Gossamer Bio, Inc. (GOSS) has 20 known insider and institutional holders on record. The largest holder is Omega Fund V, L.P. with 6,553,416 shares. Other notable holders include Hasnain Faheem and Aranda Richard.
Over the last 12 months, insiders have made 16 transactions in GOSS stock — 10 buys (valued at $938.4K) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
GOSS Insider Ownership
Top Holder
Omega Fund V, L.P.
6,553,416 shares
Buys (12 mo)
10
$938.4K value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Omega Fund V, L.p. |
10 Percent Owner |
6,553,416 |
2019-09-23 |
|
| 2 |
Hasnain Faheem |
President & CEO |
837,793 |
2026-01-05 |
|
| 3 |
Aranda Richard |
Chief Medical Officer |
463,106 |
2026-01-05 |
|
| 4 |
Christian Waage |
EVP, Tech Ops and Admin |
440,000 |
2025-03-06 |
|
| 5 |
Peterson Caryn |
EVP, Regulatory Affairs |
440,000 |
2025-03-06 |
|
| 6 |
Giraudo Bryan |
COO/cfo |
389,737 |
2026-01-05 |
|
| 7 |
Smith Robert Paul Jr |
Chief Commercial Officer |
260,898 |
2026-01-05 |
|
| 8 |
Salter-cid Luisa |
Chief Scientific Officer |
206,065 |
2021-03-25 |
|
| 9 |
Gujrathi Sheila |
President & CEO |
189,500 |
2020-02-19 |
|
| 10 |
Drynan Skye |
Director |
115,000 |
2025-06-26 |
|
| 11 |
Quisel John D |
Director |
115,000 |
2025-06-26 |
|
| 12 |
Nathan Steven D |
Director |
115,000 |
2025-06-26 |
|
| 13 |
Daniel Thomas O |
Director |
115,000 |
2025-06-26 |
|
| 14 |
Milligan Sandra |
Director |
115,000 |
2025-06-26 |
|
| 15 |
Cox Russell J. |
Director |
115,000 |
2025-06-26 |
|
| 16 |
Carter Laura |
Chief Scientific Officer |
76,263 |
2023-03-20 |
|
| 17 |
Dupont Jakob |
Chief Medical Officer |
46,500 |
2020-02-19 |
|
| 18 |
Gala Renee D |
Director |
35,000 |
2023-06-09 |
|
| 19 |
Burow Kristina |
Director |
35,000 |
2023-06-09 |
|
| 20 |
Bilenker Joshua H. |
Director |
30,000 |
2022-07-15 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-19 |
Smith Robert Paul Jr |
Chief Commercial Officer |
Return of Shares |
562,500 |
$2.88 |
$1.62M |
| 2026-03-19 |
Aranda Richard |
Chief Medical Officer |
Return of Shares |
157,500 |
$1.21 |
$190.58K |
| 2026-03-19 |
Peterson Caryn |
EVP, Regulatory Affairs |
Return of Shares |
125,000 |
$0.84 |
$104.75K |
| 2026-03-19 |
Giraudo Bryan |
COO/cfo |
Return of Shares |
211,500 |
$2.16 |
$456.84K |
| 2026-03-19 |
Christian Waage |
EVP, Tech Ops and Admin |
Return of Shares |
70,000 |
$1.36 |
$95.2K |
| 2026-03-19 |
Hasnain Faheem |
President & CEO |
Return of Shares |
47,000 |
$12.10 |
$568.7K |
| 2026-01-02 |
Smith Robert Paul Jr |
Chief Commercial Officer |
RSU Award |
93,750 |
- |
- |
| 2026-01-02 |
Aranda Richard |
Chief Medical Officer |
RSU Award |
93,750 |
- |
- |
| 2026-01-02 |
Giraudo Bryan |
COO/cfo |
RSU Award |
115,750 |
- |
- |
| 2026-01-02 |
Hasnain Faheem |
President & CEO |
RSU Award |
280,000 |
- |
- |
| 2025-06-25 |
Nathan Steven D |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
| 2025-06-25 |
Drynan Skye |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
| 2025-06-25 |
Milligan Sandra |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
| 2025-06-25 |
Quisel John D |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
| 2025-06-25 |
Daniel Thomas O |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
| 2025-06-25 |
Cox Russell J. |
Director |
RSU Award |
115,000 |
$1.36 |
$156.4K |
