BERKSHIRE HATHAWAY INC DEL

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

GRANDFIELD & DODD, LLC's Holding History (CIK: 0001308016)

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

Q4 2025

Shares 100,100 Value ($000) $50,315 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 101,470 Value ($000) $51,013 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 103,288 Value ($000) $50,174 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 102,038 Value ($000) $54,343 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 102,609 Value ($000) $46,511 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 102,357 Value ($000) $47,111 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 102,816 Value ($000) $41,826 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 103,405 Value ($000) $43,484 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 100,649 Value ($000) $35,897 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 102,669 Value ($000) $35,965 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 104,344 Value ($000) $35,581 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 106,903 Value ($000) $33,008 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 107,389 Value ($000) $33,172 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 107,822 Value ($000) $28,790 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 107,097 Value ($000) $29,240 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 108,760 Value ($000) $38,380 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 108,253 Value ($000) $32,370 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 107,612 Value ($000) $29,370 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 106,646 Value ($000) $29,640 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 107,502 Value ($000) $27,460 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 108,765 Value ($000) $25,220 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 110,668 Value ($000) $23,570 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 108,601 Value ($000) $19,390 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 101,229 Value ($000) $18,508 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 101,081 Value ($000) $22,895 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 101,951 Value ($000) $21,208 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 101,589 Value ($000) $21,656 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 104,210 Value ($000) $20,935 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 104,475 Value ($000) $21,332 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 104,970 Value ($000) $22,475 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 107,599 Value ($000) $20,083 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 108,816 Value ($000) $21,707 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 107,422 Value ($000) $21,293 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 111,675 Value ($000) $20,472 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 112,687 Value ($000) $19,086 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 113,440 Value ($000) $18,908 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 114,524 Value ($000) $18,665 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 111,875 Value ($000) $16,163 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 103,860 Value ($000) $15,038 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 103,624 Value ($000) $14,702 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 102,334 Value ($000) $13,512 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 102,109 Value ($000) $13,315 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 101,784 Value ($000) $13,854 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 102,488 Value ($000) $14,791 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 103,204 Value ($000) $15,496 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 105,624 Value ($000) $14,591 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 105,419 Value ($000) $13,342 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 104,019 Value ($000) $12,999 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 102,853 Value ($000) $12,194 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 101,813 Value ($000) $11,557 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 103,171 Value ($000) $11,547 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	100,100	$50,315	$497.53	$473.15 - $516.85
Q3 2025	101,470	$51,013	$484.36	$455.19 - $507.66
Q2 2025	103,288	$50,174	$507.86	$462.10 - $542.07
Q1 2025	102,038	$54,343	$486.15	$440.10 - $537.63
Q4 2024	102,609	$46,511	$461.73	$437.90 - $491.67
Q3 2024	102,357	$47,111	$442.18	$403.82 - $484.82
Q2 2024	102,816	$41,826	$408.62	$395.66 - $424.52
Q1 2024	103,405	$43,484	$393.34	$355.94 - $430.00
Q4 2023	100,649	$35,897	$350.99	$330.58 - $364.05
Q3 2023	102,669	$35,965	$354.77	$338.41 - $373.34
Q2 2023	104,344	$35,581	$326.37	$307.07 - $342.50
Q1 2023	106,903	$33,008	$308.18	$292.42 - $321.32
Q4 2022	107,389	$33,172	$296.98	$259.85 - $319.56
Q3 2022	107,822	$28,790	$284.56	$261.55 - $308.15
Q2 2022	107,097	$29,240	$313.72	$263.68 - $354.58
Q1 2022	108,760	$38,380	$323.46	$294.81 - $362.10
Q4 2021	108,253	$32,370	$286.41	$272.22 - $301.65
Q3 2021	107,612	$29,370	$280.86	$270.73 - $291.82
Q2 2021	106,646	$29,640	$279.44	$254.80 - $295.08
Q1 2021	107,502	$27,460	$242.84	$226.10 - $267.50
Q4 2020	108,765	$25,220	$220.20	$197.81 - $234.99
Q3 2020	110,668	$23,570	$204.56	$177.34 - $223.24
Q2 2020	108,601	$19,390	$182.62	$167.04 - $203.33
Q1 2020	101,229	$18,508	$212.55	$159.50 - $231.61
Q4 2019	101,081	$22,895	$217.17	$201.33 - $228.23
Q3 2019	101,951	$21,208	$206.04	$195.40 - $216.58
Q2 2019	101,589	$21,656	$206.92	$196.89 - $219.16
Q1 2019	104,210	$20,935	$201.85	$191.04 - $209.40
Q4 2018	104,475	$21,332	$208.87	$186.10 - $224.07
Q3 2018	104,970	$22,475	$205.18	$185.72 - $223.00
Q2 2018	107,599	$20,083	$194.92	$184.75 - $202.77
Q1 2018	108,816	$21,707	$205.34	$189.30 - $217.62
Q4 2017	107,422	$21,293	$189.88	$180.44 - $200.50
Q3 2017	111,675	$20,472	$176.72	$168.00 - $184.00
Q2 2017	112,687	$19,086	$166.33	$160.93 - $171.95
Q1 2017	113,440	$18,908	$167.31	$158.61 - $177.86
Q4 2016	114,524	$18,665	$153.96	$141.92 - $167.25
Q3 2016	111,875	$16,163	$146.25	$140.95 - $151.05
Q2 2016	103,860	$15,038	$142.96	$136.65 - $148.03
Q1 2016	103,624	$14,702	$132.58	$123.55 - $143.40
Q4 2015	102,334	$13,512	$134.20	$127.46 - $138.62
Q3 2015	102,109	$13,315	$137.00	$125.50 - $144.69
Q2 2015	101,784	$13,854	$142.63	$136.08 - $148.57
Q1 2015	102,488	$14,791	$147.14	$142.50 - $151.69
Q4 2014	103,204	$15,496	$144.37	$132.03 - $152.94
Q3 2014	105,624	$14,591	$133.21	$122.72 - $142.45
Q2 2014	105,419	$13,342	$126.57	$121.09 - $129.73
Q1 2014	104,019	$12,999	$116.85	$108.12 - $125.91
Q4 2013	102,853	$12,194	$115.63	$110.84 - $118.66
Q3 2013	101,813	$11,557	$115.36	$110.72 - $119.30
Q2 2013	103,171	$11,547	$110.02	$102.69 - $115.98