13F Pro

SEC Form 4 reporting owner

Seraphin Luc

Seraphin Luc has filed 13 Form 4 transactions reported between February 1, 2026 and April 2, 2026, as President and CEO of RAMBUS INC.

Name as filed: Seraphin Luc

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$4.4M
9 lines
Companies
1
with Form 4 filings
Latest transaction
Apr 2, 2026
transaction date

Roles and reported holdings

  • RMBSRAMBUS INC
    Feb 1, 2026 – Apr 2, 2026

    President and CEO

    Held directly345,767 sh as of Apr 2, 2026 · Form 4

    24 months: $4.4M sold

Transaction history

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

DateCompanyTypeSharesValueFiling
Apr 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct165$15K@ $88.35Form 4
Apr 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct2,750$240K@ $87.11Form 4
Apr 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct2,511$216K@ $86.04Form 4
Apr 1, 2026RMBSPresident and CEOShares withheld for tax or exercise priceCode F · direct12,561$1.1M@ $89.95Form 4
Apr 1, 2026RMBSPresident and CEOGrant or awardCode A · direct32,684—Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct1,300$132K@ $101.65Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct6,587$660K@ $100.20Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct9,469$939K@ $99.17Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct13,654$1.3M@ $98.22Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct7,225$704K@ $97.38Form 4
Mar 2, 2026RMBSPresident and CEOOpen-market saleCode S · direct1,679$161K@ $95.83Form 4
Feb 1, 2026RMBSPresident and CEOShares withheld for tax or exercise priceCode F · direct92,523$10.5M@ $113.71Form 4
Feb 1, 2026RMBSPresident and CEOGrant or awardCode A · direct143,744—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.