California State Teachers Retirement System Gossamer Bio, Inc. Transaction History

California State Teachers Retirement System

$94.5 Billion
Q3 2025

A detailed history of California State Teachers Retirement System transactions in Gossamer Bio, Inc. stock. As of the latest transaction made, California State Teachers Retirement System holds 11,859 shares of GOSS stock, worth $32,137. This represents 0.0% of its overall portfolio holdings.

Number of Shares

11,859

Previous 11,850 0.08%

Holding current value

$32,137

Previous $14,000 121.43%

% of portfolio

0.0%

Previous 0.0%

18 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$1.21 - $3.46 $10 - $31	9 Added 0.08%	11,859 $31,000
Q2 2025 Aug 14, 2025	BUY	$0.78 - $1.44 $9,243 - $17,064	11,850 New	11,850 $14,000
Q1 2023 May 09, 2023	SELL	$0.96 - $2.92 $44,743 - $136,095	-46,608 Reduced 66.56%	23,416 $29,000
Q4 2022 Feb 14, 2023	BUY	$1.74 - $12.87 $1,350 - $9,987	776 Added 1.12%	70,024 $151,000
Q3 2022 Nov 18, 2022	BUY	$7.21 - $14.88 $20,707 - $42,735	2,872 Added 4.33%	69,248 $830,000

Q2 2022 Aug 15, 2022	SELL	$5.97 - $9.97 $17,396 - $29,052	-2,914 Reduced 4.21%	66,376 $556,000
Q1 2022 May 16, 2022	SELL	$8.44 - $12.49 $54,986 - $81,372	-6,515 Reduced 8.59%	69,290 $601,000
Q4 2021 Feb 15, 2022	BUY	$10.12 - $14.07 $17,335 - $24,101	1,713 Added 2.31%	75,805 $857,000
Q3 2021 Nov 15, 2021	SELL	$7.25 - $13.23 $85,049 - $155,201	-11,731 Reduced 13.67%	74,092 $931,000
Q2 2021 Aug 16, 2021	BUY	$8.0 - $9.75 $3,072 - $3,744	384 Added 0.45%	85,823 $697,000
Q1 2021 May 18, 2021	SELL	$8.63 - $10.94 $2,658 - $3,369	-308 Reduced 0.36%	85,439 $790,000
Q3 2020 Nov 17, 2020	BUY	$11.3 - $14.75 $124,300 - $162,250	11,000 Added 14.72%	85,747 $1.06 Million
Q2 2020 Aug 17, 2020	BUY	$9.52 - $15.98 $84,109 - $141,183	8,835 Added 13.4%	74,747 $972,000
Q1 2020 May 13, 2020	BUY	$8.0 - $15.48 $6,104 - $11,811	763 Added 1.17%	65,912 $669,000
Q4 2019 Feb 14, 2020	SELL	$14.82 - $26.79 $24,808 - $44,846	-1,674 Reduced 2.51%	65,149 $1.02 Million
Q3 2019 Nov 15, 2019	BUY	$16.02 - $22.47 $577,056 - $809,391	36,021 Added 116.94%	66,823 $1.12 Million
Q2 2019 Aug 14, 2019	BUY	$16.12 - $22.89 $219,248 - $311,326	13,601 Added 79.07%	30,802 $683,000
Q1 2019 May 09, 2019	BUY	$17.58 - $23.97 $302,393 - $412,307	17,201 New	17,201 $373,000

Others Institutions Holding GOSS

# of Institutions

183

Shares Held

164M

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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California State Teachers Retirement System Gossamer Bio, Inc. Transaction History