SPERO THERAPEUTICS INC

Ticker: SPRO CUSIP: 84833T103 Class: COM

EcoR1 Capital, LLC's Holding History (CIK: 0001587114)

Note: Option positions (PUT/CALL) are excluded.

Q3 2018
Shares 892,741 Value ($000) $9,383 Avg Close $11.61 Range $9.29 - $18.23