BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

CAUSEWAY CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001165797)

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

Q4 2025

Shares 521,101 Value ($000) $91,709 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 567,518 Value ($000) $79,498 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 493,355 Value ($000) $61,960 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 433,517 Value ($000) $59,322 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 281,702 Value ($000) $43,078 Avg Close $168.67 Range $145.07 - $195.00

Q3 2016

Shares 404,444 Value ($000) $142,206 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 489,263 Value ($000) $135,200 Avg Close $263.54 Range $223.02 - $292.69

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	521,101	$91,709	$163.37	$138.00 - $185.17
Q3 2025	567,518	$79,498	$135.17	$121.05 - $150.28
Q2 2025	493,355	$61,960	$124.60	$110.04 - $137.32
Q1 2025	433,517	$59,322	$142.96	$128.51 - $157.09
Q4 2024	281,702	$43,078	$168.67	$145.07 - $195.00
Q3 2016	404,444	$142,206	$296.18	$240.07 - $333.65
Q2 2016	489,263	$135,200	$263.54	$223.02 - $292.69