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 |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 5, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2026 | Nov 4, 2026 |
| 424B3 | Prospectus | Oct 14, 2026 | — |
| EFFECT | Filing | Oct 13, 2026 | — |
| S-3 | Shelf registration | Oct 5, 2026 | — |
| 4 | Insider transaction | Sep 25, 2026 | Sep 23, 2026 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Sep 21, 2026 | Jul 29, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 15, 2026 |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 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 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| S-8 | Employee stock plan registration | Jul 10, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 1, 2026 |
| 3 | Initial insider ownership | Jul 6, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jun 30, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Material agreement
|
Jun 17, 2026 | Jun 17, 2026 |
| 424B5 | Prospectus supplement | Jun 17, 2026 | — |
| 424B3 | Prospectus | Jun 17, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2026 | Jun 11, 2026 |
| EFFECT | Filing | Jun 16, 2026 | — |
| CORRESP | Letter to the SEC | Jun 12, 2026 | — |
| S-3 | Shelf registration | Jun 12, 2026 | — |
| UPLOAD | Letter from the SEC | Jun 11, 2026 | — |
| DRSLTR | Filing | Jun 8, 2026 | — |
| DRS | Filing | Jun 8, 2026 | — |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 1, 2026 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2026 | — |
| 10-Q | Quarterly report | May 8, 2026 | Mar 31, 2026 |
| ARS | Annual report to shareholders | Apr 30, 2026 | Apr 30, 2026 |
| DEF 14A | Proxy statement | Apr 30, 2026 | Jun 11, 2026 |
| 8-K |
Current report
Results of operations
|
Apr 28, 2026 | Apr 28, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 20, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 10-K | Annual report | Mar 16, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 16, 2026 | Mar 12, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2026 | Mar 4, 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 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 20, 2026 | Jan 14, 2026 |
| 8-K |
Current report
Officer or director change
|
Jan 14, 2026 | Jan 13, 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 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2025 | Nov 3, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 1, 2025 |
| 8-K/A |
Amended current report
Officer or director change
|
Oct 3, 2025 | Aug 8, 2025 |
| 8-K/A |
Amended current report
Officer or director change
|
Sep 9, 2025 | May 21, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 25, 2025 |
| 4 | Insider transaction | Aug 26, 2025 | Aug 22, 2025 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Aug 11, 2025 | Aug 8, 2025 |
| 10-Q | Quarterly report | Aug 5, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2025 | Jul 31, 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 |
| 8-K |
Current report
Shareholder vote results
|
Jun 26, 2025 | Jun 23, 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 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Officer or director change
|
May 23, 2025 | May 21, 2025 |
| 8-K/A |
Amended current report
Exit or restructuring costs
|
May 13, 2025 | Apr 8, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| 8-K |
Current report
Officer or director change
|
Apr 30, 2025 | Apr 28, 2025 |
| ARS | Annual report to shareholders | Apr 29, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | Apr 29, 2025 | Jun 23, 2025 |
| 8-K |
Current report
Exit or restructuring costs, Regulation FD disclosure
|
Apr 8, 2025 | Apr 8, 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 |
| 8-K/A |
Amended current report
Auditor change
|
Mar 14, 2025 | Mar 11, 2025 |
| 10-K | Annual report | Mar 14, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Auditor change
|
Mar 14, 2025 | Mar 11, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2025 | Mar 12, 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 | — |
| 8-K |
Current report
Material agreement, New debt
|
Dec 19, 2024 | Dec 16, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 15, 2024 | — |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2024 | Oct 30, 2024 |
| 3 | Initial insider ownership | Aug 12, 2024 | Aug 1, 2024 |
| 10-Q | Quarterly report | Aug 8, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Officer or director change
|
Jul 31, 2024 | Jul 29, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| 4/A | Filing | Jul 11, 2024 | Jun 1, 2024 |
| 3/A | Filing | Jul 11, 2024 | May 1, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Jun 20, 2024 | Jun 13, 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 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| 3 | Initial insider ownership | May 13, 2024 | May 1, 2024 |
| 10-Q | Quarterly report | May 10, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 2, 2024 | May 2, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| DEF 14A | Proxy statement | Apr 29, 2024 | Jun 13, 2024 |
| 8-K |
Current report
Material agreement, New debt
|
Mar 29, 2024 | Mar 26, 2024 |
| 8-K |
Current report
Officer or director change
|
Mar 26, 2024 | Mar 22, 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 |
| 10-K | Annual report | Mar 8, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2024 | Feb 28, 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 |
| 10-Q | Quarterly report | Nov 8, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Officer or director change
|
Sep 6, 2023 | Sep 6, 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 |
| 10-Q | Quarterly report | Aug 8, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2023 | Aug 7, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 26, 2023 | Jul 24, 2023 |
| 8-K |
Current report
Officer or director change
|
Jul 17, 2023 | Jul 14, 2023 |
| S-8 | Employee stock plan registration | Jun 23, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Jun 23, 2023 | May 18, 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 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| 3 | Initial insider ownership | May 23, 2023 | May 19, 2023 |
| 8-K |
Current report
Officer or director change
|
May 23, 2023 | May 19, 2023 |
| 8-K |
Current report
Shareholder vote results
|
May 19, 2023 | May 18, 2023 |
| SC 13G | Ownership over 5% (passive) | May 15, 2023 | — |
| 10-Q | Quarterly report | May 8, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 3, 2023 | May 3, 2023 |
| DEFA14A | Additional proxy material | May 1, 2023 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 1, 2023 | Apr 28, 2023 |
| ARS | Annual report to shareholders | Apr 17, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | Apr 17, 2023 | — |
| 8-K |
Current report
Material agreement, Other events
|
Apr 13, 2023 | Apr 11, 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 |
| 10-K | Annual report | Feb 22, 2023 | Dec 31, 2022 |
| 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 |
| 8-K |
Current report
Results of operations
|
Feb 16, 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 |
| UPLOAD | Letter from the SEC | Nov 17, 2022 | — |
| CORRESP | Letter to the SEC | Nov 14, 2022 | — |
| 10-Q | Quarterly report | Nov 8, 2022 | Sep 30, 2022 |
| 8-K/A |
Amended current report
Results of operations
|
Nov 4, 2022 | Nov 2, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2022 | Nov 2, 2022 |
| UPLOAD | Letter from the SEC | Oct 28, 2022 | — |
| 8-K |
Current report
Other events
|
Sep 13, 2022 | Sep 12, 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 |
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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)
Other Semiconductors & Related Devices companies
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.