Caryn Peterson Gossamer Bio, Inc. (GOSS) insider trading activity

Caryn Peterson is EVP, Regulatory Affairs of Gossamer Bio, Inc.. Currently has a direct ownership of 259,333 shares of GOSS, which is worth approximately $702,792. The most recent transaction as insider was on Jan 02, 2026, when has been sold 84,500 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 259K

48.33% 3M change

420.4% 12M change

Total Value Held $702,792

Caryn Peterson Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jan 02 2026	BUY Grant, award, or other acquisition	-	84,500 Added 24.58%	259,333 Common Stock
Oct 01 2025	BUY Grant, award, or other acquisition	-	125,000 Added 41.69%	174,833 Common Stock
Mar 18 2024	SELL Open market or private sale	$5,343 $1.33 p/Share	4,018 Reduced 7.46%	49,833 Common Stock
Mar 16 2023	SELL Open market or private sale	$8,320 $1.1 p/Share	7,564 Reduced 12.32%	53,851 Common Stock
Oct 24 2022	SELL Open market or private sale	$57,417 $12.07 p/Share	4,757 Reduced 7.19%	61,415 Common Stock
Mar 16 2022	SELL Open market or private sale	$51,990 $8.28 p/Share	6,279 Reduced 8.67%	66,172 Common Stock
Oct 25 2021	SELL Open market or private sale	$29,118 $12.25 p/Share	2,377 Reduced 3.18%	72,451 Common Stock

Apr 16 2021	BUY Grant, award, or other acquisition	-	10,820 Added 12.63%	74,828 Common Stock

Caryn Peterson

EVP, Regulatory Affairs

San Diego, CA

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