13F Pro

SEC Form 4 reporting owner

Buckley Sean Patrick

Buckley Sean Patrick has filed 14 Form 4 transactions reported between January 1, 2026 and August 18, 2026, as President, Revenue of MAGNITE, INC..

Name as filed: Buckley Sean Patrick

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$2.7M
6 lines
Companies
1
with Form 4 filings
Latest transaction
Aug 18, 2026
transaction date

Roles and reported holdings

  • MGNIMAGNITE, INC.
    Jan 1, 2026 – Aug 18, 2026

    President, Revenue

    Held directly293,060 sh as of Aug 18, 2026 · Form 4

    24 months: $2.7M sold

Transaction history

All 14 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 18, 2026MGNIOpen-market saleCode S · direct2,759$69K@ $25.00Form 4
Aug 17, 2026MGNIOpen-market saleCode S · direct8,271$201K@ $24.31Form 4
Aug 15, 2026MGNIShares withheld for tax or exercise priceCode F · direct11,715$290K@ $24.73Form 4
Aug 6, 2026MGNIOpen-market saleCode S · direct19,237$442K@ $23.00Form 4
Aug 6, 2026MGNIOpen-market saleCode S · direct47,942$1.2M@ $25.09Form 4
Aug 6, 2026MGNIOption exerciseCode M · direct28,703$399K@ $13.90Form 4
Jul 7, 2026MGNIOpen-market saleCode S · direct19,233$404K@ $21.03Form 4
Jun 17, 2026MGNIOpen-market saleCode S · direct19,233$365K@ $19.00Form 4
May 15, 2026MGNIPresident, RevenueShares withheld for tax or exercise priceCode F · direct12,019$154K@ $12.82Form 4
Feb 15, 2026MGNIPresident, RevenueShares withheld for tax or exercise priceCode F · direct26,942$315K@ $11.70Form 4
Jan 9, 2026MGNIPresident, RevenueShares withheld for tax or exercise priceCode F · direct30,369$491K@ $16.17Form 4
Jan 9, 2026MGNIPresident, RevenueOption exerciseCode M · direct64,125—Form 4
Jan 1, 2026MGNIPresident, RevenueGrant or awardCode A · direct42,757—Form 4
Jan 1, 2026MGNIPresident, RevenueGrant or awardCode A · direct127,273—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.