its subsequent reports of quarterly financial information delivered on reports of foreign private issuer on Form 6-K. The risk factors and cautionary notes included in these filings are not exhaustive, and risks that are not identified therein could materially affect whether Silicon Motion realizes the results anticipated or implied by any forward-looking statements contained in this Report. Except as required by law, Silicon Motion disclaims any obligation to update these forward-looking statements, whether as a result of new information, future events, or otherwise.*

**Introduction** 

This Report for Silicon Motion covers the reporting period from January 1, 2025 to December 31, 2025 and is presented in accordance with Rule 13p-1 promulgated under the Securities Exchange Act of 1934, as amended ("<u>Rule 13p-1</u>"). This Report is filed as <u>Exhibit 1.01</u> to our Specialized Disclosure Report on Form SD (the "<u>Form SD</u>"). A copy of this Report and the Form SD are publicly available on our website at <u>http://www.siliconmotion.com</u>. The contents of any website referenced in this Report are not a part of this Report nor deemed filed with the SEC.

In 2010, the United States enacted the Dodd-Frank Wall Street Reform and Consumer Protection Act (the "<u>Act</u>"). Section 1502 of the Act relates to conflict minerals and requires companies subject to the Act to file a Form SD annually with the SEC to disclose whether the tungsten, tantalum, tin, and gold (referred to as "<u>3TG</u>") used in their products benefitted, directly or indirectly, armed groups in the Democratic Republic of the Congo and adjoining countries (collectively, the "<u>Covered Countries</u>"). This Report, which is an exhibit to our Form SD, describes the design and implementation of our conflict minerals due diligence measures that we have undertaken since 2013, including a description of how these measures were designed to determine, to our knowledge, the source mines, countries of origin, and processing facilities for 3TG contained in components used in our products.

**Our Background and Covered Products** 

Silicon Motion is the global leader in supplying NAND flash controllers for solid state storage devices. Silicon Motion is a world leading supplier of SSD controllers for servers, PCs and other client devices and is a leading merchant supplier of eMMC and UFS embedded storage controllers used in smartphones, IoT devices and other applications. We also supply customized high-performance and specialized enterprise, industrial and automotive SSD solutions. Our customers include most of the NAND flash vendors, storage device module makers and leading OEMs.

------

Our supply chain is complex, and multiple tiers exist between the mines from which 3TG are extracted and then, the incorporation into our products. We do not purchase raw ore or unrefined conflict minerals directly and make no purchases in the Covered Countries. As a result, and as described more fully below, we rely on our foundries and other suppliers to provide information on the origin of the 3TG contained in our products.

For all of our controllers, which are integrated circuits, and Ferri & Boot Drive solutions, which combine our controllers with NAND flash and other components, we have determined that one or more of the 3TG conflict minerals is necessary to the functionality or production of the controller or SSD solutions. As a result, all of our marketed controllers and SSD solutions are considered "covered products" for purposes of this Report.

**Reasonable Country of Origin Inquiry** 

In accordance with Rule 13p-1 and Form SD, Silicon Motion determined that conflict minerals are necessary to the functionality or production of our products and that conflict minerals are incorporated into our products during the manufacturing process. Accordingly, for the year ended December 31, 2025, we undertook a reasonable country of origin inquiry ("<u>RCOI</u>").

Silicon Motion's RCOI consisted principally of submitting to our suppliers the Conflict Minerals Reporting Template (the "<u>CMRT</u>") prepared by the Responsible Minerals Initiative (the "<u>RMI</u>"), a joint initiative of the Responsible Business Alliance (the "<u>RBA</u>") and Global e-Sustainability Initiative. We submitted the RMI CMRT to all of our contract manufacturers. We reviewed all responses for completeness, reasonableness, and consistency, and we followed up for corrections and clarifications as we determined appropriate.

Based on our RCOI, we were unable to conclusively determine that all of the 3TG used in our products did not originate in Covered Countries. As a result, we continued our analysis through due diligence described below.

