BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Hendershot Investments Inc.'s Holding History (CIK: 0001541496)

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

Q2 2021

Shares 7,721 Value ($000) $2,674 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 8,251 Value ($000) $2,308 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 8,316 Value ($000) $2,036 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 15,888 Value ($000) $4,507 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 16,116 Value ($000) $4,312 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 16,485 Value ($000) $5,216 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 16,510 Value ($000) $4,899 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 17,010 Value ($000) $3,960 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 17,232 Value ($000) $4,030 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 17,967 Value ($000) $4,247 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 17,743 Value ($000) $5,339 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 17,652 Value ($000) $6,237 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 17,764 Value ($000) $5,156 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 16,892 Value ($000) $4,625 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 16,222 Value ($000) $5,168 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 16,177 Value ($000) $5,065 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 16,261 Value ($000) $4,413 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 17,191 Value ($000) $4,700 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 17,045 Value ($000) $4,834 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 17,165 Value ($000) $5,373 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 16,716 Value ($000) $4,042 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 15,852 Value ($000) $4,127 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 14,624 Value ($000) $4,480 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 7,924 Value ($000) $2,312 Avg Close $330.23 Range $265.00 - $412.24

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	7,721	$2,674	$302.94	$257.03 - $468.55
Q1 2021	8,251	$2,308	$269.69	$238.40 - $296.38
Q4 2020	8,316	$2,036	$259.08	$223.25 - $363.92
Q3 2020	15,888	$4,507	$278.91	$261.87 - $312.00
Q2 2020	16,116	$4,312	$300.59	$257.60 - $350.24
Q1 2020	16,485	$5,216	$303.47	$262.25 - $374.99
Q4 2019	16,510	$4,899	$277.46	$219.70 - $318.00
Q3 2019	17,010	$3,960	$232.85	$215.78 - $246.99
Q2 2019	17,232	$4,030	$230.90	$219.20 - $245.35
Q1 2019	17,967	$4,247	$314.89	$216.12 - $344.00
Q4 2018	17,743	$5,339	$319.14	$278.46 - $358.41
Q3 2018	17,652	$6,237	$344.30	$288.13 - $388.67
Q2 2018	17,764	$5,156	$281.15	$249.17 - $310.91
Q1 2018	16,892	$4,625	$310.41	$259.76 - $370.57
Q4 2017	16,222	$5,168	$320.80	$301.81 - $348.84
Q3 2017	16,177	$5,065	$296.11	$269.50 - $330.00
Q2 2017	16,261	$4,413	$264.42	$244.28 - $291.90
Q1 2017	17,191	$4,700	$282.75	$260.50 - $301.42
Q4 2016	17,045	$4,834	$296.43	$268.00 - $329.83
Q3 2016	17,165	$5,373	$296.18	$240.07 - $333.65
Q2 2016	16,716	$4,042	$263.54	$223.02 - $292.69
Q1 2016	15,852	$4,127	$264.15	$242.07 - $301.02
Q4 2015	14,624	$4,480	$287.35	$254.00 - $311.65
Q3 2015	7,924	$2,312	$330.23	$265.00 - $412.24