ASE Technology Holding Co., Ltd. SEC filings ASX
ASE Technology Holding Co., Ltd. has 946 filings in SEC EDGAR's recent list, going back to Aug 28, 2000. Its latest annual report, Form 20-F, was filed on Apr 1, 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 |
|---|---|---|---|
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2019 | — |
| 25-NSE | Delisting notice | May 3, 2018 | — |
| 8-K12B | Form 8-k12b | Apr 30, 2018 | Apr 30, 2018 |
| 425 | Form 425 | Apr 30, 2018 | — |
| SD | Specialized disclosure (conflict minerals) | Apr 27, 2018 | — |
| 425 | Form 425 | Apr 13, 2018 | — |
| 425 | Form 425 | Mar 27, 2018 | — |
| 425 | Form 425 | Feb 12, 2018 | — |
| 425 | Form 425 | Feb 12, 2018 | — |
| 425 | Form 425 | Feb 12, 2018 | — |
| 425 | Form 425 | Feb 12, 2018 | — |
| 425 | Form 425 | Jan 24, 2018 | — |
| EFFECT | Filing | Jan 22, 2018 | — |
| CORRESP | Letter to the SEC | Jan 22, 2018 | — |
| CORRESP | Letter to the SEC | Jan 22, 2018 | — |
| 425 | Form 425 | Jan 16, 2018 | — |
| 425 | Form 425 | Dec 20, 2017 | — |
| 425 | Form 425 | Dec 14, 2017 | — |
| 425 | Form 425 | Nov 24, 2017 | — |
| 425 | Form 425 | Nov 24, 2017 | — |
| 425 | Form 425 | Jun 6, 2017 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2017 | — |
| 425 | Form 425 | May 16, 2017 | — |
| CORRESP | Letter to the SEC | Feb 24, 2017 | — |
| UPLOAD | Letter from the SEC | Jan 31, 2017 | — |
| CORRESP | Letter to the SEC | Jan 6, 2017 | — |
| UPLOAD | Letter from the SEC | Dec 20, 2016 | — |
| 425 | Form 425 | Nov 18, 2016 | — |
| 425 | Form 425 | Jun 30, 2016 | — |
| SD | Specialized disclosure (conflict minerals) | May 31, 2016 | — |
| 425 | Form 425 | May 27, 2016 | — |
| 425 | Form 425 | May 26, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Mar 17, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Mar 9, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Mar 8, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 26, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 25, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 24, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 17, 2016 | — |
| CORRESP | Letter to the SEC | Feb 16, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 16, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Feb 4, 2016 | — |
| CORRESP | Letter to the SEC | Jan 28, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Jan 28, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Jan 20, 2016 | — |
| CORRESP | Letter to the SEC | Jan 20, 2016 | — |
| SC TO-T/A | Form sc to-t/a | Dec 31, 2015 | — |
| SC TO-T | Filing | Dec 29, 2015 | — |
| SC TO-C | Form sc to-c | Dec 28, 2015 | — |
| SC TO-C | Form sc to-c | Dec 22, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 23, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 22, 2015 | — |
| CORRESP | Letter to the SEC | Sep 21, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 18, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 17, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 16, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 8, 2015 | — |
| CORRESP | Letter to the SEC | Sep 8, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Sep 3, 2015 | — |
| CORRESP | Letter to the SEC | Sep 3, 2015 | — |
| SC TO-T/A | Filing | Sep 1, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Aug 28, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Aug 27, 2015 | — |
| SC TO-T/A | Form sc to-t/a | Aug 26, 2015 | — |
| SC TO-T | Filing | Aug 24, 2015 | — |
| SC TO-C | Form sc to-c | Aug 21, 2015 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2015 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2014 | — |
| UPLOAD | Letter from the SEC | Aug 26, 2009 | — |
| CORRESP | Letter to the SEC | Aug 26, 2009 | — |
| UPLOAD | Letter from the SEC | Jul 21, 2009 | — |
| SC TO-C | Schedule to-c | Apr 17, 2007 | — |
| UPLOAD | Letter from the SEC | Feb 15, 2007 | — |
| SC 14D9 | Filing | Feb 15, 2007 | — |
| SC 14D9 | Filing | Feb 7, 2007 | — |
| CORRESP | Letter to the SEC | Feb 5, 2007 | — |
| UPLOAD | Letter from the SEC | Dec 19, 2006 | — |
| SC 14D9 | Filing | Dec 6, 2006 | — |
| SC 14D9 | Filing | Nov 30, 2006 | — |
| SC TO-C | Schedule to | Nov 24, 2006 | — |
| SC 14D9 | Filing | Nov 24, 2006 | — |
| UPLOAD | Letter from the SEC | Oct 21, 2005 | — |
| CORRESP | Letter to the SEC | Oct 20, 2005 | — |
| UPLOAD | Letter from the SEC | Aug 31, 2005 | — |
| RW | Filing | Nov 12, 2004 | — |
| 8-A12B | Advanced semiconductor engineering inc | Sep 20, 2000 | — |
Showing 93 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.
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Company profile
- Industry
- Semiconductors & Related Devices (SIC 3674)
- Listed as
- ASX (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- Taiwan
- Headquarters
- Kaohsiung
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1122411
- Former names
- ASE Industrial Holding Co., Ltd. (until Jun 8, 2018); ADVANCED SEMICONDUCTOR ENGINEERING INC (until Apr 30, 2018)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.