13F Pro

SEC Form 4 reporting owner

Reinstra Mark

Reinstra Mark has filed 25 Form 4 transactions reported between February 9, 2026 and September 8, 2026, as Chief Legal Off. & Corp. Sec. of Roblox Corp.

Name as filed: Reinstra Mark

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$11.2M
22 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 8, 2026
transaction date

Roles and reported holdings

  • RBLXRoblox Corp
    Feb 9, 2026 – Sep 8, 2026

    Chief Legal Off. & Corp. Sec.

    Held directly392,291 sh as of Sep 8, 2026 · Form 4

    24 months: $11.2M sold

Transaction history

All 25 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 8, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct100$5K@ $45.73Form 4
Sep 8, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct3,753$169K@ $45.03Form 4
Sep 8, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct1,920$85K@ $44.30Form 4
Aug 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct4,914$189K@ $38.45Form 4
Aug 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct13,020$492K@ $37.78Form 4
Aug 19, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct6,250$250K@ $40.00Form 4
Jul 6, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct1,100$64K@ $57.94Form 4
Jul 6, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct3,212$184K@ $57.24Form 4
Jul 6, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct200$11K@ $55.77Form 4
Jun 8, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct5,978$249K@ $41.71Form 4
May 21, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct4,899$228K@ $46.46Form 4
May 21, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct561$26K@ $45.93Form 4
May 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct15,372$698K@ $45.38Form 4
May 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct1,903$85K@ $44.48Form 4
Apr 13, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct100$6K@ $58.47Form 4
Apr 13, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct18,553$1.1M@ $57.94Form 4
Mar 1, 2026RBLXChief Legal Off. & Corp. Sec.Grant or awardCode A · direct104,236—Form 4
Mar 1, 2026RBLXChief Legal Off. & Corp. Sec.Grant or awardCode A · direct96,790—Form 4
Feb 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct1,070$67K@ $62.69Form 4
Feb 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct10,203$631K@ $61.89Form 4
Feb 20, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct5,913$360K@ $60.92Form 4
Feb 13, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct60,000$3.8M@ $63.94Form 4
Feb 10, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct2,615$191K@ $73.14Form 4
Feb 10, 2026RBLXChief Legal Off. & Corp. Sec.Open-market saleCode S · direct31,705$2.3M@ $72.61Form 4
Feb 9, 2026RBLXChief Legal Off. & Corp. Sec.Option exerciseCode M · direct118,110—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.