SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q3 2013
Shares 64,259 Value ($000) $4,879 Avg Close — Range —
Q2 2013
Shares 67,659 Value ($000) $3,758 Avg Close — Range —