Arkolith/Insider Trading/BIIB/Form 4

Keeney Adam

Head of Corporate DevelopmentBIOGEN INC. (BIIB) · full profile →Form 4 · filed May 5, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
3
2 non-derivative · 1 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
May 1, 2026Option exercise(M)939—$07K
May 1, 2026Tax withholding(F)455$187.06$85K6K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
May 1, 2026Option exercise(M)939—$00

Transaction Codes

M
Option exercise / conversion
F
Shares withheld for taxes

Data Source & Provenance

Parsed from a single SEC EDGAR Form 4 filing (accession 0000875045-26-000046) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML