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 |
|---|---|---|---|
| 4 | Insider transaction | Nov 3, 2026 | Oct 30, 2026 |
| 6-K | Current report (foreign issuer) | Oct 29, 2026 | Oct 29, 2026 |
| 6-K | Current report (foreign issuer) | Oct 29, 2026 | Oct 29, 2026 |
| 4 | Insider transaction | Oct 14, 2026 | Oct 12, 2026 |
| 6-K | Current report (foreign issuer) | Oct 13, 2026 | Oct 13, 2026 |
| 4 | Insider transaction | Sep 24, 2026 | Sep 22, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 4 | Insider transaction | Sep 9, 2026 | Sep 7, 2026 |
| 6-K | Current report (foreign issuer) | Sep 9, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Aug 19, 2026 | Aug 12, 2026 |
| 3 | Initial insider ownership | Aug 10, 2026 | Aug 10, 2026 |
| 6-K | Current report (foreign issuer) | Aug 10, 2026 | Aug 10, 2026 |
| 6-K | Current report (foreign issuer) | Aug 3, 2026 | Aug 3, 2026 |
| 6-K | Current report (foreign issuer) | Aug 3, 2026 | Aug 3, 2026 |
| 4 | Insider transaction | Jul 31, 2026 | Jul 29, 2026 |
| 6-K | Current report (foreign issuer) | Jul 30, 2026 | Jul 30, 2026 |
| 6-K | Current report (foreign issuer) | Jul 30, 2026 | Jul 30, 2026 |
| 4 | Insider transaction | Jul 24, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 17, 2026 | Jul 15, 2026 |
| 4 | Insider transaction | Jul 15, 2026 | Jul 13, 2026 |
| 6-K | Current report (foreign issuer) | Jul 9, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 8, 2026 | Jul 6, 2026 |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jun 23, 2026 | Jun 18, 2026 |
| 6-K | Current report (foreign issuer) | Jun 9, 2026 | Jun 9, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 3/A | Form 3a | May 27, 2026 | Mar 18, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 6-K/A | Form 6-k/a | May 8, 2026 | May 8, 2026 |
| 6-K | Current report (foreign issuer) | May 8, 2026 | May 8, 2026 |
| 6-K | Current report (foreign issuer) | Apr 29, 2026 | Apr 29, 2026 |
| 6-K | Current report (foreign issuer) | Apr 29, 2026 | Apr 29, 2026 |
| 4 | Insider transaction | Apr 28, 2026 | Apr 24, 2026 |
| 4 | Insider transaction | Apr 23, 2026 | Apr 21, 2026 |
| 4 | Insider transaction | Apr 22, 2026 | Apr 20, 2026 |
| 4 | Insider transaction | Apr 20, 2026 | Apr 16, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 15, 2026 | — |
| 4 | Insider transaction | Apr 15, 2026 | Apr 13, 2026 |
| 4 | Insider transaction | Apr 13, 2026 | Apr 9, 2026 |
| 4 | Insider transaction | Apr 10, 2026 | Apr 8, 2026 |
| 6-K | Current report (foreign issuer) | Apr 10, 2026 | Apr 10, 2026 |
| 6-K | Current report (foreign issuer) | Apr 8, 2026 | Apr 8, 2026 |
| 20-F | Annual report (foreign issuer) | Apr 1, 2026 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Mar 27, 2026 | Mar 27, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 6-K | Current report (foreign issuer) | Mar 10, 2026 | Mar 10, 2026 |
| 6-K | Current report (foreign issuer) | Feb 10, 2026 | Feb 10, 2026 |
| 6-K | Current report (foreign issuer) | Feb 5, 2026 | Feb 5, 2026 |
| 6-K | Current report (foreign issuer) | Feb 5, 2026 | Feb 5, 2026 |
| 6-K | Current report (foreign issuer) | Jan 9, 2026 | Jan 9, 2026 |
| 6-K | Current report (foreign issuer) | Dec 9, 2025 | Dec 9, 2025 |
| 6-K | Current report (foreign issuer) | Nov 10, 2025 | Nov 10, 2025 |
| 6-K | Current report (foreign issuer) | Oct 30, 2025 | Oct 30, 2025 |
| 6-K | Current report (foreign issuer) | Oct 30, 2025 | Oct 30, 2025 |
