BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CHESAPEAKE ASSET MANAGEMENT LLC's Holding History (CIK: 0001079397)

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

Q2 2024

Shares 50 Value ($000) $12 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 50 Value ($000) $11 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 50 Value ($000) $13 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 50 Value ($000) $13 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 50 Value ($000) $14 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 50 Value ($000) $14 Avg Close $276.70 Range $254.80 - $295.90

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2024	50	$12	$217.32	$189.44 - $237.54
Q1 2024	50	$11	$234.20	$211.02 - $268.30
Q4 2023	50	$13	$245.62	$220.86 - $269.43
Q3 2023	50	$13	$267.47	$251.85 - $287.60
Q2 2023	50	$14	$297.86	$273.39 - $319.76
Q1 2023	50	$14	$276.70	$254.80 - $295.90