Welcome to our dedicated page for MAGNACHIP SEMICONDUCTOR SEC filings (Ticker: MX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Magnachip Semiconductor filings document the reporting and governance records of a Delaware company with common stock listed on the New York Stock Exchange under MX. Its 8-K reports furnish quarterly and annual financial information for continuing operations, including Power Analog Solutions and Power IC, and include exhibits describing product launches and operating highlights in power semiconductors.
The filing record also covers proxy and governance matters, including executive compensation, pay-versus-performance disclosures, board and committee changes, director compensation arrangements, and executive service or separation agreements involving the company and its Korean operating subsidiary, Magnachip Semiconductor, Ltd. These disclosures connect capital-structure, leadership and compensation matters to the company’s semiconductor operating business.
Clearline Capital reports a 4.1% passive stake in Magnachip Semiconductor Corporation. As of December 31, 2025, Clearline Capital LP, Clearline Capital LLC and Marc Majzner together report beneficial ownership of 1,461,036 shares of Magnachip common stock.
The filing calculates this 4.1% interest using 35,981,823 common shares reported as issued and outstanding as of October 31, 2025 in Magnachip’s Form 10-Q. All reported shares are held with shared voting and dispositive power, and the filers certify the investment is held in the ordinary course and not for the purpose of changing or influencing control of the company.
Magnachip Semiconductor Corp received an updated Schedule 13G indicating that institutional investor Systematic Financial Management no longer holds a reportable stake in the company. As of 12/31/2025, Systematic reports beneficial ownership of 0 shares of Magnachip common stock, representing 0.0% of the class.
The filing confirms that Systematic’s aggregate holdings in this security are now less than 5%. It also certifies that any securities referenced were acquired and held in the ordinary course of business, without the purpose or effect of changing or influencing control of Magnachip.
MagnaChip Semiconductor director Amoruso Cristiano filed an initial ownership statement reporting 3,072,779 shares of common stock held indirectly through Byreforge LLC.
The filing lists these shares as indirectly beneficially owned, with Byreforge LLC shown as the holder of record. A footnote explains that, due to his relationship with Byreforge LLC, Amoruso Cristiano may be deemed to beneficially own the shares but disclaims beneficial ownership except to the extent of any pecuniary interest.
MagnaChip Semiconductor Corp shareholder Byreforge LLC, together with Cristiano Amoruso, reports beneficial ownership of 3,072,779 shares of common stock, representing 8.5 % of the company’s outstanding common shares. All of these shares are reported with shared voting and dispositive power. On January 14, 2026, MagnaChip’s board of directors appointed Cristiano Amoruso as a director to serve until the 2026 annual meeting or until a successor is elected. He was also appointed to the board’s Audit Committee, Compensation Committee, and Nominating and Corporate Governance Committee, giving this 8.5 % holder direct representation in key oversight roles.
Magnachip Semiconductor Corporation reported that its Board of Directors appointed Cristiano Amoruso as a new director effective January 14, 2026. He will serve on the Board until the 2026 Annual Meeting of Stockholders or until a successor is chosen, and will also sit on the Audit Committee, Compensation Committee, and Nominating and Corporate Governance Committee. The company states that Amoruso will participate in its independent director compensation program under the existing Director Compensation Policy.
The company notes there have been no transactions since the beginning of its last fiscal year in which Amoruso had a direct or indirect material interest above $120,000, and there is no arrangement or understanding with any person regarding his selection as a director. On January 20, 2026, Magnachip issued a press release announcing his election, which is furnished as an exhibit to this report.
Magnachip Semiconductor Corporation reported that board member Ilbok Lee has decided to retire and resign from its Board of Directors and all related committee positions. His resignation will be effective at the company’s next scheduled board meeting on January 14, 2026.
The company states that Dr. Lee’s decision to retire is for personal reasons and is not due to any disagreement with Magnachip on its operations, policies, or practices. The filing also notes that a related press release dated January 14, 2026 is included as an exhibit.
MAGNACHIP SEMICONDUCTOR Corp insider Shin Young Park, Chief of Manufacturing, reported multiple equity transactions in company common stock. On 08/15/2025, Park acquired 30,750 shares at a stated price of $0, and on 12/31/2025, an additional 7,000 shares vested at $2.55 per share. Several transactions coded “F” on the same date reflect the issuer withholding 3,333, 2,778, 4,761, and 4,880 shares to cover tax obligations tied to earlier stock awards. After these moves, Park beneficially owns 128,201 shares directly. The filing also reports 15,375 performance-based restricted stock units, each linked to one share and vesting based on the company’s share price performance up to a target level by 01/31/2028.
Magnachip Semiconductor Corp. reported insider equity activity by its Chief Financial Officer, Shin Young Park. On 12/31/2025, the company withheld shares of common stock to cover the CFO's tax obligations arising from vesting awards. The issuer withheld 6,121 shares from a vesting of 12,508 shares originally granted on February 16, 2023, 12,234 shares from a vesting of 25,000 shares granted on June 1, 2024, and 17,977 shares from a vesting of 36,736 shares granted on June 1, 2025, each at a price of $2.55 per share. After these transactions, the reporting person beneficially owned 215,454 shares of common stock directly. These withholdings are routine administrative transactions to satisfy tax liabilities rather than open-market purchases or sales.
Magnachip Semiconductor Corp. (MX) received a new Schedule 13D filing from Byreforge LLC and its managing partner, Cristiano Amoruso, disclosing an activist equity stake. Byreforge directly owns 3,072,779 shares of common stock, representing 8.5% of Magnachip’s outstanding shares as of October 31, 2025. The filing states an aggregate purchase price of approximately $8,404,195, funded with Byreforge’s working capital.
The investors say they bought the stock because they believe it was undervalued and an attractive opportunity. They have already engaged, and expect to continue to engage, in discussions with management and the board about value creation, board representation, board composition, capital structure, and potential business combinations or asset sales. The filing emphasizes that their plans may change and that they could buy more shares, sell shares, or use derivatives or hedging strategies depending on market conditions and the company’s performance.
Magnachip Semiconductor Corp. director reports stock acquisition
A director of Magnachip Semiconductor Corp. (MX) reported acquiring 3,160 shares of common stock on 11/15/2025 at a stated price of $0.00 per share, which typically reflects a grant rather than an open-market purchase. Following this transaction, the director beneficially owns 97,843 shares of Magnachip common stock in direct ownership. This filing is a routine Form 4 disclosure of insider equity activity and does not, by itself, describe any change to the company’s operations or financial results.