AMKR
AMKOR TECHNOLOGY, INC.
NASDAQ · Technology · Semiconductors · US
$41.89
+0.17%0
Insider buys (3m)
8
Insider sells (3m)
-$2.5M
Net value (3m)
-32.1%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Oct 15, 2026 | Faust Megan · officer: CFO | Sale | 1,000 | $47 |
| Oct 6, 2026 | ALEXANDER DOUGLAS A · director | M-Exempt | 5,000 | $8.51 |
| Oct 6, 2026 | ALEXANDER DOUGLAS A · director | Sale | 5,000 | $55 |
| Sep 24, 2026 | Carolin Roger Anthony · director | A-Award | 13 | $0.00 |
| Sep 24, 2026 | Liao Daniel JL · director | A-Award | 15 | $0.00 |
| Sep 24, 2026 | ALEXANDER DOUGLAS A · director | A-Award | 13 | $0.00 |
| Sep 24, 2026 | Liao Daniel JL · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | CHURCHILL WINSTON J · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | Morse Robert Randolph · director | A-Award | 15 | $0.00 |
| Sep 24, 2026 | Morse Robert Randolph · director | A-Award | 13 | $0.00 |
| Sep 24, 2026 | ALEXANDER DOUGLAS A · director | A-Award | 13 | $0.00 |
| Sep 24, 2026 | Carolin Roger Anthony · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | McCourt MaryFrances · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | ALEXANDER DOUGLAS A · director | A-Award | 15 | $0.00 |
| Sep 24, 2026 | Tily Gil C. · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | KIM SUSAN Y · director, 10 percent owner, other: Member of 10% owner group (5) | A-Award | 4 | $0.00 |
| Sep 24, 2026 | Morse Robert Randolph · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | WATSON DAVID N · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | McCourt MaryFrances · director | A-Award | 13 | $0.00 |
| Sep 24, 2026 | Rutten Guillaume Marie Jean · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | ALEXANDER DOUGLAS A · director | A-Award | 4 | $0.00 |
| Sep 24, 2026 | Carolin Roger Anthony · director | A-Award | 15 | $0.00 |
| Sep 10, 2026 | Faust Megan · officer: CFO | Sale | 1,000 | $49 |
| Aug 19, 2026 | ROGERS MARK N · officer: EVP & General Counsel | M-Exempt | 5,000 | $7.40 |
| Aug 19, 2026 | ROGERS MARK N · officer: EVP & General Counsel | Sale | 5,000 | $60 |
| Aug 13, 2026 | Faust Megan · officer: CFO | Sale | 1,000 | $54 |
| Aug 11, 2026 | ALEXANDER DOUGLAS A · director | M-Exempt | 5,000 | $8.51 |
| Aug 11, 2026 | ALEXANDER DOUGLAS A · director | Sale | 5,000 | $56 |
| Aug 7, 2026 | Rutten Guillaume Marie Jean · director | Sale | 25,000 | $55 |
| Jul 31, 2026 | Engel Kevin K. · director, officer: President and CEO | Sale | 3,221 | $47 |
Institutional positioning
13F filings over the trailing two quarters
New 312Increased 414Reduced 343Sold out 71
| Filer | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 12,968,765 | May 13, 2026 |
| BlackRock, Inc. | Reduced | 12,292,760 | Aug 7, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 10,991,469 | May 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 9,712,553 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9,095,848 | May 8, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 8,064,191 | Aug 11, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6,701,080 | Aug 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 5,702,608 | Aug 12, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5,434,318 | May 15, 2026 |
| JPMORGAN CHASE & CO | Increased | 5,406,545 | May 13, 2026 |
| STATE STREET CORP | Increased | 3,730,584 | Sep 22, 2026 |
| STATE STREET CORP | Increased | 3,628,542 | May 15, 2026 |
| EARNEST PARTNERS LLC | Reduced | 3,431,843 | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3,242,130 | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3,231,546 | Aug 14, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Oct 15, 2026