BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

PICTON MAHONEY ASSET MANAGEMENT's Holding History (CIK: 0001539041)

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

Q2 2023

Shares 18,202 Value ($000) $5 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 17,243 Value ($000) $5 Avg Close $276.70 Range $254.80 - $295.90

Q2 2015

Shares 77,600 Value ($000) $31,345 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 29,800 Value ($000) $12,582 Avg Close $394.14 Range $334.40 - $480.18

Q2 2014

Shares 4,800 Value ($000) $1,513 Avg Close $300.97 Range $272.02 - $322.25

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2023	18,202	$5	$297.86	$273.39 - $319.76
Q1 2023	17,243	$5	$276.70	$254.80 - $295.90
Q2 2015	77,600	$31,345	$401.33	$368.88 - $432.88
Q1 2015	29,800	$12,582	$394.14	$334.40 - $480.18
Q2 2014	4,800	$1,513	$300.97	$272.02 - $322.25