<div id="readability-page-1"><div><p><span>Rutten Guillaume Marie Jean Chief Executive Officer of Amkor Technology Inc [AMKR] filed a Form 4 on November 19, 2025 with the Securities and Exchange Commission disclosing the following changes in ownership:</span></p><div><table><tbody><tr><td><span>Date</span></td><td><span>11/17/25</span></td></tr><tr><td><span>Transaction</span></td><td><span>Planned Sale(1)</span></td></tr><tr><td><span>Shares</span></td><td><span>10,000</span></td></tr><tr><td><span>Price</span></td><td><span>$31.68</span></td></tr><tr><td><span>Value</span></td><td><span>$316,800</span></td></tr></tbody></table></div><p><span>Ending Holdings: 346,699 - Direct</span></p><ul><li><span>(1)</span></li><li><span>Executed pursuant to a prearranged trading plan (10b5-1).</span></li></ul><p><span>For a free trial, or to learn more about our insider trading analysis and data services, please visit http://www.washingtonservice.com or contact us at (301) 913-5100 or send an email to info@washingtonservice.com.</span></p><p><span>Founded in 1970, The Washington Service provides securities professionals with financial, economic and public policy research and data.</span></p><span> </span></div></div>

AMKR

<p>Amkor Technology Inc's CEO, Rutten Guillaume Marie Jean, sold 10,000 shares worth $316,800 on November 17, 2025, under a prearranged trading plan (10b5-1). The transaction was disclosed in a Form 4 filed with the SEC. Rutten's ending holdings are 346,699 shares directly.</p>

CEO Rutten Sells 10,000 ($316.8K) Of Amkor Technology Inc [AMKR]