EcoR1 Capital’s Spero Therapeutics SPRO Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2018 Q4	–	Sell	-892,741	Closed	-$9.38M	–	53
2018 Q3	$9.38M	Buy	+892,741	New	+$9.38M	0.85%	21