BIOGEN INC. — Director's Dealing 2025

Feb 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: BIOGEN INC. (BIIB)
CIK: 0000875045
Period of Report: 2025-02-06

Reporting Person: Izzar Rachid (Head of Global Product Strat.)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-06	Restricted Stock Unit	$0	A	9130	Acquired	2028-02-06	Common Stock (9130)	Direct

Footnotes

F1: The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025.