13F Pro

SEC Form 4 reporting owner

Schlosser Mario

Schlosser Mario has filed 36 Form 4 transactions reported between December 2, 2025 and September 3, 2026, as Director, President of Technology & CTO of Oscar Health, Inc. and Director of Duolingo, Inc..

Name as filed: Schlosser Mario

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$38.3M
22 lines
Companies
2
with Form 4 filings
Latest transaction
Sep 3, 2026
transaction date

Roles and reported holdings

  • OSCROscar Health, Inc.
    Dec 2, 2025 – Sep 3, 2026

    Director, President of Technology & CTO

    Held directly449,444 sh as of Sep 3, 2026 · Form 4
    Held indirectly (latest line)0 sh as of Jul 1, 2026 · Form 4

    24 months: $38.3M sold

  • DUOLDuolingo, Inc.
    Jun 3, 2026 – Jul 10, 2026

    Director

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

Transaction history

All 36 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 3, 2026OSCRDirectorOpen-market saleCode S · direct31,422$988K@ $31.45Form 4
Aug 28, 2026OSCRDirectorConversion of derivativeCode C · direct150,000—Form 4
Aug 27, 2026OSCRDirectorConversion of derivativeCode C · direct600,000—Form 4
Jul 10, 2026DUOLDirectorGrant or awardCode A · direct140$17K@ $124.76Form 4
Jul 1, 2026OSCRDirectorOpen-market saleCode S · indirect30,228$957K@ $31.65Form 4
Jul 1, 2026OSCRDirectorOpen-market saleCode S · indirect13,672$421K@ $30.80Form 4
Jul 1, 2026OSCRDirectorOpen-market saleCode S · indirect3,600$106K@ $29.50Form 4
Jul 1, 2026OSCRDirectorConversion of derivativeCode C · indirect47,500—Form 4
Jun 23, 2026OSCRDirectorOption exerciseCode M · direct660,000—Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect97$3K@ $30.09Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect31,912$944K@ $29.58Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect15,491$448K@ $28.95Form 4
Jun 23, 2026OSCRDirectorConversion of derivativeCode C · indirect47,500—Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect33,592$994K@ $29.58Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect16,306$472K@ $28.95Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect102$3K@ $30.09Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect33,591$994K@ $29.58Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · indirect16,307$472K@ $28.95Form 4
Jun 23, 2026OSCRDirectorConversion of derivativeCode C · indirect50,000—Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · direct1,799$54K@ $30.09Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · direct591,213$17.5M@ $29.58Form 4
Jun 23, 2026OSCRDirectorOpen-market saleCode S · direct286,988$8.3M@ $28.95Form 4
Jun 23, 2026OSCRDirectorConversion of derivativeCode C · direct880,000—Form 4
Jun 3, 2026DUOLDirectorGrant or awardCode A · direct2,001—Form 4
Jun 2, 2026OSCRDirectorOpen-market saleCode S · direct9,668$217K@ $22.45Form 4
Jun 2, 2026OSCRDirectorOpen-market saleCode S · direct24,452$532K@ $21.74Form 4
Mar 2, 2026OSCRPresident of Technology & CTOOpen-market saleCode S · direct24,335$326K@ $13.39Form 4
Mar 2, 2026OSCRPresident of Technology & CTOGrant or awardCode A · direct189,141—Form 4
Jan 8, 2026OSCRPresident of Technology & CTOConversion of derivativeCode C · direct23,038—Form 4
Jan 6, 2026OSCRPresident of Technology & CTOConversion of derivativeCode C · direct76,962—Form 4
Jan 5, 2026OSCRPresident of Technology & CTOOpen-market saleCode S · direct96,928$1.5M@ $15.64Form 4
Jan 5, 2026OSCRPresident of Technology & CTOConversion of derivativeCode C · direct86,893—Form 4
Jan 2, 2026OSCRPresident of Technology & CTOOpen-market saleCode S · direct137,933$2.1M@ $15.02Form 4
Jan 2, 2026OSCRPresident of Technology & CTOConversion of derivativeCode C · direct59,800—Form 4
Dec 24, 2025OSCRPresident of Technology & CTOOpen-market saleCode S · direct38,835$583K@ $15.00Form 4
Dec 2, 2025OSCRPresident of Technology & CTOOpen-market saleCode S · direct23,965$398K@ $16.59Form 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.