Gossamer Bio, Inc.

Historical 13F Holders

Symbol
GOSS
CUSIP
38341P102
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Shares Held, Excluding Options
Total Filers

13D/G Filers

Each filer's latest filing for 38341P102 since 12/18/2024, largest first.

Filer % of Class Filed
683 Capital Management, LLC 13G
10.0% 6/11/2026
Event 6/4/2026
Context Capital Management, LLC 13G
9.9% 6/9/2026
Event 6/4/2026
DeepCurrents Investment Group LLC 13G
7.7% 6/11/2026
Event 6/4/2026
D. E. Shaw & Co., L.P. 13D/A
6.0% 8/24/2026
Event 8/20/2026
Under 5%, checked the "5 percent or less" box, or amended by a later filing (6)
Opaleye Management Inc. 13G
Amended under CUSIP 38341P201 on 11/6/2026
5.1% 7/29/2026
Event 7/22/2026
Octagon Capital Advisors LP 13G/A
3.8% 5/14/2026
Event 3/31/2026
Invus Global Management, LLC 13G/A
2.8% 2/12/2025
Event 12/31/2024
Growth Equity Opportunities 18 VGE, LLC 13D/A
1.7% 2/24/2026
Event 2/23/2026
BlackRock, Inc. 13G/A 1.0% 7/29/2026
Event 6/30/2026
Vanguard Group Inc 13G/A 0% 3/27/2026
Event 3/13/2026

13F Holders by Quarter

Period Filers Shares, Excl. Options Value, Excl. Options
2026 Q3 2 8.59 k $1.41k
2026 Q2 174 371 M $60.8M
2026 Q1 194 177 M $58.8M
2025 Q4 201 189 M $585M
2025 Q3 170 180 M $474M
2025 Q2 130 178 M $220M
2025 Q1 124 170 M $187M
2024 Q4 107 171 M $155M
2024 Q3 102 175 M $173M
2024 Q2 95 183 M $165M
2024 Q1 111 198 M $234M
2023 Q4 100 209 M $192M
2023 Q3 99 206 M $171M
2023 Q2 101 62.0 M $74.7M
2023 Q1 113 77.7 M $97.9M
2022 Q4 123 104 M $225M
2022 Q3 166 85.2 M $1.02B
2022 Q2 134 63.7 M $533M
2022 Q1 143 59.9 M $520M
2021 Q4 136 58.8 M $665M
2021 Q3 129 54.7 M $688M
2021 Q2 117 53.1 M $431M
2021 Q1 125 54.3 M $502M
2020 Q4 125 53.1 M $514M
2020 Q3 127 55.5 M $689M
2020 Q2 114 52.5 M $684M
2020 Q1 98 39.0 M $396M
2019 Q4 94 40.4 M $632M
2019 Q3 83 41.3 M $694M
2019 Q2 75 36.7 M $813M
2019 Q1 72 35.9 M $776M