Amkor Technology, Inc. (AMKR) Insider Trading
Over the last 3 months, AMKR insiders made 0 open-market buys and 8 sales, a net sale of -$7.7M (SEC Form 4). Over the last 6 months, 346 institutions increased and 301 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
8
Net (3m)
-$7.7M
Insider trades by month Buys Sells
Nov
Dec
Jan
Feb
Apr
May
Context3-month price +65.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 20, 2026 | Faust Meganofficer: CFO | Sell | 1,000 | $64.60 |
| May 20, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Sell | 5,000 | $71.63 |
| May 20, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Option | 5,000 | $7.40 |
| May 15, 2026 | McCourt MaryFrancesdirector | Grant | 2,613 | — |
| May 15, 2026 | Rutten Guillaume Marie Jeandirector | Option | 482 | — |
| May 15, 2026 | Tily Gil C.director | Grant | 2,613 | — |
| May 15, 2026 | Morse Robert Randolphdirector | Grant | 2,613 | — |
| May 15, 2026 | Liao Daniel JLdirector | Grant | 2,613 | — |
| May 15, 2026 | Carolin Roger Anthonydirector | Grant | 2,613 | — |
| May 15, 2026 | WATSON DAVID Ndirector | Grant | 2,613 | — |
| May 15, 2026 | KIM SUSAN Ydirector, 10 percent owner, other: Member of 10% owner group (6) | Grant | 2,613 | — |
| May 15, 2026 | CHURCHILL WINSTON Jdirector | Option | 9,893 | — |
| May 15, 2026 | Tily Gil C.director | Option | 9,893 | — |
| May 15, 2026 | WATSON DAVID Ndirector | Option | 9,893 | — |
| May 15, 2026 | WATSON DAVID Ndirector | Option | 9,893 | — |
| May 15, 2026 | ALEXANDER DOUGLAS Adirector | Grant | 2,613 | — |
| May 15, 2026 | Tily Gil C.director | Option | 9,893 | — |
| May 15, 2026 | McCourt MaryFrancesdirector | Option | 9,893 | — |
| May 15, 2026 | Rutten Guillaume Marie Jeandirector | Grant | 2,613 | — |
| May 15, 2026 | McCourt MaryFrancesdirector | Option | 9,893 | — |
| May 15, 2026 | KIM SUSAN Ydirector, 10 percent owner, other: Member of 10% owner group (6) | Option | 9,893 | — |
| May 15, 2026 | CHURCHILL WINSTON Jdirector | Grant | 2,613 | — |
| May 15, 2026 | CHURCHILL WINSTON Jdirector | Option | 9,893 | — |
| May 13, 2026 | Tily Gil C.director | Sell | 15,000 | $77.30 |
| May 12, 2026 | Rutten Guillaume Marie Jeandirector | Sell | 50,000 | $74.28 |
| May 7, 2026 | ALEXANDER DOUGLAS Adirector | Option | 4,657 | $9.45 |
| May 7, 2026 | CHURCHILL WINSTON Jdirector | Sell | 7,000 | $76.45 |
| May 7, 2026 | Carolin Roger Anthonydirector | Sell | 20,000 | $76.24 |
| May 7, 2026 | ALEXANDER DOUGLAS Adirector | Sell | 343 | $76.58 |
| May 7, 2026 | ALEXANDER DOUGLAS Adirector | Option | 343 | $8.51 |
Source: AMKR SEC Form 4 filings, latest May 20, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their AMKR positions over the last 6 months (SEC Form 13F).
Increased
346
New positions
237
Reduced
301
Sold out
102
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| VANGUARD GROUP INC | Reduced | 15.7M | Jan 29, 2026 |
| BLACKROCK, INC. | Increased | 13.0M | May 13, 2026 |
| BLACKROCK, INC. | Reduced | 12.9M | Feb 12, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 12.8M | Feb 12, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 11.0M | May 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9.1M | May 8, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.4M | May 15, 2026 |
| JPMORGAN CHASE & CO | Increased | 5.4M | May 13, 2026 |
| EARNEST PARTNERS LLC | Reduced | 3.8M | Feb 12, 2026 |
| STATE STREET CORP | Increased | 3.6M | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | Reduced | 3.6M | Feb 13, 2026 |
| STATE STREET CORP | Increased | 3.5M | Feb 13, 2026 |
| EARNEST PARTNERS LLC | Reduced | 3.4M | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3.3M | Feb 17, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3.2M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.