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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; 171 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, Q3 2026

Institutional positions in Gossamer Bio, Inc. as of Sep 30, 2026. 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

Q3 2026 data is still coming in (13F filing deadline: Nov 16, 2026), so these numbers are incomplete.

Institutional holders
51
−70 vs. Q2 2026
Shares held
1.77M
−752.4K (−29.8%) vs. Q2 2026Converted for a 1-for-80 split
Total value
$23.3M
−$9.74M (−29.4%) vs. Q2 2026
New holders
4
23 more added
Sold out
74
15 more reduced

50 institutions that held it in Q2 2026 haven't filed for Q3 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.

Compare with Q2 2026: 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.

Institutional holders
Q1 2021: 123 institutionsQ2 2021: 115 institutionsQ3 2021: 128 institutionsQ4 2021: 133 institutionsQ1 2022: 141 institutionsQ2 2022: 129 institutionsQ3 2022: 160 institutionsQ4 2022: 120 institutionsQ1 2023: 111 institutionsQ2 2023: 99 institutionsQ3 2023: 96 institutionsQ4 2023: 98 institutionsQ1 2024: 109 institutionsQ2 2024: 94 institutionsQ3 2024: 101 institutionsQ4 2024: 106 institutionsQ1 2025: 120 institutionsQ2 2025: 125 institutionsQ3 2025: 165 institutionsQ4 2025: 196 institutionsQ1 2026: 186 institutionsQ2 2026: 171 institutions
Value held
Q1 2021: $501.9MQ2 2021: $431.1MQ3 2021: $687.7MQ4 2021: $664.9MQ1 2022: $519.8MQ2 2022: $533.2MQ3 2022: $1.02BQ4 2022: $225.1MQ1 2023: $97.9MQ2 2023: $74.4MQ3 2023: $171.2MQ4 2023: $192.0MQ1 2024: $233.5MQ2 2024: $164.7MQ3 2024: $172.7MQ4 2024: $155.0MQ1 2025: $186.9MQ2 2025: $219.5MQ3 2025: $473.7MQ4 2025: $573.4MQ1 2026: $56.3MQ2 2026: $60.8M
Institutions holding GOSS and their total value by quarter
QuarterHoldersValue
Q2 2026171$60.8M
Q1 2026186$56.3M
Q4 2025196$573.4M
Q3 2025165$473.7M
Q2 2025125$219.5M
Q1 2025120$186.9M
Q4 2024106$155.0M
Q3 2024101$172.7M
Q2 202494$164.7M
Q1 2024109$233.5M
Q4 202398$192.0M
Q3 202396$171.2M
Q2 202399$74.4M
Q1 2023111$97.9M
Q4 2022120$225.1M
Q3 2022160$1.02B
Q2 2022129$533.2M
Q1 2022141$519.8M
Q4 2021133$664.9M
Q3 2021128$687.7M
Q2 2021115$431.1M
Q1 2021123$501.9M

Institutions, Q3 2026

Shares, value and share of portfolio for each institution holding Gossamer Bio, Inc.; share changes are against Q2 2026.

