Silicon Motion Technology CORP SEC filings SIMO
Silicon Motion Technology CORP has 455 filings in SEC EDGAR's recent list, going back to Jun 9, 2005. Its latest annual report, Form 20-F, was filed on Apr 30, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Oct 29, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2026 | — |
| 6-K | Current report (foreign issuer) | Oct 29, 2026 | Oct 29, 2026 |
| 6-K | Current report (foreign issuer) | Oct 16, 2026 | Oct 16, 2026 |
| 6-K | Current report (foreign issuer) | Oct 8, 2026 | Oct 8, 2026 |
| 6-K | Current report (foreign issuer) | Sep 22, 2026 | Sep 22, 2026 |
| 6-K | Current report (foreign issuer) | Aug 14, 2026 | Aug 13, 2026 |
| 6-K | Current report (foreign issuer) | Aug 11, 2026 | Aug 10, 2026 |
| 6-K | Current report (foreign issuer) | Aug 10, 2026 | Aug 10, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2026 | — |
| 6-K | Current report (foreign issuer) | Jul 30, 2026 | Jul 30, 2026 |
| 6-K | Current report (foreign issuer) | Jul 24, 2026 | Jul 24, 2026 |
| 6-K | Current report (foreign issuer) | Jul 8, 2026 | Jul 8, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 24, 2026 | Jun 17, 2026 |
| 144 | Notice of proposed sale | Jun 4, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 144 | Notice of proposed sale | May 27, 2026 | — |
| 144 | Notice of proposed sale | May 27, 2026 | — |
| 144 | Notice of proposed sale | May 18, 2026 | — |
| 4 | Insider transaction | May 7, 2026 | May 6, 2026 |
| 144 | Notice of proposed sale | May 1, 2026 | — |
| 20-F | Annual report (foreign issuer) | Apr 30, 2026 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Apr 29, 2026 | Apr 29, 2026 |
| 6-K | Current report (foreign issuer) | Apr 24, 2026 | Apr 24, 2026 |
| 6-K | Current report (foreign issuer) | Apr 10, 2026 | Apr 10, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Apr 9, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 30, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 27, 2026 | Mar 18, 2026 |
| 144 | Notice of proposed sale | Feb 24, 2026 | — |
| 6-K | Current report (foreign issuer) | Feb 4, 2026 | Feb 4, 2026 |
| 6-K | Current report (foreign issuer) | Feb 2, 2026 | Feb 2, 2026 |
| 6-K | Current report (foreign issuer) | Jan 9, 2026 | Jan 9, 2026 |
| 144 | Notice of proposed sale | Dec 9, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 5, 2025 | — |
| 144 | Notice of proposed sale | Nov 10, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 5, 2025 | — |
| 6-K | Current report (foreign issuer) | Oct 31, 2025 | Oct 31, 2025 |
| 6-K | Current report (foreign issuer) | Oct 27, 2025 | Oct 27, 2025 |
| 6-K | Current report (foreign issuer) | Oct 8, 2025 | Oct 8, 2025 |
| 144 | Notice of proposed sale | Sep 16, 2025 | — |
| 144 | Notice of proposed sale | Sep 9, 2025 | — |
| 144 | Notice of proposed sale | Aug 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 6, 2025 | — |
| 6-K | Current report (foreign issuer) | Jul 31, 2025 | Jul 31, 2025 |
| 6-K | Current report (foreign issuer) | Jul 28, 2025 | Jul 28, 2025 |
| 6-K | Current report (foreign issuer) | Jul 8, 2025 | Jul 8, 2025 |
| 6-K | Current report (foreign issuer) | Jul 1, 2025 | Jul 1, 2025 |
| 144 | Notice of proposed sale | Jun 25, 2025 | — |
| S-8 | Employee stock plan registration | Jun 4, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 144 | Notice of proposed sale | May 12, 2025 | — |
| 20-F | Annual report (foreign issuer) | Apr 30, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 30, 2025 |
| 6-K | Current report (foreign issuer) | Apr 25, 2025 | Apr 25, 2025 |
| 6-K | Current report (foreign issuer) | Apr 9, 2025 | Apr 9, 2025 |
| 6-K | Current report (foreign issuer) | Feb 6, 2025 | Feb 6, 2025 |
| 6-K | Current report (foreign issuer) | Feb 6, 2025 | Feb 6, 2025 |
| 6-K | Current report (foreign issuer) | Jan 24, 2025 | Jan 24, 2025 |
| 6-K | Current report (foreign issuer) | Jan 7, 2025 | Jan 7, 2025 |
| 144 | Notice of proposed sale | Dec 18, 2024 | — |
