Susan Alexander - Feb 12, 2022 Form 4 Insider Report for BIOGEN INC. (BIIB)

Role
EVP Chief Legal Off & Corp Sec
Signature
/s/ Wendell Taylor, attorney-in-fact for Susan Alexander
Stock symbol
BIIB
Transactions as of
Feb 12, 2022
Transactions value $
-$441,197
Form type
4
Date filed
2/15/2022, 03:17 PM
Previous filing
Feb 14, 2022
Next filing
Feb 23, 2022

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BIIB Common Stock Options Exercise $0 +1.15K +2.63% $0.00 45K Feb 12, 2022 Direct
transaction BIIB Common Stock Tax liability -$110K -512 -1.14% $214.59 44.5K Feb 12, 2022 Direct
transaction BIIB Common Stock Options Exercise $0 +1.13K +2.53% $0.00 45.6K Feb 12, 2022 Direct
transaction BIIB Common Stock Tax liability -$107K -500 -1.1% $214.59 45.1K Feb 12, 2022 Direct
transaction BIIB Common Stock Tax liability -$224K -1.04K -2.31% $214.59 44.1K Feb 12, 2022 Direct F1

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 -1.15K -34.51% $0.00 2.19K Feb 12, 2022 Common Stock 1.15K $0.00 Direct F2
transaction BIIB Restricted Stock Unit Other $0 -2.19K -100% $0.00* 0 Feb 12, 2022 Common Stock 2.19K $0.00 Direct F2, F3
transaction BIIB Restricted Stock Unit Options Exercise $0 -1.13K -17.5% $0.00 5.31K Feb 12, 2022 Common Stock 1.13K $0.00 Direct F2
transaction BIIB Restricted Stock Unit Other $0 -2.09K -39.37% $0.00 3.22K Feb 12, 2022 Common Stock 2.09K $0.00 Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents shares withheld to satisfy the withholding tax liability due upon vesting of shares, as previously disclosed by reporting person on January 21, 2022.
F2 The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout. One-third of these RSUs are eligible to vest on each of the first three anniversaries of the grant date. The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price following and including the grant date]).
F3 This represents the difference between the maximum possible number of shares that were eligible for vesting and the actual number that vested.