Ken Griffin Gossamer Bio, Inc. Put Options Transaction History

Citadel Advisors LLC

12 transactions

Quarter	Operation	Price Per put	puts change	puts Held
Q2 2025 Aug 14, 2025	SELL	$0.78 - $1.44 $312 - $576	-400 Reduced 0.69%	57,400 $70,000
Q1 2025 May 15, 2025	SELL	$0.85 - $1.53 $19,805 - $35,649	-23,300 Reduced 28.73%	57,800 $63,000
Q4 2024 Feb 14, 2025	BUY	$0.66 - $1.07 $19,008 - $30,816	28,800 Added 55.07%	81,100 $72,000
Q3 2024 Nov 14, 2024	SELL	$0.79 - $1.25 $4,661 - $7,375	-5,900 Reduced 10.14%	52,300 $51,000
Q2 2024 Aug 14, 2024	BUY	$0.51 - $1.27 $25,704 - $64,008	50,400 Added 646.15%	58,200 $52,000
Q1 2024 May 15, 2024	BUY	$0.8 - $1.51 $1,840 - $3,473	2,300 Added 41.82%	7,800 $9,000
Q4 2023 Feb 14, 2024	SELL	$0.48 - $1.08 $336 - $756	-700 Reduced 11.29%	5,500 $5,000
Q3 2023 Nov 14, 2023	SELL	$0.78 - $1.82 $2,964 - $6,916	-3,800 Reduced 38.0%	6,200 $5,000
Q2 2023 Aug 14, 2023	SELL	$0.98 - $1.53 $30,674 - $47,889	-31,300 Reduced 75.79%	10,000 $12,000
Q1 2023 May 15, 2023	SELL	$0.96 - $2.92 $60,576 - $184,252	-63,100 Reduced 60.44%	41,300 $52,000
Q4 2022 Feb 14, 2023	BUY	$1.74 - $12.87 $136,590 - $1.01 Million	78,500 Added 303.09%	104,400 $226,000
Q3 2022 Nov 14, 2022	BUY	$7.21 - $14.88 $186,739 - $385,392	25,900 New	25,900 $310,000

135

159M

2.89M

130K

Ticker GOSS
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 93,954,000
Market Cap $181M
Description
Gossamer Bio, Inc., a clinical-stage biopharmaceutical company, focuses on discovering, acquiring, developing, and commercializing therapeutics in the disease areas of immunology, inflammation, and oncology in the United States. The company is developing GB002, an inhaled, small molecule, platelet-derived growth factor receptor, or PDGFR, colony...

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