WILLIAMS CLAYTON ENERGY INC

CUSIP: 969490101 Class: CMN

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q1 2017
Shares 8,700 Value ($000) $1,149 Avg Close — Range —
Q4 2016
Shares 8,400 Value ($000) $1,002 Avg Close — Range —
Q1 2016
Shares 10,850 Value ($000) $94 Avg Close — Range —
Q4 2015
Shares 8,900 Value ($000) $263 Avg Close — Range —
Q3 2015
Shares 8,900 Value ($000) $345 Avg Close — Range —
Q2 2015
Shares 7,700 Value ($000) $506 Avg Close — Range —
Q1 2015
Shares 7,700 Value ($000) $390 Avg Close — Range —
Q4 2014
Shares 7,700 Value ($000) $491 Avg Close — Range —
Q3 2014
Shares 7,500 Value ($000) $723 Avg Close — Range —
Q2 2014
Shares 7,700 Value ($000) $1,058 Avg Close — Range —
Q1 2014
Shares 7,700 Value ($000) $870 Avg Close — Range —
Q4 2013
Shares 6,400 Value ($000) $524 Avg Close — Range —
Q3 2013
Shares 6,400 Value ($000) $336 Avg Close — Range —
Q2 2013
Shares 6,400 Value ($000) $278 Avg Close — Range —