13F Pro

SEC Form 4 reporting owner

Vassallo Steven

Vassallo Steven has filed 42 Form 4 transactions reported between May 15, 2026 and September 4, 2026, as Director of Cerebras Systems Inc..

Name as filed: Vassallo Steven

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$21.4M
8 lines
Companies
1
with Form 4 filings
Latest transaction
Sep 4, 2026
transaction date

Roles and reported holdings

  • CBRSCerebras Systems Inc.
    May 15, 2026 – Sep 4, 2026

    Director

    Held indirectly (latest line)171,977 sh as of Sep 4, 2026 · Form 4

    24 months: $21.4M sold

Transaction history

All 42 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 4, 2026CBRSDirectorOpen-market saleCode S · indirect7,110$1.5M@ $211.56Form 4
Sep 4, 2026CBRSDirectorOpen-market saleCode S · indirect21,773$4.6M@ $210.37Form 4
Sep 4, 2026CBRSDirectorOpen-market saleCode S · indirect21,117$4.4M@ $209.81Form 4
Aug 21, 2026CBRSOther acquisition or dispositionCode J · indirect34,548—Form 4
Aug 21, 2026CBRSOther acquisition or dispositionCode J · indirect67,168—Form 4
Aug 21, 2026CBRSOther acquisition or dispositionCode J · indirect18,155—Form 4
Aug 21, 2026CBRSOther acquisition or dispositionCode J · indirect287,932—Form 4
Aug 21, 2026CBRSConversion of derivativeCode C · indirect87,313—Form 4
Aug 21, 2026CBRSConversion of derivativeCode C · indirect23,970—Form 4
Aug 21, 2026CBRSConversion of derivativeCode C · indirect1,112,904—Form 4
Aug 18, 2026CBRSOther acquisition or dispositionCode J · indirect54,126—Form 4
Aug 18, 2026CBRSOther acquisition or dispositionCode J · indirect105,210—Form 4
Aug 18, 2026CBRSOther acquisition or dispositionCode J · indirect29,741—Form 4
Aug 18, 2026CBRSOther acquisition or dispositionCode J · indirect28,373—Form 4
Aug 18, 2026CBRSOther acquisition or dispositionCode J · indirect449,885—Form 4
Aug 18, 2026CBRSConversion of derivativeCode C · indirect136,426—Form 4
Aug 18, 2026CBRSConversion of derivativeCode C · indirect37,453—Form 4
Aug 18, 2026CBRSConversion of derivativeCode C · indirect1,738,913—Form 4
Aug 14, 2026CBRSOpen-market saleCode S · indirect1,091$240K@ $219.97Form 4
Aug 14, 2026CBRSOpen-market saleCode S · indirect14,323$3.1M@ $219.41Form 4
Aug 14, 2026CBRSOpen-market saleCode S · indirect11,834$2.6M@ $218.46Form 4
Aug 14, 2026CBRSOpen-market saleCode S · indirect16,671$3.6M@ $217.47Form 4
Aug 14, 2026CBRSOpen-market saleCode S · indirect6,081$1.3M@ $216.38Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect50,944—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect99,599—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect1,368—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect449,885—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect136,426—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect37,453—Form 4
Aug 14, 2026CBRSOther acquisition or dispositionCode J · indirect1,738,913—Form 4
Aug 14, 2026CBRSConversion of derivativeCode C · indirect27,285—Form 4
Aug 14, 2026CBRSConversion of derivativeCode C · indirect7,490—Form 4
Aug 14, 2026CBRSConversion of derivativeCode C · indirect347,782—Form 4
Jun 24, 2026CBRSConversion of derivativeCode C · indirect109,141—Form 4
Jun 24, 2026CBRSConversion of derivativeCode C · indirect29,963—Form 4
Jun 24, 2026CBRSConversion of derivativeCode C · indirect1,391,131—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect15,302,343—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect1,145,981—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect30,968—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect111,765—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect1,425,394—Form 4
May 15, 2026CBRSDirectorConversion of derivativeCode C · indirect12,588,235—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.