SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

D.B. Root & Company, LLC's Holding History (CIK: 0001731717)

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

Q4 2019
Shares 2,843 Value ($000) $324 Avg Close — Range —
Q3 2019
Shares 2,935 Value ($000) $250 Avg Close — Range —
Q2 2019
Shares 5,565 Value ($000) $385 Avg Close — Range —
Q1 2019
Shares 3,320 Value ($000) $243 Avg Close — Range —
Q4 2018
Shares 7,880 Value ($000) $446 Avg Close — Range —
Q3 2018
Shares 6,685 Value ($000) $516 Avg Close — Range —
Q2 2018
Shares 7,980 Value ($000) $530 Avg Close — Range —
Q1 2018
Shares 9,555 Value ($000) $500 Avg Close — Range —