TOWERSTREAM CORP

CUSIP: 892000100 Class: CMN

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

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

Q1 2014
Shares 119,594 Value ($000) $281 Avg Close — Range —
Q4 2013
Shares 119,594 Value ($000) $354 Avg Close — Range —
Q3 2013
Shares 119,594 Value ($000) $342 Avg Close — Range —
Q2 2013
Shares 115,693 Value ($000) $295 Avg Close — Range —
Q1 2013
Shares 98,158 Value ($000) $219 Avg Close — Range —