BERKSHIRE HATHAWAY INC DEL

Ticker: BRK/B CUSIP: 084670702 Class: Common Stock

New England Research & Management, Inc.'s Holding History (CIK: 0001596077)

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

Q4 2025

Shares 7,870 Value ($000) $3,956 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 7,870 Value ($000) $3,957 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 7,870 Value ($000) $4 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 7,845 Value ($000) $4 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 7,845 Value ($000) $4 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 7,845 Value ($000) $4 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 7,845 Value ($000) $3 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 7,885 Value ($000) $3 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 7,885 Value ($000) $3 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 7,970 Value ($000) $3 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 8,145 Value ($000) $3 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 8,225 Value ($000) $3 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 9,051 Value ($000) $3 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 8,666 Value ($000) $2,314 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 9,016 Value ($000) $2,462 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 8,411 Value ($000) $2,968 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 8,611 Value ($000) $2,575 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 7,611 Value ($000) $2,077 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 7,636 Value ($000) $2,122 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 7,711 Value ($000) $1,970 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 7,711 Value ($000) $1,788 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 7,711 Value ($000) $1,642 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 6,811 Value ($000) $1,216 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 6,811 Value ($000) $1,245 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 6,886 Value ($000) $1,560 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 6,911 Value ($000) $1,438 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 6,986 Value ($000) $1,489 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 7,136 Value ($000) $1,434 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 7,486 Value ($000) $1,528 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 7,936 Value ($000) $1,699 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 6,736 Value ($000) $1,257 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 5,486 Value ($000) $1,094 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 5,750 Value ($000) $1,140 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 5,750 Value ($000) $1,054 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 6,150 Value ($000) $1,042 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 6,250 Value ($000) $1,042 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 6,173 Value ($000) $1,006 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 6,173 Value ($000) $892 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 6,173 Value ($000) $894 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 6,473 Value ($000) $918 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 5,123 Value ($000) $676 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 5,123 Value ($000) $668 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 5,123 Value ($000) $697 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 5,123 Value ($000) $739 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 5,123 Value ($000) $769 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 5,323 Value ($000) $735 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 5,323 Value ($000) $674 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 5,422 Value ($000) $678 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 5,422 Value ($000) $643 Avg Close $115.63 Range $110.84 - $118.66

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	7,870	$3,956	$497.53	$473.15 - $516.85
Q3 2025	7,870	$3,957	$484.36	$455.19 - $507.66
Q2 2025	7,870	$4	$507.86	$462.10 - $542.07
Q1 2025	7,845	$4	$486.15	$440.10 - $537.63
Q4 2024	7,845	$4	$461.73	$437.90 - $491.67
Q3 2024	7,845	$4	$442.18	$403.82 - $484.82
Q2 2024	7,845	$3	$408.62	$395.66 - $424.52
Q1 2024	7,885	$3	$393.34	$355.94 - $430.00
Q4 2023	7,885	$3	$350.99	$330.58 - $364.05
Q3 2023	7,970	$3	$354.77	$338.41 - $373.34
Q2 2023	8,145	$3	$326.37	$307.07 - $342.50
Q1 2023	8,225	$3	$308.18	$292.42 - $321.32
Q4 2022	9,051	$3	$296.98	$259.85 - $319.56
Q3 2022	8,666	$2,314	$284.56	$261.55 - $308.15
Q2 2022	9,016	$2,462	$313.72	$263.68 - $354.58
Q1 2022	8,411	$2,968	$323.46	$294.81 - $362.10
Q4 2021	8,611	$2,575	$286.41	$272.22 - $301.65
Q3 2021	7,611	$2,077	$280.86	$270.73 - $291.82
Q2 2021	7,636	$2,122	$279.44	$254.80 - $295.08
Q1 2021	7,711	$1,970	$242.84	$226.10 - $267.50
Q4 2020	7,711	$1,788	$220.20	$197.81 - $234.99
Q3 2020	7,711	$1,642	$204.56	$177.34 - $223.24
Q2 2020	6,811	$1,216	$182.62	$167.04 - $203.33
Q1 2020	6,811	$1,245	$212.55	$159.50 - $231.61
Q4 2019	6,886	$1,560	$217.17	$201.33 - $228.23
Q3 2019	6,911	$1,438	$206.04	$195.40 - $216.58
Q2 2019	6,986	$1,489	$206.92	$196.89 - $219.16
Q1 2019	7,136	$1,434	$201.85	$191.04 - $209.40
Q4 2018	7,486	$1,528	$208.87	$186.10 - $224.07
Q3 2018	7,936	$1,699	$205.18	$185.72 - $223.00
Q2 2018	6,736	$1,257	$194.92	$184.75 - $202.77
Q1 2018	5,486	$1,094	$205.34	$189.30 - $217.62
Q4 2017	5,750	$1,140	$189.88	$180.44 - $200.50
Q3 2017	5,750	$1,054	$176.72	$168.00 - $184.00
Q2 2017	6,150	$1,042	$166.33	$160.93 - $171.95
Q1 2017	6,250	$1,042	$167.31	$158.61 - $177.86
Q4 2016	6,173	$1,006	$153.96	$141.92 - $167.25
Q3 2016	6,173	$892	$146.25	$140.95 - $151.05
Q2 2016	6,173	$894	$142.96	$136.65 - $148.03
Q1 2016	6,473	$918	$132.58	$123.55 - $143.40
Q4 2015	5,123	$676	$134.20	$127.46 - $138.62
Q3 2015	5,123	$668	$137.00	$125.50 - $144.69
Q2 2015	5,123	$697	$142.63	$136.08 - $148.57
Q1 2015	5,123	$739	$147.14	$142.50 - $151.69
Q4 2014	5,123	$769	$144.37	$132.03 - $152.94
Q3 2014	5,323	$735	$133.21	$122.72 - $142.45
Q2 2014	5,323	$674	$126.57	$121.09 - $129.73
Q1 2014	5,422	$678	$116.85	$108.12 - $125.91
Q4 2013	5,422	$643	$115.63	$110.84 - $118.66