<div id="readability-page-1"><div><div><table><thead><tr><th><span>Reporter Name</span></th><th><span>Relationship</span></th><th><span>Type</span></th><th><span>Amount</span></th><th><span>SEC Filing</span></th></tr></thead><tbody><tr><td><span>Rogers Mark N</span></td><td><span>EVP &amp; General Counsel, 10% Owner</span></td><td><span>Sell</span></td><td><span>$859,000</span></td><td>Form 4</td></tr><tr><td><span>Rutten Guillaume Marie Jean</span></td><td><span>President and CEO, 10% Owner</span></td><td><span>Sell</span></td><td><span>$448,000</span></td><td>Form 4</td></tr></tbody></table></div><p><span>Mark N. Rogers, EVP &amp; General Counsel and 10% owner at Amkor Technology, sold 20,000 shares of common stock on December 16, 2025, at a weighted average price of $42.95 per share, totaling $859,000. Following the transaction, Rogers directly owns 23,862 shares of Amkor Technology.</span></p><p><span>Guillaume Marie Jean Rutten, President and CEO of Amkor Technology and a 10% owner, sold 10,000 shares of common stock on December 15, 2025, at a weighted average price of $44.8 per share, totaling $448,000. Following the transaction, Rutten directly owns 336,699 shares of the company.</span></p></div></div>

AMKR

<p>Amkor Technology's EVP & General Counsel Mark N. Rogers sold 20,000 shares for $859,000, and President & CEO Guillaume Marie Jean Rutten sold 10,000 shares for $448,000 in December 2025.</p>

Amkor Technology Executives and Director Sell Shares