WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

NORTHERN TRUST CORP's Holding History (CIK: 0000073124)

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

Q1 2017
Shares 74,903 Value ($000) $9,892 Avg Close — Range —
Q4 2016
Shares 73,940 Value ($000) $8,818 Avg Close — Range —
Q3 2016
Shares 69,398 Value ($000) $5,929 Avg Close — Range —
Q2 2016
Shares 66,808 Value ($000) $1,834 Avg Close — Range —
Q1 2016
Shares 70,538 Value ($000) $629 Avg Close — Range —
Q4 2015
Shares 68,108 Value ($000) $2,014 Avg Close — Range —
Q3 2015
Shares 65,803 Value ($000) $2,554 Avg Close — Range —
Q2 2015
Shares 71,712 Value ($000) $4,716 Avg Close — Range —
Q1 2015
Shares 72,069 Value ($000) $3,649 Avg Close — Range —
Q4 2014
Shares 73,210 Value ($000) $4,671 Avg Close — Range —
Q3 2014
Shares 75,391 Value ($000) $7,271 Avg Close — Range —
Q2 2014
Shares 75,653 Value ($000) $10,393 Avg Close — Range —
Q1 2014
Shares 85,728 Value ($000) $9,689 Avg Close — Range —
Q4 2013
Shares 91,762 Value ($000) $7,520 Avg Close — Range —
Q3 2013
Shares 88,225 Value ($000) $4,630 Avg Close — Range —
Q2 2013
Shares 91,724 Value ($000) $3,989 Avg Close — Range —