Robin Kramer - 30 Jun 2023 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: 30 Jun 2023
Net transactions value: -$34,752
Form type: 4
Filing time: 05 Jul 2023, 17:35:35 UTC
Previous filing: 22 Feb 2023
Next filing: 12 Dec 2023
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	+252	+6.6%	$0.000000	4,096	30 Jun 2023	Direct
transaction	BIIB	Common Stock	Tax liability	$34,752	-122	-3%	$284.85	3,974	30 Jun 2023	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	-252	-100%	$0.000000^*	0	30 Jun 2023	Common Stock	252	$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 vested in three (3) equal annual installments commencing one year after the grant date of 07/01/2020.