BERKSHIRE HATHAWAY INC DEL

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

Mechanics Bank Trust Department's Holding History (CIK: 0001439743)

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

Q4 2025

Shares 19,124 Value ($000) $9,613 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 19,228 Value ($000) $9,667 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 19,559 Value ($000) $9,501 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 19,101 Value ($000) $10,173 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 17,831 Value ($000) $8,082 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 17,969 Value ($000) $8,270 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 18,171 Value ($000) $7,392 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 18,685 Value ($000) $7,857 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 18,842 Value ($000) $6,720 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 22,174 Value ($000) $7,768 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 22,399 Value ($000) $7,638 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 22,189 Value ($000) $6,851 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 22,485 Value ($000) $6,946 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 22,682 Value ($000) $6,057 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 22,426 Value ($000) $6,123 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 22,171 Value ($000) $7,825 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 22,742 Value ($000) $6,800 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 23,418 Value ($000) $6,392 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 25,895 Value ($000) $7,196 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 26,441 Value ($000) $6,754 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 26,675 Value ($000) $6,185 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 26,757 Value ($000) $5,698 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 27,120 Value ($000) $4,842 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 27,034 Value ($000) $4,942 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 26,936 Value ($000) $6,102 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 26,986 Value ($000) $5,614 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 23,454 Value ($000) $5,000 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 23,688 Value ($000) $4,759 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 23,833 Value ($000) $4,867 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 23,564 Value ($000) $5,045 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 23,659 Value ($000) $4,416 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 22,834 Value ($000) $4,555 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 23,030 Value ($000) $4,565 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 22,980 Value ($000) $4,213 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 24,990 Value ($000) $4,233 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 24,965 Value ($000) $4,161 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 27,795 Value ($000) $4,530 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 28,230 Value ($000) $4,078 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 27,955 Value ($000) $4,048 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 27,910 Value ($000) $3,960 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 27,280 Value ($000) $3,602 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 29,113 Value ($000) $3,796 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 26,169 Value ($000) $3,562 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 26,308 Value ($000) $3,796 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 24,698 Value ($000) $3,708 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 24,190 Value ($000) $3,342 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 26,870 Value ($000) $3,401 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 32,066 Value ($000) $4,007 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 31,991 Value ($000) $3,793 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 32,241 Value ($000) $3,660 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 31,886 Value ($000) $3,569 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	19,124	$9,613	$497.53	$473.15 - $516.85
Q3 2025	19,228	$9,667	$484.36	$455.19 - $507.66
Q2 2025	19,559	$9,501	$507.86	$462.10 - $542.07
Q1 2025	19,101	$10,173	$486.15	$440.10 - $537.63
Q4 2024	17,831	$8,082	$461.73	$437.90 - $491.67
Q3 2024	17,969	$8,270	$442.18	$403.82 - $484.82
Q2 2024	18,171	$7,392	$408.62	$395.66 - $424.52
Q1 2024	18,685	$7,857	$393.34	$355.94 - $430.00
Q4 2023	18,842	$6,720	$350.99	$330.58 - $364.05
Q3 2023	22,174	$7,768	$354.77	$338.41 - $373.34
Q2 2023	22,399	$7,638	$326.37	$307.07 - $342.50
Q1 2023	22,189	$6,851	$308.18	$292.42 - $321.32
Q4 2022	22,485	$6,946	$296.98	$259.85 - $319.56
Q3 2022	22,682	$6,057	$284.56	$261.55 - $308.15
Q2 2022	22,426	$6,123	$313.72	$263.68 - $354.58
Q1 2022	22,171	$7,825	$323.46	$294.81 - $362.10
Q4 2021	22,742	$6,800	$286.41	$272.22 - $301.65
Q3 2021	23,418	$6,392	$280.86	$270.73 - $291.82
Q2 2021	25,895	$7,196	$279.44	$254.80 - $295.08
Q1 2021	26,441	$6,754	$242.84	$226.10 - $267.50
Q4 2020	26,675	$6,185	$220.20	$197.81 - $234.99
Q3 2020	26,757	$5,698	$204.56	$177.34 - $223.24
Q2 2020	27,120	$4,842	$182.62	$167.04 - $203.33
Q1 2020	27,034	$4,942	$212.55	$159.50 - $231.61
Q4 2019	26,936	$6,102	$217.17	$201.33 - $228.23
Q3 2019	26,986	$5,614	$206.04	$195.40 - $216.58
Q2 2019	23,454	$5,000	$206.92	$196.89 - $219.16
Q1 2019	23,688	$4,759	$201.85	$191.04 - $209.40
Q4 2018	23,833	$4,867	$208.87	$186.10 - $224.07
Q3 2018	23,564	$5,045	$205.18	$185.72 - $223.00
Q2 2018	23,659	$4,416	$194.92	$184.75 - $202.77
Q1 2018	22,834	$4,555	$205.34	$189.30 - $217.62
Q4 2017	23,030	$4,565	$189.88	$180.44 - $200.50
Q3 2017	22,980	$4,213	$176.72	$168.00 - $184.00
Q2 2017	24,990	$4,233	$166.33	$160.93 - $171.95
Q1 2017	24,965	$4,161	$167.31	$158.61 - $177.86
Q4 2016	27,795	$4,530	$153.96	$141.92 - $167.25
Q3 2016	28,230	$4,078	$146.25	$140.95 - $151.05
Q2 2016	27,955	$4,048	$142.96	$136.65 - $148.03
Q1 2016	27,910	$3,960	$132.58	$123.55 - $143.40
Q4 2015	27,280	$3,602	$134.20	$127.46 - $138.62
Q3 2015	29,113	$3,796	$137.00	$125.50 - $144.69
Q2 2015	26,169	$3,562	$142.63	$136.08 - $148.57
Q1 2015	26,308	$3,796	$147.14	$142.50 - $151.69
Q4 2014	24,698	$3,708	$144.37	$132.03 - $152.94
Q3 2014	24,190	$3,342	$133.21	$122.72 - $142.45
Q2 2014	26,870	$3,401	$126.57	$121.09 - $129.73
Q1 2014	32,066	$4,007	$116.85	$108.12 - $125.91
Q4 2013	31,991	$3,793	$115.63	$110.84 - $118.66
Q3 2013	32,241	$3,660	$115.36	$110.72 - $119.30
Q2 2013	31,886	$3,569	$110.02	$102.69 - $115.98