SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

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

Q3 2016
Shares 8,745 Value ($000) $472 Avg Close — Range —
Q2 2016
Shares 9,877 Value ($000) $399 Avg Close — Range —
Q1 2016
Shares 10,006 Value ($000) $351 Avg Close — Range —
Q4 2015
Shares 10,039 Value ($000) $451 Avg Close — Range —
Q3 2015
Shares 10,258 Value ($000) $396 Avg Close — Range —
Q2 2015
Shares 7,913 Value ($000) $383 Avg Close — Range —
Q1 2015
Shares 8,123 Value ($000) $287 Avg Close — Range —
Q4 2014
Shares 6,991 Value ($000) $225 Avg Close — Range —