2 institutions reported holding $181,087 of GOSSAMER BIO INC (GOSS) in SEC 13F filings for 2026-06-30. Largest institutional holders: Hennion & Walsh Asset Management, Inc. ($180,881), GAMMA Investing LLC ($206). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Hennion & Walsh Asset Management, Inc. | $180,881 | 1.1M | Added |
| 2 | GAMMA Investing LLC | $206 | 1,250 | New |
Source: SEC Form 13F filings · as of 2026-06-30