AVROBIO Ownership

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

Recent Insider Transactions

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 60.23% of the company

Ownership	Name	Shares	Current Value	Change %	Portfolio %
10.1%	Atlas Venture L.P.	4,541,381	US$5.6m	0%	0.6%
8.92%	BML Capital Management, LLC	4,001,627	US$5.0m	0%	3.48%
7.3%	ADAR1 Capital Management, LLC	3,276,498	US$4.1m	6,430%	1.69%
6.09%	Newtyn Management, LLC	2,734,175	US$3.4m	36.7%	0.45%
3.57%	The Vanguard Group, Inc.	1,601,834	US$2.0m	1.71%	no data
3.24%	Acadian Asset Management LLC	1,454,264	US$1.8m	-15.7%	0.01%
2.25%	Aisling Capital Management LP	1,009,779	US$1.3m	0%	0.51%
1.69%	Renaissance Technologies LLC	758,943	US$941.1k	46.4%	no data
1.6%	Ikarian Capital, LLC	718,259	US$890.6k	0%	0.22%
1.45%	Vazirani Asset Management LLC	650,000	US$806.0k	38.8%	8.03%
1.4%	Morgan Stanley, Investment Banking and Brokerage Investments	628,259	US$779.0k	20.5%	no data
1.37%	BlackRock, Inc.	614,708	US$762.2k	-1.26%	no data
1.25%	Terrapin Asset Management, LLC	558,787	US$692.9k	0%	1.15%
1.15%	Citadel Advisors LLC	515,216	US$638.9k	1.03%	no data
1.11%	Affinity Asset Advisors, LLC	500,000	US$620.0k	0%	0.15%
1.01%	Aldebaran Capital, LLC	454,986	US$564.2k	-3.22%	0.56%
0.89%	Braden Leonard	400,000	US$496.0k	-4.76%	no data
0.89%	FNY Investment Advisers, LLC	400,000	US$496.0k	77.8%	0.61%
0.82%	Geode Capital Management, LLC	366,516	US$454.5k	3.79%	no data
0.79%	Gabelli & Company Investment Advisers, Inc.	353,000	US$437.7k	0%	0.11%
0.77%	GAMCO Investors, Inc.	343,421	US$425.8k	0%	no data
0.7%	Western Standard, LLC	312,912	US$388.0k	0.82%	0.35%
0.69%	Two Sigma Investments, LP	309,516	US$383.8k	-5.61%	no data
0.59%	Two Sigma Advisers, LP	265,100	US$328.7k	12.1%	no data
0.56%	Christopher Paige	252,512	US$313.1k	0%	no data