WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

NATIXIS's Holding History (CIK: 0001274981)

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

Q3 2013
Shares 10,400 Value ($000) $95 Avg Close — Range —
Q2 2013
Shares 18,700 Value ($000) $115 Avg Close — Range —