-
Signature
-
/s/ Wendell Taylor, attorney-in-fact for Priya Singhal
-
Issuer symbol
-
BIIB
-
Transactions as of
-
06 Feb 2026
-
Net transactions value
-
-$1,028,060
-
Form type
-
4
-
Filing time
-
10 Feb 2026, 17:05:47 UTC
Reporting Owners (1)
| Name |
Relationship |
Address |
Signature |
Signature date |
CIK |
| Singhal Priya |
Head of Development |
225 BINNEY, CAMBRIDGE |
/s/ Wendell Taylor, attorney-in-fact for Priya Singhal |
10 Feb 2026 |
0001769608 |
Transactions Table
| Type |
Sym |
Class |
Transaction |
Value $ |
Shares |
Change % |
* Price $ |
Shares After |
Date |
Ownership |
Footnotes |
| transaction |
BIIB |
Common Stock |
Options Exercise |
$0 |
+2,217 |
+35% |
$0.000000 |
8,488 |
06 Feb 2026 |
Direct |
|
| transaction |
BIIB |
Common Stock |
Tax liability |
$212,446 |
-1,056 |
-12% |
$201.18 |
7,432 |
06 Feb 2026 |
Direct |
|
| transaction |
BIIB |
Common Stock |
Options Exercise |
$0 |
+4,683 |
+63% |
$0.000000 |
12,115 |
06 Feb 2026 |
Direct |
|
| transaction |
BIIB |
Common Stock |
Tax liability |
$284,066 |
-1,412 |
-12% |
$201.18 |
10,703 |
06 Feb 2026 |
Direct |
|
| transaction |
BIIB |
Common Stock |
Sale |
$531,548 |
-2,660 |
-25% |
$199.83 |
8,043 |
09 Feb 2026 |
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 |
-2,217 |
-50% |
$0.000000 |
2,217 |
06 Feb 2026 |
Common Stock |
2,217 |
$0.000000 |
Direct |
F1 |
| transaction |
BIIB |
Restricted Stock Unit |
Options Exercise |
$0 |
-4,683 |
-33% |
$0.000000 |
9,367 |
06 Feb 2026 |
Common Stock |
4,683 |
$0.000000 |
Direct |
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: