Gossamer Bio, Inc.
GOSS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001728117
No open-market purchases or sales by Gossamer Bio, Inc. insiders were filed in the last 90 days; 170 institutions reported holding it in 13F filings for Q2 2026, worth $60.8M in total; HHLR Advisors (Hillhouse) is the only superinvestor holding it.
13F holders, Q1 2025
Institutional positions in Gossamer Bio, Inc. as of Mar 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 119
- +15 vs. Q4 2024
- Shares held
- 169.6M
- −1.60M (−0.9%) vs. Q4 2024
- Total value
- $186.9M
- +$32.0M (+20.6%) vs. Q4 2024
- New holders
- 24
- 35 more added
- Sold out
- 9
- 30 more reduced
1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GOSS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 170 | $60.8M |
| Q1 2026 | 185 | $56.3M |
| Q4 2025 | 195 | $573.4M |
| Q3 2025 | 164 | $473.7M |
| Q2 2025 | 124 | $218.0M |
| Q1 2025 | 119 | $186.9M |
| Q4 2024 | 105 | $155.0M |
| Q3 2024 | 100 | $172.6M |
| Q2 2024 | 94 | $164.7M |
| Q1 2024 | 109 | $233.5M |
| Q4 2023 | 98 | $192.0M |
| Q3 2023 | 96 | $171.2M |
| Q2 2023 | 99 | $74.4M |
| Q1 2023 | 111 | $97.9M |
| Q4 2022 | 120 | $225.1M |
| Q3 2022 | 160 | $1.02B |
| Q2 2022 | 129 | $533.2M |
| Q1 2022 | 141 | $519.8M |
| Q4 2021 | 133 | $664.9M |
| Q3 2021 | 128 | $687.7M |
| Q2 2021 | 115 | $431.1M |
| Q1 2021 | 123 | $501.9M |
Institutions, Q1 2025
Shares, value and share of portfolio for each institution holding Gossamer Bio, Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 3,072,773 | $3.38M | 0.00% | +43,564+1.4% | Added |
| Rock Springs Capital Management LP | 3,266,960 | $3.59M | 0.21% | 00.0% | Unchanged |
| CI Private Wealth, LLC | 3,391,483 | $3.73M | 0.01% | 00.0% | Unchanged |
| Eversept Partners, LP | 3,896,841 | $4.29M | 0.49% | −1,081,617−21.7% | Reduced |
| Alyeska Investment Group, L.P. | 4,163,734 | $4.58M | 0.02% | −4,644,780−52.7% | Reduced |
| Opaleye Management Inc. | 4,287,415 | $4.72M | 1.05% | −202,585−4.5% | Reduced |
| Monaco Asset Management SAM | 4,849,134 | $5.33M | 2.70% | −522,507−9.7% | Reduced |
| HHLR Advisors, Ltd.SuperinvestorHHLR Advisors (Hillhouse) | 4,974,041 | $5.47M | 0.15% | 00.0% | Unchanged |
| Siren, L.L.C. | 5,208,968 | $5.73M | 0.32% | 00.0% | Unchanged |
| 683 Capital Management, LLC | 6,100,000 | $6.71M | 0.68% | −875,000−12.5% | Reduced |
| Samsara BioCapital, LLC | 6,130,268 | $6.74M | 1.20% | 00.0% | Unchanged |
| Palo Alto Investors LP | 6,276,893 | $6.90M | 1.31% | −2000.0% | Reduced |
| Silverarc Capital Management, LLC | 6,320,684 | $6.95M | 1.45% | +148,837+2.4% | Added |
| Acadian Asset Management LLC | 6,358,113 | $6.99M | 0.02% | +1,253,353+24.6% | Added |
| FMR LLC | 7,592,980 | $8.35M | 0.00% | −340,020−4.3% | Reduced |
| ARCH Venture Management, LLC | 8,055,916 | $8.78M | 4.26% | 00.0% | Unchanged |
| Vanguard Group Inc | 10,083,881 | $11.1M | 0.00% | +49,732+0.5% | Added |
| NEA Management Company, LLC | 18,093,034 | $19.9M | 1.53% | 00.0% | Unchanged |
| Octagon Capital Advisors LP | 18,350,000 | $20.2M | 4.39% | 00.0% | Unchanged |
| Aster Capital Management (DIFC) Ltd | 0 | $0 | 0.00% | −134,563−100.0% | Sold out |
| Fullcircle Wealth LLC | 0 | $0 | 0.00% | −47,954−100.0% | Sold out |
| Callan Capital, LLC | 0 | $0 | 0.00% | −30,000−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −25,036−100.0% | Sold out |
| Stephenson National Bank & Trust | 0 | $0 | 0.00% | −25,000−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −21,339−100.0% | Sold out |
| Wolverine Trading, LLC | 0 | $0 | 0.00% | −18,912−100.0% | Sold out |
| R Squared Ltd | 0 | $0 | 0.00% | −3,360−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −400−100.0% | Sold out |
| Merriman Wealth Management, LLC | – | – | – | – | Not filed |