Generation Bio Co. (GBIO)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Atlas Venture Life Science Advisors, Llc	8,279,484	$13,661,149	1.62%
2.	Fmr Llc	5,352,399	$8,831,459	0%
3.	Bellevue Group Ag	3,617,080	$5,968,182	0.09%
4.	Blackrock Inc.	3,168,415	$5,227,885	0%
5.	Vanguard Group Inc	2,552,251	$4,211,214	0%