Quick Takeaways
- MX - MAGNACHIP SEMICONDUCTOR Corp has 15 insiders with reported activity on this page.
- Net insider value flow over the last year: +$281,944.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 15 Insiders of MAGNACHIP SEMICONDUCTOR Corp
- Symbol
- MX on NYSE
- Location
- Cheongju Si
What Changed
- Buy value: $281,944; sell value: $0.
- Net share flow: +100,000.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to buying over the last 12 months. Net value: +$281,944.
Buys
$281,944
Shares: 100,000
Insiders: 3
Sells
$0
Shares: 0
Insiders: 0
Net
+$281,944
Shares: +100,000
Insiders: 3
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 60,000 | 0 | $167,974 | $0 | +$167,974 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 40,000 | 0 | $113,970 | $0 | +$113,970 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
MAGNACHIP SEMICONDUCTOR Corp executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Cristiano Amoruso | Director | $7,908,587 | Mixed | 15 Feb 2026 | ||
| Young-Joon Kim | Director and Chief Executive Officer, Director | $3,263,662 | Mixed | 01 Jun 2025 | ||
| Theodore S. Kim | Chief Compliance Officer, General Counsel and Secretary | $1,555,914 | Mixed | 31 Dec 2024 | ||
| Camillo Martino | Chairman and CEO, Director | $1,193,602 | +$85,290 | +7.7% | Mixed | 01 Oct 2025 |
| Gilbert E. Nathan | Director | $1,086,452 | +$167,974 | +18% | Mixed | 16 Mar 2026 |
| Gary W. Tanner | Director | $982,568 | Mixed | 01 Jun 2023 | ||
| Melvin L. Keating | Director | $933,338 | Mixed | 01 Jun 2023 | ||
| Shin Young Park | Chief Financial Officer | $926,657 | +$28,680 | +3.2% | Mixed | 31 Dec 2025 |
| Ilbok Lee | Director | $893,834 | Mixed | 01 Jul 2025 | ||
| Woung Moo Lee | General Manager of Mixed Signal Solutions | $809,342 | Mixed | 01 Jun 2024 | ||
| Seunghoon Lee | Chief of Manufacturing | $372,182 | Mixed | 15 Aug 2025 | ||
| Jinseok Yang | Acting Co-General Manager of Mixed-Signal Solutions | $321,169 | Mixed | 01 Mar 2025 | ||
| Chan Ho Park | General Manager of Power Analog Solutions | $315,090 | Mixed | 31 Dec 2023 | ||
| Kyo-Hwa Liz Chung | Director | $257,011 | Mixed | 15 Feb 2026 | ||
| Young Soo Woo | Officer | $177,728 | Mixed | 31 Dec 2021 |
Top shareholders of MAGNACHIP SEMICONDUCTOR Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| TORO 18 HOLDINGS LLC |
13D/G
|
— |
8%
|
2,970,139
|
$9,652,952 | $0 | 23 Dec 2024 | |
| OAKTREE CAPITAL MANAGEMENT LP |
13F
|
Company |
7.8%
|
2,849,858
|
$7,979,602 | — | 31 Mar 2026 | |
| Cristiano Amoruso |
3/4/5
|
Director |
8.5%
|
3,101,407
|
$7,908,587 | — | 15 Feb 2026 | |
| Byreforge LLC |
13D/G
|
— |
8.5%
|
3,072,779
|
$7,835,586 | $0 | 14 Jan 2026 | |
| FourWorld Capital Management LLC |
13F
|
Company |
4.5%
|
1,657,701
|
$4,641,563 | — | 31 Mar 2026 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
4.3%
|
1,583,589
|
$4,434,049 | — | 31 Mar 2026 | |
| IMMERSION CORP |
13D/G
13F
|
TORO 18 HOLDINGS LLC · Company |
4.1%
|
1,500,135
|
$4,350,392 | $0 | 20 Mar 2026 | |
| Clearline Capital LP |
13D/G
13F
|
Company |
4.1%
|
1,461,036
|
$3,725,642 | -$1,119,807 | 31 Dec 2025 | |
| MARSHALL WACE, LLP |
13F
|
Company |
3.4%
|
1,244,622
|
$3,484,939 | — | 31 Mar 2026 | |
| Young-Joon Kim |
3/4/5
|
Director and Chief Executive Officer, Director |
—
mixed-class rows
|
755,239
mixed-class rows
|
$3,263,662 | — | 01 Jun 2025 | |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC |
13F
|
Company |
2%
|
743,953
|
$2,083,068 | — | 31 Mar 2026 | |
