Arkolith/Insider Trading/BIIB/Form 4

Singhal Priya

Head of DevelopmentBIOGEN INC. (BIIB) · full profile →Form 4 · filed Feb 10, 2026
Net Selling
Open-Market Buys
$0
Open-Market Sells
$532K
Net Open-Market Flow
-$532K
Transactions
7
5 non-derivative · 2 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 9, 2026Sell(S)3K$199.83$532K8K
Feb 6, 2026Tax withholding(F)1K$201.18$284K11K
Feb 6, 2026Option exercise(M)2K—$08K
Feb 6, 2026Tax withholding(F)1K$201.18$212K7K
Feb 6, 2026Option exercise(M)5K—$012K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 6, 2026Option exercise(M)5K—$09K
Feb 6, 2026Option exercise(M)2K—$02K

Transaction Codes

S
Open-market sale
F
Shares withheld for taxes
M
Option exercise / conversion

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000875045-26-000023) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML