Gossamer Bio Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Gossamer Bio Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- GOSS
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001728117
Board of directors
-
Faheem Hasnain · Director · President & CEOSince 2023
-
Gregory Austin Ciongoli · DirectorSince 2026
-
John D. Quisel · DirectorSince 2023
- Since 2023
-
Renee D. Gala · DirectorSince 2023
-
Russell J. Cox · DirectorSince 2023
-
Sandra Milligan · DirectorSince 2023
-
Skye Drynan · DirectorSince 2024
-
Steven D. Nathan · DirectorSince 2024
-
Thomas O. Daniel · DirectorSince 2023
Chief executives
Faheem Hasnain
· President & CEO
Dates unknown
Board connections
7 of this board's directors also sit on 12 other boards.
- via Russell J. Cox and Sandra Milligan
- via Gregory Austin Ciongoli
- via Kristina Burow
- via Kristina Burow
- via Renee D. Gala
- via John D. Quisel
- via Kristina Burow
- via Faheem Hasnain
- via Kristina Burow
- via Gregory Austin Ciongoli
- via Kristina Burow
- via Gregory Austin Ciongoli
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jan 2, 2026 | Faheem Hasnain Director, Officer (President & CEO) | Grant or award | +280,000 | — | — |
| Jan 2, 2026 | Bryan Giraudo Officer (COO/CFO) | Grant or award | +115,750 | — | — |
| Jan 2, 2026 | Smith Robert Paul JR Officer (Chief Commercial Officer) | Grant or award | +93,750 | — | — |
| Jan 2, 2026 | Aranda Richard Officer (Chief Medical Officer) | Grant or award | +93,750 | — | — |
| Jan 2, 2026 | Peterson Caryn Officer (EVP, Regulatory Affairs) | Grant or award | +84,500 | — | — |
| Jan 2, 2026 | Waage Christian Officer (EVP, Tech Ops and Admin) | Grant or award | +84,500 | — | — |
| Oct 1, 2025 | Smith Robert Paul JR Officer (Chief Commercial Officer) | Grant or award | +162,500 | — | — |
| Oct 1, 2025 | Waage Christian Officer (EVP, Tech Ops and Admin) | Grant or award | +125,000 | — | — |
| Oct 1, 2025 | Bryan Giraudo Officer (COO/CFO) | Grant or award | +181,250 | — | — |
| Oct 1, 2025 | Aranda Richard Officer (Chief Medical Officer) | Grant or award | +162,500 | — | — |
| Oct 1, 2025 | Faheem Hasnain Director, Officer (President & CEO) | Grant or award | +437,500 | — | — |
| Oct 1, 2025 | Peterson Caryn Officer (EVP, Regulatory Affairs) | Grant or award | +125,000 | — | — |
| Aug 19, 2025 | Sandra Milligan Director | Open-market purchase | +26,050 | $1.92 | $50,016 |
| Jun 24, 2024 | Aranda Richard Officer (Chief Medical Officer) | Open-market sale | −1,908 | $0.66 | $1,259 |
| Jun 21, 2024 | Faheem Hasnain Director, Officer (President & CEO) | Open-market purchase | +372,000 | $0.67 | $249,240 |
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