BIIB Filing
4Filing Date: Jun 11, 2026
BIOGEN INC. (BIIB) · Insider Trading (Form 4) SEC Filing
Statement of Changes in Beneficial Ownership
descriptionView SEC Filing
ACC: 0000875045-26-000062open_in_new
Total Value$0
Trades1
Insiders1
Transaction Details
Mantas Jesus B
Director·Direct
Grant · Acquire
Common Stock
Shares+1.50K
Price$0.00
Total Value$0
Shares Owned After11.26K
Transaction DateJun 9, 2026
Footnotes ▸
The restricted stock units vest on the earlier of (i) the next annual meeting or (ii) the anniversary of the date of grant of June 9, 2026.
Post-Transaction Holdings
Mantas Jesus B
| Security | Shares | Change |
|---|---|---|
| Common Stock | 11.26K | +1.50K (15.42%) |
Original SEC Filing Textexpand_more
=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-06-09
10b5-1 Pre-arranged Plan: No
--- Issuer ---
Name: BIOGEN INC. (BIIB)
CIK: 0000875045
--- Reporting Owner ---
Name: Mantas Jesus B
CIK: 0001777331
Role: Director
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Common Stock
Date: 2026-06-09 | Code: A (Grant or award)
Shares: +1,505 | Price: $0.00
Shares Owned After: 11,263 | Ownership: D (Direct)
Footnotes:
[F1] The restricted stock units vest on the earlier of (i) the next annual meeting or (ii) the anniversary of the date of grant of June 9, 2026.
--- Footnotes (Complete Index) ---
F1: The restricted stock units vest on the earlier of (i) the next annual meeting or (ii) the anniversary of the date of grant of June 9, 2026.
--- Signature ---
/s/ /s/ Wendell Taylor, Attorney in Fact for Jesus B. Mantas (2026-06-11)