BERKSHIRE HATHAWAY INC DEL

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

STATE OF WISCONSIN INVESTMENT BOARD's Holding History (CIK: 0000854157)

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

Q4 2025

Shares 720,767 Value ($000) $362,294 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 714,907 Value ($000) $359,412 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 719,210 Value ($000) $349,371 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 750,708 Value ($000) $399,812 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 736,041 Value ($000) $333,633 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 772,736 Value ($000) $355,659 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 744,350 Value ($000) $302,802 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 764,252 Value ($000) $321,383 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 804,864 Value ($000) $287,063 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 745,089 Value ($000) $261,005 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 703,419 Value ($000) $239,866 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 718,160 Value ($000) $221,746 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 675,663 Value ($000) $208,712 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 735,542 Value ($000) $196,404 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 908,219 Value ($000) $247,962 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 956,007 Value ($000) $337,384 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 981,143 Value ($000) $293,362 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 967,776 Value ($000) $264,145 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 964,165 Value ($000) $267,961 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 971,889 Value ($000) $248,288 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 997,105 Value ($000) $231,199 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 1,438,267 Value ($000) $306,265 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 1,433,633 Value ($000) $255,918 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 1,340,724 Value ($000) $245,125 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 1,616,934 Value ($000) $366,236 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 1,593,351 Value ($000) $331,449 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 1,559,867 Value ($000) $332,517 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 1,455,001 Value ($000) $292,295 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 1,480,658 Value ($000) $302,321 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 1,475,458 Value ($000) $315,910 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 1,561,042 Value ($000) $291,368 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 1,622,596 Value ($000) $323,675 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 1,676,805 Value ($000) $332,376 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 1,651,726 Value ($000) $302,794 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 1,568,679 Value ($000) $265,687 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 1,271,069 Value ($000) $211,862 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 1,334,363 Value ($000) $217,474 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 1,497,176 Value ($000) $216,297 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 1,510,776 Value ($000) $218,745 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 1,548,156 Value ($000) $219,652 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 1,552,066 Value ($000) $204,935 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 1,500,506 Value ($000) $195,666 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 1,487,656 Value ($000) $202,485 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 1,389,736 Value ($000) $200,567 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 1,392,776 Value ($000) $209,125 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 1,311,306 Value ($000) $181,144 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 1,514,746 Value ($000) $191,706 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 1,513,956 Value ($000) $189,199 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 1,552,376 Value ($000) $184,050 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 1,580,796 Value ($000) $179,436 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 1,638,366 Value ($000) $183,366 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	720,767	$362,294	$497.53	$473.15 - $516.85
Q3 2025	714,907	$359,412	$484.36	$455.19 - $507.66
Q2 2025	719,210	$349,371	$507.86	$462.10 - $542.07
Q1 2025	750,708	$399,812	$486.15	$440.10 - $537.63
Q4 2024	736,041	$333,633	$461.73	$437.90 - $491.67
Q3 2024	772,736	$355,659	$442.18	$403.82 - $484.82
Q2 2024	744,350	$302,802	$408.62	$395.66 - $424.52
Q1 2024	764,252	$321,383	$393.34	$355.94 - $430.00
Q4 2023	804,864	$287,063	$350.99	$330.58 - $364.05
Q3 2023	745,089	$261,005	$354.77	$338.41 - $373.34
Q2 2023	703,419	$239,866	$326.37	$307.07 - $342.50
Q1 2023	718,160	$221,746	$308.18	$292.42 - $321.32
Q4 2022	675,663	$208,712	$296.98	$259.85 - $319.56
Q3 2022	735,542	$196,404	$284.56	$261.55 - $308.15
Q2 2022	908,219	$247,962	$313.72	$263.68 - $354.58
Q1 2022	956,007	$337,384	$323.46	$294.81 - $362.10
Q4 2021	981,143	$293,362	$286.41	$272.22 - $301.65
Q3 2021	967,776	$264,145	$280.86	$270.73 - $291.82
Q2 2021	964,165	$267,961	$279.44	$254.80 - $295.08
Q1 2021	971,889	$248,288	$242.84	$226.10 - $267.50
Q4 2020	997,105	$231,199	$220.20	$197.81 - $234.99
Q3 2020	1,438,267	$306,265	$204.56	$177.34 - $223.24
Q2 2020	1,433,633	$255,918	$182.62	$167.04 - $203.33
Q1 2020	1,340,724	$245,125	$212.55	$159.50 - $231.61
Q4 2019	1,616,934	$366,236	$217.17	$201.33 - $228.23
Q3 2019	1,593,351	$331,449	$206.04	$195.40 - $216.58
Q2 2019	1,559,867	$332,517	$206.92	$196.89 - $219.16
Q1 2019	1,455,001	$292,295	$201.85	$191.04 - $209.40
Q4 2018	1,480,658	$302,321	$208.87	$186.10 - $224.07
Q3 2018	1,475,458	$315,910	$205.18	$185.72 - $223.00
Q2 2018	1,561,042	$291,368	$194.92	$184.75 - $202.77
Q1 2018	1,622,596	$323,675	$205.34	$189.30 - $217.62
Q4 2017	1,676,805	$332,376	$189.88	$180.44 - $200.50
Q3 2017	1,651,726	$302,794	$176.72	$168.00 - $184.00
Q2 2017	1,568,679	$265,687	$166.33	$160.93 - $171.95
Q1 2017	1,271,069	$211,862	$167.31	$158.61 - $177.86
Q4 2016	1,334,363	$217,474	$153.96	$141.92 - $167.25
Q3 2016	1,497,176	$216,297	$146.25	$140.95 - $151.05
Q2 2016	1,510,776	$218,745	$142.96	$136.65 - $148.03
Q1 2016	1,548,156	$219,652	$132.58	$123.55 - $143.40
Q4 2015	1,552,066	$204,935	$134.20	$127.46 - $138.62
Q3 2015	1,500,506	$195,666	$137.00	$125.50 - $144.69
Q2 2015	1,487,656	$202,485	$142.63	$136.08 - $148.57
Q1 2015	1,389,736	$200,567	$147.14	$142.50 - $151.69
Q4 2014	1,392,776	$209,125	$144.37	$132.03 - $152.94
Q3 2014	1,311,306	$181,144	$133.21	$122.72 - $142.45
Q2 2014	1,514,746	$191,706	$126.57	$121.09 - $129.73
Q1 2014	1,513,956	$189,199	$116.85	$108.12 - $125.91
Q4 2013	1,552,376	$184,050	$115.63	$110.84 - $118.66
Q3 2013	1,580,796	$179,436	$115.36	$110.72 - $119.30
Q2 2013	1,638,366	$183,366	$110.02	$102.69 - $115.98