| 144 | Notice of proposed sale | Dec 3, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 12, 2024 | — |
| 6-K | Current report (foreign issuer) | Oct 31, 2024 | Oct 31, 2024 |
| 6-K | Current report (foreign issuer) | Oct 28, 2024 | Oct 28, 2024 |
| 6-K | Current report (foreign issuer) | Oct 8, 2024 | Oct 8, 2024 |
| 6-K | Current report (foreign issuer) | Sep 9, 2024 | Sep 9, 2024 |
| 6-K | Current report (foreign issuer) | Aug 2, 2024 | Aug 1, 2024 |
| 6-K | Current report (foreign issuer) | Jul 29, 2024 | Jul 29, 2024 |
| 6-K | Current report (foreign issuer) | Jul 8, 2024 | Jul 8, 2024 |
| 144 | Notice of proposed sale | Jun 21, 2024 | — |
| 144 | Notice of proposed sale | Jun 7, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| 144 | Notice of proposed sale | May 13, 2024 | — |
| 144 | Notice of proposed sale | May 10, 2024 | — |
| 144 | Notice of proposed sale | May 8, 2024 | — |
| 6-K | Current report (foreign issuer) | May 3, 2024 | May 3, 2024 |
| 20-F | Annual report (foreign issuer) | Apr 30, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Apr 29, 2024 | Apr 29, 2024 |
| 6-K | Current report (foreign issuer) | Apr 25, 2024 | Apr 25, 2024 |
| 6-K | Current report (foreign issuer) | Apr 9, 2024 | Apr 9, 2024 |
| 144 | Notice of proposed sale | Mar 4, 2024 | — |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| 144 | Notice of proposed sale | Feb 13, 2024 | — |
| 6-K | Current report (foreign issuer) | Feb 7, 2024 | Feb 7, 2024 |
| 6-K | Current report (foreign issuer) | Feb 5, 2024 | Feb 5, 2024 |
| 6-K | Current report (foreign issuer) | Jan 5, 2024 | Jan 5, 2024 |
| 144 | Notice of proposed sale | Dec 20, 2023 | — |
| 6-K | Current report (foreign issuer) | Dec 18, 2023 | Dec 18, 2023 |
| 6-K | Current report (foreign issuer) | Dec 12, 2023 | Dec 11, 2023 |
| 6-K | Current report (foreign issuer) | Nov 2, 2023 | Nov 1, 2023 |
| 6-K | Current report (foreign issuer) | Oct 31, 2023 | Oct 30, 2023 |
| 6-K | Current report (foreign issuer) | Oct 6, 2023 | Oct 6, 2023 |
| 6-K | Current report (foreign issuer) | Oct 5, 2023 | Oct 5, 2023 |
| 6-K | Current report (foreign issuer) | Sep 21, 2023 | Sep 21, 2023 |
| 144 | Notice of proposed sale | Sep 15, 2023 | — |
| 144 | Notice of proposed sale | Sep 13, 2023 | — |
| 6-K | Current report (foreign issuer) | Aug 17, 2023 | Aug 16, 2023 |
| 6-K | Current report (foreign issuer) | Aug 7, 2023 | Aug 7, 2023 |
| 6-K | Current report (foreign issuer) | Jul 28, 2023 | Jul 28, 2023 |
| 6-K | Current report (foreign issuer) | Jul 27, 2023 | Jul 27, 2023 |
| 6-K | Current report (foreign issuer) | Jul 7, 2023 | Jul 6, 2023 |
| 425 | Filing | Jun 28, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 28, 2023 | Jun 28, 2023 |
| 425 | Filing | Jun 7, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 6-K | Current report (foreign issuer) | May 5, 2023 | May 5, 2023 |
| 20-F | Annual report (foreign issuer) | Apr 28, 2023 | Dec 31, 2022 |
| 425 | Filing | Apr 27, 2023 | — |
| 6-K | Current report (foreign issuer) | Apr 7, 2023 | Apr 7, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 8, 2023 | Feb 8, 2023 |
| 425 | Filing | Feb 2, 2023 | — |
| 425 | Filing | Jan 11, 2023 | — |
| 6-K | Current report (foreign issuer) | Jan 5, 2023 | Jan 5, 2023 |
| 425 | Filing | Dec 1, 2022 | — |
| 425 | Filing | Dec 1, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 2, 2022 | Nov 2, 2022 |
| 425 | Filing | Oct 26, 2022 | — |
| 6-K | Current report (foreign issuer) | Oct 7, 2022 | Oct 6, 2022 |
| 425 | Filing | Sep 9, 2022 | — |
| 425 | Filing | Sep 1, 2022 | — |
| 6-K | Current report (foreign issuer) | Sep 1, 2022 | Aug 31, 2022 |
| 425 | Filing | Aug 31, 2022 | — |
| 425 | Filing | Aug 31, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 31, 2022 | Aug 31, 2022 |
| 425 | Filing | Aug 10, 2022 | — |
| 425 | Filing | Jul 28, 2022 | — |
| 6-K | Current report (foreign issuer) | Jul 28, 2022 | Jul 28, 2022 |
| 6-K | Current report (foreign issuer) | Jul 26, 2022 | Jul 25, 2022 |
| 6-K | Current report (foreign issuer) | Jul 19, 2022 | Jul 19, 2022 |
