Gossamer Bio, Inc. GOSS
We take great care to ensure that the data presented and summarized in this overview for Gossamer Bio, Inc. is accurate and up-to-date, based on a comprehensive analysis of 13F filing forms for institutional ownership and form 4 filings for insider transactions. Please note that this data may differ from other sources and should not be relied upon as the sole basis for investment decisions.
Top Institutions Holding GOSS
View all-
Nea Management Company, LLC Timonium, MD18.1MShares$49 Million2.97% of portfolio
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Octagon Capital Advisors LP New York, NY17.1MShares$46.2 Million14.61% of portfolio
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Vanguard Group Inc Valley Forge, PA12MShares$32.5 Million0.0% of portfolio
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Arch Venture Management, LLC Chicago, IL8.06MShares$21.8 Million9.24% of portfolio
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Samsara Bio Capital, LLC Palo Alto, CA6.13MShares$16.6 Million6.11% of portfolio
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Palo Alto Investors LP Palo Alto, CA5.46MShares$14.8 Million2.85% of portfolio
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Siren, L.L.C. New York, NY5.21MShares$14.1 Million0.54% of portfolio
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683 Capital Management, LLC New York, NY5.06MShares$13.7 Million0.79% of portfolio
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Acadian Asset Management LLC Boston, MA5.01MShares$13.6 Million0.02% of portfolio
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Hhlr Advisors, Ltd. Grand Cayman, E94.97MShares$13.5 Million0.39% of portfolio
Latest Institutional Activity in GOSS
Top Purchases
Top Sells
About GOSS
Gossamer Bio, Inc., a clinical-stage biopharmaceutical company, focuses on discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology in the United States. The company is developing GB002, an inhaled, small molecule, platelet-derived growth factor receptor, or PDGFR, colonystimulating factor 1 receptor, or CSF1R, and c-KIT inhibitor for the treatment of pulmonary arterial hypertension; GB004, a gut-targeted, oral small molecule for the treatment of inflammatory bowel disease; GB5121, an oral, irreversible, covalent, small molecule inhibitor of Bruton's Tyrosine Kinase for the treatment of primary central nervous system lymphoma; and GB7208, an oral, small molecule, BTK inhibitor for the treatment of multiple sclerosis. It has license agreements with Pulmokine, Inc. to develop and commercialize GB002 and related backup compounds; and Aerpio Pharmaceuticals, Inc. to develop and commercialize GB004 and related compounds. The company was formerly known as FSG, Bio, Inc. and changed its name to Gossamer Bio, Inc. in 2017. Gossamer Bio, Inc. was incorporated in 2015 and is headquartered in San Diego, California.
Insider Transactions at GOSS
Insider Transaction List
View all| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Oct 01
2025
|
Caryn Peterson EVP, Regulatory Affairs |
BUY
Grant, award, or other acquisition
|
Direct |
125,000
+41.69%
|
-
|
|
Oct 01
2025
|
Faheem Hasnain President & CEO |
BUY
Grant, award, or other acquisition
|
Direct |
437,500
+43.96%
|
-
|
|
Oct 01
2025
|
Richard Aranda Chief Medical Officer |
BUY
Grant, award, or other acquisition
|
Direct |
162,500
+30.55%
|
-
|
|
Oct 01
2025
|
Bryan Giraudo COO/CFO |
BUY
Grant, award, or other acquisition
|
Direct |
181,250
+39.81%
|
-
|
|
Oct 01
2025
|
Waage Christian EVP, Tech Ops and Admin |
BUY
Grant, award, or other acquisition
|
Direct |
125,000
+14.95%
|
-
|
|
Oct 01
2025
|
Robert Paul Smith Jr Chief Commercial Officer |
BUY
Grant, award, or other acquisition
|
Direct |
162,500
+50.0%
|
-
|
|
Aug 19
2025
|
Sandra Milligan Director |
BUY
Open market or private purchase
|
Direct |
26,050
+30.98%
|
$26,050
$1.92 P/Share
|
|
Jun 24
2024
|
Richard Aranda Chief Medical Officer |
SELL
Open market or private sale
|
Direct |
1,908
-0.96%
|
$0
$0.66 P/Share
|
|
Jun 21
2024
|
Faheem Hasnain President & CEO |
BUY
Open market or private purchase
|
Indirect |
372,000
+6.44%
|
$0
$0.67 P/Share
|
|
Jun 18
2024
|
Bryan Giraudo COO/CFO |
BUY
Open market or private purchase
|
Indirect |
100,000
+17.24%
|
$0
$0.59 P/Share
|
|
Jun 17
2024
|
Robert Paul Smith Jr Chief Commercial Officer |
BUY
Open market or private purchase
|
Indirect |
25,000
+50.0%
|
$0
$0.6 P/Share
|
|
Mar 27
2024
|
Waage Christian EVP, Tech Ops and Admin |
SELL
Open market or private sale
|
Direct |
6,430
-1.09%
|
$6,430
$1.16 P/Share
|
|
Mar 27
2024
|
Bryan Giraudo COO/CFO |
SELL
Open market or private sale
|
Direct |
6,430
-6.48%
|
$6,430
$1.16 P/Share
|
|
Mar 27
2024
|
Faheem Hasnain President & CEO |
SELL
Open market or private sale
|
Direct |
23,172
-16.15%
|
$23,172
$1.16 P/Share
|
|
Mar 18
2024
|
Caryn Peterson EVP, Regulatory Affairs |
SELL
Open market or private sale
|
Direct |
4,018
-7.46%
|
$4,018
$1.33 P/Share
|
|
Mar 18
2024
|
Richard Aranda Chief Medical Officer |
SELL
Open market or private sale
|
Direct |
4,018
-1.98%
|
$4,018
$1.33 P/Share
|
|
Nov 15
2023
|
Sandra Milligan Director |
BUY
Open market or private purchase
|
Indirect |
32,000
+50.0%
|
$0
$0.79 P/Share
|
|
Nov 13
2023
|
Bryan Giraudo COO/CFO |
BUY
Open market or private purchase
|
Indirect |
200,000
+34.48%
|
$0
$0.56 P/Share
|
|
Jul 24
2023
|
Waage Christian EVP, Tech Ops and Admin |
BUY
Grant, award, or other acquisition
|
Indirect |
13,504
+22.74%
|
$13,504
$1.82 P/Share
|
|
Jul 24
2023
|
Faheem Hasnain President & CEO |
BUY
Grant, award, or other acquisition
|
Indirect |
540,176
+9.69%
|
$540,176
$1.82 P/Share
|
Last 12 Months Summary
| Grant, award, or other acquisition | 1.19M shares |
|---|---|
| Open market or private purchase | 26.1K shares |