BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

State of Tennessee, Department of Treasury's Holding History (CIK: 0001587973)

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

Q4 2025

Shares 71,467 Value ($000) $12,856 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 85,463 Value ($000) $11,972 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 36,544 Value ($000) $4,590 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 44,497 Value ($000) $6,089 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 18,302 Value ($000) $2,799 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 19,329 Value ($000) $3,747 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 61,199 Value ($000) $14,187 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 40,368 Value ($000) $8,705 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 63,396 Value ($000) $16,405 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 37,046 Value ($000) $9,521 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 37,757 Value ($000) $10,755 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 43,148 Value ($000) $11,996 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 36,184 Value ($000) $10 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 37,942 Value ($000) $10 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 37,942 Value ($000) $7,738 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 24,280 Value ($000) $5,113 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 25,054 Value ($000) $6,011 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 116,739 Value ($000) $33,036 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 26,817 Value ($000) $9,286 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 27,088 Value ($000) $7,578 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 27,617 Value ($000) $6,762 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 31,968 Value ($000) $9,069 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 33,553 Value ($000) $8,977 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 57,798 Value ($000) $18,286 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 66,562 Value ($000) $19,751 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 45,776 Value ($000) $10,658 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 59,321 Value ($000) $13,873 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 67,986 Value ($000) $16,071 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 70,977 Value ($000) $21,359 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 72,420 Value ($000) $25,587 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 83,719 Value ($000) $24,299 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 93,388 Value ($000) $25,572 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 154,764 Value ($000) $49,304 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 148,778 Value ($000) $46,585 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 188,984 Value ($000) $51,283 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 203,151 Value ($000) $55,546 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 206,256 Value ($000) $58,490 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 250,572 Value ($000) $78,437 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 344,122 Value ($000) $83,216 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 226,836 Value ($000) $59,049 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 383,602 Value ($000) $117,516 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 123,190 Value ($000) $35,948 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 107,000 Value ($000) $43,222 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 236,639 Value ($000) $99,919 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 260,586 Value ($000) $88,456 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 96,878 Value ($000) $32,049 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 96,678 Value ($000) $30,484 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 212,797 Value ($000) $65,088 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 40,400 Value ($000) $11,295 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 207,059 Value ($000) $49,852 Avg Close $223.81 Range $203.55 - $248.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	71,467	$12,856	$163.37	$138.00 - $185.17
Q3 2025	85,463	$11,972	$135.17	$121.05 - $150.28
Q2 2025	36,544	$4,590	$124.60	$110.04 - $137.32
Q1 2025	44,497	$6,089	$142.96	$128.51 - $157.09
Q4 2024	18,302	$2,799	$168.67	$145.07 - $195.00
Q3 2024	19,329	$3,747	$209.21	$188.78 - $238.00
Q2 2024	61,199	$14,187	$217.32	$189.44 - $237.54
Q1 2024	40,368	$8,705	$234.20	$211.02 - $268.30
Q4 2023	63,396	$16,405	$245.62	$220.86 - $269.43
Q3 2023	37,046	$9,521	$267.47	$251.85 - $287.60
Q2 2023	37,757	$10,755	$297.86	$273.39 - $319.76
Q1 2023	43,148	$11,996	$276.70	$254.80 - $295.90
Q4 2022	36,184	$10	$282.44	$250.31 - $311.88
Q3 2022	37,942	$10	$212.38	$193.65 - $283.44
Q2 2022	37,942	$7,738	$204.43	$187.16 - $225.50
Q1 2022	24,280	$5,113	$217.46	$192.67 - $249.00
Q4 2021	25,054	$6,011	$257.12	$221.72 - $290.76
Q3 2021	116,739	$33,036	$327.75	$282.64 - $372.12
Q2 2021	26,817	$9,286	$302.94	$257.03 - $468.55
Q1 2021	27,088	$7,578	$269.69	$238.40 - $296.38
Q4 2020	27,617	$6,762	$259.08	$223.25 - $363.92
Q3 2020	31,968	$9,069	$278.91	$261.87 - $312.00
Q2 2020	33,553	$8,977	$300.59	$257.60 - $350.24
Q1 2020	57,798	$18,286	$303.47	$262.25 - $374.99
Q4 2019	66,562	$19,751	$277.46	$219.70 - $318.00
Q3 2019	45,776	$10,658	$232.85	$215.78 - $246.99
Q2 2019	59,321	$13,873	$230.90	$219.20 - $245.35
Q1 2019	67,986	$16,071	$314.89	$216.12 - $344.00
Q4 2018	70,977	$21,359	$319.14	$278.46 - $358.41
Q3 2018	72,420	$25,587	$344.30	$288.13 - $388.67
Q2 2018	83,719	$24,299	$281.15	$249.17 - $310.91
Q1 2018	93,388	$25,572	$310.41	$259.76 - $370.57
Q4 2017	154,764	$49,304	$320.80	$301.81 - $348.84
Q3 2017	148,778	$46,585	$296.11	$269.50 - $330.00
Q2 2017	188,984	$51,283	$264.42	$244.28 - $291.90
Q1 2017	203,151	$55,546	$282.75	$260.50 - $301.42
Q4 2016	206,256	$58,490	$296.43	$268.00 - $329.83
Q3 2016	250,572	$78,437	$296.18	$240.07 - $333.65
Q2 2016	344,122	$83,216	$263.54	$223.02 - $292.69
Q1 2016	226,836	$59,049	$264.15	$242.07 - $301.02
Q4 2015	383,602	$117,516	$287.35	$254.00 - $311.65
Q3 2015	123,190	$35,948	$330.23	$265.00 - $412.24
Q2 2015	107,000	$43,222	$401.33	$368.88 - $432.88
Q1 2015	236,639	$99,919	$394.14	$334.40 - $480.18
Q4 2014	260,586	$88,456	$323.51	$290.85 - $361.93
Q3 2014	96,878	$32,049	$329.72	$298.31 - $349.00
Q2 2014	96,678	$30,484	$300.97	$272.02 - $322.25
Q1 2014	212,797	$65,088	$317.43	$270.62 - $358.89
Q4 2013	40,400	$11,295	$258.65	$221.07 - $298.82
Q3 2013	207,059	$49,852	$223.81	$203.55 - $248.95