bluebird bio Ownership

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

Recent Insider Transactions

NasdaqGS:BLUE Recent Insider Transactions by Companies or Individuals
Date	Value	Name	Entity	Shares	Max Price
04 Mar 24	SellUS$6,986	Thomas Klima	Individual	4,573	US$1.53
04 Mar 24	SellUS$9,311	Andrew Obenshain	Individual	6,095	US$1.53
01 Mar 24	SellUS$10,342	Richard Colvin	Individual	6,770	US$1.53
05 Feb 24	SellUS$4,708	Joseph Vittiglio	Individual	5,217	US$0.90
05 Feb 24	SellUS$2,449	Thomas Klima	Individual	2,714	US$0.90
05 Feb 24	SellUS$1,696	Andrew Obenshain	Individual	1,879	US$0.90
05 Jan 24	SellUS$845	Richard Colvin	Individual	597	US$1.42
05 Jan 24	SellUS$4,520	Andrew Obenshain	Individual	3,162	US$1.43
06 Dec 23	SellUS$20,437	Christopher Krawtschuk	Individual	4,526	US$4.52
03 Nov 23	SellUS$2,555	Andrew Obenshain	Individual	807	US$3.17
02 Nov 23	SellUS$6,975	Richard Colvin	Individual	2,343	US$2.98
05 Sep 23	SellUS$3,493	Thomas Klima	Individual	922	US$3.79
10 Aug 23	SellUS$59,956	Andrew Obenshain	Individual	16,929	US$3.54
02 Jun 23	SellUS$14,451	Thomas Klima	Individual	4,130	US$3.50

Insider Trading Volume

Insider Buying: BLUE insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of BLUE?
Owner Type	Number of Shares	Ownership Percentage
Private Companies	44,844	0.0233%
Individual Insiders	857,984	0.445%
General Public	68,256,758	35.4%
Institutions	123,582,350	64.1%

Dilution of Shares: Shareholders have been substantially diluted in the past year, with total shares outstanding growing by 81.2%.

Top Shareholders

Top 25 shareholders own 46.58% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
4.66%	BlackRock, Inc.	8,983,001	US$8.9m	1.75%	no data
4.55%	The Vanguard Group, Inc.	8,775,379	US$8.7m	56.2%	no data
4.19%	Granahan Investment Management, LLC	8,077,697	US$8.0m	57.2%	0.3%
3.59%	Alyeska Investment Group, L.P.	6,912,502	US$6.8m	0%	0.05%
2.95%	Pictet Asset Management Limited	5,687,334	US$5.6m	10.5%	no data
2.07%	Norges Bank Investment Management	3,995,600	US$4.0m	10,600%	no data
1.78%	State Street Global Advisors, Inc.	3,428,135	US$3.4m	-75.3%	no data
1.77%	Millennium Management LLC	3,413,612	US$3.4m	960%	no data
1.73%	Palo Alto Investors LP	3,333,333	US$3.3m	0%	0.38%
1.63%	Ghisallo Capital Management LLC	3,150,000	US$3.1m	0%	0.33%
1.55%	Dimensional Fund Advisors LP	2,995,274	US$3.0m	77.4%	no data
1.51%	Two Sigma Investments, LP	2,910,812	US$2.9m	0%	0.01%
1.43%	Columbia Management Investment Advisers, LLC	2,755,700	US$2.7m	19.7%	no data
1.37%	Renaissance Technologies LLC	2,638,700	US$2.6m	456%	no data
1.3%	Bleichroeder LP	2,500,000	US$2.5m	178%	0.62%
1.23%	FMR LLC	2,376,559	US$2.4m	1,340%	no data
1.23%	Geode Capital Management, LLC	2,369,684	US$2.3m	6.67%	no data
1.13%	Hudson Bay Capital Management LP	2,183,437	US$2.2m	567%	0.02%
1.12%	Vestal Point Capital, LP	2,150,000	US$2.1m	0%	0.26%
1.09%	Jackson National Asset Management, LLC	2,107,010	US$2.1m	100%	0.05%
1.06%	PFM Health Sciences, LP	2,042,651	US$2.0m	-66.2%	0.14%
1.04%	Farallon Capital Management, L.L.C.	2,000,000	US$2.0m	0%	0.02%
0.89%	Frazier Life Sciences Management, LP	1,709,907	US$1.7m	0%	0.08%
0.88%	Tang Capital Management, LLC	1,700,000	US$1.7m	-60.3%	0.2%
0.82%	JP Morgan Asset Management	1,583,300	US$1.6m	0.38%	no data