Octagon Capital Advisors LP Gossamer Bio, Inc. Transaction History

Octagon Capital Advisors LP

$307 Million
Q3 2025

A detailed history of Octagon Capital Advisors LP transactions in Gossamer Bio, Inc. stock. As of the latest transaction made, Octagon Capital Advisors LP holds 17,050,000 shares of GOSS stock, worth $46.2 Million. This represents 14.61% of its overall portfolio holdings.

Number of Shares

17,050,000

Previous 18,350,000 7.08%

Holding current value

$46.2 Million

Previous $22.6 Million 98.68%

% of portfolio

14.61%

Previous 8.57%

12 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	SELL	$1.21 - $3.46 $1.57 Million - $4.5 Million	-1,300,000 Reduced 7.08%	17,050,000 $44.8 Million
Q1 2025 May 16, 2025	BUY	$0.85 - $1.53 $14.4 Million - $25.9 Million	16,925,000 Added 1187.72%	18,350,000 $20.2 Million
Q1 2025 May 15, 2025	SELL	$0.85 - $1.53 $14.4 Million - $25.9 Million	-16,925,000 Reduced 92.23%	1,425,000 $1.57 Million
Q4 2024 Feb 14, 2025	BUY	$0.66 - $1.07 $6.05 Million - $9.8 Million	9,162,117 Added 99.72%	18,350,000 $16.5 Million
Q4 2023 Feb 14, 2024	BUY	$0.48 - $1.08 $2.51 Million - $5.65 Million	5,229,814 Added 132.13%	9,187,883 $8.36 Million
Q2 2023 Aug 14, 2023	BUY	$0.98 - $1.53 $1.96 Million - $3.06 Million	2,000,000 Added 102.14%	3,958,069 $4.75 Million
Q4 2022 Feb 14, 2023	SELL	$1.74 - $12.87 $1.39 Million - $10.3 Million	-800,000 Reduced 29.01%	1,958,069 $4.25 Million
Q2 2022 Aug 15, 2022	BUY	$5.97 - $9.97 $1.16 Million - $1.94 Million	194,931 Added 7.61%	2,758,069 $23.1 Million
Q1 2022 May 16, 2022	BUY	$8.44 - $12.49 $8.86 Million - $13.1 Million	1,050,000 Added 69.39%	2,563,138 $22.2 Million
Q3 2021 Nov 15, 2021	BUY	$7.25 - $13.23 $725,000 - $1.32 Million	100,000 Added 7.08%	1,513,138 $19 Million
Q1 2021 May 17, 2021	SELL	$8.63 - $10.94 $1.29 Million - $1.64 Million	-150,000 Reduced 9.6%	1,413,138 $13.1 Million
Q4 2020 Feb 16, 2021	BUY	$8.3 - $13.59 $13 Million - $21.2 Million	1,563,138 New	1,563,138 $15.1 Million

Others Institutions Holding GOSS

# of Institutions

178

Shares Held

163M

Call Options Held

8.11M

Put Options Held

211K

View Full List

About Gossamer Bio, Inc.

Ticker GOSS
Exchange NASDAQ
Sector Healthcare
Industry Biotechnology
Shares Outstandng 93,954,000
Market Cap $255M
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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Octagon Capital Advisors LP Gossamer Bio, Inc. Transaction History