SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q3 2013
Shares 34,631 Value ($000) $2,629 Avg Close — Range —
Q2 2013
Shares 34,631 Value ($000) $1,924 Avg Close — Range —