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SEC Form 4 reporting owner

Genachowski Julius

Genachowski Julius has filed 10 Form 4 transactions reported between March 5, 2026 and October 12, 2026, as Director of Mastercard Inc, Director of Sonos Inc and Director of MATTEL INC /DE/.

Name as filed: GENACHOWSKI JULIUS

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Genachowski Julius holds 10,027 shares of MA, worth $6.2M, under 0.01% of the company.

As of their Oct 9, 2026 Form 4 (filed Oct 13, 2026) · the filing on SEC EDGAR · 8,237 direct, 1,790 indirect · valued at the Oct 26, 2026 close of $613.50 · 1.77B shares outstanding on Jun 30, 2026, weighted average, basic

Genachowski Julius holds 147,809 shares of SONO, worth $2.6M, 0.13% of the company.

As of their Jul 28, 2026 Form 4 (filed Jul 30, 2026) · the filing on SEC EDGAR · 53,775 direct, 94,034 indirect · valued at the Oct 26, 2026 close of $17.59 · 118.3M shares outstanding on Jul 20, 2026

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$435K
3 lines
Companies
3
with Form 4 filings
Latest transaction
Oct 12, 2026
transaction date

Roles and reported holdings

  • MAMastercard Inc
    Jun 16, 2026 – Oct 12, 2026

    Director

    Held directly8,237 sh
    By Trust 11,745 sh
    By Trust 245 sh

    As of Oct 9, 2026 · Form 4

    Shares held, direct and indirect, MA, after each Form 4
    8,8219,47210KJun 16, 2026: 8,978 shares (Form 4)Oct 9, 2026: 10K shares (Form 4)Jun 16, 2026Oct 9, 2026
    FilingShares afterChange
    Oct 9, 202610K+1,049
    Jun 16, 20268,978—

    24 months: $435K sold

  • SONOSonos Inc
    Mar 5, 2026 – Jul 29, 2026

    Director

    Held directly53,775 sh
    By Trust 292,484 sh
    By Trust 11,550 sh

    As of Jul 28, 2026 · Form 4

  • MATMATTEL INC /DE/
    May 28, 2026

    Director

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

Transaction history

All 10 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Oct 12, 2026MADirectorOpen-market saleCode S · direct370$218K@ $590.21Form 4
Oct 9, 2026MADirectorOpen-market saleCode S · direct1$590@ $590.00Form 4
Oct 9, 2026MADirectorOpen-market saleCode S · direct370$216K@ $585.00Form 4
Jul 29, 2026SONODirectorOption exerciseCode M · direct19,855$269K@ $13.56Form 4
Jul 28, 2026SONODirectorOption exerciseCode M · direct19,855$269K@ $13.56Form 4
Jun 16, 2026MADirectorGrant or awardCode A · direct509—Form 4
May 28, 2026MATDirectorGrant or awardCode A · direct11,753—Form 4
Mar 6, 2026SONODirectorGiftCode G · direct15,427—Form 4
Mar 5, 2026SONODirectorGrant or awardCode A · direct4,772—Form 4
Mar 5, 2026SONODirectorGrant or awardCode A · direct12,725—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 each ownership line is left at by the person’s latest Form 4, 4/A or 5: held directly, and through each trust or entity named on the filing. A second class of common stock that converts into the listed one counts as shares; options and restricted stock units are listed but not counted. Value uses the latest trade or close, and the share of the company uses the latest shares-outstanding count the company reported. Where a filing has not yet been read line by line, the figure comes from the latest direct and indirect lines that traded and is shown as “at least”.

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