SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

Avidity Partners Management LP's Holding History (CIK: 0001791827)

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

Q3 2020
Shares 531,100 Value ($000) $103,931 Avg Close — Range —
Q2 2020
Shares 250,900 Value ($000) $42,633 Avg Close — Range —
Q1 2020
Shares 580,000 Value ($000) $66,920 Avg Close — Range —