Magnachip Semiconductor's top three insider shareholders as of August 04, 2026 are Young-Joon Kim (Director And Ceo, 590.97K shares), Theodore S Kim (Officer, 293.20K shares), Ilbok Lee (Director, 275.03K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Young-Joon Kim | Director And Ceo | 590,970 | 0 | 590,970 | 25.6% | 03 Jun, 2025 |
| 2 | Theodore S Kim | Officer | 293,200 | 0 | 293,200 | 12.7% | 03 Jan, 2025 |
| 3 | Ilbok Lee | Director | 275,026 | 0 | 275,026 | 11.9% | 03 Jul, 2025 |
| 4 | Shin Young Park | Chief Financial Officer (4) | 215,454 | 0 | 215,454 | 9.3% | 02 Jan, 2026 |
| 5 | Gilbert E Nathan | Director | 0 | 158,200 | 158,200 | 6.8% | 17 Mar, 2026 |
| 6 | Woung Moo Lee | Officer | 151,903 | 0 | 151,903 | 6.6% | 13 Jun, 2024 |
| 7 | Gary W. Tanner | Director | 131,009 | 0 | 131,009 | 5.7% | 05 Jun, 2023 |
| 8 | Melvin L Keating | Director | 124,445 | 0 | 124,445 | 5.4% | 05 Jun, 2023 |
| 9 | Seunghoon Lee | Officer | 106,203 | 0 | 106,203 | 4.6% | 04 Mar, 2025 |
| 10 | Kyo-Hwa Liz Chung | Director | 100,789 | 0 | 100,789 | 4.4% | 17 Feb, 2026 |
| 11 | Jinseok Yang | Officer | 70,742 | 0 | 70,742 | 3.1% | 04 Mar, 2025 |
| 12 | Chan Ho Park | Officer | 42,012 | 0 | 42,012 | 1.8% | 03 Jan, 2024 |
| 13 | Cristiano Amoruso | Director | 28,628 | 0 | 28,628 | 1.2% | 17 Feb, 2026 |
| 14 | Young Soo Woo | Officer | 23,697 | 0 | 23,697 | 1.0% | 04 Jan, 2022 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 16 Mar, 2026 | Gilbert E Nathan | Director | Acquired P | 21,994 | $2.87 | $63.05K | 158,200 | Indirect |
| 12 Mar, 2026 | Gilbert E Nathan | Director | Acquired P | 25,000 | $2.75 | $68.68K | 123,200 | Indirect |
| 13 Mar, 2026 | Gilbert E Nathan | Director | Acquired P | 13,006 | $2.79 | $36.25K | 136,206 | Indirect |
| 15 Feb, 2026 | Cristiano Amoruso | Director | Acquired A | 28,628 | $0.00 | $0 | 28,628 | Direct |
| 15 Feb, 2026 | Kyo-Hwa Liz Chung | Director | Acquired A | 2,946 | $0.00 | $0 | 100,789 | Direct |
| 15 Feb, 2026 | Gilbert E Nathan | Director | Acquired A | 1,478 | $0.00 | $0 | 214,491 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 6,121 | $2.55 | $15.61K | 245,665 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 6,121 | $2.55 | $15.61K | 245,665 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 6,121 | $2.55 | $15.61K | 245,665 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 12,234 | $2.55 | $31.20K | 233,431 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 12,234 | $2.55 | $31.20K | 233,431 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 12,234 | $2.55 | $31.20K | 233,431 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 17,977 | $2.55 | $45.84K | 215,454 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 17,977 | $2.55 | $45.84K | 215,454 | Direct |
| 31 Dec, 2025 | Shin Young Park | Officer | Disposed F | 17,977 | $2.55 | $45.84K | 215,454 | Direct |
| 15 Nov, 2025 | Gilbert E Nathan | Director | Acquired A | 6,320 | $0.00 | $0 | 213,013 | Direct |
| 15 Nov, 2025 | Kyo-Hwa Liz Chung | Director | Acquired A | 3,160 | $0.00 | $0 | 97,843 | Direct |
| 25 Aug, 2025 | Shin Young Park | Officer | Acquired P | 10,000 | $2.87 | $28.68K | 251,786 | Direct |
| 25 Aug, 2025 | Shin Young Park | Officer | Acquired P | 10,000 | $2.87 | $28.68K | 251,786 | Direct |
| 25 Aug, 2025 | Shin Young Park | Officer | Acquired P | 10,000 | $2.87 | $28.68K | 251,786 | Direct |