WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

MUFG Americas Holdings Corp's Holding History (CIK: 0001011659)

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

Q1 2015
Shares 1,540 Value ($000) $5 Avg Close — Range —
Q4 2014
Shares 1,220 Value ($000) $8 Avg Close — Range —
Q3 2014
Shares 710 Value ($000) $6 Avg Close — Range —
Q2 2013
Shares 3,700 Value ($000) $23 Avg Close — Range —
Q1 2013
Shares 41,900 Value ($000) $225 Avg Close — Range —
Q4 2012
Shares 41,900 Value ($000) $225 Avg Close — Range —
Q3 2012
Shares 41,900 Value ($000) $225 Avg Close — Range —
Q2 2012
Shares 41,900 Value ($000) $271 Avg Close — Range —