MAGNACHIP SEMICONDUCTOR Corp (MX) · Insider trading
What MAGNACHIP SEMICONDUCTOR's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$486,760
2 insiders, 6 trades
Sold, 12 months
$0
0 insiders
Net, 12 months
+$486,760
bought less sold
Latest filing
2026-09-25
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Lee ChaeDirector, Chief Executive Officer | $318,600 | – | 3 | 2026-09-24 | 388,750 |
| Nathan Gilbert eDirector | $241,760 | – | 4 | 2026-03-16 | – |
| Martino CamilloDirector, See Remarks | $158,400 | – | 2 | 2025-08-22 | 259,127 |
| Lee IlbokDirector | $77,200 | – | 1 | 2025-03-14 | 219,181 |
| Park Shin YoungSee Remarks | $28,700 | – | 1 | 2025-08-25 | 251,786 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-24 | Lee ChaeDirector, Chief Executive Officer | Buy | 20,000 | 3.22 | $64,400 | 388,750 | Form 4 |
| 2026-09-23 | Lee ChaeDirector, Chief Executive Officer | Buy | 50,000 | 3.17 | $158,500 | 338,750 | Form 4 |
| 2026-09-23 | Lee ChaeDirector, Chief Executive Officer | Buy | 30,000 | 3.19 | $95,700 | 368,750 | Form 4 |
| 2026-03-16 | Nathan Gilbert eDirector | Buyindirect | 21,994 | 2.87 | $63,123 | 158,200 | Form 4 |
| 2026-03-13 | Nathan Gilbert eDirector | Buyindirect | 13,006 | 2.79 | $36,287 | 136,206 | Form 4 |
| 2026-03-12 | Nathan Gilbert eDirector | Buyindirect | 25,000 | 2.75 | $68,750 | 123,200 | Form 4 |
| 2025-08-25 | Park Shin YoungSee Remarks | Buy | 10,000 | 2.87 | $28,700 | 251,786 | Form 4 |
| 2025-08-22 | Martino CamilloDirector, See Remarks | Buy | 30,000 | 2.84 | $85,200 | 259,127 | Form 4 |
| 2025-03-14 | Lee IlbokDirector | Buy | 20,000 | 3.86 | $77,200 | 219,181 | Form 4 |
| 2025-03-13 | Nathan Gilbert eDirector | Buyindirect | 20,000 | 3.68 | $73,600 | 98,200 | Form 4 |
| 2025-03-13 | Martino CamilloDirector | Buyindirect | 20,000 | 3.66 | $73,200 | 40,000 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
24 × grant or award24 × shares withheld for tax1 × returned to the company
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-15 | Martino CamilloDirector | Grant or award A | +6,764 | – | 410,661 | Form 4 |
| 2026-08-01 | Amoruso CristianoDirector | Grant or award A | +46,429 | – | 75,057 | Form 4 |
| 2026-08-01 | Nathan Gilbert eDirector | Grant or award A | +51,191 | – | 265,682 | Form 4 |
| 2026-08-01 | Chung Kyo-Hwa LizDirector | Grant or award A | +48,810 | – | 149,599 | Form 4 |
| 2026-08-01 | Martino CamilloDirector | Grant or award A | +39,286 | – | 403,897 | Form 4 |
| 2026-07-01 | Lee ChaeDirector, Chief Executive Officer | Grant or award A | +288,750 | – | 288,750 | Form 4 |
| 2026-06-01 | Lee SeunghoonChief of Manufacturing | Grant or award A | +30,000 | – | 158,201 | Form 4 |
| 2026-06-01 | Park ShinyoungChief Financial Officer | Grant or award A | +112,500 | – | 327,954 | Form 4 |
| 2026-02-15 | Amoruso CristianoDirector | Grant or award A | +28,628 | – | 28,628 | Form 4 |
| 2026-02-15 | Chung Kyo-Hwa LizDirector | Grant or award A | +2,946 | – | 100,789 | Form 4 |
| 2026-02-15 | Nathan Gilbert eDirector | Grant or award A | +1,478 | – | 214,491 | Form 4 |
| 2025-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −6,121 | 2.55 | 245,665 | Form 4 |
| 2025-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −12,234 | 2.55 | 233,431 | Form 4 |
| 2025-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −17,977 | 2.55 | 215,454 | Form 4 |
| 2025-12-31 | Lee SeunghoonSee Remarks | Grant or award A | +7,000 | 2.55 | 143,953 | Form 4 |
