Insider Transactions Reported by 16 Insiders of Gossamer Bio, Inc.

Symbol
GOSS on Nasdaq
Location
San Diego, CA

Insiders trading volume in the past year

Gossamer Bio, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Faheem Hasnain President & CEO, Director $22,610,034 02 Jan 2026
Christian Waage EVP, Tech Ops and Admin $3,193,472 02 Jan 2026
Bryan Giraudo Coo/Cfo $3,148,483 02 Jan 2026
Richard Aranda Chief Medical Officer $1,685,634 02 Jan 2026
Robert Paul Smith Jr. Chief Commercial Officer $1,034,950 02 Jan 2026
Caryn Peterson EVP, Regulatory Affairs $938,785 02 Jan 2026
Sandra Milligan Director $111,456 +$50,016 +81% 19 Aug 2025
Laura Carter Chief Scientific Officer $60,088 20 Mar 2023
Steven D. Nathan Director 25 Jun 2025
John D. Quisel Director 25 Jun 2025
Daniel Thomas O Director 25 Jun 2025
Kristina M. Burow. Director 08 Jun 2023
Russell J. Cox Director 25 Jun 2025
Joshua H. Bilenker Director 09 Jun 2022
Renee D. Gala Director 08 Jun 2023
Skye Drynan Director 25 Jun 2025

Recent Insider Transactions by Companies or Individuals for Gossamer Bio, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Faheem Hasnain GOSS Common Stock Award 50.2% 280,000 837,793 02 Jan 2026 Direct
Faheem Hasnain GOSS Stock Option (Right to Buy) Award 1,680,000 1,680,000 02 Jan 2026 Direct
Bryan Giraudo GOSS Common Stock Award 42.2% 115,750 389,737 02 Jan 2026 Direct
Bryan Giraudo GOSS Stock Option (Right to Buy) Award 693,750 693,750 02 Jan 2026 Direct
Robert Paul Smith Jr. GOSS Common Stock Award 56.1% 93,750 260,898 02 Jan 2026 Direct
Robert Paul Smith Jr. GOSS Stock Option (Right to Buy) Award 562,500 562,500 02 Jan 2026 Direct
Richard Aranda GOSS Common Stock Award 25.4% 93,750 463,106 02 Jan 2026 Direct
Richard Aranda GOSS Stock Option (Right to Buy) Award 562,500 562,500 02 Jan 2026 Direct
Caryn Peterson GOSS Common Stock Award 48.3% 84,500 259,333 02 Jan 2026 Direct
Caryn Peterson GOSS Stock Option (Right to Buy) Award 506,250 506,250 02 Jan 2026 Direct
Waage Christian GOSS Common Stock Award 11.6% 84,500 814,061 02 Jan 2026 Direct
Waage Christian GOSS Stock Option (Right to Buy) Award 506,250 506,250 02 Jan 2026 Direct
Robert Paul Smith Jr. GOSS Common Stock Award 162,500 162,500 01 Oct 2025 Direct
Waage Christian GOSS Common Stock Award 21.3% 125,000 710,934 01 Oct 2025 Direct
Bryan Giraudo GOSS Common Stock Award 195.4% 181,250 273,987 01 Oct 2025 Direct
Richard Aranda GOSS Common Stock Award 78.6% 162,500 369,356 01 Oct 2025 Direct
Faheem Hasnain GOSS Common Stock Award 363.7% 437,500 557,793 01 Oct 2025 Direct
Caryn Peterson GOSS Common Stock Award 250.8% 125,000 174,833 01 Oct 2025 Direct
Sandra Milligan GOSS Common Stock Purchase 81.4% $50,016 $1.92 26,050 58,050 19 Aug 2025 Direct
Daniel Thomas O GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
Steven D. Nathan GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
Russell J. Cox GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
John D. Quisel GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
Sandra Milligan GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
Skye Drynan GOSS Stock Option (Right to Buy) Award 115,000 115,000 25 Jun 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.