BERKSHIRE HATHAWAY INC DEL

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

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2025

Shares 447,062 Value ($000) $224,716 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 445,234 Value ($000) $223,837 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 442,597 Value ($000) $215,000 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 420,754 Value ($000) $224,085 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 419,119 Value ($000) $189,978 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 407,857 Value ($000) $187,720 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 406,304 Value ($000) $165,284 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 395,699 Value ($000) $166,399 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 380,484 Value ($000) $135,703 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 355,627 Value ($000) $124,576 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 351,928 Value ($000) $120,007 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 358,116 Value ($000) $110,575 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 356,957 Value ($000) $110,264 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 335,919 Value ($000) $89,697 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 326,339 Value ($000) $89,097 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 326,741 Value ($000) $115,310 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 327,647 Value ($000) $97,966 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 314,155 Value ($000) $85,746 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 306,490 Value ($000) $85,180 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 307,470 Value ($000) $78,549 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 358,431 Value ($000) $83,109 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 345,982 Value ($000) $73,673 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 350,474 Value ($000) $62,563 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 552,795 Value ($000) $101,067 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 553,739 Value ($000) $125,422 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 540,036 Value ($000) $112,338 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 579,257 Value ($000) $123,480 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 547,706 Value ($000) $110,029 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 528,483 Value ($000) $107,906 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 519,439 Value ($000) $111,217 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 500,306 Value ($000) $93,382 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 491,612 Value ($000) $98,067 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 468,532 Value ($000) $92,872 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 425,125 Value ($000) $77,934 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 400,792 Value ($000) $67,882 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 352,189 Value ($000) $60,010 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 326,589 Value ($000) $53,227 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 316,813 Value ($000) $45,770 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 365,360 Value ($000) $44,915 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 325,504 Value ($000) $46,182 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 320,179 Value ($000) $42,276 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 351,815 Value ($000) $45,876 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 346,490 Value ($000) $47,160 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 339,828 Value ($000) $49,043 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 336,231 Value ($000) $50,485 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 319,369 Value ($000) $44,117 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 299,469 Value ($000) $37,900 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 283,046 Value ($000) $35,371 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 284,033 Value ($000) $33,674 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 283,200 Value ($000) $32,145 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 280,709 Value ($000) $31,416 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	447,062	$224,716	$497.53	$473.15 - $516.85
Q3 2025	445,234	$223,837	$484.36	$455.19 - $507.66
Q2 2025	442,597	$215,000	$507.86	$462.10 - $542.07
Q1 2025	420,754	$224,085	$486.15	$440.10 - $537.63
Q4 2024	419,119	$189,978	$461.73	$437.90 - $491.67
Q3 2024	407,857	$187,720	$442.18	$403.82 - $484.82
Q2 2024	406,304	$165,284	$408.62	$395.66 - $424.52
Q1 2024	395,699	$166,399	$393.34	$355.94 - $430.00
Q4 2023	380,484	$135,703	$350.99	$330.58 - $364.05
Q3 2023	355,627	$124,576	$354.77	$338.41 - $373.34
Q2 2023	351,928	$120,007	$326.37	$307.07 - $342.50
Q1 2023	358,116	$110,575	$308.18	$292.42 - $321.32
Q4 2022	356,957	$110,264	$296.98	$259.85 - $319.56
Q3 2022	335,919	$89,697	$284.56	$261.55 - $308.15
Q2 2022	326,339	$89,097	$313.72	$263.68 - $354.58
Q1 2022	326,741	$115,310	$323.46	$294.81 - $362.10
Q4 2021	327,647	$97,966	$286.41	$272.22 - $301.65
Q3 2021	314,155	$85,746	$280.86	$270.73 - $291.82
Q2 2021	306,490	$85,180	$279.44	$254.80 - $295.08
Q1 2021	307,470	$78,549	$242.84	$226.10 - $267.50
Q4 2020	358,431	$83,109	$220.20	$197.81 - $234.99
Q3 2020	345,982	$73,673	$204.56	$177.34 - $223.24
Q2 2020	350,474	$62,563	$182.62	$167.04 - $203.33
Q1 2020	552,795	$101,067	$212.55	$159.50 - $231.61
Q4 2019	553,739	$125,422	$217.17	$201.33 - $228.23
Q3 2019	540,036	$112,338	$206.04	$195.40 - $216.58
Q2 2019	579,257	$123,480	$206.92	$196.89 - $219.16
Q1 2019	547,706	$110,029	$201.85	$191.04 - $209.40
Q4 2018	528,483	$107,906	$208.87	$186.10 - $224.07
Q3 2018	519,439	$111,217	$205.18	$185.72 - $223.00
Q2 2018	500,306	$93,382	$194.92	$184.75 - $202.77
Q1 2018	491,612	$98,067	$205.34	$189.30 - $217.62
Q4 2017	468,532	$92,872	$189.88	$180.44 - $200.50
Q3 2017	425,125	$77,934	$176.72	$168.00 - $184.00
Q2 2017	400,792	$67,882	$166.33	$160.93 - $171.95
Q1 2017	352,189	$60,010	$167.31	$158.61 - $177.86
Q4 2016	326,589	$53,227	$153.96	$141.92 - $167.25
Q3 2016	316,813	$45,770	$146.25	$140.95 - $151.05
Q2 2016	365,360	$44,915	$142.96	$136.65 - $148.03
Q1 2016	325,504	$46,182	$132.58	$123.55 - $143.40
Q4 2015	320,179	$42,276	$134.20	$127.46 - $138.62
Q3 2015	351,815	$45,876	$137.00	$125.50 - $144.69
Q2 2015	346,490	$47,160	$142.63	$136.08 - $148.57
Q1 2015	339,828	$49,043	$147.14	$142.50 - $151.69
Q4 2014	336,231	$50,485	$144.37	$132.03 - $152.94
Q3 2014	319,369	$44,117	$133.21	$122.72 - $142.45
Q2 2014	299,469	$37,900	$126.57	$121.09 - $129.73
Q1 2014	283,046	$35,371	$116.85	$108.12 - $125.91
Q4 2013	284,033	$33,674	$115.63	$110.84 - $118.66
Q3 2013	283,200	$32,145	$115.36	$110.72 - $119.30
Q2 2013	280,709	$31,416	$110.02	$102.69 - $115.98