Generation Bio Ownership

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

Recent Insider Transactions

NasdaqGS:GBIO Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
08 Dec 23	BuyUS$14,339	Dannielle Appelhans	Individual	8,000	US$1.82
04 Dec 23	BuyUS$477,778	Charles Rowland	Individual	342,960	US$1.50
04 Dec 23	BuyUS$18,000	Dannielle Appelhans	Individual	12,000	US$1.50
01 Dec 23	BuyUS$144,000	Donald Nicholson	Individual	100,000	US$1.44
01 Dec 23	BuyUS$124,778	Anthony Quinn	Individual	88,495	US$1.41

Insider Trading Volume

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

Ownership Breakdown

What is the ownership structure of GBIO?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	4,593	0.0069%
General Public	1,356,366	2.04%
Individual Insiders	3,800,422	5.71%
Public Companies	5,859,375	8.81%
VC/PE Firms	8,279,484	12.4%
Institutions	47,228,600	71%

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

Top Shareholders

Top 25 shareholders own 88.1% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
13.4%	T. Rowe Price Group, Inc.	8,878,361	US$30.1m	28.2%	no data
12.4%	Atlas Venture L.P.	8,279,484	US$28.1m	0%	3.07%
8.81%	Moderna, Inc.	5,859,375	US$19.9m	0%	no data
8.02%	FMR LLC	5,333,859	US$18.1m	-0.35%	no data
5.8%	Bellevue Asset Management AG	3,861,575	US$13.1m	6.76%	0.16%
4.58%	BlackRock, Inc.	3,048,849	US$10.3m	-3.77%	no data
4.49%	Bank of America Corporation, Asset Management Arm	2,989,606	US$10.1m	18.3%	no data
4.25%	Artal Group S.A.	2,830,591	US$9.6m	0.58%	0.25%
3.86%	The Vanguard Group, Inc.	2,570,456	US$8.7m	0.71%	no data
3.08%	EcoR1 Capital, LLC	2,046,867	US$6.9m	0%	0.22%
2.74%	Cameron McDonough	1,824,920	US$6.2m	0.2%	no data
2.44%	PFM Health Sciences, LP	1,622,487	US$5.5m	0%	0.32%
1.88%	Deutsche Asset & Wealth Management	1,251,566	US$4.2m	1.56%	no data
1.61%	Geode Capital Management, LLC	1,070,689	US$3.6m	-0.67%	no data
1.46%	Goldman Sachs Group, Investment Banking and Securities Investments	971,904	US$3.3m	8.86%	no data
1.45%	State Street Global Advisors, Inc.	964,609	US$3.3m	4.62%	no data
1.41%	Morgan Stanley, Investment Banking and Brokerage Investments	938,305	US$3.2m	-11.6%	no data
1.3%	UBS Asset Management AG	868,100	US$2.9m	0.08%	no data
1%	Renaissance Technologies LLC	664,500	US$2.3m	-3.61%	no data
0.8%	Charles Rowland	534,757	US$1.8m	0%	no data
0.76%	Dimensional Fund Advisors LP	504,251	US$1.7m	-26.2%	no data
0.72%	Acadian Asset Management LLC	479,835	US$1.6m	114%	no data
0.67%	D. E. Shaw & Co., L.P.	443,708	US$1.5m	56.7%	no data
0.59%	Charles Schwab Investment Management, Inc.	389,255	US$1.3m	2.04%	no data
0.58%	Douglas Kerr	385,628	US$1.3m	0%	no data