ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Position in GOSS — Gossamer Bio, Inc.

CIK 1164508 BOSTON, MA

Position in GOSS

as of Jun 30, 2026 · filed Aug 13, 2026 Compact

Position Value

$1,249,609

-$1,076,345 QoQ

Shares Held

7,573,388

+909.4% QoQ

Ownership

1.55%

of shares outstanding

% of Portfolio

0.00%

of 13F equity value

Holder Rank

#16

of 168 holders

Holding Since

Mar 2020

9 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Healthcare · as of Jun 30, 2026

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP holds $2,519,535,758 across 72 Biotechnology names. GOSS ranks #56 (0.0% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	VRTX	Vertex Pharmaceuticals Inc / Ma	738,378	$366,774,503
2	INCY	Incyte Corp	2,744,958	$311,168,438
3	REGN	Regeneron Pharmaceuticals, Inc.	393,685	$245,478,344
4	EXEL	Exelixis, Inc.	4,365,926	$237,550,033
5	GMAB	Genmab A/S	4,975,324	$136,672,150
6	RPRX	Royalty Pharma plc	2,435,341	$136,549,569
7	HALO	Halozyme Therapeutics, Inc.	1,704,623	$133,420,842
8	ONC	BeOne Medicines Ltd.	249,758	$71,173,537

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$1,249,609	7,573,388	+909.4%	Shares	Defined	2026-08-13
2025-12-31	$2,325,954	750,308	+18.1%	Shares	Defined	2026-02-13
2025-09-30	$1,671,094	635,397	-43.2%	Shares	Defined	2025-11-13
2025-06-30	$1,375,105	1,117,972	+39.1%	Shares	Defined	2025-08-13
2025-03-31	$884,196	803,815	+2180.1%	Shares	Defined	2025-05-14
2022-03-31	$305,996	35,253	-67.4%	Shares	Defined	2022-05-13
2020-09-30	$1,343,208	108,236	+35.2%	Shares	Defined	2020-11-12
2020-06-30	$1,040,364	80,028	+535.1%	Shares	Defined	2020-08-12
2020-03-31	$127,890	12,600	—	Shares	Defined	2020-05-15
No filing history on record for this holder in this stock.