WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

UBS ASSET MANAGEMENT AMERICAS INC's Holding History (CIK: 0000861177)

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

Q1 2015
Shares 19,194 Value ($000) $64 Avg Close — Range —
Q4 2014
Shares 19,194 Value ($000) $120 Avg Close — Range —
Q3 2014
Shares 19,194 Value ($000) $160 Avg Close — Range —
Q2 2014
Shares 19,194 Value ($000) $237 Avg Close — Range —
Q1 2014
Shares 19,194 Value ($000) $242 Avg Close — Range —
Q4 2013
Shares 15,694 Value ($000) $148 Avg Close — Range —
Q3 2013
Shares 18,494 Value ($000) $170 Avg Close — Range —
Q2 2013
Shares 18,494 Value ($000) $114 Avg Close — Range —