RPX CORP

CUSIP: 74972G103 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q1 2014
Shares 42,800 Value ($000) $696,784 Avg Close — Range —
Q4 2013
Shares 45,710 Value ($000) $772,499 Avg Close — Range —
Q3 2013
Shares 49,110 Value ($000) $861,389 Avg Close — Range —
Q2 2013
Shares 50,910 Value ($000) $855,288 Avg Close — Range —