WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

ALGERT GLOBAL LLC's Holding History (CIK: 0001275218)

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

Q3 2017
Shares 285,448 Value ($000) $919 Avg Close — Range —
Q4 2014
Shares 14,456 Value ($000) $91 Avg Close — Range —
Q3 2013
Shares 21,258 Value ($000) $195 Avg Close — Range —
Q2 2013
Shares 12,448 Value ($000) $76 Avg Close — Range —