Amkor Technology (AMKR)Executive Vice President sold ~$508K

~$508K

Approx. value · 11K sh @ $46.21

349

Holds after · shares reported

Traded

Dec 12, 2025

Filed

Dec 16, 2025

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. Oct 15, 2025InsiderCEO sold ~$307K of AMKR shares in the open market
2. Oct 21, 2025Company filing · Form 8-K · Results, Executive changeChanged a top executive or board member, and reported its results (and 1 more item)“On October 21, 2025, Mr. Giel Rutten, the President and Chief Executive Officer of Amkor Technology, Inc. (the “Company”), provided notice that he would voluntarily retire as President and Chief Executive Officer on December 31, 2025.”
3. Oct 28, 2025Company filing · Form 8-K · Executive changeChanged a top executive or board member“On October 28, 2025, John Liu, resigned as a member of the Board of Directors (the “Board”) of Amkor Technology, Inc. (the “Company”). The resignation was not due to any disagreements with the Company on any matter relating to the Company’s operations, policies or practices.”
4. Nov 17, 2025Insider · 2 peopleInsiders: 2 sales (~$951K)
5. Dec 12, 2025 · this disclosureInsiderOfficer sold ~$508K of AMKR shares in the open market

What came next

1. Dec 12, 2025Insider · 2 peopleInsiders: 2 sales (~$1.8M)
2. Dec 15, 2025Insider · 2 peopleInsiders: 2 sales (~$669K)
3. Dec 16, 2025InsiderOfficer sold ~$859K of AMKR shares in the open market
4. Jan 15, 2026InsiderDirector sold ~$531K of AMKR shares in the open market
5. Jan 16, 2026InsiderOfficer sold ~$246K of AMKR shares in the open market
6. Feb 2, 2026Company filing · Form 8-K · Executive changeChanged a top executive or board member“On February 2, 2026, Amkor Technology, Inc. (the “Company”) appointed Cherie Buntyn to serve as the Company’s Senior Vice President and Chief Accounting Officer, in which capacity she will serve as the Company’s principal accounting officer.”
7. Feb 9, 2026Company filing · Form 8-K · ResultsReported its results
8. Feb 12, 2026Insider · 2 peopleInsiders: 2 sales (~$969.8M)
9. Feb 17, 2026Insider · 3 peopleInsiders: 3 sales (~$938K)
10. Feb 24, 2026Insider · 2 peopleInsiders: 2 sales (~$1.6M)
11. Feb 25, 2026InsiderOfficer sold ~$789K of AMKR shares in the open market
12. Mar 16, 2026InsiderOfficer sold ~$223K of AMKR shares in the open market

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Amkor Technology

For Amkor Technology, OQRO holds 11 insider filings (SEC Form 4 or Form 144) and 8 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its AMKR page.

Other recent filings by Kevin Engel, Executive Vice President

• SEC Form 4 at Amkor Technology (AMKR)Jul 31, 2026
• SEC Form 4 at Amkor Technology (AMKR)Feb 26, 2026
• SEC Form 4 at Amkor Technology (AMKR)Feb 18, 2026
• SEC Form 4 at Amkor Technology (AMKR)Feb 26, 2025

The full history of Kevin Engel, Executive Vice President is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Amkor Technology

• SEC Form 4Oct 6, 2026
• SEC Form 144Oct 2, 2026
• SEC Form 4Sep 10, 2026
• SEC Form 4Aug 19, 2026
• SEC Form 13F-HRAug 14, 2026
• SEC Form 13F-HRAug 14, 2026

Everything OQRO holds on this company is on its AMKR page.