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GOSSAMER BIO (GOSS)
NASDAQ
$9.44-$0.35 (-3.58%)
Price as of Oct 22, 2026 7:30 PM EDT- $59.9MMarket Cap
- -94.46%1-Year Change
- BiotechnologyIndustry
GOSSAMER BIO (GOSS)
$9.44-$0.35 (-3.58%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
D. E. SHAW & CO., INC. | 670.30% | 41.0M | +40.6M (+99.05%) | Jun 30, 2026 |
683 CAPITAL MANAGEMENT, LLC | 641.49% | 39.2M | +34.2M (+87.24%) | Jun 30, 2026 |
DEEPCURRENTS INVESTMENT GROUP LLC | 616.39% | 37.7M | +37.7M (+100.00%) | Jun 30, 2026 |
CONTEXT CAPITAL MANAGEMENT, LLC | 473.71% | 28.9M | +28.9M (+100.00%) | Jun 30, 2026 |
WORTH VENTURE PARTNERS, LLC | 409.42% | 25.0M | +25.0M (+100.00%) | Jun 30, 2026 |
AQR CAPITAL MANAGEMENT LLC | 255.79% | 15.6M | +5.5M (+35.21%) | Jun 30, 2026 |
GSA CAPITAL PARTNERS LLP | 245.26% | 15.0M | +11.7M (+78.29%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
BlackRock Health Sciences Trust II | 0.99% | 60,195 | 0 (0.00%) | Jun 30, 2026 |
Invesco Exchange-Traded Self-Indexed Fund Trust | 0.93% | 57,126 | +26,409 (+46.23%) | May 31, 2026 |
BlackRock Health Sciences Trust | 0.52% | 31,955 | 0 (0.00%) | Jun 30, 2026 |
JNL VARIABLE FUND LLC | 0.25% | 15,489 | 0 (0.00%) | Mar 31, 2020 |
MORGAN STANLEY PATHWAY FUNDS | 0.12% | 7,222 | -392 (-5.43%) | May 31, 2026 |
Current Ownership Distribution
- Institutions2.9B (73.75%)
- Mutual Funds1.0B (25.60%)
- Insiders25.5M (0.64%)
- Other0 (0.00%)
Insider Transactions
- 0.64% (25.5M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 0Number of InsiderSelling (last 12 months)
- $0.00Amount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
Cox Russell J. | Award | Sep 23, 2026 | $0.00 | 10,000 | $0.00 | 10,000 |
Nathan Steven D | Award | Sep 23, 2026 | $0.00 | 10,000 | $0.00 | 10,000 |
Milligan Sandra | Award | Sep 23, 2026 | $0.00 | 10,000 | $0.00 | 10,000 |
Drynan Skye | Award | Sep 23, 2026 | $0.00 | 10,000 | $0.00 | 10,000 |
Peterson Caryn Chief Development Officer | Award | Aug 24, 2026 | $0.00 | 5.8M | $0.00 | 5.8M |
Christian Waage EVP, Tech Ops and Admin | Award | Aug 24, 2026 | $0.00 | 2.9M | $0.00 | 2.9M |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 562,500 | $0.00 | 0 |
Hasnain Faheem President & CEO | Return | Mar 19, 2026 | $0.00 | 1.7M | $0.00 | 0 |
Giraudo Bryan COO/CFO | Return | Mar 19, 2026 | $0.00 | 693,750 | $0.00 | 0 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 506,250 | $0.00 | 0 |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 572,000 | $0.00 | 0 |
Peterson Caryn EVP, Regulatory Affairs | Return | Mar 19, 2026 | $0.00 | 506,250 | $0.00 | 0 |
Smith Robert Paul JR Chief Commercial Officer | Return | Mar 19, 2026 | $0.00 | 562,500 | $0.00 | 0 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 440,000 | $0.00 | 0 |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 487,500 | $0.00 | 0 |
Hasnain Faheem President & CEO | Return | Mar 19, 2026 | $0.00 | 1.5M | $0.00 | 0 |
Giraudo Bryan COO/CFO | Return | Mar 19, 2026 | $0.00 | 638,000 | $0.00 | 0 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 375,000 | $0.00 | 0 |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 162,500 | $0.00 | 0 |
Peterson Caryn EVP, Regulatory Affairs | Return | Mar 19, 2026 | $0.00 | 440,000 | $0.00 | 0 |
Smith Robert Paul JR Chief Commercial Officer | Return | Mar 19, 2026 | $0.00 | 572,000 | $0.00 | 0 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 125,000 | $0.00 | 0 |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 157,500 | $0.00 | 0 |
Hasnain Faheem President & CEO | Return | Mar 19, 2026 | $0.00 | 1.3M | $0.00 | 0 |
Giraudo Bryan COO/CFO | Return | Mar 19, 2026 | $0.00 | 543,750 | $0.00 | 0 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 157,500 | $0.00 | 0 |
Aranda Richard Chief Medical Officer | Return | Mar 19, 2026 | $0.00 | 157,500 | $0.00 | 0 |
Peterson Caryn EVP, Regulatory Affairs | Return | Mar 19, 2026 | $0.00 | 375,000 | $0.00 | 0 |
Smith Robert Paul JR Chief Commercial Officer | Award | Mar 19, 2026 | $0.00 | 562,500 | $0.00 | 562,500 |
Christian Waage EVP, Tech Ops and Admin | Return | Mar 19, 2026 | $0.00 | 157,500 | $0.00 | 0 |