13F Pro

SEC Form 4 reporting owner

Hamann Jennifer L

Hamann Jennifer L has filed 24 Form 4 transactions reported between December 4, 2025 and September 10, 2026, as EVP & CHIEF FINANCIAL OFFICER of UNION PACIFIC CORP and Director of STEEL DYNAMICS INC.

Name as filed: Hamann Jennifer L

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$549K
1 lines
Companies
2
with Form 4 filings
Latest transaction
Sep 10, 2026
transaction date

Roles and reported holdings

  • UNPUNION PACIFIC CORP
    Dec 4, 2025 – Sep 10, 2026

    EVP & CHIEF FINANCIAL OFFICER

    Held directly114,642 sh as of Apr 24, 2026 · Form 4

    24 months: $549K sold

  • STLDSTEEL DYNAMICS INC
    Jan 9, 2026 – Aug 13, 2026

    Director

    No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 24 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct7$2K@ $285.78Form 4
Aug 13, 2026STLDDirectorGrant or awardCode A · direct72—Form 4
Aug 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct8$2K@ $292.24Form 4
Jul 10, 2026STLDDirectorGrant or awardCode A · direct18—Form 4
Jul 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct8$2K@ $286.96Form 4
Jun 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct9$2K@ $267.03Form 4
Jun 1, 2026STLDDirectorGrant or awardCode A · direct712—Form 4
May 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct9$2K@ $264.65Form 4
May 6, 2026STLDDirectorGrant or awardCode A · direct79—Form 4
Apr 24, 2026UNPEVP & CHIEF FINANCIAL OFFICEROpen-market saleCode S · direct2,000$549K@ $274.70Form 4
Apr 10, 2026STLDDirectorGrant or awardCode A · direct16—Form 4
Apr 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct9$2K@ $250.51Form 4
Mar 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct9$2K@ $250.21Form 4
Feb 20, 2026STLDDirectorGrant or awardCode A · direct99—Form 4
Feb 12, 2026UNPEVP & CHIEF FINANCIAL OFFICERShares withheld for tax or exercise priceCode F · direct902$237K@ $262.81Form 4
Feb 12, 2026UNPEVP & CHIEF FINANCIAL OFFICERShares withheld for tax or exercise priceCode F · direct2,016$530K@ $262.81Form 4
Feb 12, 2026UNPEVP & CHIEF FINANCIAL OFFICEROption exerciseCode M · direct4,243$530K@ $124.86Form 4
Feb 10, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct8$2K@ $261.32Form 4
Feb 9, 2026UNPEVP & CHIEF FINANCIAL OFFICERShares withheld for tax or exercise priceCode F · direct2,680$682K@ $254.34Form 4
Feb 9, 2026UNPEVP & CHIEF FINANCIAL OFFICERDisposition to issuerCode D · direct8,769—Form 4
Feb 5, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct29,811—Form 4
Feb 5, 2026UNPEVP & CHIEF FINANCIAL OFFICERGrant or awardCode A · direct17,898—Form 4
Jan 9, 2026STLDDirectorGrant or awardCode A · direct15—Form 4
Dec 4, 2025UNPEVP & CHIEF FINANCIAL OFFICERGiftCode G · direct300—Form 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.