SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

Matrix Capital Management Company, LP's Holding History (CIK: 0001410830)

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

Q4 2019
Shares 1,598,352 Value ($000) $182,628 Avg Close — Range —
Q3 2019
Shares 1,598,352 Value ($000) $136,499 Avg Close — Range —
Q2 2019
Shares 3,141,852 Value ($000) $217,448 Avg Close — Range —
Q1 2019
Shares 3,141,852 Value ($000) $230,109 Avg Close — Range —
Q4 2018
Shares 3,141,852 Value ($000) $178,017 Avg Close — Range —
Q3 2018
Shares 3,866,852 Value ($000) $298,212 Avg Close — Range —
Q2 2018
Shares 3,866,852 Value ($000) $256,720 Avg Close — Range —
Q1 2018
Shares 3,793,000 Value ($000) $198,526 Avg Close — Range —
Q4 2017
Shares 3,318,000 Value ($000) $177,513 Avg Close — Range —
Q3 2017
Shares 2,118,000 Value ($000) $115,240 Avg Close — Range —
Q2 2017
Shares 2,118,000 Value ($000) $109,585 Avg Close — Range —
Q1 2017
Shares 1,783,000 Value ($000) $112,079 Avg Close — Range —
Q4 2016
Shares 498,000 Value ($000) $26,279 Avg Close — Range —