Stocks
GOSS Gossamer Bio, Inc.

GOSS

Gossamer Bio, Inc.

Company with tickers: GOSS

CIK

1728117

CUSIP

38341P102

Shares Outstanding

234,696,281

Price History Institutional Holders Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-03-19	Giraudo Bryan	Director	Other	60,000	—	—	0
2026-03-19	Giraudo Bryan	Director	Other	100,000	—	—	0
2026-03-19	Giraudo Bryan	Director	Other	693,750	—	—	0
2026-03-19	Giraudo Bryan	Director	Other	211,500	—	—	0
2026-03-19	Giraudo Bryan	Director	Award	96,667	—	—	96,667
2026-03-19	Giraudo Bryan	Director	Award	47,667	—	—	47,667
2026-03-19	Giraudo Bryan	Director	Award	181,250	—	—	181,250
2026-03-19	Giraudo Bryan	Director	Award	211,500	—	—	211,500
2026-03-19	Giraudo Bryan	Director	Award	638,000	—	—	638,000
2026-03-19	Giraudo Bryan	Director	Award	543,750	—	—	543,750
2026-03-19	Giraudo Bryan	Director	Other	543,750	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	572,000	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	40,000	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Award	126,667	—	—	126,667
2026-03-19	Aranda Richard	Chief Medical Officer	Other	562,500	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Award	22,784	—	—	22,784
2026-03-19	Aranda Richard	Chief Medical Officer	Award	562,500	—	—	562,500
2026-03-19	Aranda Richard	Chief Medical Officer	Award	40,000	—	—	40,000
2026-03-19	Aranda Richard	Chief Medical Officer	Award	30,000	—	—	30,000
2026-03-19	Aranda Richard	Chief Medical Officer	Award	487,500	—	—	487,500
2026-03-19	Aranda Richard	Chief Medical Officer	Award	20,000	—	—	20,000
2026-03-19	Aranda Richard	Chief Medical Officer	Other	162,500	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	22,784	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	487,500	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	20,000	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Award	162,500	—	—	162,500
2026-03-19	Aranda Richard	Chief Medical Officer	Award	157,500	—	—	157,500
2026-03-19	Aranda Richard	Chief Medical Officer	Other	30,000	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	157,500	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	157,500	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Other	126,667	—	—	0
2026-03-19	Aranda Richard	Chief Medical Officer	Award	9,167	—	—	9,167
2026-03-19	Aranda Richard	Chief Medical Officer	Award	157,500	—	—	157,500
2026-03-19	Aranda Richard	Chief Medical Officer	Award	572,000	—	—	572,000
2026-03-19	Aranda Richard	Chief Medical Officer	Other	9,167	—	—	0
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Award	157,500	—	—	157,500
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Award	440,000	—	—	440,000
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Other	126,667	—	—	0
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Award	375,000	—	—	375,000
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Other	157,500	—	—	0
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Award	157,500	—	—	157,500
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Other	506,250	—	—	0
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Other	47,667	—	—	0
2026-03-19	Christian Waage	EVP, Tech Ops and Admin	Award	60,000	—	—	60,000
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	9,167	—	—	9,167
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	125,000	—	—	125,000
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	157,500	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	125,000	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	9,167	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	375,000	—	—	375,000
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	157,500	—	—	157,500
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	375,000	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	21,167	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	32,334	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	506,250	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	440,000	—	—	440,000
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	440,000	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	506,250	—	—	506,250
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	21,167	—	—	21,167
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	18,834	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	32,334	—	—	32,334
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	22,784	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	157,500	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	157,500	—	—	157,500
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Other	126,667	—	—	0
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	22,784	—	—	22,784
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	126,667	—	—	126,667
2026-03-19	Peterson Caryn	EVP, Regulatory Affairs	Award	18,834	—	—	18,834
2026-03-19	Smith Robert Paul JR	Chief Commercial Officer	Other	572,000	—	—	0
2026-03-19	Smith Robert Paul JR	Chief Commercial Officer	Other	562,500	—	—	0
2026-03-19	Smith Robert Paul JR	Chief Commercial Officer	Award	572,000	—	—	572,000
2026-03-19	Smith Robert Paul JR	Chief Commercial Officer	Award	562,500	—	—	562,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	437,500	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	544,500	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	544,500	—	—	544,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	1,680,000	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	1,540,000	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	1,680,000	—	—	1,680,000
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	43,500	—	—	43,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	1,312,500	—	—	1,312,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	437,500	—	—	437,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	650,000	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	47,000	—	—	47,000
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	544,500	—	—	544,500
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	325,000	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	1,312,500	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	47,000	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	325,000	—	—	325,000
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	1,540,000	—	—	1,540,000
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	43,500	—	—	0
2026-03-19	Hasnain Faheem	Director, President & CEO	Award	650,000	—	—	650,000
2026-03-19	Hasnain Faheem	Director, President & CEO	Other	544,500	—	—	0
2026-03-19	Giraudo Bryan	Director	Other	96,667	—	—	0
2026-03-19	Giraudo Bryan	Director	Award	100,000	—	—	100,000
2026-03-19	Giraudo Bryan	Director	Other	176,667	—	—	0
2026-03-19	Giraudo Bryan	Director	Award	176,667	—	—	176,667
2026-03-19	Giraudo Bryan	Director	Award	211,500	—	—	211,500
2026-03-19	Giraudo Bryan	Director	Other	47,667	—	—	0
2026-03-19	Giraudo Bryan	Director	Award	60,000	—	—	60,000
2026-03-19	Giraudo Bryan	Director	Other	638,000	—	—	0