POSTROCK ENERGY CORP

CUSIP: 737525105 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q3 2014
Shares 74,695 Value ($000) $87 Avg Close — Range —
Q2 2014
Shares 75,640 Value ($000) $113 Avg Close — Range —
Q1 2014
Shares 76,384 Value ($000) $96 Avg Close — Range —
Q4 2013
Shares 76,501 Value ($000) $89 Avg Close — Range —
Q3 2013
Shares 76,501 Value ($000) $99 Avg Close — Range —
Q2 2013
Shares 77,688 Value ($000) $119 Avg Close — Range —