WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

PRELUDE CAPITAL MANAGEMENT, LLC's Holding History (CIK: 0001387508)

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

Q4 2016
Shares 16,300 Value ($000) $53 Avg Close — Range —
Q2 2016
Shares 10,400 Value ($000) $26 Avg Close — Range —
Q1 2015
Shares 10,700 Value ($000) $35 Avg Close — Range —
Q4 2014
Shares 21,100 Value ($000) $132 Avg Close — Range —
Q3 2014
Shares 4,500 Value ($000) $37 Avg Close — Range —
Q2 2014
Shares 10,900 Value ($000) $135 Avg Close — Range —