BERKSHIRE HATHAWAY INC DEL

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

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 2,128,287 Value ($000) $1,069,783 Avg Close $497.53 Range $473.15 - $516.85

Q3 2025

Shares 2,137,872 Value ($000) $1,074,794 Avg Close $484.36 Range $455.19 - $507.66

Q2 2025

Shares 2,113,265 Value ($000) $1,026,561 Avg Close $507.86 Range $462.10 - $542.07

Q1 2025

Shares 2,060,202 Value ($000) $1,097,222 Avg Close $486.15 Range $440.10 - $537.63

Q4 2024

Shares 2,069,066 Value ($000) $937,866 Avg Close $461.73 Range $437.90 - $491.67

Q3 2024

Shares 2,165,252 Value ($000) $996,579 Avg Close $442.18 Range $403.82 - $484.82

Q2 2024

Shares 2,165,645 Value ($000) $880,984 Avg Close $408.62 Range $395.66 - $424.52

Q1 2024

Shares 2,185,766 Value ($000) $919,158 Avg Close $393.34 Range $355.94 - $430.00

Q4 2023

Shares 2,206,453 Value ($000) $786,954 Avg Close $350.99 Range $330.58 - $364.05

Q3 2023

Shares 2,196,083 Value ($000) $769,288 Avg Close $354.77 Range $338.41 - $373.34

Q2 2023

Shares 2,353,551 Value ($000) $802,561 Avg Close $326.37 Range $307.07 - $342.50

Q1 2023

Shares 2,413,720 Value ($000) $745,284 Avg Close $308.18 Range $292.42 - $321.32

Q4 2022

Shares 2,447,374 Value ($000) $755,994 Avg Close $296.98 Range $259.85 - $319.56

Q3 2022

Shares 2,393,777 Value ($000) $639,186 Avg Close $284.56 Range $261.55 - $308.15

Q2 2022

Shares 2,440,621 Value ($000) $666,338 Avg Close $313.72 Range $263.68 - $354.58

Q1 2022

Shares 2,466,659 Value ($000) $870,509 Avg Close $323.46 Range $294.81 - $362.10

Q4 2021

Shares 2,685,036 Value ($000) $802,826 Avg Close $286.41 Range $272.22 - $301.65

Q3 2021

Shares 2,863,748 Value ($000) $781,631 Avg Close $280.86 Range $270.73 - $291.82

Q2 2021

Shares 3,375,378 Value ($000) $938,085 Avg Close $279.44 Range $254.80 - $295.08

Q1 2021

Shares 3,498,064 Value ($000) $893,650 Avg Close $242.84 Range $226.10 - $267.50

Q4 2020

Shares 3,538,691 Value ($000) $820,516 Avg Close $220.20 Range $197.81 - $234.99

Q3 2020

Shares 3,579,977 Value ($000) $762,320 Avg Close $204.56 Range $177.34 - $223.24

Q2 2020

Shares 3,652,176 Value ($000) $651,950 Avg Close $182.62 Range $167.04 - $203.33

Q1 2020

Shares 3,720,793 Value ($000) $680,273 Avg Close $212.55 Range $159.50 - $231.61

Q4 2019

Shares 3,729,770 Value ($000) $844,793 Avg Close $217.17 Range $201.33 - $228.23

Q3 2019

Shares 3,483,069 Value ($000) $724,548 Avg Close $206.04 Range $195.40 - $216.58

Q2 2019

Shares 3,469,391 Value ($000) $739,570 Avg Close $206.92 Range $196.89 - $219.16

Q1 2019

Shares 3,440,755 Value ($000) $691,213 Avg Close $201.85 Range $191.04 - $209.40

Q4 2018

Shares 3,506,663 Value ($000) $715,990 Avg Close $208.87 Range $186.10 - $224.07

Q3 2018

Shares 3,516,451 Value ($000) $752,907 Avg Close $205.18 Range $185.72 - $223.00

Q2 2018

Shares 3,444,373 Value ($000) $642,892 Avg Close $194.92 Range $184.75 - $202.77

Q1 2018

Shares 3,442,578 Value ($000) $686,725 Avg Close $205.34 Range $189.30 - $217.62

Q4 2017

