WILLBROS GROUP INC DEL

CUSIP: 969203108 Class: COMMON STOCK

PDT Partners, LLC's Holding History (CIK: 0001564702)

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

Q1 2014
Shares 19,564 Value ($000) $247 Avg Close — Range —
Q3 2013
Shares 64,308 Value ($000) $590 Avg Close — Range —
Q2 2013
Shares 17,383 Value ($000) $107 Avg Close — Range —