| 6-K | Current report (foreign issuer) | Oct 9, 2025 | Oct 9, 2025 |
| 6-K | Current report (foreign issuer) | Sep 10, 2025 | Sep 9, 2025 |
| 6-K | Current report (foreign issuer) | Aug 11, 2025 | Aug 11, 2025 |
| 6-K | Current report (foreign issuer) | Jul 31, 2025 | Jul 31, 2025 |
| 6-K | Current report (foreign issuer) | Jul 31, 2025 | Jul 31, 2025 |
| 6-K | Current report (foreign issuer) | Jul 10, 2025 | Jul 10, 2025 |
| 6-K | Current report (foreign issuer) | Jun 10, 2025 | Jun 10, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2025 | — |
| 6-K | Current report (foreign issuer) | May 9, 2025 | May 9, 2025 |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 30, 2025 |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 30, 2025 |
| 6-K | Current report (foreign issuer) | Apr 21, 2025 | Apr 10, 2025 |
| 6-K/A | Form 6-k/a | Apr 7, 2025 | Apr 7, 2025 |
| 6-K | Current report (foreign issuer) | Apr 1, 2025 | Apr 1, 2025 |
| 6-K | Current report (foreign issuer) | Mar 31, 2025 | Mar 31, 2025 |
| 20-F | Annual report (foreign issuer) | Mar 27, 2025 | Dec 31, 2024 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 12, 2025 | — |
| 6-K | Current report (foreign issuer) | Mar 10, 2025 | Mar 10, 2025 |
| 6-K | Current report (foreign issuer) | Feb 13, 2025 | Feb 13, 2025 |
| 6-K | Current report (foreign issuer) | Feb 13, 2025 | Feb 13, 2025 |
| 6-K | Current report (foreign issuer) | Feb 10, 2025 | Feb 10, 2025 |
| 6-K | Current report (foreign issuer) | Feb 7, 2025 | Feb 7, 2025 |
| 6-K | Current report (foreign issuer) | Jan 10, 2025 | Jan 10, 2025 |
| 6-K | Current report (foreign issuer) | Dec 10, 2024 | Dec 10, 2024 |
| 6-K | Current report (foreign issuer) | Nov 12, 2024 | Nov 11, 2024 |
| 6-K | Current report (foreign issuer) | Oct 31, 2024 | Oct 31, 2024 |
| 6-K | Current report (foreign issuer) | Oct 31, 2024 | Oct 31, 2024 |
| 6-K | Current report (foreign issuer) | Oct 9, 2024 | Oct 9, 2024 |
| 6-K | Current report (foreign issuer) | Sep 10, 2024 | Sep 10, 2024 |
| S-8 | Employee stock plan registration | Aug 15, 2024 | — |
| 6-K | Current report (foreign issuer) | Aug 9, 2024 | Aug 9, 2024 |
| 6-K | Current report (foreign issuer) | Jul 25, 2024 | Jul 25, 2024 |
| 6-K | Current report (foreign issuer) | Jul 25, 2024 | Jul 25, 2024 |
| 6-K | Current report (foreign issuer) | Jul 9, 2024 | Jul 8, 2024 |
| 6-K | Current report (foreign issuer) | Jun 11, 2024 | Jun 11, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2024 | — |
| 6-K | Current report (foreign issuer) | May 9, 2024 | May 9, 2024 |
| SC 13D | Ownership over 5% (active) | May 8, 2024 | — |
| 3 | Initial insider ownership | May 8, 2024 | May 3, 2024 |
| 6-K | Current report (foreign issuer) | Apr 25, 2024 | Apr 25, 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 |
| 6-K | Current report (foreign issuer) | Apr 8, 2024 | Apr 8, 2024 |
| 20-F | Annual report (foreign issuer) | Apr 3, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Mar 28, 2024 | Mar 27, 2024 |
| 6-K | Current report (foreign issuer) | Mar 11, 2024 | Mar 11, 2024 |
| 6-K | Current report (foreign issuer) | Feb 22, 2024 | Feb 22, 2024 |
| 6-K | Current report (foreign issuer) | Feb 15, 2024 | Feb 15, 2024 |
| 6-K | Current report (foreign issuer) | Feb 1, 2024 | Feb 1, 2024 |
| 6-K | Current report (foreign issuer) | Feb 1, 2024 | Feb 1, 2024 |
| 6-K | Current report (foreign issuer) | Jan 9, 2024 | Jan 9, 2024 |
