BERKSHIRE HATHAWAY INC DEL

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

PROSPECTOR PARTNERS LLC's Holding History (CIK: 0001080380)

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

Q4 2025

Shares 9,000 Value ($000) $4,524 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 64,810 Value ($000) $32,583 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 64,810 Value ($000) $31,483 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 64,810 Value ($000) $34,517 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 64,810 Value ($000) $29,377 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 78,310 Value ($000) $36,043 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 78,310 Value ($000) $31,857 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 78,310 Value ($000) $32,931 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 96,398 Value ($000) $34,381 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 96,308 Value ($000) $33,737 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 96,178 Value ($000) $32,797 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 114,108 Value ($000) $35,233 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 145,130 Value ($000) $44,831 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 145,130 Value ($000) $38,753 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 144,070 Value ($000) $39,334 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 162,000 Value ($000) $57,171 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 174,960 Value ($000) $52,313 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 160,920 Value ($000) $43,922 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 162,690 Value ($000) $45,215 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 161,580 Value ($000) $41,279 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 173,205 Value ($000) $40,161 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 174,035 Value ($000) $37,059 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 175,370 Value ($000) $31,305 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 185,750 Value ($000) $33,961 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 189,730 Value ($000) $42,974 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 189,090 Value ($000) $39,335 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 211,650 Value ($000) $45,117 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 213,524 Value ($000) $42,895 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 212,944 Value ($000) $43,479 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 213,334 Value ($000) $45,677 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 213,334 Value ($000) $39,819 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 216,734 Value ($000) $43,234 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 220,394 Value ($000) $43,686 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 225,784 Value ($000) $41,391 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 226,414 Value ($000) $38,348 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 232,554 Value ($000) $38,762 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 233,114 Value ($000) $37,993 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 255,914 Value ($000) $36,972 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 249,914 Value ($000) $36,185 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 249,114 Value ($000) $35,344 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 252,914 Value ($000) $33,395 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 280,114 Value ($000) $36,527 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 310,014 Value ($000) $42,196 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 396,314 Value ($000) $57,196 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 398,714 Value ($000) $59,867 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 509,100 Value ($000) $70,327 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 536,100 Value ($000) $67,848 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 551,200 Value ($000) $68,883 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 580,200 Value ($000) $68,788 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 581,700 Value ($000) $66,029 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 552,800 Value ($000) $61,870 Avg Close $110.02 Range $102.69 - $115.98

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	9,000	$4,524	$497.53	$473.15 - $516.85
Q3 2025	64,810	$32,583	$484.36	$455.19 - $507.66
Q2 2025	64,810	$31,483	$507.86	$462.10 - $542.07
Q1 2025	64,810	$34,517	$486.15	$440.10 - $537.63
Q4 2024	64,810	$29,377	$461.73	$437.90 - $491.67
Q3 2024	78,310	$36,043	$442.18	$403.82 - $484.82
Q2 2024	78,310	$31,857	$408.62	$395.66 - $424.52
Q1 2024	78,310	$32,931	$393.34	$355.94 - $430.00
Q4 2023	96,398	$34,381	$350.99	$330.58 - $364.05
Q3 2023	96,308	$33,737	$354.77	$338.41 - $373.34
Q2 2023	96,178	$32,797	$326.37	$307.07 - $342.50
Q1 2023	114,108	$35,233	$308.18	$292.42 - $321.32
Q4 2022	145,130	$44,831	$296.98	$259.85 - $319.56
Q3 2022	145,130	$38,753	$284.56	$261.55 - $308.15
Q2 2022	144,070	$39,334	$313.72	$263.68 - $354.58
Q1 2022	162,000	$57,171	$323.46	$294.81 - $362.10
Q4 2021	174,960	$52,313	$286.41	$272.22 - $301.65
Q3 2021	160,920	$43,922	$280.86	$270.73 - $291.82
Q2 2021	162,690	$45,215	$279.44	$254.80 - $295.08
Q1 2021	161,580	$41,279	$242.84	$226.10 - $267.50
Q4 2020	173,205	$40,161	$220.20	$197.81 - $234.99
Q3 2020	174,035	$37,059	$204.56	$177.34 - $223.24
Q2 2020	175,370	$31,305	$182.62	$167.04 - $203.33
Q1 2020	185,750	$33,961	$212.55	$159.50 - $231.61
Q4 2019	189,730	$42,974	$217.17	$201.33 - $228.23
Q3 2019	189,090	$39,335	$206.04	$195.40 - $216.58
Q2 2019	211,650	$45,117	$206.92	$196.89 - $219.16
Q1 2019	213,524	$42,895	$201.85	$191.04 - $209.40
Q4 2018	212,944	$43,479	$208.87	$186.10 - $224.07
Q3 2018	213,334	$45,677	$205.18	$185.72 - $223.00
Q2 2018	213,334	$39,819	$194.92	$184.75 - $202.77
Q1 2018	216,734	$43,234	$205.34	$189.30 - $217.62
Q4 2017	220,394	$43,686	$189.88	$180.44 - $200.50
Q3 2017	225,784	$41,391	$176.72	$168.00 - $184.00
Q2 2017	226,414	$38,348	$166.33	$160.93 - $171.95
Q1 2017	232,554	$38,762	$167.31	$158.61 - $177.86
Q4 2016	233,114	$37,993	$153.96	$141.92 - $167.25
Q3 2016	255,914	$36,972	$146.25	$140.95 - $151.05
Q2 2016	249,914	$36,185	$142.96	$136.65 - $148.03
Q1 2016	249,114	$35,344	$132.58	$123.55 - $143.40
Q4 2015	252,914	$33,395	$134.20	$127.46 - $138.62
Q3 2015	280,114	$36,527	$137.00	$125.50 - $144.69
Q2 2015	310,014	$42,196	$142.63	$136.08 - $148.57
Q1 2015	396,314	$57,196	$147.14	$142.50 - $151.69
Q4 2014	398,714	$59,867	$144.37	$132.03 - $152.94
Q3 2014	509,100	$70,327	$133.21	$122.72 - $142.45
Q2 2014	536,100	$67,848	$126.57	$121.09 - $129.73
Q1 2014	551,200	$68,883	$116.85	$108.12 - $125.91
Q4 2013	580,200	$68,788	$115.63	$110.84 - $118.66
Q3 2013	581,700	$66,029	$115.36	$110.72 - $119.30
Q2 2013	552,800	$61,870	$110.02	$102.69 - $115.98