ARROWHEAD RESH CORP

CUSIP: 042797209 Class: COM

RA CAPITAL MANAGEMENT, L.P.'s Holding History (CIK: 0001346824)

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

Q2 2014
Shares 604,346 Value ($000) $8,648 Avg Close — Range —
Q1 2014
Shares 2,941,916 Value ($000) $48,306 Avg Close — Range —
Q4 2013
Shares 2,049,220 Value ($000) $22,234 Avg Close — Range —
Q3 2013
Shares 879,561 Value ($000) $5,005 Avg Close — Range —
Q2 2013
Shares 3,114,755 Value ($000) $6,230 Avg Close — Range —