13F Pro

SEC Form 4 reporting owner

Giraudo Bryan

Giraudo Bryan has filed 21 Form 4 transactions reported between January 2, 2026 and August 24, 2026, as COO/CFO of Gossamer Bio, Inc. and Director of Protagonist Therapeutics, Inc.

Name as filed: Giraudo Bryan

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$4.7M
3 lines
Companies
2
with Form 4 filings
Latest transaction
Aug 24, 2026
transaction date

Roles and reported holdings

  • GOSSGossamer Bio, Inc.
    Jan 2, 2026 – Aug 24, 2026

    COO/CFO

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

  • PTGXProtagonist Therapeutics, Inc
    Jan 2, 2026 – May 8, 2026

    Director

    Held directly12,695 sh as of May 8, 2026 · Form 4
    Held indirectly (latest line)0 sh as of May 8, 2026 · Form 4

    24 months: $4.7M sold

Transaction history

All 21 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Aug 24, 2026GOSSCOO/CFOGrant or awardCode A · direct5,800,051—Form 4
Aug 24, 2026GOSSCOO/CFOGrant or awardCode A · indirect25$25K@ $1000.00Form 4
May 8, 2026PTGXDirectorOpen-market saleCode S · direct5,130$513K@ $100.00Form 4
May 8, 2026PTGXDirectorOpen-market saleCode S · indirect6,000$600K@ $100.00Form 4
May 7, 2026PTGXDirectorOpen-market saleCode S · direct36,000$3.6M@ $100.14Form 4
May 7, 2026PTGXDirectorOption exerciseCode M · direct12,000$84K@ $6.98Form 4
May 7, 2026PTGXDirectorOption exerciseCode M · direct24,000$155K@ $6.45Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct96,667—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct47,667—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct60,000—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct100,000—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct176,667—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct211,500—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct181,250—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct543,750—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct638,000—Form 4
Mar 19, 2026GOSSCOO/CFODisposition to issuerCode D · direct693,750—Form 4
Jan 2, 2026PTGXDirectorGrant or awardCode A · direct3,762—Form 4
Jan 2, 2026PTGXDirectorGrant or awardCode A · direct2,695—Form 4
Jan 2, 2026GOSSCOO/CFOGrant or awardCode A · direct693,750—Form 4
Jan 2, 2026GOSSCOO/CFOGrant or awardCode A · direct115,750—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.