Gossamer Bio, Inc. (GOSS) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

227,981,475Shares Outstanding

193,523,575Shares held by institutions

$70,829,628Value of institutional holdings

84.89%Institutional ownership %

8.52%Shares Changed QoQ

190No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Gossamer Bio, Inc. (NASDAQ:GOSS) has 190 institutional investors that have filed 13F reports for the period 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% quarter over quarter, and separately, investors owning Gossamer Bio increased 82.69% from a year ago.
Of these 190 funds, 113 grew their exposure to Gossamer Bio, 50 cut back, and 27 maintained positions.
Altogether, these fund groups held 188.94Mn shares in GOSS by December 2025, up by 10.9Mn shares quarter on quarter, and up 15.4Mn shares year over year.
Merit Financial Group, LLC leads ownership in GOSS with 154.44K shares as of December 31, 2025, equal to 0.07% of outstanding shares.
Top purchasers of GOSS stock for the quarter ending December 2025 included WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (103.44K), SG Americas Securities, LLC (54.44K), R.H. Investment Group, LLC (26.3K), Krilogy Financial LLC (16.61K), Ground Swell Capital, LLC (15.36K).
Leading sellers of Gossamer Bio shares for the quarter ending December 2025 were OPPENHEIMER & CO INC (24.5K), DRIVE WEALTH MANAGEMENT, LLC (3.77K), Janney Montgomery Scott LLC (1.5K), Merit Financial Group, LLC (737), True Wealth Design, LLC (379).
According to Business Quant data, leading holders of GOSS for December 2025 are Merit Financial Group, LLC (154.44K), SG Americas Securities, LLC (128.57K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (103.44K), GERBER, LLC (28.25K), R.H. Investment Group, LLC (26.3K), NorthCrest Asset Manangement, LLC (24.69K), DRIVE WEALTH MANAGEMENT, LLC (17.55K), Krilogy Financial LLC (16.61K), Ground Swell Capital, LLC (15.36K), OPPENHEIMER & CO INC (13.0K).

190 Institutional Holders

193,523,575 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
Opaleye Management Inc.	31 Dec, 2025	5,440,000	2,715,000	99.63%	$16,864,000.00
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

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