WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

GLOBEFLEX CAPITAL L P's Holding History (CIK: 0000921531)

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

Q4 2016
Shares 180 Value ($000) $1 Avg Close — Range —
Q3 2016
Shares 180 Value ($000) $0 Avg Close — Range —
Q2 2016
Shares 180 Value ($000) $0 Avg Close — Range —
Q1 2016
Shares 180 Value ($000) $0 Avg Close — Range —
Q4 2015
Shares 368 Value ($000) $1 Avg Close — Range —
Q3 2015
Shares 601 Value ($000) $1 Avg Close — Range —
Q2 2015
Shares 463,394 Value ($000) $593 Avg Close — Range —
Q1 2015
Shares 60,651 Value ($000) $201 Avg Close — Range —
Q4 2014
Shares 60,675 Value ($000) $380 Avg Close — Range —
Q3 2014
Shares 60,608 Value ($000) $505 Avg Close — Range —