MX · Insider Trading
Magnachip Semiconductor Corp.
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.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-25 | Chae Lee | Chief Executive Officer | Buy | +100,000 | +$318.50K |
| 2026-08-18 | Camillo Martino | Director | A | +6,764 | — |
| 2026-08-03 | Camillo Martino | Director | A | +39,286 | — |
| 2026-08-03 | Kyo-Hwa Liz Chung | Director | A | +48,810 | — |
| 2026-08-03 | Cristiano Amoruso | Director | A | +46,429 | — |
| 2026-08-03 | Gilbert E Nathan | Director | A | +51,191 | — |
| 2026-07-06 | Chae Lee | Chief Executive Officer | A | +288,750 | — |
| 2026-06-03 | Shinyoung Park | Chief Financial Officer | A | +112,500 | — |
| 2026-06-03 | Seunghoon Lee | Chief of Manufacturing | A | +30,000 | — |
| 2026-03-17 | Gilbert E Nathan | Director | Buy | +21,994 | +$63.05K |
| 2026-03-16 | Gilbert E Nathan | Director | Buy | +38,006 | +$104.92K |
| 2026-02-17 | Kyo-Hwa Liz Chung | Director | A | +2,946 | — |
| 2026-02-17 | Gilbert E Nathan | Director | A | +1,478 | — |
| 2026-02-17 | Cristiano Amoruso | Director | A | +28,628 | — |
| 2026-01-02 | Shin Young Park | See Remarks | F | −36,332 | −$92.65K |
| 2026-01-02 | Seunghoon Lee | See Remarks | MIXED | +21,998 | −$22.32K |
| 2025-11-17 | Kyo-Hwa Liz Chung | Director | A | +3,160 | — |
| 2025-11-17 | Gilbert E Nathan | Director | A | +6,320 | — |
| 2025-10-03 | Camillo Martino | See Remarks | A | +105,484 | — |
| 2025-08-26 | Shin Young Park | See Remarks | Buy | +10,000 | +$28.68K |
| 2025-08-26 | Camillo Martino | See Remarks | Buy | +30,000 | +$85.29K |
| 2025-07-03 | Kyo-Hwa Liz Chung | Director | A | +45,455 | — |
| 2025-07-03 | Gilbert E Nathan | Director | A | +50,650 | — |
| 2025-07-03 | Camillo Martino | Director | A | +53,247 | — |
| 2025-07-03 | Ilbok Lee | Director | A | +55,845 | — |
| 2025-06-17 | Kyo-Hwa Liz Chung | Director | D | −15,814 | −$60.73K |
| 2025-06-03 | Shin Young Park | See Remarks | A | +110,210 | — |
| 2025-06-03 | Young-Joon Kim | See Remarks | A | +164,269 | — |
| 2025-03-18 | Ilbok Lee | Director | Buy | +20,000 | +$77.18K |
| 2025-03-17 | Camillo Martino | Director | Buy | +20,000 | +$73.12K |
| 2025-03-17 | Gilbert E Nathan | Director | Buy | +20,000 | +$73.59K |
| 2025-03-04 | Jinseok Yang | See Remarks | MIXED | +3,833 | +$17.40K |
| 2025-03-04 | Seunghoon Lee | See Remarks | MIXED | +3,824 | +$17.36K |
| 2025-01-03 | Theodore S Kim | See Remarks | F | −20,916 | −$84.08K |
| 2025-01-03 | Shin Young Park | See Remarks | F | −20,787 | −$83.56K |
| 2025-01-03 | Seunghoon Lee | See Remarks | F | −9,454 | −$38.01K |
| 2025-01-03 | Jinseok Yang | See Remarks | F | −8,750 | −$35.17K |
| 2025-01-03 | Young-Joon Kim | See Remarks | F | −38,166 | −$153.43K |
| 2024-07-11 | Seunghoon Lee | See Remarks | A | +30,000 | — |
| 2024-06-18 | Ilbok Lee | Director | A | +43,173 | — |
| 2024-06-18 | Kyo-Hwa Liz Chung | Director | A | +35,141 | — |
| 2024-06-18 | Camillo Martino | Director | A | +41,165 | — |
| 2024-06-18 | Gilbert E Nathan | Director | A | +39,157 | — |
| 2024-06-13 | Woung Moo Lee | See Remarks | A | +30,000 | — |
| 2024-06-13 | Young-Joon Kim | See Remarks | A | +133,000 | — |
| 2024-06-13 | Shin Young Park | See Remarks | A | +75,000 | — |
| 2024-06-13 | Theodore S Kim | See Remarks | A | +75,000 | — |
| 2024-06-13 | Seunghoon Lee | See Remarks | A | +30,000 | — |
| 2024-06-04 | Kyo-Hwa Liz Chung | Director | D | −8,343 | −$41.97K |
| 2024-03-13 | Shin Young Park | See Remarks | Buy | +9,000 | +$50.04K |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Cristiano Amoruso | Director | 3,147,836 | $7.68M |
| Young-Joon Kim | See Remarks | 590,970 | $1.44M |
| Camillo Martino | See Remarks | 450,661 | $1.10M |
| Chae Lee | Chief Executive Officer | 338,750 | $826.55K |
| Shinyoung Park | Chief Financial Officer | 327,954 | $800.21K |
| Theodore S Kim | See Remarks | 301,950 | $736.76K |
| Ilbok Lee | Director | 275,026 | $671.06K |
| Gilbert E Nathan | Director | 267,372 | $652.39K |
| Seunghoon Lee | Chief of Manufacturing | 158,201 | $386.01K |
| Kyo-Hwa Liz Chung | Director | 149,599 | $365.02K |
| Jinseok Yang | See Remarks | 70,742 | $172.61K |
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.
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.