SYNTHETIC BIOLOGICS INC

CUSIP: 87164U102 Class: COM

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

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

Q1 2017
Shares 200,601 Value ($000) $127 Avg Close — Range —
Q4 2016
Shares 201,301 Value ($000) $154 Avg Close — Range —
Q3 2016
Shares 160,201 Value ($000) $276 Avg Close — Range —
Q2 2016
Shares 158,701 Value ($000) $286 Avg Close — Range —