BERKSHIRE HATHAWAY INC DEL

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

AMG National Trust Bank's Holding History (CIK: 0001388829)

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

Q4 2025

Shares 21,092 Value ($000) $10,602 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 22,163 Value ($000) $11,142 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 23,320 Value ($000) $11,328 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 23,148 Value ($000) $12,342 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 23,799 Value ($000) $11,222 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 23,247 Value ($000) $10,700 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 29,982 Value ($000) $12,197 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 23,351 Value ($000) $9,820 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 22,943 Value ($000) $8,183 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 21,453 Value ($000) $7,515 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 21,728 Value ($000) $7,406 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 21,318 Value ($000) $6,573 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 20,772 Value ($000) $6,410 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 25,542 Value ($000) $6,842 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 20,692 Value ($000) $5,990 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 20,772 Value ($000) $7,349 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 23,772 Value ($000) $7,112 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 24,355 Value ($000) $6,649 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 23,945 Value ($000) $6,654 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 32,061 Value ($000) $8,160 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 33,980 Value ($000) $7,879 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 34,702 Value ($000) $7,386 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 37,452 Value ($000) $6,674 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 16,182 Value ($000) $2,968 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 6,858 Value ($000) $1,550 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 8,366 Value ($000) $1,720 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 8,397 Value ($000) $1,660 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 5,445 Value ($000) $1,098 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 5,366 Value ($000) $1,105 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 5,366 Value ($000) $1,152 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 5,366 Value ($000) $999 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 5,116 Value ($000) $1,021 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 5,116 Value ($000) $1,014 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 4,042 Value ($000) $741 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 4,779 Value ($000) $809 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 5,101 Value ($000) $850 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 5,515 Value ($000) $899 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 6,677 Value ($000) $965 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 6,329 Value ($000) $916 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 5,688 Value ($000) $807 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 5,688 Value ($000) $751 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 6,240 Value ($000) $814 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 6,861 Value ($000) $934 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 3,861 Value ($000) $557 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 2,911 Value ($000) $437 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 2,697 Value ($000) $373 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 2,612 Value ($000) $330 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 2,612 Value ($000) $326 Avg Close $116.85 Range $108.12 - $125.91

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	21,092	$10,602	$497.53	$473.15 - $516.85
Q3 2025	22,163	$11,142	$484.36	$455.19 - $507.66
Q2 2025	23,320	$11,328	$507.86	$462.10 - $542.07
Q1 2025	23,148	$12,342	$486.15	$440.10 - $537.63
Q4 2024	23,799	$11,222	$461.73	$437.90 - $491.67
Q3 2024	23,247	$10,700	$442.18	$403.82 - $484.82
Q2 2024	29,982	$12,197	$408.62	$395.66 - $424.52
Q1 2024	23,351	$9,820	$393.34	$355.94 - $430.00
Q4 2023	22,943	$8,183	$350.99	$330.58 - $364.05
Q3 2023	21,453	$7,515	$354.77	$338.41 - $373.34
Q2 2023	21,728	$7,406	$326.37	$307.07 - $342.50
Q1 2023	21,318	$6,573	$308.18	$292.42 - $321.32
Q4 2022	20,772	$6,410	$296.98	$259.85 - $319.56
Q3 2022	25,542	$6,842	$284.56	$261.55 - $308.15
Q2 2022	20,692	$5,990	$313.72	$263.68 - $354.58
Q1 2022	20,772	$7,349	$323.46	$294.81 - $362.10
Q4 2021	23,772	$7,112	$286.41	$272.22 - $301.65
Q3 2021	24,355	$6,649	$280.86	$270.73 - $291.82
Q2 2021	23,945	$6,654	$279.44	$254.80 - $295.08
Q1 2021	32,061	$8,160	$242.84	$226.10 - $267.50
Q4 2020	33,980	$7,879	$220.20	$197.81 - $234.99
Q3 2020	34,702	$7,386	$204.56	$177.34 - $223.24
Q2 2020	37,452	$6,674	$182.62	$167.04 - $203.33
Q1 2020	16,182	$2,968	$212.55	$159.50 - $231.61
Q4 2019	6,858	$1,550	$217.17	$201.33 - $228.23
Q3 2019	8,366	$1,720	$206.04	$195.40 - $216.58
Q2 2019	8,397	$1,660	$206.92	$196.89 - $219.16
Q1 2019	5,445	$1,098	$201.85	$191.04 - $209.40
Q4 2018	5,366	$1,105	$208.87	$186.10 - $224.07
Q3 2018	5,366	$1,152	$205.18	$185.72 - $223.00
Q2 2018	5,366	$999	$194.92	$184.75 - $202.77
Q1 2018	5,116	$1,021	$205.34	$189.30 - $217.62
Q4 2017	5,116	$1,014	$189.88	$180.44 - $200.50
Q3 2017	4,042	$741	$176.72	$168.00 - $184.00
Q2 2017	4,779	$809	$166.33	$160.93 - $171.95
Q1 2017	5,101	$850	$167.31	$158.61 - $177.86
Q4 2016	5,515	$899	$153.96	$141.92 - $167.25
Q3 2016	6,677	$965	$146.25	$140.95 - $151.05
Q2 2016	6,329	$916	$142.96	$136.65 - $148.03
Q1 2016	5,688	$807	$132.58	$123.55 - $143.40
Q4 2015	5,688	$751	$134.20	$127.46 - $138.62
Q3 2015	6,240	$814	$137.00	$125.50 - $144.69
Q2 2015	6,861	$934	$142.63	$136.08 - $148.57
Q1 2015	3,861	$557	$147.14	$142.50 - $151.69
Q4 2014	2,911	$437	$144.37	$132.03 - $152.94
Q3 2014	2,697	$373	$133.21	$122.72 - $142.45
Q2 2014	2,612	$330	$126.57	$121.09 - $129.73
Q1 2014	2,612	$326	$116.85	$108.12 - $125.91