BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Employees Provident Fund Board's Holding History (CIK: 0001600177)

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

Q4 2025

Shares 704,196 Value ($000) $123,931 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 704,196 Value ($000) $98,644 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 704,196 Value ($000) $88,440 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 704,196 Value ($000) $96,362 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 704,196 Value ($000) $107,686 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 678,080 Value ($000) $131,439 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 678,080 Value ($000) $157,193 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 678,080 Value ($000) $146,214 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 564,273 Value ($000) $146,017 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 442,416 Value ($000) $113,705 Avg Close $267.47 Range $251.85 - $287.60

Q1 2023

Shares 345,000 Value ($000) $95,920 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 345,000 Value ($000) $95,537 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 392,680 Value ($000) $104,846 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 392,680 Value ($000) $80,083 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 355,318 Value ($000) $74,830 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 212,569 Value ($000) $51,000 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 212,569 Value ($000) $60,155 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 212,569 Value ($000) $73,606 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 202,069 Value ($000) $56,529 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 202,069 Value ($000) $49,479 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 163,360 Value ($000) $46,342 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 287,500 Value ($000) $81,894 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 31,886 Value ($000) $10,088 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 50,000 Value ($000) $14,837 Avg Close $277.46 Range $219.70 - $318.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	704,196	$123,931	$163.37	$138.00 - $185.17
Q3 2025	704,196	$98,644	$135.17	$121.05 - $150.28
Q2 2025	704,196	$88,440	$124.60	$110.04 - $137.32
Q1 2025	704,196	$96,362	$142.96	$128.51 - $157.09
Q4 2024	704,196	$107,686	$168.67	$145.07 - $195.00
Q3 2024	678,080	$131,439	$209.21	$188.78 - $238.00
Q2 2024	678,080	$157,193	$217.32	$189.44 - $237.54
Q1 2024	678,080	$146,214	$234.20	$211.02 - $268.30
Q4 2023	564,273	$146,017	$245.62	$220.86 - $269.43
Q3 2023	442,416	$113,705	$267.47	$251.85 - $287.60
Q1 2023	345,000	$95,920	$276.70	$254.80 - $295.90
Q4 2022	345,000	$95,537	$282.44	$250.31 - $311.88
Q3 2022	392,680	$104,846	$212.38	$193.65 - $283.44
Q2 2022	392,680	$80,083	$204.43	$187.16 - $225.50
Q1 2022	355,318	$74,830	$217.46	$192.67 - $249.00
Q4 2021	212,569	$51,000	$257.12	$221.72 - $290.76
Q3 2021	212,569	$60,155	$327.75	$282.64 - $372.12
Q2 2021	212,569	$73,606	$302.94	$257.03 - $468.55
Q1 2021	202,069	$56,529	$269.69	$238.40 - $296.38
Q4 2020	202,069	$49,479	$259.08	$223.25 - $363.92
Q3 2020	163,360	$46,342	$278.91	$261.87 - $312.00
Q2 2020	287,500	$81,894	$300.59	$257.60 - $350.24
Q1 2020	31,886	$10,088	$303.47	$262.25 - $374.99
Q4 2019	50,000	$14,837	$277.46	$219.70 - $318.00