WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2017
Shares 2,402,661 Value ($000) $3,412 Avg Close — Range —
Q3 2017
Shares 2,392,573 Value ($000) $7,704 Avg Close — Range —
Q2 2017
Shares 1,746,918 Value ($000) $4,315 Avg Close — Range —
Q1 2017
Shares 1,537,477 Value ($000) $4,213 Avg Close — Range —
Q4 2016
Shares 1,877,284 Value ($000) $6,083 Avg Close — Range —
Q3 2016
Shares 1,712,108 Value ($000) $3,219 Avg Close — Range —
Q2 2016
Shares 1,657,424 Value ($000) $4,193 Avg Close — Range —
Q1 2016
Shares 1,565,951 Value ($000) $3,336 Avg Close — Range —
Q4 2015
Shares 1,596,919 Value ($000) $4,296 Avg Close — Range —
Q3 2015
Shares 1,646,491 Value ($000) $2,074 Avg Close — Range —
Q2 2015
Shares 1,584,334 Value ($000) $2,028 Avg Close — Range —
Q1 2015
Shares 2,153,781 Value ($000) $7,129 Avg Close — Range —
Q4 2014
Shares 2,012,397 Value ($000) $12,617 Avg Close — Range —
Q3 2014
Shares 2,451,505 Value ($000) $20,421 Avg Close — Range —
Q2 2014
Shares 2,410,041 Value ($000) $29,764 Avg Close — Range —
Q1 2014
Shares 2,405,730 Value ($000) $30,361 Avg Close — Range —
Q4 2013
Shares 2,329,214 Value ($000) $21,941 Avg Close — Range —
Q3 2013
Shares 2,247,705 Value ($000) $20,634 Avg Close — Range —
Q2 2013
Shares 2,164,471 Value ($000) $13,290 Avg Close — Range —