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 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Sep 21, 2026 | Jul 29, 2026 |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Jul 29, 2026 | Jul 29, 2026 |
| S-8 | Employee stock plan registration | Jul 10, 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 | — |
| 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 |
| 10-K | Annual report | Mar 16, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2026 | Mar 4, 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 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 3, 2025 | Nov 3, 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 |
| 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 |
| 8-K |
Current report
Shareholder vote results
|
Jun 26, 2025 | Jun 23, 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 |
| 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 |
| 8-K |
Current report
Material agreement, New debt
|
Dec 19, 2024 | Dec 16, 2024 |
| 10-Q | Quarterly report | Nov 7, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2024 | Oct 30, 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 |
| 8-K |
Current report
Shareholder vote results
|
Jun 20, 2024 | Jun 13, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 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 |
| 10-K | Annual report | Mar 8, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Feb 28, 2024 | Feb 28, 2024 |
| 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 |
| 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 |
| SD | Specialized disclosure (conflict minerals) | May 30, 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 |
| 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 |
| 10-K | Annual report | Feb 22, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Feb 16, 2023 | Feb 16, 2023 |
| 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 |
| 10-Q | Quarterly report | Aug 9, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 8, 2022 | Aug 8, 2022 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2022 | — |
| 10-Q | Quarterly report | May 6, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 3, 2022 | May 3, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Apr 25, 2022 | Apr 21, 2022 |
| 8-K |
Current report
Material agreement, Agreement ended, Regulation FD disclosure
|
Apr 6, 2022 | Apr 4, 2022 |
| DEF 14A | Proxy statement | Mar 21, 2022 | Apr 21, 2022 |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 14, 2022 | Mar 14, 2022 |
| 10-K | Annual report | Feb 23, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Feb 16, 2022 | Feb 16, 2022 |
| 8-K |
Current report
Other events
|
Jan 31, 2022 | Jan 31, 2022 |
| 8-K |
Current report
Listing notice
|
Jan 7, 2022 | Jan 4, 2022 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 3, 2022 | Dec 29, 2021 |
| CERT | Nyse certification | Dec 27, 2021 | — |
| 8-K/A |
Amended current report
Material agreement, Regulation FD disclosure
|
Dec 23, 2021 | Dec 21, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Dec 21, 2021 | Dec 21, 2021 |
| 8-K |
Current report
Agreement ended
|
Dec 21, 2021 | Dec 20, 2021 |
| 8-A12B | Filing | Dec 14, 2021 | — |
| 8-K |
Current report
Material agreement, Agreement ended, Change to shareholder rights, Bylaw or fiscal year change, Regulation FD disclosure, Other events
|
Dec 14, 2021 | Dec 13, 2021 |
| 10-Q | Quarterly report | Nov 5, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Other events
|
Oct 29, 2021 | Oct 28, 2021 |
| 8-K |
Current report
Results of operations
|
Oct 25, 2021 | Oct 25, 2021 |
| 8-K |
Current report
Other events
|
Sep 27, 2021 | Sep 25, 2021 |
| 8-K |
Current report
Other events
|
Sep 14, 2021 | Sep 13, 2021 |
| DEFA14A | Additional proxy material | Aug 30, 2021 | — |
| 8-K |
Current report
Other events
|
Aug 30, 2021 | Aug 27, 2021 |
| DEFA14A | Additional proxy material | Aug 23, 2021 | — |
| 8-K |
Current report
Material agreement
|
Aug 23, 2021 | Aug 23, 2021 |
| 8-K |
Current report
Other events
|
Aug 18, 2021 | Aug 18, 2021 |
| 10-Q | Quarterly report | Aug 6, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2021 | Aug 5, 2021 |
| 8-K |
Current report
Other events
|
Jul 29, 2021 | Jul 26, 2021 |
| DEFA14A | Additional proxy material | Jul 29, 2021 | — |
| DEFA14A | Additional proxy material | Jul 9, 2021 | — |
| 8-K |
Current report
Other events
|
Jul 9, 2021 | Jul 9, 2021 |
| DEFA14A | Additional proxy material | Jul 1, 2021 | — |
| 8-K |
Current report
Other events
|
Jul 1, 2021 | Jun 30, 2021 |
