13F Pro

SEC Form 4 reporting owner

Nemser Earl H

Nemser Earl H has filed 13 Form 4 transactions reported between December 31, 2025 and July 31, 2026, as Vice Chairman of Interactive Brokers Group, Inc..

Name as filed: Nemser Earl H

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$30.7M
8 lines
Companies
1
with Form 4 filings
Latest transaction
Jul 31, 2026
transaction date

Roles and reported holdings

  • IBKRInteractive Brokers Group, Inc.
    Dec 31, 2025 – Jul 31, 2026

    Vice Chairman

    Held directly429,344 sh as of May 8, 2026 · Form 4
    Held indirectly (latest line)0 sh as of Jan 27, 2026 · Form 4

    24 months: $30.7M sold

Transaction history

All 13 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Jul 31, 2026IBKRVice ChairmanGrant or awardCode A · indirect803,568$70.7M@ $87.99Form 4
May 8, 2026IBKRVice ChairmanShares withheld for tax or exercise priceCode F · direct22,486$1.9M@ $84.42Form 4
Jan 27, 2026IBKRVice ChairmanOpen-market saleCode S · indirect20,469$1.6M@ $75.75Form 4
Jan 27, 2026IBKRVice ChairmanOpen-market saleCode S · indirect39,731$3.0M@ $75.07Form 4
Jan 26, 2026IBKRVice ChairmanOpen-market saleCode S · indirect3,101$242K@ $77.98Form 4
Jan 26, 2026IBKRVice ChairmanOpen-market saleCode S · indirect30,817$2.4M@ $76.72Form 4
Jan 26, 2026IBKRVice ChairmanOpen-market saleCode S · indirect60,882$4.6M@ $75.83Form 4
Jan 23, 2026IBKRVice ChairmanOpen-market saleCode S · indirect60,065$4.7M@ $78.14Form 4
Jan 23, 2026IBKRVice ChairmanOpen-market saleCode S · indirect84,935$6.6M@ $77.65Form 4
Jan 22, 2026IBKRVice ChairmanOpen-market saleCode S · indirect100,000$7.7M@ $76.81Form 4
Jan 1, 2026IBKRVice ChairmanGrant or awardCode A · direct389$25K@ $64.31Form 4
Dec 31, 2025IBKRVice ChairmanGrant or awardCode A · direct389$25K@ $64.31Form 4
Dec 31, 2025IBKRVice ChairmanGrant or awardCode A · direct23,240—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.