AMKR
AMKOR TECHNOLOGY, INC.
Semiconductors & Related DevicesNasdaqLarge accelerated filer
Total Trades
151
Buys
7
Sells
85
Largest Trade
N/A
Insiders
18
Institutional Funds
382
Inst. Value
$1M+
Activist Filings
9
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Rutten Guillaume Marie Jean | President and CEO | EXERCISE | $100K–$500K | 15K | $10.85 | Feb 26, 2024 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 7K | $3.72 | Feb 21, 2024 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $30.34 | Feb 21, 2024 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $32.00 | Jan 23, 2024 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Jan 23, 2024 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Nov 20, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $26.19 | Nov 20, 2023 |
| ROGERS MARK N | EVP & General Coun… | SELL | $100K–$500K | 5K | $23.84 | Nov 3, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $22.52 | Oct 24, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Oct 24, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Sep 19, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $22.68 | Sep 19, 2023 |
| KIM JAMES J | Director | SELL | $1M+ | 10.0M | $23.22 | Sep 8, 2023 |
| KIM AGNES C | Insider | SELL | $1M+ | 10.0M | $23.22 | Sep 8, 2023 |
| 915 Investments, LP | Insider | SELL | $1M+ | 10.0M | $23.22 | Sep 8, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $24.79 | Aug 22, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Aug 22, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Jul 25, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $28.41 | Jul 25, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $26.38 | Jun 20, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Jun 20, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $26.55 | Jun 13, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | Jun 13, 2023 |
| Engel Kevin | Executive Vice Pre… | SELL | $50K–$100K | 4K | $25.42 | Jun 6, 2023 |
| Shin Sung | Executive Vice Pre… | SELL | $100K–$500K | 5K | $24.93 | Jun 5, 2023 |
| Faust Megan | CFO | SELL | $50K–$100K | 3K | $22.66 | May 25, 2023 |
| Faust Megan | CFO | EXERCISE | $15K–$50K | 3K | $9.48 | May 25, 2023 |
| Faust Megan | CFO | EXERCISE | $50K–$100K | 6K | $9.48 | Apr 21, 2023 |
| Faust Megan | CFO | SELL | $100K–$500K | 6K | $23.29 | Apr 21, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | SELL | $500K+ | 30K | $23.92 | Apr 19, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | EXERCISE | $100K–$500K | 15K | $12.61 | Apr 19, 2023 |
| Faust Megan | CFO | SELL | $100K–$500K | 6K | $24.08 | Mar 17, 2023 |
| Faust Megan | CFO | EXERCISE | $50K–$100K | 6K | $9.48 | Mar 17, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | EXERCISE | $100K–$500K | 15K | $12.61 | Mar 17, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | SELL | $500K+ | 30K | $24.19 | Mar 17, 2023 |
| Tily Gil C. | Director | EXERCISE | $100K–$500K | 20K | $9.82 | Mar 1, 2023 |
| Tily Gil C. | Director | SELL | $500K+ | 20K | $25.81 | Mar 1, 2023 |
| Engel Kevin | Executive Vice Pre… | EXERCISE | $50K–$100K | 7K | $8.24 | Feb 25, 2023 |
| Engel Kevin | Executive Vice Pre… | GRANT | N/A | 18K | — | Feb 25, 2023 |
| Engel Kevin | Executive Vice Pre… | SELL | $100K–$500K | 14K | $25.26 | Feb 25, 2023 |
| KIM SUSAN Y | Director | SELL | $1M+ | 1.9M | $25.28 | Feb 25, 2023 |
| KIM JOHN T | 10% Owner | SELL | $1M+ | 1.9M | $25.28 | Feb 25, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | SELL | $500K+ | 30K | $26.97 | Feb 17, 2023 |
| Rutten Guillaume Marie Jean | President and CEO | EXERCISE | $100K–$500K | 15K | $12.61 | Feb 17, 2023 |
| Haghighi Farshad | Executive Vice Pre… | SELL | $100K–$500K | 6K | $26.89 | Feb 17, 2023 |
| Haghighi Farshad | Executive Vice Pre… | EXERCISE | $50K–$100K | 6K | $9.48 | Feb 17, 2023 |
| Faust Megan | CFO | EXERCISE | $50K–$100K | 6K | $9.48 | Feb 17, 2023 |
| Faust Megan | CFO | SELL | $100K–$500K | 6K | $27.03 | Feb 17, 2023 |
| CHURCHILL WINSTON J | Director | EXERCISE | $100K–$500K | 20K | $8.51 | Feb 17, 2023 |
| CHURCHILL WINSTON J | Director | SELL | $500K+ | 20K | $27.29 | Feb 17, 2023 |
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Institutional Ownership
13F filings as of Dec 31, 2025 · 382 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 12.2M | $1M+ | SH |
| EARNEST PARTNERS LLC | 3.8M | $1M+ | SH |
| AMERICAN CENTURY COMPANIES INC | 3.6M | $1M+ | SH |
| STATE STREET CORP | 3.5M | $1M+ | SH |
| Point72 Asset Management, L.P. | 3.1M | $1M+ | SH |
| LSV ASSET MANAGEMENT | 2.8M | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 2.7M | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.1M | $1M+ | SH |
| Fisher Asset Management, LLC | 2.1M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8M | $1M+ | SH |
| NORGES BANK | 1.4M | $1M+ | SH |
| PEAK6 LLC | 1.1M | $1M+ | SH (Call) |
| SEGALL BRYANT & HAMILL, LLC | 898K | $1M+ | SH |
| Allianz Asset Management GmbH | 862K | $1M+ | SH |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 794K | $1M+ | SH |
| ENVESTNET ASSET MANAGEMENT INC | 720K | $1M+ | SH |
| SG Americas Securities, LLC | 700K | $1M+ | SH |
| Bandera Partners LLC | 694K | $1M+ | SH |
| Ardmore Road Asset Management LP | 469K | $1M+ | SH |
| ROYCE & ASSOCIATES LP | 452K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13D/A · Feb 17, 2026
0.2%
512K shares
SC 13D/A · May 16, 2025
0.2%
522K shares
SC 13G/A · Jul 8, 2024
4.9%
12.1M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
6.0%
14.8M shares
SC 13G/A · Jan 29, 2024
6.1%
14.9M shares
SC 13D/A · Sep 9, 2023
0.403 shares
Dimensional Fund Advisors LP 30-0447847
SC 13G/A · Feb 10, 2023
6.4%
15.7M shares
SC 13G · Feb 3, 2023
5.4%
13.2M shares
SC 13D/A · Jan 4, 2022
0.518 shares