WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q1 2017
Shares 56 Value ($000) $0 Avg Close — Range —
Q4 2016
Shares 239 Value ($000) $1 Avg Close — Range —
Q3 2016
Shares 719 Value ($000) $1 Avg Close — Range —