WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM's Holding History (CIK: 0000938076)

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

Q1 2015
Shares 41,273 Value ($000) $137 Avg Close — Range —
Q4 2014
Shares 41,273 Value ($000) $259 Avg Close — Range —
Q3 2014
Shares 46,240 Value ($000) $385 Avg Close — Range —
Q2 2014
Shares 41,273 Value ($000) $510 Avg Close — Range —
Q1 2014
Shares 41,273 Value ($000) $521 Avg Close — Range —
Q4 2013
Shares 54,927 Value ($000) $517 Avg Close — Range —
Q3 2013
Shares 54,927 Value ($000) $504 Avg Close — Range —
Q2 2013
Shares 54,927 Value ($000) $337 Avg Close — Range —