Institutions holding GOSS in Q3 2026
InstitutionSharesValue% of portfolioChange in sharesAction
Context Capital Management, LLC361,830$4.29M0.09%00.0%UnchangedConverted for a 1-for-80 split
FMR LLC290,939$3.45M0.00%+289,310+17,759.3%AddedConverted for a 1-for-80 split
Worth Venture Partners, LLC–$2.43M6.25%––
Vanguard Capital Management LLC160,648$1.90M0.00%+42,948+36.5%AddedConverted for a 1-for-80 split
Kalehua Capital Management LLC139,366$1.65M1.25%00.0%UnchangedConverted for a 1-for-80 split
BlackRock, Inc.107,423$1.27M0.00%+11,549+12.0%AddedConverted for a 1-for-80 split
Marshall Wace, LLP99,503$1.18M0.00%+73,066+276.4%AddedConverted for a 1-for-80 split
Geode Capital Management, LLC70,318$833.5K0.00%+39,298+126.7%AddedConverted for a 1-for-80 split
Siren, L.L.C.65,112$771.6K0.02%00.0%UnchangedConverted for a 1-for-80 split
Squarepoint Ops LLC64,853$768.5K0.00%+32,898+103.0%AddedConverted for a 1-for-80 split
Stonepine Capital Management, LLC63,039$747.0K0.62%+63,039New
Arrowstreet Capital, Limited Partnership41,604$493.0K0.00%−53,063−56.1%ReducedConverted for a 1-for-80 split
Jane Street Group, LLC37,652$446.2K0.00%+37,652New
Vanguard Fiduciary Trust Co35,683$422.8K0.00%+20,116+129.2%AddedConverted for a 1-for-80 split
State Street Corp32,175$381.3K0.00%+18,241+130.9%AddedConverted for a 1-for-80 split
MB Generational Wealth, LLC27,904$330.7K0.17%+186+0.7%AddedConverted for a 1-for-80 split
Renaissance Technologies LLC27,725$328.5K0.00%−117,649−80.9%ReducedConverted for a 1-for-80 split
Monaco Asset Management SAM25,461$301.7K0.11%+25,461New
Ensign Peak Advisors, Inc16,751$198.5K0.00%−1,386−7.6%ReducedConverted for a 1-for-80 split
Vanguard Portfolio Management LLC16,500$195.5K0.00%+9,697+142.6%AddedConverted for a 1-for-80 split
UBS Group AG14,984$177.6K0.00%−23,688−61.3%ReducedConverted for a 1-for-80 split
Hennion & Walsh Asset Management, Inc.14,203$168.3K0.00%+467+3.4%AddedConverted for a 1-for-80 split
Invesco Ltd.13,054$154.7K0.00%+7,526+136.1%AddedConverted for a 1-for-80 split
Smith, Moore & Co.11,250$133.3K0.01%00.0%UnchangedConverted for a 1-for-80 split
Morgan Stanley6,763$80.1K0.00%+3,743+123.9%AddedConverted for a 1-for-80 split
Citigroup Inc5,250$62.2K0.00%+5,168+6,293.7%AddedConverted for a 1-for-80 split
Acadian Asset Management LLC4,468$52.0K0.00%−17,934−80.1%ReducedConverted for a 1-for-80 split
Deutsche Bank AG1,831$21.7K0.00%−12,000−86.8%ReducedConverted for a 1-for-80 split
Advisor Group Holdings, Inc.1,626$19.3K0.00%+123+8.2%AddedConverted for a 1-for-80 split
Group One Trading, L.P.1,421$16.8K0.00%+34+2.5%AddedConverted for a 1-for-80 split
Rockefeller Capital Management L.P.1,320$15.6K0.00%00.0%UnchangedConverted for a 1-for-80 split
China Universal Asset Management Co., Ltd.1,115$12.9K0.00%+648+138.8%AddedConverted for a 1-for-80 split
Vanguard Global Advisers, LLC996$11.8K0.00%00.0%UnchangedConverted for a 1-for-80 split
Farther Finance Advisors, LLC641$7.60K0.00%+589+1,125.3%AddedConverted for a 1-for-80 split
Russell Investments Group, Ltd.455$5.39K0.00%−1,058−69.9%ReducedConverted for a 1-for-80 split
BNP Paribas Arbitrage, SA349$4.14K0.00%−572−62.1%ReducedConverted for a 1-for-80 split
Mirae Asset Global Investments Co., Ltd.312$3.70K0.00%+181+137.8%AddedConverted for a 1-for-80 split
Clearstead Advisors, LLC294$3.48K0.00%00.0%UnchangedConverted for a 1-for-80 split
JPMorgan Chase & Co287$3.32K0.00%−15,071−98.1%ReducedConverted for a 1-for-80 split
Allworth Financial LP8,487$1.40K0.00%+8,381+7,900.0%AddedConverted for a 1-for-80 split
BFC Planning, Inc.78$9240.00%00.0%UnchangedConverted for a 1-for-80 split
Jones Financial Companies LLLP55$6020.00%−1−2.2%ReducedConverted for a 1-for-80 split
GAMMA Investing LLC44$5210.00%+28+181.6%AddedConverted for a 1-for-80 split
Essential Partners LLC32$3790.00%−346−91.5%ReducedConverted for a 1-for-80 split
Planning Strategies Inc.32$3790.00%−3−7.4%ReducedConverted for a 1-for-80 split
EverSource Wealth Advisors, LLC31$3670.00%−136−81.4%ReducedConverted for a 1-for-80 split
Parallel Advisors, LLC26$3080.00%+26New
Nisa Investment Advisors, LLC24$2840.00%+0+2.0%AddedConverted for a 1-for-80 split
SRS Capital Advisors, Inc.17$2010.00%−1,336−98.7%ReducedConverted for a 1-for-80 split
SBI Securities Co., Ltd.4$470.00%−4−47.9%ReducedConverted for a 1-for-80 split
