PROS HOLDINGS INC

CUSIP: 74346Y103 Class: Common Stock

GW&K Investment Management, LLC's Holding History (CIK: 0001082917)

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

Q4 2014
Shares 449,853 Value ($000) $12,362 Avg Close — Range —
Q3 2014
Shares 882,417 Value ($000) $22,237 Avg Close — Range —
Q2 2014
Shares 876,275 Value ($000) $23,169 Avg Close — Range —
Q1 2014
Shares 829,994 Value ($000) $26,153 Avg Close — Range —
Q4 2013
Shares 845,701 Value ($000) $33,743 Avg Close — Range —
Q3 2013
Shares 856,479 Value ($000) $29,283 Avg Close — Range —
Q2 2013
Shares 745,440 Value ($000) $22,326 Avg Close — Range —