ADA ES INC

CUSIP: 005208103 Class: CMN

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

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

Q2 2013
Shares 17,537 Value ($000) $739 Avg Close — Range —
Q1 2013
Shares 15,677 Value ($000) $417 Avg Close — Range —