IFP Advisors, Inc98$140.00%+29+41.4%AddedConverted for a 1-for-80 split
DeepCurrents Investment Group LLC0$00.00%−470,813−100.0%Sold outConverted for a 1-for-80 split
Wolverine Asset Management LLC0$00.00%−161,184−100.0%Sold outConverted for a 1-for-80 split
Barclays PLC0$00.00%−97,907−100.0%Sold outConverted for a 1-for-80 split
Qube Research & Technologies Ltd0$00.00%−88,322−100.0%Sold outConverted for a 1-for-80 split
Panagora Asset Management Inc0$00.00%−9,165−100.0%Sold outConverted for a 1-for-80 split
Mariner, LLC0$00.00%−7,434−100.0%Sold outConverted for a 1-for-80 split
Ieq Capital, LLC0$00.00%−7,391−100.0%Sold outConverted for a 1-for-80 split
RSM US Wealth Management LLC0$00.00%−6,751−100.0%Sold outConverted for a 1-for-80 split
LPL Financial LLC0$00.00%−4,157−100.0%Sold outConverted for a 1-for-80 split
Creative Planning0$00.00%−2,649−100.0%Sold outConverted for a 1-for-80 split
Merit Financial Group, LLC0$00.00%−2,120−100.0%Sold outConverted for a 1-for-80 split
Eventide Asset Management, LLC0$00.00%−2,043−100.0%Sold outConverted for a 1-for-80 split
Cerity Partners LLC0$00.00%−2,005−100.0%Sold outConverted for a 1-for-80 split
HighTower Advisors, LLC0$00.00%−1,804−100.0%Sold outConverted for a 1-for-80 split
Wealth Enhancement Advisory Services, LLC0$00.00%−1,924−100.0%Sold outConverted for a 1-for-80 split
BCV Asset Management Inc.0$00.00%−1,331−100.0%Sold outConverted for a 1-for-80 split
Commonwealth Equity Services, LLC0$00.00%−1,275−100.0%Sold outConverted for a 1-for-80 split
Colony Group, LLC0$00.00%−1,161−100.0%Sold outConverted for a 1-for-80 split
Rhumbline Advisers0$00.00%−1,107−100.0%Sold outConverted for a 1-for-80 split
Captrust Financial Advisors0$00.00%−1,022−100.0%Sold outConverted for a 1-for-80 split
AlphaCore Capital LLC0$00.00%−869−100.0%Sold outConverted for a 1-for-80 split
Bronte Capital Management Pty Ltd.0$00.00%−847−100.0%Sold outConverted for a 1-for-80 split
Bull Harbor Capital LLC0$00.00%−640−100.0%Sold outConverted for a 1-for-80 split
Bank of New York Mellon Corp0$00.00%−571−100.0%Sold outConverted for a 1-for-80 split
Y-Intercept (Hong Kong) Ltd0$00.00%−540−100.0%Sold outConverted for a 1-for-80 split
Cambridge Investment Research Advisors, Inc.0$00.00%−535−100.0%Sold outConverted for a 1-for-80 split
Prospera Financial Services Inc0$00.00%−527−100.0%Sold outConverted for a 1-for-80 split
Skaana Management L.P.0$00.00%−503−100.0%Sold outConverted for a 1-for-80 split
StoneX Group Inc.0$00.00%−344−100.0%Sold outConverted for a 1-for-80 split
Vickerman Investment Advisors, Inc.0$00.00%−435−100.0%Sold outConverted for a 1-for-80 split
Brighton Jones LLC0$00.00%−404−100.0%Sold outConverted for a 1-for-80 split
Cetera Investment Advisers0$00.00%−384−100.0%Sold outConverted for a 1-for-80 split
Kestra Advisory Services, LLC0$00.00%−356−100.0%Sold outConverted for a 1-for-80 split
Gerber, LLC0$00.00%−353−100.0%Sold outConverted for a 1-for-80 split
Buckingham Strategic Partners0$00.00%−341−100.0%Sold outConverted for a 1-for-80 split
R.H. Investment Group, LLC0$00.00%−329−100.0%Sold outConverted for a 1-for-80 split
NorthCrest Asset Manangement, LLC0$00.00%−297−100.0%Sold outConverted for a 1-for-80 split
Gladstone Institutional Advisory LLC0$00.00%−312−100.0%Sold outConverted for a 1-for-80 split
Capstone Wealth Management, LLC0$00.00%−308−100.0%Sold outConverted for a 1-for-80 split
Mainsail Asset Management, LLC0$00.00%−275−100.0%Sold outConverted for a 1-for-80 split
Beaumont Capital Management, LLC0$00.00%−276−100.0%Sold outConverted for a 1-for-80 split
Sequoia Financial Advisors, LLC0$00.00%−274−100.0%Sold outConverted for a 1-for-80 split
GWM Advisors LLC0$00.00%−274−100.0%Sold outConverted for a 1-for-80 split
MAI Capital Management0$00.00%−260−100.0%Sold outConverted for a 1-for-80 split
Chicago Partners Investment Group LLC0$00.00%−265−100.0%Sold outConverted for a 1-for-80 split
Birchview Capital, LP0$00.00%−227−100.0%Sold outConverted for a 1-for-80 split
Curated Wealth Partners LLC0$00.00%−224−100.0%Sold outConverted for a 1-for-80 split
Evolve Private Wealth, LLC0$00.00%−221−100.0%Sold outConverted for a 1-for-80 split
Drive Wealth Management, LLC0$00.00%−219−100.0%Sold outConverted for a 1-for-80 split