SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q3 2013
Shares 196,711 Value ($000) $14,934 Avg Close — Range —
Q2 2013
Shares 25,850 Value ($000) $1,436 Avg Close — Range —