BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

JENNISON ASSOCIATES LLC's Holding History (CIK: 0000053417)

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

Q1 2023

Shares 61,787 Value ($000) $17,179 Avg Close $276.70 Range $254.80 - $295.90

Q1 2021

Shares 65,838 Value ($000) $18,418 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 33,756 Value ($000) $8,265 Avg Close $259.08 Range $223.25 - $363.92

Q1 2020

Shares 91,368 Value ($000) $28,907 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 2,071 Value ($000) $615 Avg Close $277.46 Range $219.70 - $318.00

Q2 2019

Shares 3,232 Value ($000) $756 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 3,332 Value ($000) $788 Avg Close $314.89 Range $216.12 - $344.00

Q1 2018

Shares 230,771 Value ($000) $63,190 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 125,241 Value ($000) $39,898 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 97,414 Value ($000) $30,502 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 123,698 Value ($000) $33,567 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 133,913 Value ($000) $36,614 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 142,286 Value ($000) $40,349 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 2,614,383 Value ($000) $818,380 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 2,005,263 Value ($000) $484,913 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 3,465,274 Value ($000) $902,080 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 3,383,225 Value ($000) $1,036,451 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 4,061,683 Value ($000) $1,185,240 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 4,848,097 Value ($000) $1,958,340 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 5,095,601 Value ($000) $2,151,567 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 5,619,663 Value ($000) $1,907,595 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 5,807,685 Value ($000) $1,921,240 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 6,280,884 Value ($000) $1,980,426 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 6,337,153 Value ($000) $1,938,345 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 6,505,831 Value ($000) $1,820,006 Avg Close $258.65 Range $221.07 - $298.82

Q3 2013

Shares 6,387,949 Value ($000) $1,537,963 Avg Close $223.81 Range $203.55 - $248.95

Q2 2013

Shares 6,388,021 Value ($000) $1,374,702 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2023	61,787	$17,179	$276.70	$254.80 - $295.90
Q1 2021	65,838	$18,418	$269.69	$238.40 - $296.38
Q4 2020	33,756	$8,265	$259.08	$223.25 - $363.92
Q1 2020	91,368	$28,907	$303.47	$262.25 - $374.99
Q4 2019	2,071	$615	$277.46	$219.70 - $318.00
Q2 2019	3,232	$756	$230.90	$219.20 - $245.35
Q1 2019	3,332	$788	$314.89	$216.12 - $344.00
Q1 2018	230,771	$63,190	$310.41	$259.76 - $370.57
Q4 2017	125,241	$39,898	$320.80	$301.81 - $348.84
Q3 2017	97,414	$30,502	$296.11	$269.50 - $330.00
Q2 2017	123,698	$33,567	$264.42	$244.28 - $291.90
Q1 2017	133,913	$36,614	$282.75	$260.50 - $301.42
Q4 2016	142,286	$40,349	$296.43	$268.00 - $329.83
Q3 2016	2,614,383	$818,380	$296.18	$240.07 - $333.65
Q2 2016	2,005,263	$484,913	$263.54	$223.02 - $292.69
Q1 2016	3,465,274	$902,080	$264.15	$242.07 - $301.02
Q4 2015	3,383,225	$1,036,451	$287.35	$254.00 - $311.65
Q3 2015	4,061,683	$1,185,240	$330.23	$265.00 - $412.24
Q2 2015	4,848,097	$1,958,340	$401.33	$368.88 - $432.88
Q1 2015	5,095,601	$2,151,567	$394.14	$334.40 - $480.18
Q4 2014	5,619,663	$1,907,595	$323.51	$290.85 - $361.93
Q3 2014	5,807,685	$1,921,240	$329.72	$298.31 - $349.00
Q2 2014	6,280,884	$1,980,426	$300.97	$272.02 - $322.25
Q1 2014	6,337,153	$1,938,345	$317.43	$270.62 - $358.89
Q4 2013	6,505,831	$1,820,006	$258.65	$221.07 - $298.82
Q3 2013	6,387,949	$1,537,963	$223.81	$203.55 - $248.95
Q2 2013	6,388,021	$1,374,702	$213.68	$191.80 - $242.64