Robin Kramer - 06 Dec 2024 Form 4 Insider Report for BIOGEN INC. (BIIB)

Role: Chief Accounting Officer
Signature: /s/ Wendell Taylor, attorney-in-fact for Robin Kramer
Issuer symbol: BIIB
Transactions as of: 06 Dec 2024
Net transactions value: -$26,823
Form type: 4
Filing time: 09 Dec 2024, 16:56:12 UTC
Previous filing: 18 Mar 2024
Next filing: 07 Feb 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BIIB	Common Stock	Options Exercise	$0	+351	+5.6%	$0.000000	6,578	06 Dec 2024	Direct
transaction	BIIB	Common Stock	Tax liability	$26,823	-170	-2.6%	$157.78	6,408	06 Dec 2024	Direct

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	Options Exercise	$0	-351	-100%	$0.000000	0	06 Dec 2024	Common Stock	351	$0.000000	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The restricted stock units vest in three (3) equal annual installments commencing on the first anniversary of the grant date of 12/8/2021.