BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Parkman Healthcare Partners LLC's Holding History (CIK: 0001777015)

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

Q4 2025

Shares 35,425 Value ($000) $6,234 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 130,165 Value ($000) $18,234 Avg Close $135.17 Range $121.05 - $150.28

Q1 2023

Shares 17,920 Value ($000) $4,982 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 15,217 Value ($000) $4,214 Avg Close $282.44 Range $250.31 - $311.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	35,425	$6,234	$163.37	$138.00 - $185.17
Q3 2025	130,165	$18,234	$135.17	$121.05 - $150.28
Q1 2023	17,920	$4,982	$276.70	$254.80 - $295.90
Q4 2022	15,217	$4,214	$282.44	$250.31 - $311.88