BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

PLATINUM INVESTMENT MANAGEMENT LTD's Holding History (CIK: 0001256071)

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

Q1 2024

Shares 2,140 Value ($000) $461 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 24,020 Value ($000) $6,216 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 24,044 Value ($000) $6,180 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 24,044 Value ($000) $6,849 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 20,511 Value ($000) $5,703 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 23,144 Value ($000) $6,409 Avg Close $282.44 Range $250.31 - $311.88

Q1 2017

Shares 4,000 Value ($000) $1,093 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 4,000 Value ($000) $1,134 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 4,000 Value ($000) $1,252 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 4,000 Value ($000) $967 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 4,000 Value ($000) $1,041 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 6,500 Value ($000) $1,991 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 6,500 Value ($000) $1,896 Avg Close $330.23 Range $265.00 - $412.24

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2024	2,140	$461	$234.20	$211.02 - $268.30
Q4 2023	24,020	$6,216	$245.62	$220.86 - $269.43
Q3 2023	24,044	$6,180	$267.47	$251.85 - $287.60
Q2 2023	24,044	$6,849	$297.86	$273.39 - $319.76
Q1 2023	20,511	$5,703	$276.70	$254.80 - $295.90
Q4 2022	23,144	$6,409	$282.44	$250.31 - $311.88
Q1 2017	4,000	$1,093	$282.75	$260.50 - $301.42
Q4 2016	4,000	$1,134	$296.43	$268.00 - $329.83
Q3 2016	4,000	$1,252	$296.18	$240.07 - $333.65
Q2 2016	4,000	$967	$263.54	$223.02 - $292.69
Q1 2016	4,000	$1,041	$264.15	$242.07 - $301.02
Q4 2015	6,500	$1,991	$287.35	$254.00 - $311.65
Q3 2015	6,500	$1,896	$330.23	$265.00 - $412.24