Rachid Izzar - 01 Jul 2022 Form 4 Insider Report for BIOGEN INC. (BIIB)

Role: Head of Alzheimer's Disease
Signature: /s/ Wendell Taylor, attorney-in-fact for Rachid Izzar
Issuer symbol: BIIB
Transactions as of: 01 Jul 2022
Net transactions value: -$31,173
Form type: 4
Filing time: 06 Jul 2022, 19:28:26 UTC
Previous filing: 23 Feb 2022
Next filing: 06 Dec 2022
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	+504	+29%	$0.000000	2,258	01 Jul 2022	Direct
transaction	BIIB	Common Stock	Tax liability	$31,173	-148	-6.6%	$210.63	2,110	01 Jul 2022	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	-504	-50%	$0.000000	504	01 Jul 2022	Common Stock	504	$0.000000	Direct	F1

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

Explanation of Responses:

Id	Content
F1	This award was granted to the reporting person on July 1, 2020, and will vest in three equal installments on each anniversary of the grant date.