Arkolith/Insider Trading/BIIB/Form 4

Alexander Susan H

EVP Chief Legal OfficerBIOGEN INC. (BIIB) · full profile →Form 4 · filed Feb 10, 2026
No Open-Market Flow
Open-Market Buys
$0
Open-Market Sells
$0
Net Open-Market Flow
$0
Transactions
9
6 non-derivative · 3 derivative

Non-Derivative Transactions (Table I)

DateActionSharesPriceValueOwned After
Feb 6, 2026Option exercise(M)5K—$043K
Feb 6, 2026Tax withholding(F)2K$201.18$305K42K
Feb 6, 2026Tax withholding(F)931$201.18$187K38K
Feb 6, 2026Option exercise(M)2K—$039K
Feb 6, 2026Tax withholding(F)1K$201.18$213K37K
Feb 6, 2026Option exercise(M)2K—$038K

Derivative Transactions (Table II)

DateActionSharesPriceValueOwned After
Feb 6, 2026Option exercise(M)5K—$010K
Feb 6, 2026Option exercise(M)2K—$02K
Feb 6, 2026Option exercise(M)2K—$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 0000875045-26-000015) within minutes of acceptance. Every field above traces to the original document. Verify it directly:

View original filing on SEC.govRaw Form 4 XML