SemiLEDs Corp SEC filings LEDS
SemiLEDs Corp has 487 filings in SEC EDGAR's recent list, going back to Mar 30, 2005. Its latest annual report, Form ARS, was filed on Jul 15, 2026 for the period ended Aug 31, 2025. The latest quarterly report (Form 10-Q) was filed on Jul 14, 2026, covering the quarter ended May 31, 2026. The most recent current report (Form 8-K) was filed on Aug 31, 2026 (shareholder vote results). The company's fiscal year ends on August 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 28, 2025 | Nov 27, 2025 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 27, 2025 |
| 4 | Insider transaction | Nov 28, 2025 | Nov 27, 2025 |
| 4 | Insider transaction | Jul 14, 2025 | Jul 10, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 4, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 4, 2025 | — |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 27, 2024 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 27, 2024 |
| 4 | Insider transaction | Nov 27, 2024 | Nov 27, 2024 |
| 3 | Initial insider ownership | Jul 8, 2024 | Jul 3, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 4, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 4, 2024 | — |
| 4 | Insider transaction | Feb 20, 2024 | Feb 9, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Feb 20, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 18, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 16, 2024 | — |
| SC 13D | Ownership over 5% (active) | Jan 16, 2024 | — |
| 4 | Insider transaction | Jan 10, 2024 | Jan 8, 2024 |
| 4 | Insider transaction | Jan 10, 2024 | Jan 8, 2024 |
| 4 | Insider transaction | Jan 10, 2024 | Jan 8, 2024 |
| 4 | Insider transaction | Jan 9, 2024 | Jan 8, 2024 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Jul 11, 2023 | Jul 7, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 25, 2023 |
| 4 | Insider transaction | Nov 7, 2022 | Nov 7, 2022 |
| 4 | Insider transaction | Nov 7, 2022 | Nov 7, 2022 |
| 4 | Insider transaction | Nov 7, 2022 | Nov 7, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| 4 | Insider transaction | Nov 12, 2021 | Nov 12, 2021 |
| 4 | Insider transaction | Nov 12, 2021 | Nov 12, 2021 |
| 4 | Insider transaction | Nov 12, 2021 | Nov 12, 2021 |
| 4 | Insider transaction | Nov 12, 2021 | Nov 12, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2021 | — |
| 4 | Insider transaction | Feb 9, 2021 | Feb 9, 2021 |
| 4/A | Primary document | Nov 30, 2020 | Nov 12, 2020 |
| 4/A | Primary document | Nov 30, 2020 | Nov 12, 2020 |
| 4/A | Primary document | Nov 30, 2020 | Nov 12, 2020 |
| 4 | Insider transaction | Nov 16, 2020 | Nov 12, 2020 |
| 4 | Insider transaction | Nov 16, 2020 | Nov 12, 2020 |
| 4 | Insider transaction | Nov 16, 2020 | Nov 12, 2020 |
| 4 | Insider transaction | Nov 16, 2020 | Nov 12, 2020 |
| SC 13D/A | Amended ownership over 5% (active) | Jun 10, 2020 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jun 5, 2020 | — |
| 4 | Insider transaction | May 28, 2020 | May 26, 2020 |
| 4 | Insider transaction | May 28, 2020 | May 26, 2020 |
| 4 | Insider transaction | May 28, 2020 | May 26, 2020 |
| 4 | Insider transaction | May 27, 2020 | May 25, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Feb 7, 2020 |
| 4 | Insider transaction | Feb 28, 2020 | Nov 25, 2019 |
| 4 | Insider transaction | Feb 28, 2020 | Nov 25, 2019 |
| SC 13D | Ownership over 5% (active) | Feb 28, 2020 | — |
| 4 | Insider transaction | Feb 25, 2020 | Dec 10, 2019 |
| SC 13D | Ownership over 5% (active) | Feb 25, 2020 | — |
| 4 | Insider transaction | Jan 13, 2020 | Jan 10, 2020 |
| 4 | Insider transaction | Sep 6, 2019 | Sep 5, 2019 |
| 4 | Insider transaction | Sep 6, 2019 | Sep 5, 2019 |
| 4 | Insider transaction | Sep 6, 2019 | Sep 5, 2019 |
| 3 | Initial insider ownership | Sep 6, 2019 | Sep 5, 2019 |
| 4 | Insider transaction | Jul 12, 2018 | Jul 10, 2018 |
| 4 | Insider transaction | Jul 12, 2018 | Jul 10, 2018 |
| 4 | Insider transaction | Jul 12, 2018 | Jul 10, 2018 |
| 4 | Insider transaction | Jul 12, 2018 | Jul 10, 2018 |
| 4 | Insider transaction | Jul 12, 2018 | Jul 10, 2018 |
| 4 | Insider transaction | Feb 2, 2018 | Jan 31, 2018 |
| 4 | Insider transaction | Nov 24, 2017 | Nov 21, 2017 |
| 3 | Initial insider ownership | Aug 8, 2017 | Aug 8, 2017 |
| 4 | Insider transaction | Mar 31, 2017 | Mar 31, 2017 |
| 4 | Insider transaction | Mar 31, 2017 | Mar 31, 2017 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2017 | — |
| 3 | Initial insider ownership | Sep 2, 2016 | Aug 23, 2016 |
| 3 | Initial insider ownership | Aug 25, 2016 | Aug 17, 2016 |
| 4 | Insider transaction | Jun 28, 2016 | Jun 22, 2016 |
| 4 | Insider transaction | Apr 12, 2016 | Apr 12, 2016 |
| 3 | Initial insider ownership | Apr 12, 2016 | Apr 12, 2016 |
| 4 | Insider transaction | Apr 12, 2016 | Apr 12, 2016 |
| 4 | Insider transaction | Apr 12, 2016 | Apr 12, 2016 |
| 4 | Insider transaction | Feb 23, 2016 | Oct 16, 2015 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 2, 2016 | — |
| 4 | Insider transaction | Aug 25, 2015 | Aug 22, 2015 |
| 4 | Insider transaction | May 8, 2015 | May 7, 2015 |
| 4 | Insider transaction | May 8, 2015 | May 7, 2015 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2015 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 2, 2015 | — |
| 4 | Insider transaction | Jan 28, 2015 | Jan 26, 2015 |
| 4 | Insider transaction | Jan 14, 2015 | Jan 9, 2015 |
| 3 | Initial insider ownership | Jan 14, 2015 | Nov 21, 2014 |
| 4 | Insider transaction | May 13, 2014 | May 9, 2014 |
| 4 | Insider transaction | May 13, 2014 | May 9, 2014 |
| 4 | Insider transaction | May 13, 2014 | May 9, 2014 |
| 4 | Insider transaction | May 12, 2014 | May 8, 2014 |
| 4 | Insider transaction | Apr 23, 2014 | Apr 21, 2014 |
| 4 | Insider transaction | Apr 23, 2014 | Apr 21, 2014 |
| 4 | Insider transaction | Apr 23, 2014 | Apr 21, 2014 |
| 4 | Insider transaction | Apr 21, 2014 | Apr 17, 2014 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2014 | — |
| 4/A | Filing | Feb 13, 2014 | Apr 5, 2013 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2014 | — |
| SC 13G | Ownership over 5% (passive) | Jan 14, 2014 | — |
| 4 | Insider transaction | Apr 9, 2013 | Apr 5, 2013 |
| 4 | Insider transaction | Apr 9, 2013 | Apr 5, 2013 |
| 4 | Insider transaction | Apr 9, 2013 | Apr 5, 2013 |
| 4 | Insider transaction | Apr 9, 2013 | Apr 5, 2013 |
| 3 | Initial insider ownership | Apr 9, 2013 | Apr 5, 2013 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 15, 2013 | — |
| 4 | Insider transaction | Feb 13, 2013 | Feb 6, 2013 |
| 3 | Initial insider ownership | Feb 13, 2013 | Feb 6, 2013 |
| 4 | Insider transaction | Feb 7, 2013 | Feb 6, 2013 |
| 4 | Insider transaction | Feb 7, 2013 | Feb 6, 2013 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2013 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2013 | — |
| 4 | Insider transaction | Jan 17, 2013 | Jan 15, 2013 |
| 4 | Insider transaction | Jan 15, 2013 | Jan 11, 2013 |
| 4 | Insider transaction | Jan 11, 2013 | Jan 9, 2013 |
| 3 | Initial insider ownership | Jan 11, 2013 | Jan 4, 2013 |
| 4 | Insider transaction | Jan 2, 2013 | Dec 31, 2012 |
| 4 | Insider transaction | Dec 31, 2012 | Nov 16, 2012 |
| 4 | Insider transaction | Dec 28, 2012 | Dec 26, 2012 |
| 4 | Insider transaction | Dec 20, 2012 | Dec 18, 2012 |
| 4 | Insider transaction | Oct 26, 2012 | Oct 16, 2012 |
| 4 | Insider transaction | Oct 2, 2012 | Sep 28, 2012 |
| 3 | Initial insider ownership | Aug 23, 2012 | Aug 14, 2012 |
| 4 | Insider transaction | Feb 22, 2012 | Feb 20, 2012 |
| 4 | Insider transaction | Feb 22, 2012 | Feb 20, 2012 |
| 4 | Insider transaction | Feb 22, 2012 | Feb 20, 2012 |
| 4 | Insider transaction | Feb 22, 2012 | Feb 20, 2012 |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2012 | — |
| 4 | Insider transaction | Feb 8, 2012 | Feb 6, 2012 |
| 4 | Insider transaction | Feb 8, 2012 | Feb 6, 2012 |
| 3 | Initial insider ownership | Feb 8, 2012 | Feb 6, 2012 |
| 4 | Insider transaction | Feb 8, 2012 | Feb 7, 2012 |
| 4 | Insider transaction | Feb 8, 2012 | Feb 7, 2012 |
| 4 | Insider transaction | Feb 8, 2012 | Feb 7, 2012 |
| 4 | Insider transaction | Jul 7, 2011 | Jul 6, 2011 |
| 3 | Initial insider ownership | May 13, 2011 | May 9, 2011 |
| 4 | Insider transaction | Apr 4, 2011 | Mar 31, 2011 |
| 3 | Initial insider ownership | Mar 4, 2011 | Feb 22, 2011 |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2011 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2011 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2011 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2011 | — |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Jan 24, 2011 | Jan 20, 2011 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 4 | Insider transaction | Dec 9, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
| 3 | Initial insider ownership | Dec 8, 2010 | Dec 8, 2010 |
Showing 168 filings. 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- LEDS (Nasdaq)
- Fiscal year ends
- August 31
- Headquarters
- Chu-Nan, Taiwan
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1333822
Other Semiconductors & Related Devices companies
- Nvidia Corp NVDA
- Broadcom Inc. AVGO
- Micron Technology Inc MU
- Advanced Micro Devices Inc AMD
- Intel Corp INTC
- Applied Materials Inc /DE AMAT
- Texas Instruments Inc TXN
- Arm Holdings PLC /UK ARM
Source: SEC EDGAR filings. This is company-reported data, not investment advice.