Key facts
- This page summarizes Adam Keeney's Form 4 filing for BIOGEN INC. (BIIB).
- 3 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 05 May 2026, 16:11.
Adam Keeney - 01 May 2026 Form 4 Insider Report for BIOGEN INC. (BIIB)
- Reporting relationship
- Head of Corporate Development
- Issuer ticker
- BIIB
- Reported as of
- 01 May 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 05 May 2026, 16:11:57 UTC
- Prior SEC filing
- 17 Feb 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Wendell Taylor, attorney-in-fact for Mr. Keeney
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Adam Keeney filed Form 4 for BIOGEN INC. (BIIB) on 05 May 2026.
Change
- Previous filing in this sequence was filed on 17 Feb 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001973607
Primary reporting owner
Keeney Adam
- Relationship
- Head of Corporate Development
- Address
- BIOGEN INC., 225 BINNEY STREET, CAMBRIDGE
- Signature
- /s/ Wendell Taylor, attorney-in-fact for Mr. Keeney
- Signature date
- 05 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
BIIB
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +939
- Change %
- +16%
- Price
- $0.000000*
- Shares after
- 6,820
- Date
- 01 May 2026
- Ownership
- Direct
BIIB
transaction
Common Stock
Tax liability
- Transaction value
- Shares
- -455
- Change %
- -6.7%
- Price
- $187.06*
- Shares after
- 6,365
- Date
- 01 May 2026
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
BIIB
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -939
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 01 May 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 939
- Exercise price
- $0.000000
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
The restricted stock units vest in three equal yearly installments beginning on the first anniversary of the grant date of May 1, 2023.