Gossamer Bio, Inc. (GOSS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

227,981,475Shares Outstanding

190,803,575Shares held by institutions

$83,686,448Value of institutional holdings

83.69%Institutional ownership %

6.99%Shares Changed QoQ

190No. 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.

These investors held 82.9% of outstanding shares in December 2025, up from 80.3% in September 2025.
Their total shares held in GOSS increased 6.12% from the prior quarter, while the number of investors in Gossamer Bio increased 82.69% year over year.
Among the 190 funds, 113 bought more Gossamer Bio shares, 50 sold down, and 27 held their ground.
Combined, these investors held 188.94Mn shares in GOSS for December 2025, up by 10.9Mn shares quarter on quarter, and up 15.4Mn shares year over year.
NEA Management Company, LLC is the top holder of Gossamer Bio as of December 31, 2025, with 18.09Mn shares representing 7.94% of outstanding stock.
The most significant purchases of GOSS for the quarter ending December 2025 came from Corient Private Wealth LLC (7.67Mn), State Street Corp (5.43Mn), Goldman Sachs Group Inc (3.28Mn), BlackRock, Inc. (3.21Mn), TWO SIGMA INVESTMENTS, LP (1.11Mn).
The biggest sellers of Gossamer Bio for the quarter ending December 2025 included 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).
Gossamer Bio's 10 largest shareholders as of 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) per Business Quant data.

190 Institutional Holders

190,803,575 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
NEA Management Company, LLC	31 Dec, 2025	18,093,034	0	0.00%	$56,088,405.00
BlackRock, Inc.	31 Dec, 2025	17,056,878	3,210,824	23.19%	$52,876,322.00
Octagon Capital Advisors LP	31 Dec, 2025	13,915,371	-3,134,629	-18.38%	$43,137,650.00
VANGUARD GROUP INC	31 Dec, 2025	12,873,209	863,436	7.19%	$39,906,948.00
State Street Corp	31 Dec, 2025	9,310,969	5,427,302	139.75%	$28,864,004.00
ARCH Venture Management, LLC	31 Dec, 2025	8,055,916	0	0.00%	$24,973,340.00
Corient Private Wealth LLC	31 Dec, 2025	7,691,770	7,671,764	38,347.32%	$23,844,488.00
Samsara BioCapital, LLC	31 Dec, 2025	7,222,559	1,092,291	17.82%	$22,389,933.00
Siren, L.L.C.	31 Dec, 2025	5,208,968	0	0.00%	$16,147,801.00
683 Capital Management, LLC	31 Dec, 2025	5,190,800	131,600	2.60%	$16,091,480.00
HHLR ADVISORS, LTD.	31 Dec, 2025	4,974,041	0	0.00%	$15,419,527.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	4,872,714	183,183	3.91%	$15,109,345.00
Palo Alto Investors LP	31 Dec, 2025	4,471,592	-992,757	-18.17%	$13,861,935.00
ACADIAN ASSET MANAGEMENT LLC	31 Dec, 2025	4,416,903	-596,066	-11.89%	$13,687.00
FMR LLC	31 Dec, 2025	4,237,590	152,244	3.73%	$13,136,529.00
MILLENNIUM MANAGEMENT LLC	31 Dec, 2025	3,584,288	-35,041	-0.97%	$11,111,293.00
Goldman Sachs Group Inc	31 Dec, 2025	3,584,228	3,284,646	1,096.41%	$11,111,108.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	3,397,110	1,109,859	48.52%	$10,531,041.00
Rock Springs Capital Management LP	31 Dec, 2025	3,266,960	0	0.00%	$10,127,576.00
PERCEPTIVE ADVISORS LLC	31 Dec, 2025	3,139,669	-673,128	-17.65%	$9,732,974.00

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