**Our Due Diligence Process** 

Silicon Motion's due diligence measures were designed to conform, in all material respects, with the framework in the Organization for Economic Co-operation and Development ("<u>OECD</u>") Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas (the "<u>OECD Framework</u>"). The objectives of our diligence initiative were to determine, to the best of our ability, the source and chain of custody of the 3TG materials necessary for the functionality and/or production of our products; whether any such 3TG materials originated in the Covered Countries; and where such 3TG materials were determined to have originated in Covered Countries, and whether armed groups directly or indirectly benefitted from such 3TG materials.

Due diligence measures that we implemented included, but were not limited, to the following:

1. <u>Establishment of Internal Management Systems</u> 

a. *Conflict Minerals Policy*. Beginning in 2013, we adopted and communicated to our foundries and other
suppliers a written policy relating to the use of conflict minerals in our supply chain. A copy of our policy, our Conflict-Free Minerals Statement is publicly available at <u>https://www.siliconmotion.com/uploads/about/Conflict-Free-Minerals-Statement.pdf</u>.

b. *Internal Management to Support Supply Chain Due Diligence*. Silicon Motion has established an internal
compliance team with members from our operations, finance, and legal functions, and these individuals are charged with the development and implementation of our conflict minerals program.

c. *Controls and Transparency*. As described above, we undertook an RCOI with respect to conflict minerals in
our supply chain by providing the RMI template to each of our contract manufacturers to gather information about their use of 3TG, the smelters and refiners in their supply chain that are included in our products, and the countries of origin for 3TG
used in our products.

------

d. *Engagement*. We continue to engage actively with our contract manufacturers to strengthen our
relationship with them. We have communicated to our foundries and other suppliers our commitment to source 3TG in a manner that does not, directly or indirectly, benefit armed groups in the Covered Countries, and we have communicated that we will
consider alternative arrangements with other manufacturers or suppliers who are unable to cooperate in our due diligence efforts.

e. *Grievance Mechanism*. Silicon Motion's code of conduct and ethics includes procedures for reporting
violations of any Silicon Motion policy or legal requirement, and we provide mechanisms for anonymous reporting of such violations or concerns about the conduct of our business, including our implementation and enforcement of our Conflict-Free
Minerals Statement.

2. <u>Identification and Assessment of Risks in the Supply Chain</u> 

Because of our position within our supply chain, identifying actors upstream from our contract manufacturers is difficult. As discussed above, we identified our foundries and other suppliers and relied on them to provide the necessary information about the source of conflict minerals contained in the products that we contract to have manufactured. Similarly, our foundries and other suppliers rely on information provided by their suppliers to provide information regarding the country of origin of 3TG included in our products.

3. <u>Designing and Implementing a Strategy to Respond to Identified Risks</u> 

We have developed a formal risk management plan through which our conflict minerals program is implemented, managed, and monitored. During calendar years 2013-25 and continuing into the current year where foundries or other suppliers were unable to provide us with complete or reliable responses to the RMI CMRT, we considered these matters internally. To date, we have not identified any circumstances where we concluded that it was necessary to terminate any contract or relationship or find a replacement manufacturer or supplier as a result of conflict minerals matters.

4. <u>Carrying Out Independent Third-Party Audit of Supply Chain Due Diligence at Identified Points in the Supply Chain</u> 

We do not have a direct relationship with any smelters or refiners in our supply chain. As a result, we do not and cannot conduct direct audits. Instead, we support the development and implementation of independent third-party audits of smelters such as the RMI's Responsible Minerals Assurance Process ("<u>RMAP</u>") by encouraging our foundries and other suppliers to purchase materials from audited smelters that have been validated as conflict-free under the RMAP.

5. <u>Reporting on Supply Chain Due Diligence</u> 

In May 2026, we publicly filed the Form SD and this Report with the SEC. A copy of this Report and the Form SD are publicly available at www.siliconmotion.com. This Report includes information about the RCOI methodology utilized by Silicon Motion, the design of our due diligence process in conformance with the OECD Framework and a description of our products that incorporate conflict minerals necessary to the functionality or production of such products.