SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

GRANDFIELD & DODD, LLC's Holding History (CIK: 0001308016)

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

Q3 2020
Shares 14,625 Value ($000) $2,860 Avg Close — Range —
Q2 2020
Shares 14,556 Value ($000) $2,470 Avg Close — Range —
Q1 2020
Shares 14,091 Value ($000) $1,626 Avg Close — Range —
Q4 2019
Shares 13,810 Value ($000) $1,578 Avg Close — Range —
Q3 2019
Shares 13,235 Value ($000) $1,130 Avg Close — Range —
Q2 2019
Shares 12,225 Value ($000) $846 Avg Close — Range —
Q1 2019
Shares 11,460 Value ($000) $839 Avg Close — Range —
Q4 2018
Shares 11,315 Value ($000) $641 Avg Close — Range —
Q3 2018
Shares 11,171 Value ($000) $862 Avg Close — Range —
Q2 2018
Shares 11,076 Value ($000) $735 Avg Close — Range —
Q1 2018
Shares 11,006 Value ($000) $576 Avg Close — Range —
Q4 2017
Shares 11,356 Value ($000) $608 Avg Close — Range —
Q3 2017
Shares 11,086 Value ($000) $603 Avg Close — Range —
Q2 2017
Shares 10,001 Value ($000) $517 Avg Close — Range —
Q1 2017
Shares 9,506 Value ($000) $598 Avg Close — Range —
Q4 2016
Shares 9,411 Value ($000) $497 Avg Close — Range —
Q3 2016
Shares 8,581 Value ($000) $463 Avg Close — Range —
Q2 2016
Shares 8,001 Value ($000) $323 Avg Close — Range —
Q1 2016
Shares 7,588 Value ($000) $266 Avg Close — Range —