Updated Jul 16, 2026 · Last SEC filing 2026-07-06
MAGNACHIP SEMICONDUCTOR Corp (MX) has filed 3 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-06. 4 Form 8-K material event filings were reported by MX in the last 90 days. InsiderAlpha tracks every MX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Semiconductors & Related Devices (SIC 3674) |
|---|---|
| SEC CIK | 0001325702 |
| Form 4 filings (90d) | 3 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Latest Form 4 filing | 2026-07-06 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| LEE CHAE | Chief Executive Officer | A — Grant or award | 288.8K | $0.00 | — | SEC | |
| Lee Seunghoon | Chief of Manufacturing | A — Grant or award | 30.0K | $0.00 | — | SEC | |
| Park Shin Young | Chief Financial Officer | A — Grant or award | 112.5K | $0.00 | — | SEC | |
| NATHAN GILBERT E | Insider | P — Open-market purchase | 22.0K | $2.87 | $63K | SEC | |
| NATHAN GILBERT E | Insider | P — Open-market purchase | 13.0K | $2.79 | $36K | SEC | |
| NATHAN GILBERT E | Insider | P — Open-market purchase | 25.0K | $2.75 | $69K | SEC | |
| Chung Kyo-Hwa Liz | Insider | A — Grant or award | 2.9K | $0.00 | — | SEC | |
| Amoruso Cristiano | Insider | A — Grant or award | 28.6K | $0.00 | — | SEC | |
| NATHAN GILBERT E | Insider | A — Grant or award | 1.5K | $0.00 | — | SEC | |
| Lee Seunghoon | See Remarks | F — Tax withholding / forfeiture | 4.8K | $2.55 | $12K | SEC | |
| Lee Seunghoon | See Remarks | A — Grant or award | 7.0K | $2.55 | $18K | SEC | |
| Lee Seunghoon | See Remarks | F — Tax withholding / forfeiture | 3.3K | $2.55 | $8K | SEC | |
| Lee Seunghoon | See Remarks | F — Tax withholding / forfeiture | 2.8K | $2.55 | $7K | SEC | |
| Lee Seunghoon | See Remarks | F — Tax withholding / forfeiture | 4.9K | $2.55 | $12K | SEC | |
| Park Shin Young | See Remarks | F — Tax withholding / forfeiture | 6.1K | $2.55 | $16K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for MAGNACHIP SEMICONDUCTOR Corp (MX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| LEE CHAE | 2 | — |
| Park Shin Young | 1 | — |
| Lee Seunghoon | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in MX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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