RPX CORP

CUSIP: 74972G103 Class: COM

OBERWEIS ASSET MANAGEMENT INC/'s Holding History (CIK: 0000937886)

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

Q4 2014
Shares 58,800 Value ($000) $810 Avg Close — Range —
Q3 2014
Shares 58,800 Value ($000) $807 Avg Close — Range —
Q2 2014
Shares 71,100 Value ($000) $1,262 Avg Close — Range —
Q1 2014
Shares 85,100 Value ($000) $1,385 Avg Close — Range —
Q4 2013
Shares 85,600 Value ($000) $1,447 Avg Close — Range —
Q3 2013
Shares 30,500 Value ($000) $535 Avg Close — Range —
Q2 2013
Shares 61,700 Value ($000) $1,037 Avg Close — Range —