ULTRA PETROLEUM CORP

CUSIP: 903914109 Class: COM

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

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

Q1 2016
Shares 324,513 Value ($000) $162 Avg Close — Range —
Q4 2015
Shares 283,897 Value ($000) $710 Avg Close — Range —
Q3 2015
Shares 279,391 Value ($000) $1,785 Avg Close — Range —
Q2 2015
Shares 279,791 Value ($000) $3,503 Avg Close — Range —
Q1 2015
Shares 286,919 Value ($000) $4,485 Avg Close — Range —
Q4 2014
Shares 290,956 Value ($000) $3,829 Avg Close — Range —
Q3 2014
Shares 288,920 Value ($000) $6,720 Avg Close — Range —
Q2 2014
Shares 305,690 Value ($000) $9,076 Avg Close — Range —
Q1 2014
Shares 278,190 Value ($000) $7,481 Avg Close — Range —
Q4 2013
Shares 276,890 Value ($000) $5,995 Avg Close — Range —
Q3 2013
Shares 274,990 Value ($000) $5,657 Avg Close — Range —
Q2 2013
Shares 266,492 Value ($000) $5,282 Avg Close — Range —
Q1 2013
Shares 265,870 Value ($000) $5,344 Avg Close — Range —