| 6-K | Current report (foreign issuer) | Dec 11, 2023 | Dec 11, 2023 |
| 6-K | Current report (foreign issuer) | Nov 9, 2023 | Nov 9, 2023 |
| S-8 | Employee stock plan registration | Oct 27, 2023 | — |
| 6-K | Current report (foreign issuer) | Oct 26, 2023 | Oct 26, 2023 |
| 6-K | Current report (foreign issuer) | Oct 26, 2023 | Oct 26, 2023 |
| 6-K | Current report (foreign issuer) | Oct 11, 2023 | Oct 11, 2023 |
| 6-K | Current report (foreign issuer) | Sep 11, 2023 | Sep 11, 2023 |
| 6-K | Current report (foreign issuer) | Aug 9, 2023 | Aug 9, 2023 |
| 6-K | Current report (foreign issuer) | Jul 27, 2023 | Jul 27, 2023 |
| 6-K | Current report (foreign issuer) | Jul 27, 2023 | Jul 27, 2023 |
| 6-K | Current report (foreign issuer) | Jul 10, 2023 | Jul 10, 2023 |
| 6-K | Current report (foreign issuer) | Jun 9, 2023 | Jun 9, 2023 |
| 6-K | Current report (foreign issuer) | Jun 9, 2023 | Jun 9, 2023 |
| 6-K | Current report (foreign issuer) | Jun 7, 2023 | Jun 7, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2023 | — |
| 6-K | Current report (foreign issuer) | May 26, 2023 | May 26, 2023 |
| 6-K | Current report (foreign issuer) | May 16, 2023 | May 16, 2023 |
| 6-K | Current report (foreign issuer) | May 9, 2023 | May 9, 2023 |
| 6-K | Current report (foreign issuer) | Apr 27, 2023 | Apr 27, 2023 |
| 6-K | Current report (foreign issuer) | Apr 27, 2023 | Apr 27, 2023 |
| 6-K | Current report (foreign issuer) | Apr 11, 2023 | Apr 11, 2023 |
| 6-K | Current report (foreign issuer) | Apr 11, 2023 | Apr 11, 2023 |
| 20-F | Annual report (foreign issuer) | Apr 10, 2023 | Dec 31, 2022 |
| 6-K | Current report (foreign issuer) | Mar 30, 2023 | Mar 30, 2023 |
| 6-K | Current report (foreign issuer) | Mar 9, 2023 | Mar 9, 2023 |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| 6-K | Current report (foreign issuer) | Jan 10, 2023 | Jan 10, 2023 |
| 6-K | Current report (foreign issuer) | Dec 9, 2022 | Dec 9, 2022 |
| 6-K | Current report (foreign issuer) | Nov 9, 2022 | Nov 9, 2022 |
| 6-K | Current report (foreign issuer) | Oct 27, 2022 | Oct 27, 2022 |
| 6-K | Current report (foreign issuer) | Oct 27, 2022 | Oct 27, 2022 |
| 6-K | Current report (foreign issuer) | Oct 11, 2022 | Oct 11, 2022 |
| 6-K | Current report (foreign issuer) | Sep 12, 2022 | Aug 12, 2022 |
| 6-K | Current report (foreign issuer) | Aug 9, 2022 | Aug 9, 2022 |
| 6-K | Current report (foreign issuer) | Jul 28, 2022 | Jul 28, 2022 |
| 6-K | Current report (foreign issuer) | Jul 28, 2022 | Jul 28, 2022 |
| 6-K | Current report (foreign issuer) | Jul 11, 2022 | Jul 11, 2022 |
| 6-K | Current report (foreign issuer) | Jun 9, 2022 | Jun 9, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2022 | — |
| 6-K | Current report (foreign issuer) | May 10, 2022 | May 10, 2022 |
| 6-K | Current report (foreign issuer) | Apr 28, 2022 | Apr 28, 2022 |
| 6-K | Current report (foreign issuer) | Apr 28, 2022 | Apr 28, 2022 |
| 6-K | Current report (foreign issuer) | Apr 11, 2022 | Apr 11, 2022 |
| 6-K | Current report (foreign issuer) | Mar 30, 2022 | Mar 30, 2022 |
| 20-F | Annual report (foreign issuer) | Mar 29, 2022 | Dec 31, 2021 |
| 6-K | Current report (foreign issuer) | Mar 15, 2022 | Mar 15, 2022 |
| 6-K | Current report (foreign issuer) | Mar 9, 2022 | Mar 9, 2022 |
| S-8 | Employee stock plan registration | Feb 25, 2022 | — |
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
- 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.