SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

NORTHWESTERN MUTUAL INVESTMENT MANAGEMENT COMPANY, LLC's Holding History (CIK: 0001629649)

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

Q4 2015
Shares 12,451 Value ($000) $559 Avg Close — Range —
Q3 2015
Shares 11,170 Value ($000) $431 Avg Close — Range —
Q2 2015
Shares 11,170 Value ($000) $541 Avg Close — Range —
Q1 2015
Shares 11,190 Value ($000) $396 Avg Close — Range —