ALTA MESA RES INC

CUSIP: 02133L109 Class: COMMON STOCK

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

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

Q1 2019
Shares 154,284 Value ($000) $41 Avg Close — Range —
Q4 2018
Shares 154,284 Value ($000) $154 Avg Close — Range —
Q3 2018
Shares 154,284 Value ($000) $645 Avg Close — Range —
Q2 2018
Shares 146,798 Value ($000) $1,000 Avg Close — Range —