BERKSHIRE HATHAWAY INC DEL

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

Choate Investment Advisors's Holding History (CIK: 0001399794)

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

Q4 2025

Shares 66,898 Value ($000) $33,626 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 70,332 Value ($000) $35,359 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 66,841 Value ($000) $32,469 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 68,235 Value ($000) $36,341 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 69,681 Value ($000) $29,591 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 67,287 Value ($000) $30,970 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 67,098 Value ($000) $27,295 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 67,907 Value ($000) $28,556 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 66,849 Value ($000) $23,842 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 62,510 Value ($000) $21,897 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 59,496 Value ($000) $20,288 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 58,169 Value ($000) $17,961 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 58,463 Value ($000) $18,059 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 56,332 Value ($000) $15,042 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 56,614 Value ($000) $15,457 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 52,522 Value ($000) $18,536 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 52,493 Value ($000) $15,696 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 51,950 Value ($000) $14,179 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 51,792 Value ($000) $14,394 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 50,147 Value ($000) $12,811 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 48,143 Value ($000) $11,162 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 49,757 Value ($000) $10,595 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 49,631 Value ($000) $8,860 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 50,578 Value ($000) $9,247 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 50,912 Value ($000) $11,532 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 51,292 Value ($000) $10,670 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 52,066 Value ($000) $11,099 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 51,346 Value ($000) $10,315 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 52,102 Value ($000) $10,638 Avg Close $208.87 Range $186.10 - $224.07

Q2 2018

Shares 53,688 Value ($000) $10,021 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 53,451 Value ($000) $10,662,405 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 53,611 Value ($000) $10,626,772 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 54,254 Value ($000) $9,945,844 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 56,926 Value ($000) $9,641,557 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 57,061 Value ($000) $9,510,927 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 55,187 Value ($000) $8,994,377 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 55,292 Value ($000) $7,988,035 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 53,902 Value ($000) $7,804,471 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 53,958 Value ($000) $7,655,561 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 60,693 Value ($000) $9,113,054 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 53,358 Value ($000) $6,957,883 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 53,483 Value ($000) $7,279,571 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 60,368 Value ($000) $8,712,310 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 60,693 Value ($000) $9,113,054 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 59,637 Value ($000) $8,238,255 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 58,961 Value ($000) $7,462,104 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 54,881 Value ($000) $6,858,479 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 56,718 Value ($000) $6,724,486 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 58,953 Value ($000) $6,691,755 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 60,899 Value ($000) $6,815,816 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	66,898	$33,626	$497.53	$473.15 - $516.85
Q3 2025	70,332	$35,359	$484.36	$455.19 - $507.66
Q2 2025	66,841	$32,469	$507.86	$462.10 - $542.07
Q1 2025	68,235	$36,341	$486.15	$440.10 - $537.63
Q4 2024	69,681	$29,591	$461.73	$437.90 - $491.67
Q3 2024	67,287	$30,970	$442.18	$403.82 - $484.82
Q2 2024	67,098	$27,295	$408.62	$395.66 - $424.52
Q1 2024	67,907	$28,556	$393.34	$355.94 - $430.00
Q4 2023	66,849	$23,842	$350.99	$330.58 - $364.05
Q3 2023	62,510	$21,897	$354.77	$338.41 - $373.34
Q2 2023	59,496	$20,288	$326.37	$307.07 - $342.50
Q1 2023	58,169	$17,961	$308.18	$292.42 - $321.32
Q4 2022	58,463	$18,059	$296.98	$259.85 - $319.56
Q3 2022	56,332	$15,042	$284.56	$261.55 - $308.15
Q2 2022	56,614	$15,457	$313.72	$263.68 - $354.58
Q1 2022	52,522	$18,536	$323.46	$294.81 - $362.10
Q4 2021	52,493	$15,696	$286.41	$272.22 - $301.65
Q3 2021	51,950	$14,179	$280.86	$270.73 - $291.82
Q2 2021	51,792	$14,394	$279.44	$254.80 - $295.08
Q1 2021	50,147	$12,811	$242.84	$226.10 - $267.50
Q4 2020	48,143	$11,162	$220.20	$197.81 - $234.99
Q3 2020	49,757	$10,595	$204.56	$177.34 - $223.24
Q2 2020	49,631	$8,860	$182.62	$167.04 - $203.33
Q1 2020	50,578	$9,247	$212.55	$159.50 - $231.61
Q4 2019	50,912	$11,532	$217.17	$201.33 - $228.23
Q3 2019	51,292	$10,670	$206.04	$195.40 - $216.58
Q2 2019	52,066	$11,099	$206.92	$196.89 - $219.16
Q1 2019	51,346	$10,315	$201.85	$191.04 - $209.40
Q4 2018	52,102	$10,638	$208.87	$186.10 - $224.07
Q2 2018	53,688	$10,021	$194.92	$184.75 - $202.77
Q1 2018	53,451	$10,662,405	$205.34	$189.30 - $217.62
Q4 2017	53,611	$10,626,772	$189.88	$180.44 - $200.50
Q3 2017	54,254	$9,945,844	$176.72	$168.00 - $184.00
Q2 2017	56,926	$9,641,557	$166.33	$160.93 - $171.95
Q1 2017	57,061	$9,510,927	$167.31	$158.61 - $177.86
Q4 2016	55,187	$8,994,377	$153.96	$141.92 - $167.25
Q3 2016	55,292	$7,988,035	$146.25	$140.95 - $151.05
Q2 2016	53,902	$7,804,471	$142.96	$136.65 - $148.03
Q1 2016	53,958	$7,655,561	$132.58	$123.55 - $143.40
Q4 2015	60,693	$9,113,054	$134.20	$127.46 - $138.62
Q3 2015	53,358	$6,957,883	$137.00	$125.50 - $144.69
Q2 2015	53,483	$7,279,571	$142.63	$136.08 - $148.57
Q1 2015	60,368	$8,712,310	$147.14	$142.50 - $151.69
Q4 2014	60,693	$9,113,054	$144.37	$132.03 - $152.94
Q3 2014	59,637	$8,238,255	$133.21	$122.72 - $142.45
Q2 2014	58,961	$7,462,104	$126.57	$121.09 - $129.73
Q1 2014	54,881	$6,858,479	$116.85	$108.12 - $125.91
Q4 2013	56,718	$6,724,486	$115.63	$110.84 - $118.66
Q3 2013	58,953	$6,691,755	$115.36	$110.72 - $119.30
Q2 2013	60,899	$6,815,816	$110.02	$102.69 - $115.98