WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

TWO SIGMA INVESTMENTS, LP's Holding History (CIK: 0001179392)

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

Q2 2015
Shares 101,238 Value ($000) $130 Avg Close — Range —
Q4 2014
Shares 73,867 Value ($000) $463 Avg Close — Range —
Q2 2014
Shares 21,495 Value ($000) $265 Avg Close — Range —
Q1 2014
Shares 91,953 Value ($000) $1,161 Avg Close — Range —