WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

Invesco Ltd.'s Holding History (CIK: 0000914208)

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

Q4 2017
Shares 173,628 Value ($000) $247 Avg Close — Range —
Q3 2017
Shares 195,702 Value ($000) $630 Avg Close — Range —
Q2 2017
Shares 173,674 Value ($000) $429 Avg Close — Range —
Q1 2017
Shares 298,228 Value ($000) $817 Avg Close — Range —
Q4 2016
Shares 317,235 Value ($000) $1,028 Avg Close — Range —
Q3 2016
Shares 324,269 Value ($000) $610 Avg Close — Range —
Q2 2016
Shares 252,813 Value ($000) $640 Avg Close — Range —
Q1 2016
Shares 176,791 Value ($000) $377 Avg Close — Range —
Q4 2015
Shares 167,959 Value ($000) $452 Avg Close — Range —
Q3 2015
Shares 154,425 Value ($000) $195 Avg Close — Range —
Q2 2015
Shares 149,209 Value ($000) $191 Avg Close — Range —
Q1 2015
Shares 152,750 Value ($000) $506 Avg Close — Range —
Q4 2014
Shares 136,318 Value ($000) $855 Avg Close — Range —
Q3 2014
Shares 135,158 Value ($000) $1,126 Avg Close — Range —
Q2 2014
Shares 283,619 Value ($000) $3,503 Avg Close — Range —
Q1 2014
Shares 590,649 Value ($000) $7,454 Avg Close — Range —
Q4 2013
Shares 141,327 Value ($000) $1,331 Avg Close — Range —
Q3 2013
Shares 117,417 Value ($000) $1,078 Avg Close — Range —
Q2 2013
Shares 116,158 Value ($000) $714 Avg Close — Range —