There have been 50 recent insider transactions recorded for Gossamer Bio, Inc. (GOSS), including 34 buys and 12 sells. Total insider buying was valued at $11.99M and total insider selling at $3.09M.
Notable insiders with recent activity include Hasnain Faheem, Christian Waage, Giraudo Bryan. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — GOSS
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-19 |
Hasnain Faheem |
President & CEO |
Return of Shares |
47,000 |
$12.10 |
$568.7K |
- |
| 2026-03-19 |
Christian Waage |
EVP, Tech Ops and Admin |
Return of Shares |
70,000 |
$1.36 |
$95.2K |
- |
| 2026-03-19 |
Giraudo Bryan |
COO/cfo |
Return of Shares |
211,500 |
$2.16 |
$456.84K |
- |
| 2026-03-19 |
Peterson Caryn |
EVP, Regulatory Affairs |
Return of Shares |
125,000 |
$0.84 |
$104.75K |
- |
| 2026-03-19 |
Aranda Richard |
Chief Medical Officer |
Return of Shares |
157,500 |
$1.21 |
$190.58K |
- |
| 2026-03-19 |
Smith Robert Paul Jr |
Chief Commercial Officer |
Return of Shares |
562,500 |
$2.88 |
$1.62M |
- |
| 2026-01-02 |
Hasnain Faheem |
President & CEO |
RSU Award |
280,000 |
- |
- |
837,793 |
| 2026-01-02 |
Giraudo Bryan |
COO/cfo |
RSU Award |
115,750 |
- |
- |
389,737 |
| 2026-01-02 |
Aranda Richard |
Chief Medical Officer |
RSU Award |
93,750 |
- |
- |
463,106 |
| 2026-01-02 |
Smith Robert Paul Jr |
Chief Commercial Officer |
RSU Award |
93,750 |
- |
- |
260,898 |
| 2025-06-25 |
Cox Russell J. |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-06-25 |
Daniel Thomas O |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-06-25 |
Quisel John D |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-06-25 |
Milligan Sandra |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-06-25 |
Drynan Skye |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-06-25 |
Nathan Steven D |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
115,000 |
| 2025-03-04 |
Hasnain Faheem |
President & CEO |
RSU Award |
1,540,000 |
$1.13 |
$1.74M |
1,540,000 |
| 2025-03-04 |
Christian Waage |
EVP, Tech Ops and Admin |
RSU Award |
440,000 |
$1.13 |
$497.2K |
440,000 |
| 2025-03-04 |
Giraudo Bryan |
COO/cfo |
RSU Award |
638,000 |
$1.13 |
$720.94K |
638,000 |
| 2025-03-04 |
Peterson Caryn |
EVP, Regulatory Affairs |
RSU Award |
440,000 |
$1.13 |
$497.2K |
440,000 |
| 2025-03-04 |
Aranda Richard |
Chief Medical Officer |
RSU Award |
572,000 |
$1.13 |
$646.36K |
572,000 |
| 2025-03-04 |
Smith Robert Paul Jr |
Chief Commercial Officer |
RSU Award |
572,000 |
$1.13 |
$646.36K |
572,000 |
| 2024-06-24 |
Aranda Richard |
Chief Medical Officer |
Informative Sell |
1,908 |
$0.66 |
$1.26K |
196,891 |
| 2024-06-21 |
Hasnain Faheem |
President & CEO |
Informative Buy |
372,000 |
$0.67 |
$250.28K |
5,408,073 |
| 2024-06-18 |
Giraudo Bryan |
COO/cfo |
Informative Buy |
100,000 |
$0.59 |
$59.11K |
480,010 |
| 2024-06-17 |
Smith Robert Paul Jr |
Chief Commercial Officer |
Informative Buy |
25,000 |
$0.60 |
$15.05K |
25,000 |
| 2024-06-06 |
Cox Russell J. |
Director |
RSU Award |
115,000 |
$0.60 |
$69K |
115,000 |
| 2024-06-06 |
Daniel Thomas O |
Director |
RSU Award |
115,000 |
$0.60 |
$69K |
115,000 |
| 2024-06-06 |
Quisel John D |
Director |
RSU Award |
115,000 |
$0.60 |
$69K |
115,000 |
| 2024-06-06 |
Milligan Sandra |
Director |
RSU Award |
115,000 |
$0.60 |
$69K |
115,000 |
| 2024-03-27 |
Hasnain Faheem |
President & CEO |
Informative Sell |
23,172 |
$1.16 |
$26.77K |
120,293 |
| 2024-03-27 |
Christian Waage |
EVP, Tech Ops and Admin |
Informative Sell |
6,430 |
$1.16 |
$7.43K |
585,934 |
| 2024-03-27 |
Giraudo Bryan |
COO/cfo |
Informative Sell |
6,430 |
$1.16 |
$7.43K |
92,737 |
| 2024-03-18 |
Peterson Caryn |
EVP, Regulatory Affairs |
Informative Sell |
4,018 |
$1.33 |
$5.34K |
49,833 |
| 2024-03-18 |
Aranda Richard |
Chief Medical Officer |
Informative Sell |
4,018 |
$1.33 |
$5.34K |
198,799 |
| 2024-03-11 |
Drynan Skye |
Director |
Unknown |
- |
- |
- |
- |
| 2024-03-11 |
Drynan Skye |
Director |
RSU Award |
230,000 |
$1.34 |
$308.2K |
230,000 |
| 2024-03-11 |
Nathan Steven D |
Director |
Unknown |
- |
- |
- |
- |
| 2024-03-11 |
Nathan Steven D |
Director |
RSU Award |
230,000 |
$1.34 |
$308.2K |
230,000 |
| 2024-01-02 |
Hasnain Faheem |
President & CEO |
RSU Award |
1,312,500 |
$0.97 |
$1.27M |
1,312,500 |
| 2024-01-02 |
Christian Waage |
EVP, Tech Ops and Admin |
RSU Award |
375,000 |
$0.97 |
$363.75K |
375,000 |
| 2024-01-02 |
Giraudo Bryan |
COO/cfo |
RSU Award |
543,750 |
$0.97 |
$527.44K |
543,750 |
| 2024-01-02 |
Peterson Caryn |
EVP, Regulatory Affairs |
RSU Award |
375,000 |
$0.97 |
$363.75K |
375,000 |
| 2024-01-02 |
Aranda Richard |
Chief Medical Officer |
RSU Award |
487,500 |
$0.97 |
$472.88K |
487,500 |
| 2023-12-04 |
Smith Robert Paul Jr |
Officer |
Unknown |
- |
- |
- |
- |
| 2023-12-04 |
Smith Robert Paul Jr |
Chief Commercial Officer |
RSU Award |
1,500,000 |
$0.97 |
$1.45M |
1,500,000 |
| 2023-11-28 |
Quisel John D |
Director |
Unknown |
- |
- |
- |
- |
| 2023-11-28 |
Quisel John D |
Director |
RSU Award |
230,000 |
$0.69 |
$158.93K |
230,000 |
| 2023-11-20 |
Hasnain Faheem |
President & CEO |
RSU Award |
437,500 |
$0.84 |
$366.63K |
437,500 |
| 2023-11-20 |
Christian Waage |
EVP, Tech Ops and Admin |
RSU Award |
125,000 |
$0.84 |
$104.75K |
125,000 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
