Gossamer Bio, Inc. (GOSS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

44,965,194Shares held by institutions

$14,438,324Value of institutional holdings

81.35%Institutional ownership %

5.67%Shares Changed QoQ

123No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Gossamer Bio, Inc. (NASDAQ:GOSS) appears in 190 institutional 13F filings for the quarter ending December 2025.

They owned 82.9% of outstanding stock in December 2025, up from 80.3% the prior quarter.
Their total shares held in GOSS increased 6.12% quarter over quarter, and separately, investors owning Gossamer Bio increased 82.69% from a year ago.
Of these 190 holders, 113 added to their stakes in Gossamer Bio, 50 trimmed positions, and 27 made no changes.
In total, institutional investors held 188.94Mn shares in Gossamer Bio as of December 2025, up by 10.9Mn shares quarter on quarter, and up 15.4Mn shares year over year.
As of December 31, 2025, NEA Management Company, LLC held the largest stake in Gossamer Bio with 18.09Mn shares, accounting for 7.94% of total shares outstanding.
The largest buyers of Gossamer Bio for the quarter ending December 2025 were Corient Private Wealth LLC (7.67Mn), State Street Corp (5.43Mn), BlackRock, Inc. (3.21Mn), Goldman Sachs Group Inc (1.49Mn), TWO SIGMA INVESTMENTS, LP (1.11Mn).
The largest sales of GOSS for the quarter ending December 2025 came from Bank Of America Corp /De/ (3.86Mn), Octagon Capital Advisors LP (3.13Mn), SILVERARC CAPITAL MANAGEMENT, LLC (2.64Mn), RENAISSANCE TECHNOLOGIES LLC (2.32Mn), CITADEL ADVISORS LLC (1.58Mn).
Per Business Quant, the top 10 investors in GOSS for the quarter ending December 2025 include NEA Management Company, LLC (18.09Mn), BlackRock, Inc. (17.06Mn), Octagon Capital Advisors LP (13.92Mn), VANGUARD GROUP INC (12.87Mn), State Street Corp (9.31Mn), ARCH Venture Management, LLC (8.06Mn), Corient Private Wealth LLC (7.69Mn), Samsara BioCapital, LLC (7.22Mn), Siren, L.L.C. (5.21Mn), 683 Capital Management, LLC (5.19Mn).

190 Institutional Holders

44,965,194 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	3,210,824	23.19%	$0.00
NEA Management Company, LLC	31 Dec, 2025	0	0.00%	$0.00
Octagon Capital Advisors LP	31 Dec, 2025	-3,134,629	-18.38%	$0.00
Barclays Plc	31 Dec, 2025	283,763	96.92%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	863,436	7.19%	$0.00
Corient Private Wealth LLC	31 Dec, 2025	7,671,764	38,347.32%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	111,532	1,093.45%	$0.00
State Street Corp	31 Dec, 2025	5,427,302	139.75%	$0.00
Samsara BioCapital, LLC	31 Dec, 2025	1,092,291	17.82%	$0.00
ARCH Venture Management, LLC	31 Dec, 2025	0	0.00%	$0.00
Siren, L.L.C.	31 Dec, 2025	0	0.00%	$0.00
683 Capital Management, LLC	31 Dec, 2025	131,600	2.60%	$0.00
HHLR ADVISORS, LTD.	31 Dec, 2025	0	0.00%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	183,183	3.91%	$0.00
SILVERARC CAPITAL MANAGEMENT, LLC	31 Dec, 2025	-2,643,360	-55.31%	$0.00
Palo Alto Investors LP	31 Dec, 2025	-992,757	-18.17%	$0.00
UBS Group AG	31 Dec, 2025	-998,665	-36.05%	$0.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	-596,066	-11.89%	$0.00
MB Generational Wealth, LLC	31 Dec, 2025	190,625	13.47%	$0.00
FMR LLC	31 Dec, 2025	152,244	3.73%	$0.00

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