BIOGEN INC

CUSIP: 09062x103 Class: COM

DF DENT & CO INC's Holding History (CIK: 0000934999)

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

Q3 2016
Shares 5,737 Value ($000) $1,796 Avg Close — Range —
Q2 2016
Shares 87,982 Value ($000) $21,276 Avg Close — Range —
Q1 2016
Shares 113,413 Value ($000) $29,524 Avg Close — Range —
Q1 2015
Shares 123,847 Value ($000) $52,293 Avg Close — Range —
Q4 2014
Shares 123,573 Value ($000) $41,947 Avg Close — Range —