Gossamer Bio Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:GOSS Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
24 Jun 24	SellUS$1,260	Richard Aranda	Individual	1,908	US$0.66
21 Jun 24	BuyUS$250,282	Faheem Hasnain	Individual	372,000	US$0.67
18 Jun 24	BuyUS$59,110	Bryan Giraudo	Individual	100,000	US$0.59
17 Jun 24	BuyUS$15,050	Robert Smith	Individual	25,000	US$0.60
27 Mar 24	SellUS$26,773	Faheem Hasnain	Individual	23,172	US$1.16
27 Mar 24	SellUS$7,431	Bryan Giraudo	Individual	6,430	US$1.16
27 Mar 24	SellUS$7,430	Christian Waage	Individual	6,430	US$1.16
18 Mar 24	SellUS$5,343	Caryn Peterson	Individual	4,018	US$1.33
18 Mar 24	SellUS$5,342	Richard Aranda	Individual	4,018	US$1.33
15 Nov 23	BuyUS$25,213	Sandra Milligan	Individual	32,000	US$0.79
13 Nov 23	BuyUS$112,880	Bryan Giraudo	Individual	200,000	US$0.56

Insider Buying: Insufficient data to determine if insiders have bought more shares than they have sold in the past 3 months.

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top 25 shareholders own 69.2% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
8%	New Enterprise Associates, Inc.	18,093,034	US$19.4m	14.2%	1.04%
5.88%	Artal Group S.A.	13,308,968	US$14.2m	0%	0.34%
5.2%	The Vanguard Group, Inc.	11,760,251	US$12.6m	-0.03%	no data
4.06%	Octagon Capital Advisors LP	9,187,883	US$9.8m	0%	1.51%
3.56%	Arch Venture Partners, L.P.	8,055,916	US$8.6m	0%	0.71%
3.51%	FMR LLC	7,930,508	US$8.5m	-3.16%	no data
2.77%	Palo Alto Investors LP	6,277,093	US$6.7m	-1.79%	0.82%
2.71%	Samsara BioCapital LLC	6,130,268	US$6.6m	0%	1.24%
2.54%	683 Capital Management, LLC	5,750,000	US$6.2m	76.9%	0.58%
2.47%	Millennium Management LLC	5,597,378	US$6.0m	-13.8%	no data
2.44%	Faheem Hasnain	5,528,366	US$5.9m	7.21%	no data
2.43%	Silverarc Capital Management, LLC	5,500,000	US$5.9m	-10.3%	1.41%
2.43%	T. Rowe Price Group, Inc.	5,494,794	US$5.9m	90.1%	no data
2.43%	Alyeska Investment Group, L.P.	5,487,516	US$5.9m	0%	0.03%
2.42%	Eversept Partners, L.P.	5,484,148	US$5.9m	-8.51%	0.39%
2.2%	Hillhouse Investment Management, Ltd.	4,974,041	US$5.3m	0%	0.04%
1.81%	Citadel Advisors LLC	4,093,836	US$4.4m	5.65%	no data
1.73%	Opaleye Management Inc.	3,910,000	US$4.2m	60.2%	0.68%
1.68%	Deutsche Asset & Wealth Management	3,807,661	US$4.1m	0%	no data
1.59%	Acadian Asset Management LLC	3,592,765	US$3.8m	31.3%	0.01%
1.56%	Platinum Investment Management Limited	3,524,908	US$3.8m	-24.9%	0.1%
1.5%	Corient Private Wealth LLC	3,391,483	US$3.6m	3.64%	0.01%
1.47%	Marshall Wace LLP	3,335,511	US$3.6m	171%	0.01%
1.44%	Rock Springs Capital Management LP	3,266,960	US$3.5m	0%	0.1%
1.35%	Federated Hermes, Inc.	3,065,136	US$3.3m	-2.17%	0.01%