BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

NorthRock Partners, LLC's Holding History (CIK: 0001632097)

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

Q4 2025

Shares 1,469 Value ($000) $259 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 3,596 Value ($000) $504 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 3,116 Value ($000) $391 Avg Close $124.60 Range $110.04 - $137.32

Q3 2024

Shares 1,406 Value ($000) $273 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 1,595 Value ($000) $370 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 1,035 Value ($000) $223 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 1,050 Value ($000) $272 Avg Close $245.62 Range $220.86 - $269.43

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,469	$259	$163.37	$138.00 - $185.17
Q3 2025	3,596	$504	$135.17	$121.05 - $150.28
Q2 2025	3,116	$391	$124.60	$110.04 - $137.32
Q3 2024	1,406	$273	$209.21	$188.78 - $238.00
Q2 2024	1,595	$370	$217.32	$189.44 - $237.54
Q1 2024	1,035	$223	$234.20	$211.02 - $268.30
Q4 2023	1,050	$272	$245.62	$220.86 - $269.43