John T. Kim

John T. Kim is a declared insider of Amkor Technology, Inc. (chief executive), with filings sourced from SEC (Form 4). We count 48 filings; the first trade dates from 11 February 2008 and the latest from 12 February 2026.

In open-market terms, that means 4 purchases worth €42.1M on one side and 13 sales worth €586.1M on the other. The totals do not cover 1 filing with an undisclosed amount. A purchase on the market is a deliberate choice to commit personal money, which is why it draws more attention than a grant. Outside the open market, there are 3 share grants and 4 option exercises. So far in 2026, the count stands at no purchases and 1 sale.

A typical purchase (the median) is worth €15.5M.

Most recently, on 17 February 2026, the filings show an open-market sale worth €408.3M in Amkor Technology, Inc. The last insider purchase was made public on 5 August 2025, 460 days ago. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4. Sales are harder to read than purchases, since they often meet personal needs such as tax or diversification. These figures are compiled from regulatory filings published by SEC (Form 4). They describe what insiders did and are not a recommendation.