BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Ground Swell Capital, LLC's Holding History (CIK: 0001534450)

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

Q1 2023

Shares 991 Value ($000) $276 Avg Close $276.70 Range $254.80 - $295.90

Q2 2022

Shares 1,754 Value ($000) $358 Avg Close $204.43 Range $187.16 - $225.50

Q3 2014

Shares 399 Value ($000) $132 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 264 Value ($000) $83 Avg Close $300.97 Range $272.02 - $322.25

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	991	$276	$276.70	$254.80 - $295.90
Q2 2022	1,754	$358	$204.43	$187.16 - $225.50
Q3 2014	399	$132	$329.72	$298.31 - $349.00
Q2 2014	264	$83	$300.97	$272.02 - $322.25