13F Pro

SEC Form 4 reporting owner

Wyszomierski Jack L

Wyszomierski Jack L has filed 16 Form 4 transactions reported between February 18, 2026 and July 14, 2026, as a reporting owner of XOMA Royalty Corp, Director of EXELIXIS, INC. and Director of SiteOne Landscape Supply, Inc..

Name as filed: WYSZOMIERSKI JACK L

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$4.6M
2 lines
Companies
3
with Form 4 filings
Latest transaction
Jul 14, 2026
transaction date

Roles and reported holdings

  • XOMAXOMA Royalty Corp
    Mar 24, 2026 – Jul 14, 2026

    Reporting owner

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

  • EXELEXELIXIS, INC.
    Feb 18, 2026 – Jun 1, 2026

    Director

    Held directly284,384 sh as of Jun 1, 2026 · Form 4

    24 months: $4.6M sold

  • SITESiteOne Landscape Supply, Inc.
    May 13, 2026

    Director

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

Transaction history

All 16 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jul 14, 2026XOMADisposition to issuerCode D · direct10,967—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct8,996—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct5,101—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct6,152—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct8,167—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct5,052—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct2,366—Form 4
Jul 14, 2026XOMADisposition to issuerCode D · direct8,000—Form 4
Jul 14, 2026XOMAOther acquisition or dispositionCode J · direct21,828—Form 4
Jun 1, 2026EXELDirectorOpen-market saleCode S · direct3,925$198K@ $50.55Form 4
May 27, 2026EXELDirectorGrant or awardCode A · direct8,367—Form 4
May 21, 2026XOMAGrant or awardCode A · direct3,586—Form 4
May 13, 2026SITEDirectorGrant or awardCode A · direct1,186—Form 4
Mar 24, 2026XOMAOption exerciseCode M · direct3,026$34K@ $11.20Form 4
Feb 18, 2026EXELDirectorOpen-market saleCode S · direct99,574$4.4M@ $44.01Form 4
Feb 18, 2026EXELDirectorOption exerciseCode M · direct20,634$408K@ $19.77Form 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.