WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM's Holding History (CIK: 0000919079)

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

Q1 2017
Shares 3,600 Value ($000) $475 Avg Close — Range —
Q4 2016
Shares 49,800 Value ($000) $5,939 Avg Close — Range —
Q3 2016
Shares 50,100 Value ($000) $4,281 Avg Close — Range —
Q2 2016
Shares 52,800 Value ($000) $1,450 Avg Close — Range —
Q1 2016
Shares 44,300 Value ($000) $395 Avg Close — Range —
Q4 2015
Shares 13,000 Value ($000) $384 Avg Close — Range —
Q3 2015
Shares 11,700 Value ($000) $454 Avg Close — Range —
Q2 2015
Shares 6,200 Value ($000) $408 Avg Close — Range —
Q1 2015
Shares 71,300 Value ($000) $4,202 Avg Close — Range —
Q4 2014
Shares 71,300 Value ($000) $4,202 Avg Close — Range —
Q3 2014
Shares 71,300 Value ($000) $6,877 Avg Close — Range —
Q2 2014
Shares 74,000 Value ($000) $10,165 Avg Close — Range —
Q1 2014
Shares 86,220 Value ($000) $10,105 Avg Close — Range —
Q4 2013
Shares 80,600 Value ($000) $6,707 Avg Close — Range —
Q3 2013
Shares 80,887 Value ($000) $4,244 Avg Close — Range —
Q2 2013
Shares 78,587 Value ($000) $3,419 Avg Close — Range —