BIOGEN INC. — Director's Dealing 2023

Feb 10, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN INC. (BIIB)
CIK: 0000875045
Period of Report: 2023-02-08

Reporting Person: MCDONNELL MICHAEL R (EVP, Chief Financial Officer)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-02-08	Restricted Stock Unit	$0	A	7005	Acquired	2026-02-08	Common Stock (7005)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6745	Direct

Footnotes

F1: The restricted stock units vest in three (3) equal annual installments commencing one year after the grant date of 02/8/2023.