BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 84,990 Value ($000) $14,957 Avg Close $163.37 Range $138.00 - $185.17