Form 4 holding
COO/CFO
Gossamer Bio, Inc.
- Security class
- Common Stock
- Shares / value
- 480,010
- Estimated value
- $1,737,636
- Report date
- 02 Jan 2026
- Price
- $3.62
- Ownership
- By family trust
Bryan Giraudo - COO/CFO at Gossamer Bio, Inc.
Issuer-level insider activity
- Role
- Coo/Cfo
- Issuer ticker
- GOSS on Nasdaq
- Entity type
- Individual
- Source filing history
- Open source filing history
Identity
Names, identifiers, and filing context for this profile.
1 identity field
Source evidence
Original filing metadata and source links for verification.
1 source field
No buys or sells have been reported by Bryan Giraudo since 28 Sep 2025
Reported holdings for Bryan Giraudo in Gossamer Bio, Inc.
Form 4 holding
COO/CFO
Gossamer Bio, Inc.
- Security class
- Common Stock
- Shares / value
- 389,737
- Estimated value
- $1,410,847
- Report date
- 02 Jan 2026
- Price
- $3.62
- Ownership
- Direct
Form 4 holding
COO/CFO
Gossamer Bio, Inc.
- Security class
- Stock Option (Right to Buy)
- Shares / value
- 5,800,051
- Estimated value
- Report date
- 24 Aug 2026
- Price
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
COO/CFO
Gossamer Bio, Inc.
- Security class
- Pre-Funded Warrant (Right to Buy)
- Shares / value
- 25
- Estimated value
- Report date
- 24 Aug 2026
- Price
- Ownership
- By Family Trust
- Underlying class
- Series A-1 Preferred Stock
- Underlying amount
Transaction history for Bryan Giraudo in Gossamer Bio, Inc.
| Sym | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares after | Date | Ownership |
|---|
* marks a reported price that did not pass the local price check.