Amkor Technology (AMKR)Insider bought ~$9.65M

~$9.65M

Approx. value · 442K sh @ $21.85

3.79M

Holds after · shares reported

Traded

Aug 1, 2025

Filed

Aug 5, 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. Jul 31, 2025InsiderOfficer sold ~$354K of AMKR shares in the open market
2. Aug 1, 2025 · this disclosureInsiderInsider purchased ~$9.65M of AMKR shares in the open market

What came next

1. Aug 1, 2025Insider · 6 peopleInsiders: 4 purchases (~$38.6M), 2 sales (~$19.3M)
2. Sep 9, 2025InsiderOfficer sold ~$295K of AMKR shares in the open market
3. Sep 22, 2025Company filing · Form 8-K · Material agreement, New debtSigned an important agreement, and took on new debt or obligations (and 1 more item)
4. Sep 23, 2025InsiderCEO sold ~$300K of AMKR shares in the open market
5. Oct 15, 2025InsiderCEO sold ~$307K of AMKR shares in the open market
6. 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.”
7. 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.”
8. Nov 17, 2025Insider · 2 peopleInsiders: 2 sales (~$951K)

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 SUJODA Investments, LP, Reporting person

• SEC Form 4 at Amkor Technology (AMKR)Feb 26, 2025

The full history of SUJODA Investments, LP, Reporting person 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.