AVALANCHE BIOTECHNOLOGIES IN

CUSIP: 05337G107 Class: COM

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

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

Q1 2015
Shares 2,117,473 Value ($000) $85,800 Avg Close — Range —
Q4 2014
Shares 1,614,669 Value ($000) $87,192 Avg Close — Range —
Q3 2014
Shares 2,047,679 Value ($000) $70,010 Avg Close — Range —