Gossamer Bio (GOSS)
Develops inhaled seralutinib for pulmonary arterial hypertension and PH-ILD.
$11.89
After hours+0.09 (+0.76%)
At close$11.80(+4.61%)
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13F · 13D/G · Form 4
| Institutions | 76.02% | 4.65M shares | |
|---|---|---|---|
| 176 holders · as of Jun 30, 2026 | |||
| Insiders | 1.55% | 94.7K shares | |
| 7 holders · as of Jan 5, 2026 | |||
| Other | 22.43% | 1.37M shares | |
| remainder | |||
6.11M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
176 holders · 371.60M shares · 28 new positions · 92 increased · 45 reduced · 47 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| D. E. Shaw & Co., Inc. | 40.96M | 670.30% | +40.57M | Aug 14, 2026 |
| 683 Capital Management, LLC | 39.20M | 641.49% | +34.20M | Aug 14, 2026 |
| Deepcurrents Investment Group LLC | 37.67M | 616.39% | +37.67Mnew | Aug 14, 2026 |
| Context Capital Management, LLC | 28.95M | 473.71% | +28.95Mnew | Jul 23, 2026 |
| Worth Venture Partners, LLC | 25.02M | 409.42% | +25.02Mnew | Aug 10, 2026 |
| AQR Capital Management LLC | 15.63M | 255.79% | +5.50M | Aug 14, 2026 |
| Gsa Capital Partners LLP | 14.99M | 245.26% | +11.73M | Aug 6, 2026 |
| Wolverine Asset Management LLC | 12.89M | 211.02% | +12.89Mnew | Aug 10, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| 683 Capital Management, LLC | 9.99% | 13G | Jun 11, 2026 | |
| Context Capital Management, LLC | 9.90% | 13G | Jun 9, 2026 | |
| DeepCurrents Investment Group LLC | 7.70% | 13G | Jun 11, 2026 | |
| BlackRock, Inc. | 6.50% | 13G | Jan 21, 2026 | |
| D. E. Shaw & Co., L.P.incl. D. E. Shaw Valence Portfolios, L.L.C., David E. Shaw +1 more | 6.00% | 13D | Aug 24, 2026 | |
| Opaleye Management Inc. | 5.10% | 13G | Jul 29, 2026 |
Form 4
Latest trades
No open-market trades in the last 12 months.
House and Senate disclosures
Not reported.