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Transaction #14982 · Form 4 · 0000875045-25-000052

BIOGEN INC. · Exercise / conversion · Common Stock

BIOGEN INC. · Transacted December 1, 2025 · Filed December 3, 2025

Original SEC filing ↗

What does this filing report?

An SEC Form 4 filing for BIOGEN INC. records an exercise / conversion involving Common Stock on December 1, 2025. The reported quantity was 7,040. The filing date is December 3, 2025. This is one transaction record; amounts are not allocated among any joint reporting owners.

The acquisition category describes how securities were received. It does not by itself establish a cash purchase of common stock. Read the transaction code definitionsand the original filing before interpreting the amounts.

Transaction details

Company CIK
0000875045
Security type
Non-derivative
Acquisition type
Exercise / conversion · Code M
Quantity acquired
7,040
Reported price
0
Reference value
0
Currency
Currency not specified
Ownership
Direct
Holdings after transaction
19,847
Ownership description
Not reported
SEC acceptance time
Dec 3, 2025, 4:42 PM EST
10b5-1 indication
Not indicated

Reference value is reported quantity × reported price. It is not a confirmed cash payment or an estimate of a derivative's economic value. A missing currency is not assumed to be USD.

Reporting owners

These are the reporting owners named in the filing. Quantities and amounts are not allocated among co-reporters. Roles reflect this filing, not a current profile.

Company listings

BIIB · Nasdaq · linked security

The linked listing is identified separately from other current company listings.

Filing footnotes & remarks

F1
Each Restricted Stock Unit ("RSU") represents the right to receive, at settlement, one share of common stock.
F2
Each RSU vested on the third anniversary of the grant date of December 1, 2022.

Footnotes are reproduced as plain text from the current source filing. For the full context, read the original SEC filing.

This record was updated Eastern Time. This is the stored record update time, not the transaction date. Report a correction.