GASTAR EXPL INC NEW

CUSIP: 36729W202 Class: COMMON STOCK

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

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

Q1 2018
Shares 278,819 Value ($000) $190 Avg Close — Range —
Q4 2017
Shares 284,359 Value ($000) $299 Avg Close — Range —
Q3 2017
Shares 273,492 Value ($000) $241 Avg Close — Range —
Q2 2017
Shares 309,300 Value ($000) $286 Avg Close — Range —
Q1 2016
Shares 173,833 Value ($000) $191 Avg Close — Range —
Q4 2015
Shares 150,335 Value ($000) $197 Avg Close — Range —
Q3 2015
Shares 147,703 Value ($000) $170 Avg Close — Range —
Q2 2015
Shares 148,203 Value ($000) $458 Avg Close — Range —
Q1 2015
Shares 127,527 Value ($000) $334 Avg Close — Range —
Q4 2014
Shares 130,127 Value ($000) $314 Avg Close — Range —
Q3 2014
Shares 129,573 Value ($000) $761 Avg Close — Range —
Q2 2014
Shares 100,396 Value ($000) $874 Avg Close — Range —
Q1 2014
Shares 100,796 Value ($000) $551 Avg Close — Range —