UNITED STATIONERS INC

CUSIP: 913004107 Class: COM

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

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

Q1 2015
Shares 10,009 Value ($000) $410 Avg Close — Range —
Q3 2014
Shares 8,844 Value ($000) $332 Avg Close — Range —
Q2 2014
Shares 4,839 Value ($000) $201 Avg Close — Range —
Q1 2014
Shares 27,772 Value ($000) $1,141 Avg Close — Range —
Q4 2013
Shares 6,561 Value ($000) $301 Avg Close — Range —
Q3 2013
Shares 7,178 Value ($000) $312 Avg Close — Range —
Q2 2013
Shares 33,957 Value ($000) $1,139 Avg Close — Range —