DENDREON CORP

CUSIP: 24823Q107 Class: COM

PRIMECAP MANAGEMENT CO/CA/'s Holding History (CIK: 0000763212)

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

Q3 2014
Shares 2,416,800 Value ($000) $3,480 Avg Close — Range —
Q2 2014
Shares 2,901,800 Value ($000) $6,674 Avg Close — Range —
Q1 2014
Shares 3,069,700 Value ($000) $9,178 Avg Close — Range —
Q4 2013
Shares 3,069,700 Value ($000) $9,178 Avg Close — Range —
Q3 2013
Shares 3,069,700 Value ($000) $8,994 Avg Close — Range —
Q2 2013
Shares 3,770,700 Value ($000) $15,535 Avg Close — Range —