MAGNACHIP SEMICONDUCTOR Corp SEC filings MX
MAGNACHIP SEMICONDUCTOR Corp has 976 filings in SEC EDGAR's recent list, going back to Apr 26, 2005. Its latest annual report, Form ARS, was filed on Apr 30, 2026 for the period ended Apr 30, 2026. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 1, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 1, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 1, 2026 |
| 4 | Insider transaction | Aug 3, 2026 | Aug 1, 2026 |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 3 | Initial insider ownership | Jul 6, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 20, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 12, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 11, 2026 | — |
| 3 | Initial insider ownership | Jan 26, 2026 | Jan 14, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jan 20, 2026 | — |
| 4 | Insider transaction | Jan 2, 2026 | Aug 15, 2025 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| SCHEDULE 13D | Ownership over 5% (active) | Nov 20, 2025 | — |
| 4 | Insider transaction | Nov 17, 2025 | Nov 15, 2025 |
| 4 | Insider transaction | Nov 17, 2025 | Nov 15, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 3, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jun 17, 2025 | Jun 15, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 1, 2025 |
| 4 | Insider transaction | Mar 18, 2025 | Mar 14, 2025 |
| 4 | Insider transaction | Mar 17, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 17, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Mar 1, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 13, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 12, 2025 | — |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Jan 3, 2025 | Dec 31, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 2, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 15, 2024 | — |
| 3 | Initial insider ownership | Aug 12, 2024 | Aug 1, 2024 |
| 4/A | Filing | Jul 11, 2024 | Jun 1, 2024 |
| 3/A | Filing | Jul 11, 2024 | May 1, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 18, 2024 | Jun 15, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 13, 2024 | Jun 1, 2024 |
| 4 | Insider transaction | Jun 4, 2024 | Jun 1, 2024 |
| 3 | Initial insider ownership | May 13, 2024 | May 1, 2024 |
| 4 | Insider transaction | Mar 13, 2024 | Mar 11, 2024 |
| 4 | Insider transaction | Mar 13, 2024 | Mar 12, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4 | Insider transaction | Jan 3, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 3, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Dec 12, 2023 | Dec 8, 2023 |
| 4 | Insider transaction | Dec 12, 2023 | Dec 8, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4/A | Filing | Aug 21, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 17, 2023 | Aug 15, 2023 |
| 4 | Insider transaction | Aug 16, 2023 | Aug 14, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 3 | Initial insider ownership | May 23, 2023 | May 19, 2023 |
| SC 13G | Ownership over 5% (passive) | May 15, 2023 | — |
| 4 | Insider transaction | Mar 27, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Mar 27, 2023 | Mar 23, 2023 |
| 4 | Insider transaction | Mar 14, 2023 | Mar 12, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| 4 | Insider transaction | Feb 21, 2023 | Feb 16, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2023 | — |
| 4 | Insider transaction | Jan 4, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Jan 4, 2023 | Dec 31, 2022 |
| 4 | Insider transaction | Sep 1, 2022 | Aug 31, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Aug 17, 2022 | Aug 15, 2022 |
| 4 | Insider transaction | Jun 1, 2022 | May 27, 2022 |
| 4 | Insider transaction | Mar 14, 2022 | Mar 12, 2022 |
| 4 | Insider transaction | Mar 2, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 2, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 2, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 2, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Mar 2, 2022 | Feb 28, 2022 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 25, 2022 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 24, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 18, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 18, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 18, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 18, 2022 |
| 4 | Insider transaction | Feb 23, 2022 | Feb 18, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| 4 | Insider transaction | Jan 19, 2022 | Jan 18, 2022 |
| 4 | Insider transaction | Jan 19, 2022 | Jan 16, 2022 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| 4 | Insider transaction | Jan 4, 2022 | Dec 31, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 8, 2021 | — |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Sep 2, 2021 | Aug 31, 2021 |
| 4 | Insider transaction | Aug 16, 2021 | Aug 12, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | May 24, 2021 | — |
| 4 | Insider transaction | May 12, 2021 | May 10, 2021 |
| 4 | Insider transaction | Mar 16, 2021 | Mar 12, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 4 | Insider transaction | Mar 2, 2021 | Mar 1, 2021 |
| 4/A | Form 4/a submission | Feb 24, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 18, 2021 | Feb 16, 2021 |
| 4 | Insider transaction | Feb 18, 2021 | Feb 16, 2021 |
| 4 | Insider transaction | Feb 18, 2021 | Feb 16, 2021 |
| 4 | Insider transaction | Feb 18, 2021 | Feb 16, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2021 | — |
| 4 | Insider transaction | Jan 19, 2021 | Jan 16, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 15, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 6, 2021 | — |
| 4 | Insider transaction | Jan 5, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 5, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 5, 2021 | Dec 31, 2020 |
| 4 | Insider transaction | Jan 5, 2021 | Dec 31, 2020 |
| 3/A | Form 3/a submission | Jan 5, 2021 | Feb 28, 2020 |
| 4 | Insider transaction | Nov 6, 2020 | Nov 4, 2020 |
| 4 | Insider transaction | Nov 3, 2020 | Oct 30, 2020 |
| 4 | Insider transaction | Oct 21, 2020 | Oct 19, 2020 |
| 4 | Insider transaction | Oct 19, 2020 | Oct 15, 2020 |
| SC 13G | Ownership over 5% (passive) | Oct 16, 2020 | — |
| 4 | Insider transaction | Oct 15, 2020 | Oct 13, 2020 |
| 4 | Insider transaction | Oct 13, 2020 | Oct 8, 2020 |
| 4 | Insider transaction | Aug 5, 2020 | Aug 4, 2020 |
| 4 | Insider transaction | Aug 5, 2020 | Aug 3, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jul 20, 2020 | Jul 16, 2020 |
| 3 | Initial insider ownership | Jul 20, 2020 | Jul 16, 2020 |
| 4 | Insider transaction | Jun 4, 2020 | Jun 2, 2020 |
| 4 | Insider transaction | Jun 3, 2020 | Jun 1, 2020 |
| 3 | Initial insider ownership | Jun 3, 2020 | Jun 1, 2020 |
| 4 | Insider transaction | May 26, 2020 | May 25, 2020 |
| 4 | Insider transaction | May 26, 2020 | May 22, 2020 |
| 3 | Initial insider ownership | May 26, 2020 | May 25, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 7, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 7, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 7, 2020 |
| 4 | Insider transaction | May 8, 2020 | May 7, 2020 |
| SC 13G | Ownership over 5% (passive) | Apr 17, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Apr 17, 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
- MX (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Cheongju-Si
- SEC filer status
- Accelerated filer, Smaller reporting company
- SEC CIK
- 1325702
- Former names
- MAGNACHIP SEMICONDUCTOR Corp (until Nov 5, 2026); MAGNACHIP SEMICONDUCTOR LLC (until Mar 8, 2011)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.