| DEFA14A | Additional proxy material | Jun 17, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 17, 2021 | Jun 16, 2021 |
| DEFA14A | Additional proxy material | Jun 17, 2021 | — |
| DEFA14A | Additional proxy material | Jun 16, 2021 | — |
| 8-K |
Current report
Other events
|
Jun 16, 2021 | Jun 15, 2021 |
| DEFA14A | Additional proxy material | Jun 14, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jun 14, 2021 | Jun 11, 2021 |
| 8-K |
Current report
Other events
|
Jun 8, 2021 | Jun 8, 2021 |
| DEFA14A | Additional proxy material | Jun 4, 2021 | — |
| SD | Specialized disclosure (conflict minerals) | Jun 1, 2021 | — |
| 425 | Filing | May 28, 2021 | — |
| 8-K |
Current report
Other events
|
May 28, 2021 | May 26, 2021 |
| DEFA14A | Additional proxy material | May 19, 2021 | — |
| 10-Q | Quarterly report | May 10, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 10, 2021 | May 10, 2021 |
| DEFM14A | Filing | May 7, 2021 | — |
| 10-K/A | Amended annual report | Apr 30, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 23, 2021 | Apr 19, 2021 |
| PREM14A | Filing | Apr 19, 2021 | Apr 19, 2021 |
| DEFA14A | Additional proxy material | Apr 5, 2021 | — |
| DEFA14A | Additional proxy material | Mar 29, 2021 | — |
| 8-K |
Current report
Material agreement, Other events
|
Mar 29, 2021 | Mar 25, 2021 |
| DEFA14A | Additional proxy material | Mar 26, 2021 | — |
| 8-K |
Current report
Other events
|
Mar 26, 2021 | Mar 26, 2021 |
| 10-K | Annual report | Mar 9, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 17, 2021 | Feb 17, 2021 |
| 8-K |
Current report
Bylaw or fiscal year change
|
Dec 30, 2020 | Dec 30, 2020 |
| 10-Q | Quarterly report | Nov 6, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Oct 29, 2020 | Oct 29, 2020 |
| 8-K |
Current report
Acquisition or sale of assets, Regulation FD disclosure, Other events
|
Sep 8, 2020 | Sep 1, 2020 |
| 10-Q | Quarterly report | Aug 7, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations, Other events
|
Jul 30, 2020 | Jul 30, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jul 20, 2020 | Jul 16, 2020 |
| S-8 | Employee stock plan registration | Jul 15, 2020 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 17, 2020 | Jun 11, 2020 |
| SD | Specialized disclosure (conflict minerals) | May 29, 2020 | — |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
May 21, 2020 | May 21, 2020 |
| 10-Q | Quarterly report | May 11, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Regulation FD disclosure
|
May 7, 2020 | May 6, 2020 |
| 8-K |
Current report
Results of operations
|
May 6, 2020 | May 6, 2020 |
| DEF 14A | Proxy statement | Apr 29, 2020 | Jun 11, 2020 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Mar 31, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Officer or director change
|
Mar 27, 2020 | Mar 26, 2020 |
| CT ORDER | Filing | Mar 17, 2020 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Mar 10, 2020 | Mar 10, 2020 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Mar 2, 2020 | Feb 28, 2020 |
| S-8 | Employee stock plan registration | Feb 21, 2020 | — |
| 10-K | Annual report | Feb 21, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 20, 2020 | Feb 20, 2020 |
| 8-K |
Current report
Results of operations
|
Feb 19, 2020 | Feb 19, 2020 |
| 10-Q | Quarterly report | Nov 7, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Oct 23, 2019 | Oct 23, 2019 |
| CT ORDER | Filing | Sep 10, 2019 | — |
| 10-Q | Quarterly report | Aug 8, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Jul 30, 2019 | Jul 30, 2019 |
| 8-K |
Current report
Shareholder vote results
|
Jun 17, 2019 | Jun 11, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2019 | — |
| 10-Q | Quarterly report | May 10, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
Apr 30, 2019 | Apr 30, 2019 |
| DEF 14A | Proxy statement | Apr 30, 2019 | Jun 11, 2019 |
| CT ORDER | Filing | Mar 19, 2019 | — |
| S-8 | Employee stock plan registration | Feb 22, 2019 | — |
| 10-K | Annual report | Feb 22, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Feb 14, 2019 | Feb 14, 2019 |
| 8-K |
Current report
Officer or director change
|
Jan 11, 2019 | Jan 9, 2019 |
| 10-Q | Quarterly report | Nov 7, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2018 | Oct 30, 2018 |
| 8-K |
Current report
Officer or director change
|
Oct 26, 2018 | Oct 22, 2018 |
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.
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
- 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.