SEC Form 4 reporting owner

Lappe Mark

Lappe Mark has filed 6 Form 4 transactions reported between September 8, 2026 and September 8, 2026, as Chief Executive Officer of Inhibrx Biosciences, Inc..

Name as filed: Lappe Mark

Open-market buys, 24 mo
$2.6M
6 lines
Open-market sales, 24 mo
None
reported
Companies
1
with Form 4 filings
Latest transaction
Sep 8, 2026
transaction date

Roles and reported holdings

  • INBXInhibrx Biosciences, Inc.
    Sep 8, 2026

    Chief Executive Officer

    Held indirectly (latest line)730,548 sh as of Sep 8, 2026 · Form 4

    24 months: $2.6M bought

Transaction history

All 6 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect9,681$1.1M@ $112.28Form 4
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect1,219$136K@ $111.88Form 4
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect500$54K@ $108.23Form 4
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect1,100$118K@ $107.12Form 4
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect6,605$665K@ $100.64Form 4
Sep 8, 2026INBXChief Executive OfficerOpen-market purchaseCode P · indirect5,895$585K@ $99.29Form 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.