13F Pro

SEC Form 4 reporting owner

Ciongoli Gregory Austin

Ciongoli Gregory Austin has filed 8 Form 4 transactions reported between January 12, 2026 and September 23, 2026, as Director of Gossamer Bio, Inc., a reporting owner of REGENXBIO Inc., a reporting owner of Atara Biotherapeutics, Inc. and a reporting owner of Zymeworks Inc..

Name as filed: Ciongoli Gregory Austin

Open-market buys, 24 mo
$949K
2 lines
Open-market sales, 24 mo
None
reported
Companies
4
with Form 4 filings
Latest transaction
Sep 23, 2026
transaction date

Roles and reported holdings

  • GOSSGossamer Bio, Inc.
    Sep 23, 2026

    Director

    No common-stock holding reported on a purchase, sale, gift or withholding line.

  • RGNXREGENXBIO Inc.
    Aug 25, 2026 – Aug 27, 2026

    Reporting owner

    Held directly118,035 sh as of Aug 27, 2026 · Form 4

    24 months: $949K bought

  • ATRAAtara Biotherapeutics, Inc.
    Jun 9, 2026

    Reporting owner

    No common-stock holding reported on a purchase, sale, gift or withholding line.

  • ZYMEZymeworks Inc.
    Jan 12, 2026

    Reporting owner

    No common-stock holding reported on a purchase, sale, gift or withholding line.

Transaction history

All 8 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Sep 23, 2026GOSSDirectorGrant or awardCode A · direct30,000—Form 4
Aug 27, 2026RGNXOpen-market purchaseCode P · direct53,407$500K@ $9.36Form 4
Aug 26, 2026RGNXOpen-market purchaseCode P · direct49,196$450K@ $9.14Form 4
Aug 25, 2026RGNXGrant or awardCode A · direct69,609—Form 4
Aug 25, 2026RGNXGrant or awardCode A · direct15,432—Form 4
Jun 9, 2026ATRAGrant or awardCode A · direct12,000—Form 4
Jan 12, 2026ZYMEGrant or awardCode A · direct7,700—Form 4
Jan 12, 2026ZYMEGrant or awardCode A · direct11,500—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.