BERKSHIRE HATHAWAY INC DEL

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

SOMERVILLE KURT F's Holding History (CIK: 0001215208)

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

Q4 2025

Shares 2,573 Value ($000) $1,293 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 3,148 Value ($000) $1,583 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 3,251 Value ($000) $1,579 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 3,314 Value ($000) $1,765 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 3,114 Value ($000) $1,412 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 3,399 Value ($000) $1,564 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 3,749 Value ($000) $1,525 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 3,899 Value ($000) $1,640 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 4,124 Value ($000) $1,471 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 4,199 Value ($000) $1,471 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 4,719 Value ($000) $1,609 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 4,719 Value ($000) $1,457 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 4,744 Value ($000) $1,465 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 4,744 Value ($000) $1,267 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 4,744 Value ($000) $1,296 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 4,819 Value ($000) $1,700 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 4,936 Value ($000) $1,476 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 5,052 Value ($000) $1,379 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 5,077 Value ($000) $1,411 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 5,329 Value ($000) $1,362 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 5,329 Value ($000) $1,236 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 5,529 Value ($000) $1,178 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 5,529 Value ($000) $986 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 5,529 Value ($000) $1,012 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 5,797 Value ($000) $1,313 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 6,484 Value ($000) $1,348 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 6,484 Value ($000) $1,382 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 6,846 Value ($000) $1,376 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 5,740 Value ($000) $1,173 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 5,765 Value ($000) $1,235 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 5,865 Value ($000) $1,095 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 6,000 Value ($000) $1,197 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 6,075 Value ($000) $1,204 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 7,200 Value ($000) $1,319 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 7,450 Value ($000) $1,262 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 7,575 Value ($000) $1,264 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 7,700 Value ($000) $1,255 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 8,150 Value ($000) $1,177 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 8,100 Value ($000) $1,173 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 8,128 Value ($000) $1,153 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 10,678 Value ($000) $1,409 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 8,878 Value ($000) $1,157 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 6,828 Value ($000) $929 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 6,878 Value ($000) $993 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 7,448 Value ($000) $1,118 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 3,598 Value ($000) $497 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 3,598 Value ($000) $455 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 3,608 Value ($000) $451 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 3,750 Value ($000) $444 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 3,750 Value ($000) $425 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 3,750 Value ($000) $420 Avg Close $110.02 Range $102.69 - $115.98

Q1 2013

Shares 3,850 Value ($000) $402 Avg Close $99.00 Range $91.29 - $104.48

Q4 2012

Shares 3,850 Value ($000) $345 Avg Close — Range —

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,573	$1,293	$497.53	$473.15 - $516.85
Q3 2025	3,148	$1,583	$484.36	$455.19 - $507.66
Q2 2025	3,251	$1,579	$507.86	$462.10 - $542.07
Q1 2025	3,314	$1,765	$486.15	$440.10 - $537.63
Q4 2024	3,114	$1,412	$461.73	$437.90 - $491.67
Q3 2024	3,399	$1,564	$442.18	$403.82 - $484.82
Q2 2024	3,749	$1,525	$408.62	$395.66 - $424.52
Q1 2024	3,899	$1,640	$393.34	$355.94 - $430.00
Q4 2023	4,124	$1,471	$350.99	$330.58 - $364.05
Q3 2023	4,199	$1,471	$354.77	$338.41 - $373.34
Q2 2023	4,719	$1,609	$326.37	$307.07 - $342.50
Q1 2023	4,719	$1,457	$308.18	$292.42 - $321.32
Q4 2022	4,744	$1,465	$296.98	$259.85 - $319.56
Q3 2022	4,744	$1,267	$284.56	$261.55 - $308.15
Q2 2022	4,744	$1,296	$313.72	$263.68 - $354.58
Q1 2022	4,819	$1,700	$323.46	$294.81 - $362.10
Q4 2021	4,936	$1,476	$286.41	$272.22 - $301.65
Q3 2021	5,052	$1,379	$280.86	$270.73 - $291.82
Q2 2021	5,077	$1,411	$279.44	$254.80 - $295.08
Q1 2021	5,329	$1,362	$242.84	$226.10 - $267.50
Q4 2020	5,329	$1,236	$220.20	$197.81 - $234.99
Q3 2020	5,529	$1,178	$204.56	$177.34 - $223.24
Q2 2020	5,529	$986	$182.62	$167.04 - $203.33
Q1 2020	5,529	$1,012	$212.55	$159.50 - $231.61
Q4 2019	5,797	$1,313	$217.17	$201.33 - $228.23
Q3 2019	6,484	$1,348	$206.04	$195.40 - $216.58
Q2 2019	6,484	$1,382	$206.92	$196.89 - $219.16
Q1 2019	6,846	$1,376	$201.85	$191.04 - $209.40
Q4 2018	5,740	$1,173	$208.87	$186.10 - $224.07
Q3 2018	5,765	$1,235	$205.18	$185.72 - $223.00
Q2 2018	5,865	$1,095	$194.92	$184.75 - $202.77
Q1 2018	6,000	$1,197	$205.34	$189.30 - $217.62
Q4 2017	6,075	$1,204	$189.88	$180.44 - $200.50
Q3 2017	7,200	$1,319	$176.72	$168.00 - $184.00
Q2 2017	7,450	$1,262	$166.33	$160.93 - $171.95
Q1 2017	7,575	$1,264	$167.31	$158.61 - $177.86
Q4 2016	7,700	$1,255	$153.96	$141.92 - $167.25
Q3 2016	8,150	$1,177	$146.25	$140.95 - $151.05
Q2 2016	8,100	$1,173	$142.96	$136.65 - $148.03
Q1 2016	8,128	$1,153	$132.58	$123.55 - $143.40
Q4 2015	10,678	$1,409	$134.20	$127.46 - $138.62
Q3 2015	8,878	$1,157	$137.00	$125.50 - $144.69
Q2 2015	6,828	$929	$142.63	$136.08 - $148.57
Q1 2015	6,878	$993	$147.14	$142.50 - $151.69
Q4 2014	7,448	$1,118	$144.37	$132.03 - $152.94
Q3 2014	3,598	$497	$133.21	$122.72 - $142.45
Q2 2014	3,598	$455	$126.57	$121.09 - $129.73
Q1 2014	3,608	$451	$116.85	$108.12 - $125.91
Q4 2013	3,750	$444	$115.63	$110.84 - $118.66
Q3 2013	3,750	$425	$115.36	$110.72 - $119.30
Q2 2013	3,750	$420	$110.02	$102.69 - $115.98
Q1 2013	3,850	$402	$99.00	$91.29 - $104.48
Q4 2012	3,850	$345	—	—