COMSCORE INC

CUSIP: 20564W105 Class: COM

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q3 2013
Shares 225,938 Value ($000) $6,545 Avg Close — Range —
Q2 2013
Shares 231,798 Value ($000) $5,654 Avg Close — Range —