BIOGEN INC. — insider transactions
2 transactions on record · CIK 875045
Aggregates
computed from the filings belowPurchases, 12m
0
count of open-market buys
Sales, 12m
2
count of open-market sales
Buy / sell ratio, 12m
0.00
purchases per sale
Distinct insiders, 12m
1
Bought, 3m
$0
Sold, 3m
$239.7K
Median disclosure lag
1.5 d
trade date to filing date
Largest single trade, 24m
$120.6K
2026-08-03
Director share, 12m
100.0%
of transactions where role is stated
Current run
2 sells
consecutive same-direction transactions
Net 3m flow
-$239.7K
purchases minus sales
Total on record
2