ARSANIS INC

CUSIP: 042873109 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2018
Shares 7,079 Value ($000) $16 Avg Close — Range —
Q3 2018
Shares 7,079 Value ($000) $11 Avg Close — Range —
Q2 2018
Shares 7,079 Value ($000) $26 Avg Close — Range —
Q1 2018
Shares 7,079 Value ($000) $162 Avg Close — Range —