SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

FIRST TRUST ADVISORS LP's Holding History (CIK: 0001125816)

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

Q3 2013
Shares 5,008 Value ($000) $380 Avg Close — Range —
Q2 2013
Shares 15,610 Value ($000) $867 Avg Close — Range —