SOURCEFIRE INC

CUSIP: 83616T108 Class: COMMON STOCK

GILDER GAGNON HOWE & CO LLC's Holding History (CIK: 0000902464)

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

Q3 2013
Shares 2,853 Value ($000) $217 Avg Close — Range —
Q2 2013
Shares 354,399 Value ($000) $19,686,864 Avg Close — Range —