Priya Singhal - 06 Dec 2024 Form 4 Insider Report for BIOGEN INC. (BIIB)

Signature
/s/ Samuel Ntonme, attorney-in-fact for Priya Singhal
Issuer symbol
BIIB
Transactions as of
06 Dec 2024
Net transactions value
-$49,796
Form type
4
Filing time
09 Dec 2024, 16:57:33 UTC
Previous filing
05 Sep 2024
Next filing
03 Feb 2025

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction BIIB Common Stock Options Exercise $0 +426 +8% $0.000000 5,742 06 Dec 2024 Direct
transaction BIIB Common Stock Tax liability $32,503 -206 -3.6% $157.78 5,536 06 Dec 2024 Direct
transaction BIIB Common Stock Sale $17,293 -110 -2% $157.21 5,426 09 Dec 2024 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 -426 -100% $0.000000 0 06 Dec 2024 Common Stock 426 $0.000000 Direct F1, F2
* 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 December 8, 2021 and will vest in three equal installments on each anniversary of the grant date.
F2 This award was granted to the reporting person on February 1, 2023 and will vest in three equal installments on each anniversary of the grant date.