SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

ProShare Advisors LLC's Holding History (CIK: 0001357955)

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

Q3 2013
Shares 20,880 Value ($000) $1,585 Avg Close — Range —
Q2 2013
Shares 21,501 Value ($000) $1,194 Avg Close — Range —