Christopher Viehbacher - Feb 6, 2025 Form 4 Insider Report for BIOGEN INC. (BIIB)

Role
President and CEO, Director
Signature
/s/ Wendell Taylor, attorney-in-fact for Christopher A. Viehbacher
Stock symbol
BIIB
Transactions as of
Feb 6, 2025
Transactions value $
-$452,461
Form type
4
Date filed
2/10/2025, 06:55 PM
Previous filing
Feb 9, 2024
Next filing
Dec 3, 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 +9.01K +128.69% $0.00 16K Feb 7, 2025 Direct
transaction BIIB Common Stock Tax liability -$452K -3.2K -20% $141.35 12.8K Feb 7, 2025 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 Award $0 +46.4K $0.00 46.4K Feb 6, 2025 Common Stock 46.4K $0.00 Direct F1
transaction BIIB Restricted Stock Unit Options Exercise $0 -9.01K -33.33% $0.00 18K Feb 7, 2025 Common Stock 9.01K $0.00 Direct F2
* 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 equal yearly installments beginning on the first anniversary of the grant date of February 6, 2025.
F2 The restricted stock units vest in three (3) equal annual installments, commencing one year after the grant date of 02/07/2024.