WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

Virtu Financial LLC's Holding History (CIK: 0001533964)

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

Q4 2017
Shares 133,705 Value ($000) $190 Avg Close — Range —
Q3 2017
Shares 34,096 Value ($000) $110 Avg Close — Range —