ARSANIS INC

CUSIP: 042873109 Class: COM

SPHERA FUNDS MANAGEMENT LTD.'s Holding History (CIK: 0001496201)

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

Q1 2018
Shares 114,972 Value ($000) $2,632 Avg Close — Range —
Q4 2017
Shares 269,268 Value ($000) $3,436 Avg Close — Range —