Amkor Technology, Inc. (AMKR) Insider Trading
Over the last 3 months, AMKR insiders made 0 open-market buys and 10 sales, a net sale of -$3.5M (SEC Form 4). Over the last 6 months, 415 institutions increased and 343 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
10
Net (3m)
-$3.5M
Insider trades by month Buys Sells
Feb
Apr
May
Jun
Jul
Aug
Context3-month price -30.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Sell | 5,000 | $59.78 |
| Aug 19, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Option | 5,000 | $7.40 |
| Aug 13, 2026 | Faust Meganofficer: CFO | Sell | 1,000 | $54.45 |
| Aug 11, 2026 | ALEXANDER DOUGLAS Adirector | Option | 5,000 | $8.51 |
| Aug 11, 2026 | ALEXANDER DOUGLAS Adirector | Sell | 5,000 | $55.81 |
| Aug 7, 2026 | Rutten Guillaume Marie Jeandirector | Sell | 25,000 | $55.35 |
| Jul 31, 2026 | Engel Kevin K.director, officer: President and CEO | Sell | 3,221 | $47.00 |
| Jul 22, 2026 | KIM AGNES Cother: Member of 10% owner group (4) | Option | 250,000 | $9.48 |
| Jul 22, 2026 | KIM AGNES Cother: Member of 10% owner group (4) | Option | 200,000 | $9.86 |
| Jul 22, 2026 | KIM JAMES J10 percent owner, other: Member of 10% owner group (5) | Option | 250,000 | $9.48 |
| Jul 22, 2026 | KIM JAMES J10 percent owner, other: Member of 10% owner group (5) | Option | 200,000 | $9.86 |
| Jul 20, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Sell | 5,000 | $65.12 |
| Jul 20, 2026 | ROGERS MARK Nofficer: EVP & General Counsel | Option | 5,000 | $7.40 |
| Jul 16, 2026 | Faust Meganofficer: CFO | Sell | 1,000 | $69.91 |
| Jul 2, 2026 | Faust Meganofficer: CFO | Option | 8,692 | — |
| Jul 2, 2026 | Engel Kevin K.director, officer: President and CEO | Tax | 3,725 | $86.23 |
| Jul 2, 2026 | Faust Meganofficer: CFO | Tax | 3,725 | $86.23 |
| Jul 2, 2026 | Engel Kevin K.director, officer: President and CEO | Option | 8,692 | — |
| Jul 2, 2026 | Rutten Guillaume Marie Jeandirector | Option | 8,692 | — |
| Jun 25, 2026 | ALEXANDER DOUGLAS Adirector | Grant | 9 | — |
| Jun 25, 2026 | Tily Gil C.director | Grant | 3 | — |
| Jun 25, 2026 | ALEXANDER DOUGLAS Adirector | Grant | 8 | — |
| Jun 25, 2026 | WATSON DAVID Ndirector | Grant | 3 | — |
| Jun 25, 2026 | KIM SUSAN Ydirector, 10 percent owner, other: Member of 10% owner group (5) | Grant | 3 | — |
| Jun 25, 2026 | Morse Robert Randolphdirector | Grant | 8 | — |
| Jun 25, 2026 | Carolin Roger Anthonydirector | Grant | 9 | — |
| Jun 25, 2026 | Liao Daniel JLdirector | Grant | 3 | — |
| Jun 25, 2026 | ALEXANDER DOUGLAS Adirector | Grant | 3 | — |
| Jun 25, 2026 | ALEXANDER DOUGLAS Adirector | Grant | 8 | — |
| Jun 25, 2026 | McCourt MaryFrancesdirector | Grant | 8 | — |
Source: AMKR SEC Form 4 filings, latest Aug 19, 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
415
New positions
309
Reduced
343
Sold out
50
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 13.0M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 12.3M | Aug 7, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 11.0M | May 7, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 9.7M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9.1M | May 8, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 8.1M | Aug 11, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.7M | Aug 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 5.7M | Aug 12, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 5.4M | May 15, 2026 |
| JPMORGAN CHASE & CO | Increased | 5.4M | May 13, 2026 |
| STATE STREET CORP | Increased | 3.7M | Aug 7, 2026 |
| STATE STREET CORP | Increased | 3.6M | May 15, 2026 |
| EARNEST PARTNERS LLC | Reduced | 3.4M | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3.2M | May 15, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 3.2M | Aug 14, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.