SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

ArrowMark Colorado Holdings LLC's Holding History (CIK: 0001483859)

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

Q2 2014
Shares 41,663 Value ($000) $1,594 Avg Close — Range —
Q1 2014
Shares 41,663 Value ($000) $1,898 Avg Close — Range —
Q4 2013
Shares 41,600 Value ($000) $1,659 Avg Close — Range —
Q3 2013
Shares 41,600 Value ($000) $1,823 Avg Close — Range —
Q2 2013
Shares 41,600 Value ($000) $1,309 Avg Close — Range —