| 2025-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −3,333 | 2.55 | 140,620 | Form 4 |
| 2025-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −2,778 | 2.55 | 137,842 | Form 4 |
| 2025-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −4,761 | 2.55 | 133,081 | Form 4 |
| 2025-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −4,880 | 2.55 | 128,201 | Form 4 |
| 2025-11-15 | Nathan Gilbert eDirector | Grant or award A | +6,320 | – | 213,013 | Form 4 |
| 2025-11-15 | Chung Kyo-Hwa LizDirector | Grant or award A | +3,160 | – | 97,843 | Form 4 |
| 2025-10-01 | Martino CamilloDirector, See Remarks | Grant or award A | +105,484 | – | 364,611 | Form 4 |
| 2025-08-15 | Lee SeunghoonSee Remarks | Grant or award A | +30,750 | – | 136,953 | Form 4 |
| 2025-07-01 | Chung Kyo-Hwa LizDirector | Grant or award A | +45,455 | – | 94,683 | Form 4 |
| 2025-07-01 | Nathan Gilbert eDirector | Grant or award A | +50,650 | – | 206,693 | Form 4 |
| 2025-07-01 | Martino CamilloDirector | Grant or award A | +53,247 | – | 229,127 | Form 4 |
| 2025-07-01 | Lee IlbokDirector | Grant or award A | +55,845 | – | 275,026 | Form 4 |
| 2025-06-15 | Chung Kyo-Hwa LizDirector | Returned to the company D | −15,814 | 3.84 | 49,228 | Form 4 |
| 2025-06-01 | Park Shin YoungSee Remarks | Grant or award A | +110,210 | – | 241,786 | Form 4 |
| 2025-06-01 | Kim Young-JoonDirector, See Remarks | Grant or award A | +164,269 | – | 590,970 | Form 4 |
| 2025-03-01 | Lee SeunghoonSee Remarks | Grant or award A | +7,000 | 4.54 | 109,379 | Form 4 |
| 2025-03-01 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −3,176 | 4.54 | 106,203 | Form 4 |
| 2025-03-01 | Yang JinseokSee Remarks | Grant or award A | +7,000 | 4.54 | 73,909 | Form 4 |
| 2025-03-01 | Yang JinseokSee Remarks | Shares withheld for tax F | −3,167 | 4.54 | 70,742 | Form 4 |
| 2024-12-31 | Yang JinseokSee Remarks | Shares withheld for tax F | −1,577 | 4.02 | 74,082 | Form 4 |
| 2024-12-31 | Yang JinseokSee Remarks | Shares withheld for tax F | −2,444 | 4.02 | 71,638 | Form 4 |
| 2024-12-31 | Yang JinseokSee Remarks | Shares withheld for tax F | −4,729 | 4.02 | 66,909 | Form 4 |
| 2024-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −2,445 | 4.02 | 149,918 | Form 4 |
| 2024-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −6,117 | 4.02 | 143,801 | Form 4 |
| 2024-12-31 | Park Shin YoungSee Remarks | Shares withheld for tax F | −12,225 | 4.02 | 131,576 | Form 4 |
| 2024-12-31 | Kim Theodore SSee Remarks | Shares withheld for tax F | −2,917 | 4.02 | 311,199 | Form 4 |
| 2024-12-31 | Kim Theodore SSee Remarks | Shares withheld for tax F | −9,249 | 4.02 | 301,950 | Form 4 |
| 2024-12-31 | Kim Theodore SSee Remarks | Shares withheld for tax F | −8,750 | 4.02 | 293,200 | Form 4 |
| 2024-12-31 | Kim Young-JoonDirector, See Remarks | Shares withheld for tax F | −5,017 | 4.02 | 652,906 | Form 4 |
| 2024-12-31 | Kim Young-JoonDirector, See Remarks | Shares withheld for tax F | −17,632 | 4.02 | 635,274 | Form 4 |
| 2024-12-31 | Kim Young-JoonDirector, See Remarks | Shares withheld for tax F | −15,517 | 4.02 | 619,757 | Form 4 |
| 2024-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −1,645 | 4.02 | 110,188 | Form 4 |
| 2024-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −2,877 | 4.02 | 107,311 | Form 4 |
| 2024-12-31 | Lee SeunghoonSee Remarks | Shares withheld for tax F | −4,932 | 4.02 | 102,379 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.