DENDREON CORP

CUSIP: 24823Q107 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2014
Shares 400,752 Value ($000) $29 Avg Close — Range —
Q3 2014
Shares 365,992 Value ($000) $527 Avg Close — Range —
Q2 2014
Shares 262,044 Value ($000) $603 Avg Close — Range —
Q3 2013
Shares 261,775 Value ($000) $767 Avg Close — Range —
Q2 2013
Shares 79,122 Value ($000) $326 Avg Close — Range —