WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

North Star Investment Management Corp.'s Holding History (CIK: 0001342857)

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

Q2 2014
Shares 1,200 Value ($000) $15 Avg Close — Range —
Q1 2014
Shares 38,806 Value ($000) $490 Avg Close — Range —
Q4 2013
Shares 66,650 Value ($000) $628 Avg Close — Range —
Q3 2013
Shares 130,500 Value ($000) $1,198 Avg Close — Range —
Q2 2013
Shares 170,975 Value ($000) $1,050 Avg Close — Range —