BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Mariner, LLC's Holding History (CIK: 0001373442)

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

Q4 2025

Shares 52,475 Value ($000) $9,238 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 47,514 Value ($000) $6,656 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 35,915 Value ($000) $4,511 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 24,005 Value ($000) $3,285 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 18,966 Value ($000) $2,900 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 19,967 Value ($000) $3,871 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 23,114 Value ($000) $5,358 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 21,076 Value ($000) $4,545 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 21,529 Value ($000) $5,571 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 19,661 Value ($000) $5,053 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 19,943 Value ($000) $5,680 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 18,022 Value ($000) $5 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 19,913 Value ($000) $6 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 19,388 Value ($000) $5,176 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 14,717 Value ($000) $3,001 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 14,472 Value ($000) $3,048 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 12,837 Value ($000) $3,080 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 13,533 Value ($000) $3,830 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 11,459 Value ($000) $3,968 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 11,911 Value ($000) $3,332 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 11,012 Value ($000) $2,696 Avg Close $259.08 Range $223.25 - $363.92

Q2 2019

Shares 12,597 Value ($000) $2,946 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 11,728 Value ($000) $2,772 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 11,384 Value ($000) $3,426 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 3,141 Value ($000) $1,110 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 2,643 Value ($000) $767 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 1,006 Value ($000) $275 Avg Close $310.41 Range $259.76 - $370.57

Q2 2015

Shares 721 Value ($000) $291 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 824 Value ($000) $348 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 1,215 Value ($000) $412 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 1,105 Value ($000) $366 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 918 Value ($000) $289 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 946 Value ($000) $289 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 904 Value ($000) $253 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	52,475	$9,238	$163.37	$138.00 - $185.17
Q3 2025	47,514	$6,656	$135.17	$121.05 - $150.28
Q2 2025	35,915	$4,511	$124.60	$110.04 - $137.32
Q1 2025	24,005	$3,285	$142.96	$128.51 - $157.09
Q4 2024	18,966	$2,900	$168.67	$145.07 - $195.00
Q3 2024	19,967	$3,871	$209.21	$188.78 - $238.00
Q2 2024	23,114	$5,358	$217.32	$189.44 - $237.54
Q1 2024	21,076	$4,545	$234.20	$211.02 - $268.30
Q4 2023	21,529	$5,571	$245.62	$220.86 - $269.43
Q3 2023	19,661	$5,053	$267.47	$251.85 - $287.60
Q2 2023	19,943	$5,680	$297.86	$273.39 - $319.76
Q1 2023	18,022	$5	$276.70	$254.80 - $295.90
Q4 2022	19,913	$6	$282.44	$250.31 - $311.88
Q3 2022	19,388	$5,176	$212.38	$193.65 - $283.44
Q2 2022	14,717	$3,001	$204.43	$187.16 - $225.50
Q1 2022	14,472	$3,048	$217.46	$192.67 - $249.00
Q4 2021	12,837	$3,080	$257.12	$221.72 - $290.76
Q3 2021	13,533	$3,830	$327.75	$282.64 - $372.12
Q2 2021	11,459	$3,968	$302.94	$257.03 - $468.55
Q1 2021	11,911	$3,332	$269.69	$238.40 - $296.38
Q4 2020	11,012	$2,696	$259.08	$223.25 - $363.92
Q2 2019	12,597	$2,946	$230.90	$219.20 - $245.35
Q1 2019	11,728	$2,772	$314.89	$216.12 - $344.00
Q4 2018	11,384	$3,426	$319.14	$278.46 - $358.41
Q3 2018	3,141	$1,110	$344.30	$288.13 - $388.67
Q2 2018	2,643	$767	$281.15	$249.17 - $310.91
Q1 2018	1,006	$275	$310.41	$259.76 - $370.57
Q2 2015	721	$291	$401.33	$368.88 - $432.88
Q1 2015	824	$348	$394.14	$334.40 - $480.18
Q4 2014	1,215	$412	$323.51	$290.85 - $361.93
Q3 2014	1,105	$366	$329.72	$298.31 - $349.00
Q2 2014	918	$289	$300.97	$272.02 - $322.25
Q1 2014	946	$289	$317.43	$270.62 - $358.89
Q4 2013	904	$253	$258.65	$221.07 - $298.82