Priya Singhal - 07 Feb 2024 Form 4 Insider Report for BIOGEN INC. (BIIB)

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	BIIB	Restricted Stock Unit	Award	$0	+6,650		$0.000000	6,650	07 Feb 2024	Common Stock	6,650	$0.000000	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Id	Content
F1	The restricted stock units vest in three (3) equal annual installments, commencing one year after the grant date of 02/07/2024.