BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Clearstead Trust, LLC's Holding History (CIK: 0001708001)

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

Q4 2025
Shares 50 Value ($000) $9 Avg Close $163.37 Range $138.00 - $185.17
Q3 2025
Shares 41 Value ($000) $6 Avg Close $135.17 Range $121.05 - $150.28
Q2 2025
Shares 82 Value ($000) $10 Avg Close $124.60 Range $110.04 - $137.32
Q1 2025
Shares 27 Value ($000) $4 Avg Close $142.96 Range $128.51 - $157.09
Q4 2017
Shares 417 Value ($000) $133 Avg Close $320.80 Range $301.81 - $348.84
Q3 2017
Shares 420 Value ($000) $132 Avg Close $296.11 Range $269.50 - $330.00
Q2 2017
Shares 420 Value ($000) $114 Avg Close $264.42 Range $244.28 - $291.90