As of November 6, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of MAGNACHIP SEMICONDUCTOR Corp. The largest reported stake is Byreforge LLC's, at 8.5%. 5 filings are on record since November 20, 2025 (Schedule 13D/A, January 20, 2026).
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Key facts
- · Holder: Toro 18 Holdings LLC · Percent: 4.1% · Shares: 1,500,135 · SCHEDULE 13G/A
- · Holder: Clearline Capital LP · Percent: 4.1% · SCHEDULE 13G/A
- · Holder: Systematic Financial Management LP · Percent: 0% · SCHEDULE 13G
- · Holder: Byreforge LLC · Percent: 8.5% · SCHEDULE 13D/A
- · Holder: Byreforge LLC · Percent: 8.5% · SCHEDULE 13D
MAGNACHIP SEMICONDUCTOR Corp has 5 Schedule 13D or 13G filings on record since 2025-11-20. 1 holder's latest filing reports 5% or more of common stock, par value $0.01 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| Byreforge LLC | 8.5% | 3,072,779 | SCHEDULE 13D/A, 2026-01-20 | 2026-01-14 |
| Clearline Capital LP | 4.1% | 1,461,036 | SCHEDULE 13G/A, 2026-02-17 | 2025-12-31 |
| Toro 18 Holdings LLC | 4.1% | 1,500,135 | SCHEDULE 13G/A, 2026-03-20 | 2026-03-20 |
| Systematic Financial Management LP | 0% | 0 | SCHEDULE 13G, 2026-02-11 | 2025-12-31 |
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More on MAGNACHIP SEMICONDUCTOR Corp and the records around it.
MAGNACHIP SEMICONDUCTOR Corp elsewhere on the record
- Leadership changes Jun 2026
- Who owns it
Companies that share a holder
- Clearline Capital LP also filed stake reports on 2 other companies: Xperi Inc. (Aug 2026), HERON THERAPEUTICS, INC. /DE/ (Feb 2026)
- SYSTEMATIC FINANCIAL MANAGEMENT LP also filed stake reports on 8 other companies: KVH INDUSTRIES INC \DE\ (Aug 2026), LSI INDUSTRIES INC (Aug 2026), ANGIODYNAMICS INC (Feb 2026)
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Purpose of Transaction (Item 4)
Byreforge LLC
Item 4 is hereby amended to add the following: On January 14, 2026, the Board appointed Cristiano Amoruso as a director of the Issuer to serve until the Issuer's 2026 Annual Meeting of Stockholders or until his successor has been duly elected and qualified, or until his earlier death, resignation, retirement, disqualification or removal. Mr. Amoruso has also been appointed to each of the Audit Committee, the Compensation Committee and the Nominating and Corporate Governance Committee of the Board.Item 4 of the SCHEDULE 13D/A filed 2026-01-20
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-11-20 | Byreforge LLC | 8.5% | SCHEDULE 13D |
| 2026-01-20 | Byreforge LLC | 8.5% | SCHEDULE 13D/A |
| 2026-02-11 | Systematic Financial Management LP | 0% | SCHEDULE 13G |
| 2026-02-17 | Clearline Capital LP | 4.1% | SCHEDULE 13G/A |
| 2026-03-20 | Toro 18 Holdings LLC | 4.1% | SCHEDULE 13G/A |
Questions about who owns MAGNACHIP SEMICONDUCTOR Corp
Who owns MAGNACHIP SEMICONDUCTOR Corp?
On this page, one holder's latest ownership filing reports 5% or more of MAGNACHIP SEMICONDUCTOR Corp: Byreforge LLC (8.5%, Schedule 13D/A, filed 2026-01-20).
When did Byreforge LLC buy into MAGNACHIP SEMICONDUCTOR Corp?
The filings give report dates, not purchase dates. The earliest filing from Byreforge LLC on this page is the Schedule 13D, filed 2025-11-20, reporting 8.5%; its latest, Schedule 13D/A filed 2026-01-20, reports 8.5%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 5 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for MAGNACHIP SEMICONDUCTOR Corp
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| June 30, 2026 | Leadership change: Chae Lee appointed, Chief Executive Officer, and 1 more | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.