MX (Magnachip Semiconductor Corp.)
Insider Trading Activity
Every open-market purchase and sale reported by MX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | CAMILLO MARTINO | Director | A | — | — |
| 2026-08-03 | CAMILLO MARTINO | Director | A | — | — |
| 2026-08-03 | Kyo-Hwa Liz Chung | Director | A | — | — |
| 2026-08-03 | Cristiano Amoruso | Director | A | — | — |
| 2026-08-03 | GILBERT E NATHAN | Director | A | — | — |
| 2026-07-06 | CHAE LEE | Chief Executive Officer | A | — | — |
| 2026-06-03 | Shinyoung Park | Chief Financial Officer | A | — | — |
| 2026-06-03 | Seunghoon Lee | Chief of Manufacturing | A | — | — |
| 2026-03-17 | GILBERT E NATHAN | Director | Buy | — | — |
| 2026-03-16 | GILBERT E NATHAN | Director | Buy | — | — |
| 2026-02-17 | Kyo-Hwa Liz Chung | Director | A | — | — |
| 2026-02-17 | GILBERT E NATHAN | Director | A | — | — |
| 2026-02-17 | Cristiano Amoruso | Director | A | — | — |
| 2026-01-02 | Shin Young Park | See Remarks | F | — | — |
| 2026-01-02 | Seunghoon Lee | See Remarks | MIXED | — | — |
| 2025-11-17 | Kyo-Hwa Liz Chung | Director | A | — | — |
| 2025-11-17 | GILBERT E NATHAN | Director | A | — | — |
| 2025-10-03 | CAMILLO MARTINO | See Remarks | A | — | — |
| 2025-08-26 | Shin Young Park | See Remarks | Buy | — | — |
| 2025-08-26 | CAMILLO MARTINO | See Remarks | Buy | — | — |
| 2025-07-03 | Kyo-Hwa Liz Chung | Director | A | — | — |
| 2025-07-03 | GILBERT E NATHAN | Director | A | — | — |
| 2025-07-03 | CAMILLO MARTINO | Director | A | — | — |
| 2025-07-03 | Ilbok Lee | Director | A | — | — |
| 2025-06-17 | Kyo-Hwa Liz Chung | Director | D | — | — |
| 2025-06-03 | Shin Young Park | See Remarks | A | — | — |
| 2025-06-03 | Young-Joon Kim | See Remarks | A | — | — |
| 2025-03-18 | Ilbok Lee | Director | Buy | — | — |
| 2025-03-17 | CAMILLO MARTINO | Director | Buy | — | — |
| 2025-03-17 | GILBERT E NATHAN | Director | Buy | — | — |
| 2025-03-04 | Jinseok Yang | See Remarks | MIXED | — | — |
| 2025-03-04 | Seunghoon Lee | See Remarks | MIXED | — | — |
| 2025-01-03 | Theodore S Kim | See Remarks | F | — | — |
| 2025-01-03 | Shin Young Park | See Remarks | F | — | — |
| 2025-01-03 | Seunghoon Lee | See Remarks | F | — | — |
| 2025-01-03 | Jinseok Yang | See Remarks | F | — | — |
| 2025-01-03 | Young-Joon Kim | See Remarks | F | — | — |
| 2024-07-11 | Seunghoon Lee | See Remarks | A | — | — |
| 2024-06-18 | Ilbok Lee | Director | A | — | — |
| 2024-06-18 | Kyo-Hwa Liz Chung | Director | A | — | — |
| 2024-06-18 | CAMILLO MARTINO | Director | A | — | — |
| 2024-06-18 | GILBERT E NATHAN | Director | A | — | — |
| 2024-06-13 | Woung Moo Lee | See Remarks | A | — | — |
| 2024-06-13 | Young-Joon Kim | See Remarks | A | — | — |
| 2024-06-13 | Shin Young Park | See Remarks | A | — | — |
| 2024-06-13 | Theodore S Kim | See Remarks | A | — | — |
| 2024-06-13 | Seunghoon Lee | See Remarks | A | — | — |
| 2024-06-04 | Kyo-Hwa Liz Chung | Director | D | — | — |
| 2024-03-13 | Shin Young Park | See Remarks | Buy | — | — |
| 2024-03-13 | Theodore S Kim | See Remarks | Buy | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 10,844,551 | — |
| — | Director | 5,955,952 | — |
| — | 10%+ Owner | 4,569,198 | — |
| — | 10%+ Owner | 3,472,515 | — |
| — | 10%+ Owner | 3,369,088 | — |
| — | Director | 3,365,339 | — |
| — | Director | 3,147,836 | — |
| — | — | 3,105,124 | — |
| — | 10%+ Owner | 2,931,088 | — |
| — | 10%+ Owner | 2,662,675 | — |
| — | Director | 2,491,798 | — |
| — | 10%+ Owner | 2,344,088 | — |
| — | Director | 732,051 | — |
| — | See Remarks | 590,970 | — |
| — | See Remarks | 450,661 | — |
| — | — | 400,000 | — |
| — | Chief Financial Officer | 327,954 | — |
| — | See Remarks | 301,950 | — |
| — | Chief Executive Officer | 288,750 | — |
| — | Director | 275,026 | — |
| — | Director | 267,372 | — |
| — | Director | 171,889 | — |
| — | Chief of Manufacturing | 158,201 | — |
| — | See Remarks | 151,903 | — |
| — | Director | 149,599 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MX quote page; the site-wide leaderboard is on the insider transactions hub.