| Cygnus Capital Advisors, LLC |
13F
|
Company |
2%
|
733,954
|
$2,055,000 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
1.9%
|
710,444
|
$1,989,243 | — | 31 Mar 2026 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
1.8%
|
646,684
|
$1,802,000 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.6%
|
571,834
|
$1,601,135 | — | 31 Mar 2026 | |
| STATE OF WISCONSIN INVESTMENT BOARD |
13F
|
Company |
1.5%
|
557,617
|
$1,561,328 | — | 31 Mar 2026 | |
| Theodore S. Kim |
3/4/5
|
Chief Compliance Officer, General Counsel and Secretary |
—
mixed-class rows
|
368,200
mixed-class rows
|
$1,555,914 | — | 31 Dec 2024 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
1.5%
|
549,106
|
$1,537,200 | — | 31 Mar 2026 | |
| Camillo Martino |
3/4/5
|
Chairman and CEO, Director |
1.1%
|
404,611
|
$1,193,602 | +$85,290 | 01 Oct 2025 | |
| PRELUDE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
1.1%
|
403,627
|
$1,130,156 | — | 31 Mar 2026 | |
| Gilbert E. Nathan |
3/4/5
|
Director |
1%
|
376,456
|
$1,086,452 | +$167,974 | 16 Mar 2026 | |
| Potomac Capital Management, Inc. |
13F
|
Company |
1%
|
365,000
|
$1,022,000 | — | 31 Mar 2026 | |
| Gary W. Tanner |
3/4/5
|
Director |
—
class O/S missing
|
131,009
|
$982,568 | — | 01 Jun 2023 | |
| Melvin L. Keating |
3/4/5
|
Director |
—
class O/S missing
|
124,445
|
$933,338 | — | 01 Jun 2023 | |
| Shin Young Park |
3/4/5
|
Chief Financial Officer |
—
mixed-class rows
|
270,558
mixed-class rows
|
$926,657 | +$28,680 | 31 Dec 2025 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.9%
|
329,368
|
$922,230 | — | 31 Mar 2026 | |
| Ilbok Lee |
3/4/5
|
Director |
0.75%
|
275,026
|
$893,834 | — | 01 Jul 2025 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.8%
|
292,940
|
$820,232 | — | 31 Mar 2026 | |
| Woung Moo Lee |
3/4/5
|
General Manager of Mixed Signal Solutions |
—
mixed-class rows
|
160,903
mixed-class rows
|
$809,342 | — | 01 Jun 2024 | |
| GSA CAPITAL PARTNERS LLP |
13F
|
Company |
0.77%
|
280,659
|
$786,000 | — | 31 Mar 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
|
Company |
0.66%
|
239,694
|
$671,143 | — | 31 Mar 2026 | |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC |
13F
|
Company |
0.64%
|
233,895
|
$654,906 | — | 31 Mar 2026 | |
| SILVERBACK ASSET MANAGEMENT LLC |
13F
|
Company |
0.6%
|
220,000
|
$616,000 | — | 31 Mar 2026 | |
| ODDO BHF ASSET MANAGEMENT SAS |
13F
|
Company |
0.59%
|
215,098
|
$602,274 | — | 31 Mar 2026 | |
| BlackRock, Inc. |
13F
|
Company |
0.57%
|
208,592
|
$584,057 | — | 31 Mar 2026 | |
| BOOTHBAY FUND MANAGEMENT, LLC |
13F
|
Company |
0.57%
|
207,206
|
$580,177 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.55%
|
200,643
|
$561,800 | — | 31 Mar 2026 | |
| Steward Partners Investment Advisory, LLC |
13F
|
Company |
0.54%
|
197,002
|
$551,606 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.5%
|
183,446
|
$513,649 | — | 31 Mar 2026 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.44%
|
159,606
|
$446,897 | — | 31 Mar 2026 | |
| Seunghoon Lee |
3/4/5
|
Chief of Manufacturing |
—
mixed-class rows
|
143,576
mixed-class rows
|
$372,182 | — | 15 Aug 2025 | |
| FAIRFAX FINANCIAL HOLDINGS LTD/ CAN |
13F
|
Company |
0.34%
|
125,000
|
$348,750 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.35%
|
126,326
|
$341,080 | — | 31 Mar 2026 | |
| GABELLI FUNDS LLC |
13F
|
Company |
0.32%
|
116,802
|
$327,046 | — | 31 Mar 2026 | |
| Jinseok Yang |
3/4/5
|
Acting Co-General Manager of Mixed-Signal Solutions |
—
class O/S missing
