SEATTLE GENETICS INC

CUSIP: 812578102 Class: COM

Granahan Investment Management, LLC's Holding History (CIK: 0001026710)

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

Q4 2013
Shares 9,300 Value ($000) $371 Avg Close — Range —
Q3 2013
Shares 371,850 Value ($000) $16,298 Avg Close — Range —
Q2 2013
Shares 397,600 Value ($000) $12,508 Avg Close — Range —