Priya Singhal - 01 Sep 2023 Form 4 Insider Report for BIOGEN INC. (BIIB)

Signature
/s/ Wendell Taylor, attorney-in-fact for Priya Singhal
Issuer symbol
BIIB
Transactions as of
01 Sep 2023
Net transactions value
-$331,731
Form type
4
Filing time
06 Sep 2023, 18:06:49 UTC
Previous filing
05 Jul 2023
Next filing
12 Dec 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BIIB Common Stock Options Exercise $0 +1,668 +57% $0.000000 4,592 01 Sep 2023 Direct
transaction BIIB Common Stock Tax liability $215,606 -807 -18% $267.17 3,785 01 Sep 2023 Direct
transaction BIIB Common Stock Sale $116,124 -431 -11% $269.43 3,354 05 Sep 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 -1,668 -33% $0.000000 3,337 01 Sep 2023 Common Stock 1,668 $0.000000 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This award was granted to the reporting person on September 1, 2022 and will vest in three equal installments on each anniversary of the grant date.