Amkor Technology, Inc. (AMKR) Shareholders & Insider Trades
Amkor Technology shareholders at a glance
The largest holder of Amkor Technology stock is Kim Family Trusts, with 104.1 million shares (41.91% of the company), worth about $4.93 billion as of September 25, 2026. The 10 largest holders together own 88.4%.
In Q2 2026, 689 institutional holdings reports listed 129.0 million shares worth $10.10 billion, up 6.6% in shares from Q1 2026.
Insiders reported 100 transactions in the last two years: 23 sales worth $554.72 million and 9 purchases. The newest one on file is from May 13, 2026 (Watson David N., Director).
Major holders as of September 25, 2026; quarterly totals from institutional holdings reports (latest Q2 2026); insider transactions on file through May 13, 2026.
Amkor Technology, Inc.
Shareholders Summary
2026Q2
Ownership by Type
Geographic Distribution
Largest Amkor Technology shareholders
| Holder | Shares | % of company | Value |
|---|---|---|---|
| Kim Family Trusts | 104.1 million | 41.91% | $4.9B |
| 915 Investments LP | 29.6 million | 11.91% | $1.4B |
| Sujochil LP | 19.5 million | 7.84% | $922.0M |
| Kim Capital Partners LLC | 16.7 million | 6.73% | $790.0M |
| BlackRock Advisors LLC | 11.7 million | 4.69% | $551.0M |
| Vanguard Portfolio Management LLC | 9.7 million | 3.91% | $459.0M |
| DFA Australia Ltd. | 7.7 million | 3.08% | $362.0M |
| Susan Kim2.916 % | 7.2 million | 2.92% | $343.0M |
| John Kim2.756 % | 6.8 million | 2.76% | $324.0M |
| Vanguard Capital Management LLC | 6.7 million | 2.70% | $317.0M |
As of September 25, 2026.
Amkor Technology institutional holdings by quarter
| Quarter | Reports | Shares | Value |
|---|---|---|---|
| Q2 2026 | 689 | 129.0 million | $10.1B |
| Q1 2026 | 566 | 121.0 million | $5.4B |
| Q4 2025 | 484 | 114.0 million | $4.5B |
| Q3 2025 | 410 | 108.0 million | $3.1B |
| Q2 2025 | 377 | 114.0 million | $2.4B |
| Q1 2025 | 379 | 109.0 million | $2.0B |
| Q4 2024 | 361 | 110.0 million | $2.8B |
| Q3 2024 | 380 | 107.0 million | $3.3B |
Shares and value held by institutions that file quarterly holdings reports (options not included).
Amkor Technology insider trades
| Insider | Date | Title | Transaction | Value |
|---|---|---|---|---|
| Watson David N. | May 13, 2026 | Director | -- | – |
| Tily Gil Coleman | May 13, 2026 | Director | -- | – |
| Kim Susan Y | May 13, 2026 | Director and Beneficial Owner of more than 10% of a Class of Security | Conversion of Exercise of derivative security at price 74.61 per share. | $738,121 |
| Churchill Winston J. Jr. | May 13, 2026 | Director | -- | – |
| Mccourt Maryfrances | May 13, 2026 | Director | -- | – |
| Rutten Guillaume Marie Jean | May 13, 2026 | Director | -- | – |
| Tily Gil Coleman | May 11, 2026 | Director | Sale at price 77.30 per share. | $1.2M |
| Rutten Guillaume Marie Jean | May 8, 2026 | Director | Sale at price 74.28 per share. | $3.7M |
| Churchill Winston J. Jr. | May 5, 2026 | Director | Sale at price 76.45 per share. | $535,150 |
| Alexander Douglas A | May 5, 2026 | Director | Sale at price 76.58 per share. | $382,900 |
| Carolin Roger Anthony | May 5, 2026 | Director | Sale at price 76.24 per share. | $1.5M |
| Carolin Roger Anthony | May 5, 2026 | Director | Conversion of Exercise of derivative security at price 11.71 per share. | $234,200 |
Newest 12 of 100 insider transactions in the last two years.
Questions and answers
Who owns the most Amkor Technology stock?
Kim Family Trusts, with 41.91% of the company (as of September 25, 2026). Next: 915 Investments LP (11.91%) and Sujochil LP (7.84%).
How many institutions own Amkor Technology stock?
689 institutional holdings reports listed Amkor Technology shares in Q2 2026, 129.0 million shares in all worth $10.10 billion.
Are Amkor Technology insiders buying or selling the stock?
In the last two years insiders reported 23 sales and 9 purchases (100 transactions in all); the newest on file is from May 13, 2026.