| 6-K | Current report (foreign issuer) | Jul 13, 2022 | Jul 13, 2022 |
| 6-K | Current report (foreign issuer) | Jul 7, 2022 | Jul 7, 2022 |
| 6-K | Current report (foreign issuer) | Jun 28, 2022 | Jun 28, 2022 |
| 425 | Filing | Jun 28, 2022 | — |
| 425 | Filing | Jun 21, 2022 | — |
| 425 | Filing | Jun 8, 2022 | — |
| 425 | Filing | Jun 7, 2022 | — |
| SD | Specialized disclosure (conflict minerals) | May 27, 2022 | — |
| 6-K | Current report (foreign issuer) | May 6, 2022 | May 5, 2022 |
| 425 | Filing | May 6, 2022 | — |
| 425 | Filing | May 5, 2022 | — |
| 6-K | Current report (foreign issuer) | May 5, 2022 | May 5, 2022 |
| 425 | Filing | May 5, 2022 | — |
| 6-K | Current report (foreign issuer) | May 3, 2022 | May 3, 2022 |
| 20-F | Annual report (foreign issuer) | Apr 25, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Apr 12, 2022 | Apr 8, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| 6-K | Current report (foreign issuer) | Jan 27, 2022 | Jan 27, 2022 |
| 6-K | Current report (foreign issuer) | Jan 25, 2022 | Jan 24, 2022 |
| 6-K | Current report (foreign issuer) | Jan 10, 2022 | Jan 7, 2022 |
| 6-K | Current report (foreign issuer) | Dec 7, 2021 | Dec 7, 2021 |
| 6-K | Current report (foreign issuer) | Oct 28, 2021 | Oct 28, 2021 |
| 6-K | Current report (foreign issuer) | Oct 26, 2021 | Oct 25, 2021 |
| 6-K | Current report (foreign issuer) | Oct 8, 2021 | Oct 7, 2021 |
| 6-K | Current report (foreign issuer) | Jul 30, 2021 | Jul 30, 2021 |
| 6-K | Current report (foreign issuer) | Jul 27, 2021 | Jul 26, 2021 |
| 6-K | Current report (foreign issuer) | Jul 9, 2021 | Jul 8, 2021 |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| 20-F | Annual report (foreign issuer) | May 12, 2021 | Dec 31, 2020 |
| 6-K | Current report (foreign issuer) | May 6, 2021 | May 5, 2021 |
| NT 20-F | Filing | Apr 30, 2021 | Dec 31, 2020 |
| 6-K | Current report (foreign issuer) | Apr 27, 2021 | Apr 26, 2021 |
| 6-K | Current report (foreign issuer) | Apr 9, 2021 | Apr 8, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 17, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| 6-K | Current report (foreign issuer) | Feb 4, 2021 | Feb 4, 2021 |
| 6-K | Current report (foreign issuer) | Feb 2, 2021 | Feb 1, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 8, 2021 | — |
| 6-K | Current report (foreign issuer) | Jan 8, 2021 | Jan 7, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Dec 8, 2020 | — |
| 6-K | Current report (foreign issuer) | Nov 3, 2020 | Nov 3, 2020 |
| 6-K | Current report (foreign issuer) | Oct 27, 2020 | Oct 26, 2020 |
| 6-K | Current report (foreign issuer) | Oct 27, 2020 | Oct 26, 2020 |
| 6-K | Current report (foreign issuer) | Oct 8, 2020 | Oct 7, 2020 |
| UPLOAD | Letter from the SEC | Sep 10, 2020 | — |
| CORRESP | Letter to the SEC | Sep 9, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 25, 2020 | — |
| CORRESP | Letter to the SEC | Aug 14, 2020 | — |
| CORRESP | Letter to the SEC | Aug 6, 2020 | — |
| 6-K | Current report (foreign issuer) | Jul 30, 2020 | Jul 29, 2020 |
| 6-K | Current report (foreign issuer) | Jul 28, 2020 | Jul 27, 2020 |
| CORRESP | Letter to the SEC | Jul 22, 2020 | — |
| UPLOAD | Letter from the SEC | Jul 9, 2020 | — |
| 6-K | Current report (foreign issuer) | Jul 8, 2020 | Jul 7, 2020 |
| 20-F | Annual report (foreign issuer) | Jun 12, 2020 | Dec 31, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| 6-K | Current report (foreign issuer) | Apr 29, 2020 | Apr 29, 2020 |
| 6-K | Current report (foreign issuer) | Apr 29, 2020 | Apr 29, 2020 |
| 6-K | Current report (foreign issuer) | Apr 28, 2020 | Apr 27, 2020 |
| 6-K | Current report (foreign issuer) | Apr 9, 2020 | Apr 8, 2020 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- SIMO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Cayman Islands
- Headquarters
- Hong Kong Island, Hong Kong
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1329394
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.