13F Pro

SEC Form 4 reporting owner

Rutten Guillaume Marie Jean

Rutten Guillaume Marie Jean has filed 21 Form 4 transactions reported between December 15, 2025 and September 22, 2026, as Director, President and CEO of AMKOR TECHNOLOGY, INC..

Name as filed: Rutten Guillaume Marie Jean

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$8.9M
7 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 22, 2026
transaction date

Roles and reported holdings

  • AMKRAMKOR TECHNOLOGY, INC.
    Dec 15, 2025 – Sep 22, 2026

    Director, President and CEO

    Held directly461,732 sh as of Aug 6, 2026 · Form 4

    24 months: $8.9M sold

Transaction history

All 21 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 22, 2026AMKRDirectorGrant or awardCode A · direct4—Form 4
Aug 6, 2026AMKRDirectorOpen-market saleCode S · direct25,000$1.4M@ $54.50Form 4
Aug 5, 2026AMKRDirectorOpen-market saleCode S · direct25,000$1.4M@ $55.35Form 4
Jun 30, 2026AMKRDirectorOption exerciseCode M · direct8,692—Form 4
Jun 23, 2026AMKRDirectorGrant or awardCode A · direct3—Form 4
May 13, 2026AMKRDirectorGrant or awardCode A · direct2,613—Form 4
May 13, 2026AMKRDirectorOption exerciseCode M · direct482—Form 4
May 8, 2026AMKRDirectorOpen-market saleCode S · direct50,000$3.7M@ $74.28Form 4
Apr 1, 2026AMKRDirectorGrant or awardCode A · direct482—Form 4
Mar 31, 2026AMKRDirectorOption exerciseCode M · direct8,692—Form 4
Feb 24, 2026AMKRDirectorOpen-market saleCode S · direct20,000$976K@ $48.80Form 4
Feb 24, 2026AMKRDirectorOption exerciseCode M · direct10,748—Form 4
Feb 20, 2026AMKRDirectorOption exerciseCode M · direct59,388—Form 4
Feb 20, 2026AMKRDirectorOption exerciseCode M · direct112,941—Form 4
Feb 18, 2026AMKRDirectorGrant or awardCode A · direct30,587—Form 4
Feb 18, 2026AMKRDirectorGrant or awardCode A · direct10,891—Form 4
Feb 17, 2026AMKRDirectorOpen-market saleCode S · direct10,000$459K@ $45.89Form 4
Feb 16, 2026AMKRDirectorOption exerciseCode M · direct13,920—Form 4
Jan 15, 2026AMKRDirectorOpen-market saleCode S · direct10,000$531K@ $53.14Form 4
Dec 31, 2025AMKRPresident and CEOOption exerciseCode M · direct8,692—Form 4
Dec 15, 2025AMKRPresident and CEOOpen-market saleCode S · direct10,000$448K@ $44.80Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.