SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

Conestoga Capital Advisors, LLC's Holding History (CIK: 0001163744)

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

Q2 2013
Shares 432,659 Value ($000) $24,034 Avg Close — Range —
Q1 2013
Shares 415,984 Value ($000) $24,639 Avg Close — Range —