|
70,742
|
$321,169 | — | 01 Mar 2025 | |
| Chan Ho Park |
3/4/5
|
General Manager of Power Analog Solutions |
—
class O/S missing
|
42,012
|
$315,090 | — | 31 Dec 2023 | |
| Yakira Capital Management, Inc. |
13F
|
Company |
0.27%
|
98,000
|
$274,400 | — | 31 Mar 2026 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.26%
|
96,720
|
$270,816 | — | 31 Mar 2026 | |
| Point72 Asset Management, L.P. |
13F
|
Company |
0.26%
|
94,209
|
$263,785 | — | 31 Mar 2026 | |
| Kyo-Hwa Liz Chung |
3/4/5
|
Director |
0.28%
|
100,789
|
$257,011 | — | 15 Feb 2026 |
Recent Insider Transactions by Companies or Individuals for MAGNACHIP SEMICONDUCTOR Corp
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Gilbert E. Nathan | MX | Common Stock | Purchase | 16.2% | $63,050 | $2.87 | 21,994 | 158,200 | 16 Mar 2026 | By GT Investments II Corp |
| Gilbert E. Nathan | MX | Common Stock | Purchase | 10.6% | $36,249 | $2.79 | 13,006 | 136,206 | 13 Mar 2026 | By GT Investments II Corp |
| Gilbert E. Nathan | MX | Common Stock | Purchase | 25.5% | $68,675 | $2.75 | 25,000 | 123,200 | 12 Mar 2026 | By GT Investments II Corp |
| Gilbert E. Nathan | MX | Common Stock | Award | 0.69% | 1,478 | 214,491 | 15 Feb 2026 | Direct | ||
| Kyo-Hwa Liz Chung | MX | Common Stock | Award | 3.01% | 2,946 | 100,789 | 15 Feb 2026 | Direct | ||
| Cristiano Amoruso | MX | Common Stock | Award | 28,628 | 28,628 | 15 Feb 2026 | Direct | |||
| Seunghoon Lee | MX | Common Stock | Tax liability | -10.9% | -15,752 | 128,201 | 31 Dec 2025 | Direct | ||
| Seunghoon Lee | MX | Common Stock | Award | 5.11% | 7,000 | 143,953 | 31 Dec 2025 | Direct | ||
| Shin Young Park | MX | Common Stock | Tax liability | -14.4% | -36,332 | 215,454 | 31 Dec 2025 | Direct | ||
| Kyo-Hwa Liz Chung | MX | Common Stock | Award | 3.34% | 3,160 | 97,843 | 15 Nov 2025 | Direct | ||
| Gilbert E. Nathan | MX | Common Stock | Award | 3.06% | 6,320 | 213,013 | 15 Nov 2025 | Direct | ||
| Camillo Martino | MX | Common Stock | Award | 40.7% | 105,484 | 364,611 | 01 Oct 2025 | Direct | ||
| Shin Young Park | MX | Common Stock | Purchase | 4.14% | $28,680 | $2.87 | 10,000 | 251,786 | 25 Aug 2025 | Direct |
| Camillo Martino | MX | Common Stock | Purchase | 13.1% | $85,290 | $2.84 | 30,000 | 259,127 | 22 Aug 2025 | Direct |
| Seunghoon Lee | MX | Common Stock | Award | 29% | 30,750 | 136,953 | 15 Aug 2025 | Direct | ||
| Seunghoon Lee | MX | Performance-Based Restricted Stock Units | Award | 15,375 | 15,375 | 15 Aug 2025 | Direct | |||
| Ilbok Lee | MX | Common Stock | Award | 25.5% | 55,845 | 275,026 | 01 Jul 2025 | Direct | ||
| Camillo Martino | MX | Common Stock | Award | 30.3% | 53,247 | 229,127 | 01 Jul 2025 | Direct | ||
| Gilbert E. Nathan | MX | Common Stock | Award | 32.5% | 50,650 | 206,693 | 01 Jul 2025 | Direct | ||
| Kyo-Hwa Liz Chung | MX | Common Stock | Award | 92.3% | 45,455 | 94,683 | 01 Jul 2025 | Direct | ||
| Kyo-Hwa Liz Chung | MX | Common Stock | Disposed to Issuer | -24.3% | -15,814 | 49,228 | 15 Jun 2025 | Direct | ||
| Young-Joon Kim | MX | Common Stock | Award | 38.5% | 164,269 | 590,970 | 01 Jun 2025 | Direct | ||
| Young-Joon Kim | MX | Performance-Based Restricted Stock Units | Award | 164,269 | 164,269 | 01 Jun 2025 | Direct | |||
| Shin Young Park | MX | Common Stock | Award | 83.8% | 110,210 | 241,786 | 01 Jun 2025 | Direct | ||
| Shin Young Park | MX | Performance-Based Restricted Stock Units | Award | 55,104 | 55,104 | 01 Jun 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.