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© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.

Home/Companies/Gossamer Bio, Inc.

Gossamer Bio, Inc.

138 insider trades tracked

GOSS

Insider trades

138

Bought (open market)

$50K

Sold (open market)

$0

Acquired (grants)

$191K

Unique insiders

12

Recent insider trades

Most recent Form 4 filings for Gossamer Bio, Inc..

Smith Robert Paul JRgranted5,800,051 shares ofGOSSat $0Aug 24 · filed Aug 26Details
Giraudo Bryangranted5,800,051 shares ofGOSSat $0Aug 24 · filed Aug 26Details
Giraudo Bryangranted25 shares ofGOSSat $999.999$25KAug 24 · filed Aug 26

Insiders at this company

Executives and directors who have filed Form 4s.

Peterson Caryn26 trades
Giraudo Bryan25 trades
Aranda Richard25 trades
Hasnain Faheem23 trades
Christian Waage22 trades
Smith Robert Paul JR8 trades
Drynan Skye2 trades
Nathan Steven D2 trades

Explore insider screeners

Latest CEO & CFO Purchases Latest CEO & CFO Sales Director Purchases Officer Purchases Top Purchases This Week Top Sales This Week Top Officer Buys (Month)10% Owner Filings 10b5-1 Planned Trades Discretionary Trades Buy/Sell Ratios Politician-Insider Overlap

Hasnain Faheemgranted5,800,051 shares ofGOSSat $0Aug 24 · filed Aug 26Details

Hasnain Faheemgranted166 shares ofGOSSat $999.999$166KAug 24 · filed Aug 26Details

Peterson Caryngranted5,800,051 shares ofGOSSat $0Aug 24 · filed Aug 26Details

Christian Waagegranted2,900,026 shares ofGOSSat $0Aug 24 · filed Aug 26Details

Nathan Steven Dgranted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Drynan Skyegranted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Milligan Sandragranted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Quisel John Dgranted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Daniel Thomas Ogranted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Cox Russell J.granted115,000 shares ofGOSSat $0Jun 4 · filed Jun 5Details

Smith Robert Paul JRgranted572,000 shares ofGOSSMar 19 · filed Mar 20Details

Smith Robert Paul JRgranted562,500 shares ofGOSSMar 19 · filed Mar 20Details

Smith Robert Paul JRtraded572,000 shares ofGOSSMar 19 · filed Mar 20Details

Smith Robert Paul JRtraded562,500 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted30,000 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted9,167 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted22,784 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted40,000 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted20,000 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted126,667 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted157,500 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted162,500 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted487,500 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted572,000 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardgranted562,500 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardtraded30,000 shares ofGOSSMar 19 · filed Mar 20Details

Aranda Richardtraded9,167 shares ofGOSSMar 19 · filed Mar 20Details

View all trades for GOSS →

Milligan Sandra

2 trades

Cox Russell J.1 trades

Daniel Thomas O1 trades

Quisel John D1 trades