WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

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

Q4 2015
Shares 422,705 Value ($000) $12,499 Avg Close — Range —
Q3 2015
Shares 483,385 Value ($000) $18,760 Avg Close — Range —
Q2 2015
Shares 496,455 Value ($000) $32,642 Avg Close — Range —
Q1 2015
Shares 482,315 Value ($000) $24,420 Avg Close — Range —
Q4 2014
Shares 432,575 Value ($000) $27,598 Avg Close — Range —
Q3 2014
Shares 458,965 Value ($000) $44,267 Avg Close — Range —
Q2 2014
Shares 473,884 Value ($000) $65,097 Avg Close — Range —
Q1 2014
Shares 735,924 Value ($000) $83,167 Avg Close — Range —
Q4 2013
Shares 1,094,688 Value ($000) $89,710 Avg Close — Range —
Q3 2013
Shares 1,139,510 Value ($000) $59,790 Avg Close — Range —
Q2 2013
Shares 1,146,650 Value ($000) $49,879 Avg Close — Range —