BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Saratoga Research & Investment Management's Holding History (CIK: 0001477872)

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

Q4 2024

Shares 1,448 Value ($000) $221 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 150,720 Value ($000) $29,215 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 157,791 Value ($000) $36,579 Avg Close $217.32 Range $189.44 - $237.54

Q1 2024

Shares 162,851 Value ($000) $35,115 Avg Close $234.20 Range $211.02 - $268.30

Q4 2023

Shares 164,226 Value ($000) $42,497 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 176,064 Value ($000) $45,250 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 179,043 Value ($000) $51,000 Avg Close $297.86 Range $273.39 - $319.76

Q1 2023

Shares 183,329 Value ($000) $50,971 Avg Close $276.70 Range $254.80 - $295.90

Q4 2022

Shares 184,049 Value ($000) $50,967 Avg Close $282.44 Range $250.31 - $311.88

Q3 2022

Shares 231,405 Value ($000) $61,785 Avg Close $212.38 Range $193.65 - $283.44

Q2 2022

Shares 232,470 Value ($000) $47,410 Avg Close $204.43 Range $187.16 - $225.50

Q1 2022

Shares 240,448 Value ($000) $50,638 Avg Close $217.46 Range $192.67 - $249.00

Q4 2021

Shares 235,191 Value ($000) $56,427 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 240,324 Value ($000) $68,009 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 241,053 Value ($000) $83,469 Avg Close $302.94 Range $257.03 - $468.55

Q1 2021

Shares 254,181 Value ($000) $71,107 Avg Close $269.69 Range $238.40 - $296.38

Q4 2020

Shares 246,700 Value ($000) $60,407 Avg Close $259.08 Range $223.25 - $363.92

Q3 2020

Shares 239,075 Value ($000) $67,821 Avg Close $278.91 Range $261.87 - $312.00

Q2 2020

Shares 243,096 Value ($000) $65,040 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 245,938 Value ($000) $77,810 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 243,419 Value ($000) $72,230 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 242,145 Value ($000) $56,376 Avg Close $232.85 Range $215.78 - $246.99

Q2 2019

Shares 239,987 Value ($000) $56,126 Avg Close $230.90 Range $219.20 - $245.35

Q1 2019

Shares 160,680 Value ($000) $37,982 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 145,906 Value ($000) $43,906 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 154,727 Value ($000) $54,667 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 159,973 Value ($000) $46,431 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 160,198 Value ($000) $43,865 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 145,759 Value ($000) $46,434 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 141,509 Value ($000) $44,309 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 137,562 Value ($000) $37,329 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 126,222 Value ($000) $34,512 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 120,326 Value ($000) $34,122 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 122,572 Value ($000) $38,369 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 119,335 Value ($000) $28,858 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 92,309 Value ($000) $24,030 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 791 Value ($000) $242 Avg Close $287.35 Range $254.00 - $311.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2024	1,448	$221	$168.67	$145.07 - $195.00
Q3 2024	150,720	$29,215	$209.21	$188.78 - $238.00
Q2 2024	157,791	$36,579	$217.32	$189.44 - $237.54
Q1 2024	162,851	$35,115	$234.20	$211.02 - $268.30
Q4 2023	164,226	$42,497	$245.62	$220.86 - $269.43
Q3 2023	176,064	$45,250	$267.47	$251.85 - $287.60
Q2 2023	179,043	$51,000	$297.86	$273.39 - $319.76
Q1 2023	183,329	$50,971	$276.70	$254.80 - $295.90
Q4 2022	184,049	$50,967	$282.44	$250.31 - $311.88
Q3 2022	231,405	$61,785	$212.38	$193.65 - $283.44
Q2 2022	232,470	$47,410	$204.43	$187.16 - $225.50
Q1 2022	240,448	$50,638	$217.46	$192.67 - $249.00
Q4 2021	235,191	$56,427	$257.12	$221.72 - $290.76
Q3 2021	240,324	$68,009	$327.75	$282.64 - $372.12
Q2 2021	241,053	$83,469	$302.94	$257.03 - $468.55
Q1 2021	254,181	$71,107	$269.69	$238.40 - $296.38
Q4 2020	246,700	$60,407	$259.08	$223.25 - $363.92
Q3 2020	239,075	$67,821	$278.91	$261.87 - $312.00
Q2 2020	243,096	$65,040	$300.59	$257.60 - $350.24
Q1 2020	245,938	$77,810	$303.47	$262.25 - $374.99
Q4 2019	243,419	$72,230	$277.46	$219.70 - $318.00
Q3 2019	242,145	$56,376	$232.85	$215.78 - $246.99
Q2 2019	239,987	$56,126	$230.90	$219.20 - $245.35
Q1 2019	160,680	$37,982	$314.89	$216.12 - $344.00
Q4 2018	145,906	$43,906	$319.14	$278.46 - $358.41
Q3 2018	154,727	$54,667	$344.30	$288.13 - $388.67
Q2 2018	159,973	$46,431	$281.15	$249.17 - $310.91
Q1 2018	160,198	$43,865	$310.41	$259.76 - $370.57
Q4 2017	145,759	$46,434	$320.80	$301.81 - $348.84
Q3 2017	141,509	$44,309	$296.11	$269.50 - $330.00
Q2 2017	137,562	$37,329	$264.42	$244.28 - $291.90
Q1 2017	126,222	$34,512	$282.75	$260.50 - $301.42
Q4 2016	120,326	$34,122	$296.43	$268.00 - $329.83
Q3 2016	122,572	$38,369	$296.18	$240.07 - $333.65
Q2 2016	119,335	$28,858	$263.54	$223.02 - $292.69
Q1 2016	92,309	$24,030	$264.15	$242.07 - $301.02
Q4 2015	791	$242	$287.35	$254.00 - $311.65