Amkor Technology Inc (AMKR)
Who owns Amkor Technology Inc (AMKR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 43.8% of the shares are freely tradable; institutional investors hold 51.3%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 5.22 | 12,968,765 | +0.4 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 4.42 | 10,991,469 | -13.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.66 | 9,095,848 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 2.19 | 5,434,318 | +0.0 | 03/31/2026 |
| JPMorgan Chase & Co | 2.18 | 5,406,545 | +1,504.8 | 03/31/2026 |
| State Street Corp | 1.46 | 3,628,542 | +4.5 | 03/31/2026 |
| Earnest Partners LLC | 1.38 | 3,431,843 | -9.5 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Morn Total Stk Mkt Idx Investor | 2.06 | 5,115,783 | +30.0 | 06/30/2026 |
| iShares Core S&P Mid-Cap ETF | 1.57 | 3,901,291 | +0.2 | 07/28/2026 |
| Vanguard Small Cap Index | 1.49 | 3,695,110 | +29.8 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 30. Jul 2026 | Churchill Winston J | Director | Other | 100 | 0.00 | – |
| 30. Jul 2026 | Engel Kevin K. | President and CEO | Sell | 3,221 | 47.00 | 151,387 |
| 20. Jul 2026 | Kim Agnes C | Member of 10% owner group (4) | Other | 250,000 | 9.48 | 2,370,000 |
| 20. Jul 2026 | Kim Agnes C | Member of 10% owner group (4) | Other | 200,000 | 9.86 | 1,972,000 |
| 20. Jul 2026 | Kim James J | 10% Owner | Other | 250,000 | 9.48 | 2,370,000 |
| 20. Jul 2026 | Kim James J | 10% Owner | Other | 200,000 | 9.86 | 1,972,000 |
| 16. Jul 2026 | Rogers Mark N | EVP & General Counsel | Sell | 5,000 | 65.12 | 325,600 |
| 16. Jul 2026 | Rogers Mark N | EVP & General Counsel | Other | 5,000 | 7.40 | 37,000 |
| 14. Jul 2026 | Faust Megan | CFO | Sell | 1,000 | 69.91 | 69,910 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.