Magnachip Semiconductor Corp
A designer and manufacturer of analog and mixed-signal semiconductors, Magnachip makes power-management chips used in communications, consumer, and industrial gear, and it long supplied display driver chips for smartphone and TV screens. The company was born in 2004 when the non-memory semiconductor division of Hynix Semiconductor (formerly Hyundai Electronics) was sold to a private equity firm, with roots reaching back to LG Semiconductor's 1979 start. Its name blends the Latin "magna" (great) with "chip," and it earned a reputation for "8-inch stubbornness" by keeping its specialty chips on 8-inch wafers while rivals moved to larger ones.
Sold 2.37M
Sold 58.0K
Sold 5.75M
Granted 19.49M · Sold 9.88M
Sold 3.39M
Sold 400.0K
Bought 500.0K · Sold 149.0K
Granted 28.6K
Sold 1.90M
Bought 187.2K · Sold 188.5K
Granted 7.32M · Sold 1.79M
Granted 118.3K · Bought 100.0K
Granted 964.4K · Bought 53.1K · Sold 11.8K
Granted 316.6K · Bought 88.0K
Granted 112.5K
Granted 374.7K · Bought 15.0K
Granted 262.5K · Bought 25.0K
Granted 267.4K · Bought 19.0K
Granted 104.0K · Bought 74.1K · Sold 25.0K
Granted 104.8K
Granted 219.6K · Bought 1.0K · Sold 20.0K
Granted 131.0K
Granted 114.3K · Bought 3.6K
Granted 141.1K
Sold 15.0K
Granted 7.0K
Granted 54.7K · Bought 8.0K
Granted 36.5K
Granted 45.6K
Granted 16.0K · Sold 44.3K
Granted 30.1K
Granted 21.6K · Bought 5.0K
Granted 24.7K
Granted 22.0K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Brigade Leveraged Capital Structures Fund Ltd. +3 co-filers10% owner · 62 transactions | — | 12.29Mas of Oct 2020 | — | — | 2.37M |
| Lennon Jonathan +4 co-filers10% owner · 1 transaction | — | 7.00Mas of Aug 2016 | — | — | 58.0K |
| Avenue CDP Global Opportunities Fund LP +9 co-filersDirector, 10% owner, Director, 10% owner · 3 transactions | — | 5.26Mas of Feb 2013 | — | — | 5.75M |
| Avenue Special Situations Fund IV LP +8 co-filers10% owner, Director, 10% owner · 6 transactions | — | 4.28Mas of May 2012 | 19.49M | — | 9.88M |
| Lasry Marc +6 co-filersDirector, 10% owner · 1 transaction | — | 4.09Mas of May 2015 | — | — | — |
| Engaged Capital I LP +8 co-filersSee Footnote 1 and 5, See Footnote 1, 10% owner · 2 transactions | — | 3.85Mas of Jun 2016 | — | — | — |
| Avenue CDP Global Opportunities Fund LP +5 co-filersDirector, 10% owner, Director, 10% owner · 6 transactions | — | 3.51Mas of Sep 2013 | — | — | 3.39M |
| Engaged Capital LLC +5 co-filersSee Footnote 1 · 2 transactions | — | 3.45Mas of Jan 2017 | — | — | 400.0K |
| Brigade Leveraged Capital Structures Fund Ltd.10% owner · 3 transactions | — | 3.16Mas of Dec 2018 | — | 500.0K | 149.0K |
| Amoruso CristianoDirector · 1 transaction | — | 3.10M | 28.6K | — | — |
| Avenue CDP Global Opportunities Fund LP +3 co-filersDirector, 10% owner · 3 transactions | — | 2.17Mas of May 2012 | — | — | 1.90M |
| Morgan Donald E III +2 co-filers10% owner · 14 transactions | — | 1.12Mas of Nov 2020 | — | 187.2K | 188.5K |
| Avenue CDP Global Opportunities Fund LP +6 co-filers10% owner, Director, Director, 10% owner · 6 transactions | — | 1.12Mas of Mar 2011 | 7.32M | — | 1.79M |
| Nathan Gilbert EDirector · 12 transactions | — | 592.6K | 118.3K | 100.0K | — |
| Kim Young-JoonSee Remarks, Director · 43 transactions | — | 591.0Kas of Jun 2025 | 964.4K | 53.1K | 11.8K |
| Martino CamilloSee Remarks, Director · 18 transactions | — | 404.6K | 316.6K | 88.0K | — |
| Park ShinyoungChief Financial Officer · 1 transaction | — | 328.0K | 112.5K | — | — |
| Kim Theodore SSee Remarks · 46 transactions | — | 311.2Kas of Dec 2024 | 374.7K | 15.0K | — |
| Lee IlbokDirector · 18 transactions | — | 275.0Kas of Jul 2025 | 262.5K | 25.0K | — |
| Park Shin YoungSee Remarks · 38 transactions | — | 215.5K | 267.4K | 19.0K | — |
| Nader TavakoliDirector · 19 transactions | — | 171.9Kas of Jul 2020 | 104.0K | 74.1K | 25.0K |
| Lee SeunghoonChief of Manufacturing · 13 transactions | — | 158.2K | 104.8K | — | — |
| Lee Woung MooSee Remarks · 40 transactions | — | 151.9Kas of Jun 2024 | 219.6K | 1.0K | 20.0K |
| Tanner Gary W.Director · 11 transactions | — | 131.0Kas of Jun 2023 | 131.0K | — | — |
| Keating Melvin LDirector · 9 transactions | — | 124.4Kas of Jun 2023 | 114.3K | 3.6K | — |
| Chung Kyo-Hwa LizDirector · 15 transactions | — | 100.8K | 141.1K | — | — |
| Hwang Tae YoungCOO and President · 1 transaction | — | 90.0Kas of May 2012 | — | — | 15.0K |
| Yang JinseokSee Remarks · 5 transactions | — | 73.9Kas of Mar 2025 | 7.0K | — | — |
| Kim Jonathan WSee Remarks · 5 transactions | — | 60.2Kas of Mar 2019 | 54.7K | 8.0K | — |
| Lee Tae JongSee Remarks · 4 transactions | — | 56.5Kas of Jan 2019 | 36.5K | — | — |
| Park Chan HoSee Remarks · 10 transactions | — | 43.6Kas of Dec 2023 | 45.6K | — | — |
| McFarland JohnExecutive VP, GC & Secretary · 6 transactions | — | 36.9Kas of Aug 2013 | 16.0K | — | 44.3K |
| Elkins Michael DDirector · 4 transactions | — | 30.1Kas of Aug 2016 | 30.1K | — | — |
| Klein Randal TDirector · 3 transactions | — | 26.6Kas of Jul 2018 | 21.6K | 5.0K | — |
| Woo Young SooSee Remarks · 3 transactions | — | 23.7Kas of Dec 2021 | 24.7K | — | — |
| Norby R DouglasDirector · 3 transactions | — | 22.0Kas of Mar 2016 | 22.0K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over all recorded history: -24.93M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.