BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Procyon Advisors, LLC's Holding History (CIK: 0001804329)

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

Q4 2025

Shares 1,397 Value ($000) $246 Avg Close $163.37 Range $138.00 - $185.17

Q2 2020

Shares 13 Value ($000) $3 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 13 Value ($000) $4 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 24 Value ($000) $7 Avg Close $277.46 Range $219.70 - $318.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,397	$246	$163.37	$138.00 - $185.17
Q2 2020	13	$3	$300.59	$257.60 - $350.24
Q1 2020	13	$4	$303.47	$262.25 - $374.99
Q4 2019	24	$7	$277.46	$219.70 - $318.00