Insider · CIK 0001857256

Peterson Caryn

Reports to the SEC for 1 company · SAN DIEGO, CA

sec.gov

Transactions

Companies

Filings

CIK

0001857256

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2026-08-24	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+5.8M sh	—	—	5,800,051
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−506K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−440K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−375K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−125K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−158K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−158K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−127K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−21.2K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−18.8K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−22.8K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−9,167 sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−32.3K sh	—	—	0
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+506K sh	—	—	506,250
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+440K sh	—	—	440,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+375K sh	—	—	375,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+125K sh	—	—	125,000
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+158K sh	—	—	157,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+158K sh	—	—	157,500
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+127K sh	—	—	126,667
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+21.2K sh	—	—	21,167
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+18.8K sh	—	—	18,834
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+22.8K sh	—	—	22,784
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+9,167 sh	—	—	9,167
2026-03-19	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+32.3K sh	—	—	32,334
2026-01-02	GOSSGossamer Bio, Inc.A Award	Chief Development Officer	AAward	+84.5K sh	—	—	259,333
2026-01-02	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+506K sh	—	—	506,250
2025-10-01	GOSSGossamer Bio, Inc.A Award	Chief Development Officer	AAward	+125K sh	—	—	174,833
2025-03-04	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+440K sh	—	—	440,000
2024-03-18	GOSSGossamer Bio, Inc.S Sale	Chief Development Officer	SSale	−4,018 sh	$1.33	−$5,342.735	49,833
2024-01-02	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+375K sh	—	—	375,000
2023-11-20	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+125K sh	—	—	125,000
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−48.5K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−13.8K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−34.2K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−28.3K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−31.8K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)D Disposition to Issuer	Chief Development Officer	DDisposition to Issuer	−190K sh	—	—	0
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+32.3K sh	—	—	32,334
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+9,167 sh	—	—	9,167
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+22.8K sh	—	—	22,784
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+18.8K sh	—	—	18,834
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+21.2K sh	—	—	21,167
2023-05-05	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+127K sh	—	—	126,667
2023-03-20	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+158K sh	—	—	157,500
2023-03-16	GOSSGossamer Bio, Inc.S Sale	Chief Development Officer	SSale	−7,564 sh	$1.10	−$8,305.272	53,851
2022-12-07	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+158K sh	—	—	157,500
2022-10-24	GOSSGossamer Bio, Inc.S Sale	Chief Development Officer	SSale	−4,757 sh	$12.07	−$57.4K	61,415
2022-03-16	GOSSGossamer Bio, Inc.S Sale	Chief Development Officer	SSale	−6,279 sh	$8.28	−$52K	66,172
2022-01-06	GOSSGossamer Bio, Inc. · Stock Option (Right to Buy)A Award	Chief Development Officer	AAward	+190K sh	—	—	190,000

Recent filings

Accepted (ET)
Aug 264
Peterson Caryn0001857256-26-000006
SEC(opens sec.gov)
Mar 204
Peterson Caryn0001857256-26-000004
SEC(opens sec.gov)

Companies

Gossamer Bio, Inc.Chief Development OfficerGOSS

Address

3115 MERRYFIELD ROW, SUITE 120

SAN DIEGO, CA, 92121