Shares 3,544,189 Value ($000) $702,529 Avg Close $189.88 Range $180.44 - $200.50

Q3 2017

Shares 3,325,237 Value ($000) $609,582 Avg Close $176.72 Range $168.00 - $184.00

Q2 2017

Shares 3,622,072 Value ($000) $613,470 Avg Close $166.33 Range $160.93 - $171.95

Q1 2017

Shares 3,886,838 Value ($000) $647,858 Avg Close $167.31 Range $158.61 - $177.86

Q4 2016

Shares 4,060,338 Value ($000) $661,754 Avg Close $153.96 Range $141.92 - $167.25

Q3 2016

Shares 4,164,638 Value ($000) $601,665 Avg Close $146.25 Range $140.95 - $151.05

Q2 2016

Shares 4,129,538 Value ($000) $597,916 Avg Close $142.96 Range $136.65 - $148.03

Q1 2016

Shares 4,055,754 Value ($000) $575,430 Avg Close $132.58 Range $123.55 - $143.40

Q4 2015

Shares 3,549,119 Value ($000) $468,626 Avg Close $134.20 Range $127.46 - $138.62

Q3 2015

Shares 3,492,933 Value ($000) $455,478 Avg Close $137.00 Range $125.50 - $144.69

Q2 2015

Shares 3,396,784 Value ($000) $462,336 Avg Close $142.63 Range $136.08 - $148.57

Q1 2015

Shares 3,461,187 Value ($000) $499,519 Avg Close $147.14 Range $142.50 - $151.69

Q4 2014

Shares 3,517,124 Value ($000) $528,096 Avg Close $144.37 Range $132.03 - $152.94

Q3 2014

Shares 3,484,996 Value ($000) $481,417 Avg Close $133.21 Range $122.72 - $142.45

Q2 2014

Shares 3,343,190 Value ($000) $423,114 Avg Close $126.57 Range $121.09 - $129.73

Q1 2014

Shares 3,273,690 Value ($000) $409,113 Avg Close $116.85 Range $108.12 - $125.91

Q4 2013

Shares 3,258,390 Value ($000) $386,315 Avg Close $115.63 Range $110.84 - $118.66

Q3 2013

Shares 3,235,990 Value ($000) $367,317 Avg Close $115.36 Range $110.72 - $119.30

Q2 2013

Shares 3,136,033 Value ($000) $350,985 Avg Close $110.02 Range $102.69 - $115.98

Q1 2013

Shares 3,096,078 Value ($000) $322,611 Avg Close $99.00 Range $91.29 - $104.48

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,128,287	$1,069,783	$497.53	$473.15 - $516.85
Q3 2025	2,137,872	$1,074,794	$484.36	$455.19 - $507.66
Q2 2025	2,113,265	$1,026,561	$507.86	$462.10 - $542.07
Q1 2025	2,060,202	$1,097,222	$486.15	$440.10 - $537.63
Q4 2024	2,069,066	$937,866	$461.73	$437.90 - $491.67
Q3 2024	2,165,252	$996,579	$442.18	$403.82 - $484.82
Q2 2024	2,165,645	$880,984	$408.62	$395.66 - $424.52
Q1 2024	2,185,766	$919,158	$393.34	$355.94 - $430.00
Q4 2023	2,206,453	$786,954	$350.99	$330.58 - $364.05
Q3 2023	2,196,083	$769,288	$354.77	$338.41 - $373.34
Q2 2023	2,353,551	$802,561	$326.37	$307.07 - $342.50
Q1 2023	2,413,720	$745,284	$308.18	$292.42 - $321.32
Q4 2022	2,447,374	$755,994	$296.98	$259.85 - $319.56
Q3 2022	2,393,777	$639,186	$284.56	$261.55 - $308.15
Q2 2022	2,440,621	$666,338	$313.72	$263.68 - $354.58
Q1 2022	2,466,659	$870,509	$323.46	$294.81 - $362.10
Q4 2021	2,685,036	$802,826	$286.41	$272.22 - $301.65
Q3 2021	2,863,748	$781,631	$280.86	$270.73 - $291.82
Q2 2021	3,375,378	$938,085	$279.44	$254.80 - $295.08
Q1 2021	3,498,064	$893,650	$242.84	$226.10 - $267.50
Q4 2020	3,538,691	$820,516	$220.20	$197.81 - $234.99
Q3 2020	3,579,977	$762,320	$204.56	$177.34 - $223.24
Q2 2020	3,652,176	$651,950	$182.62	$167.04 - $203.33
Q1 2020	3,720,793	$680,273	$212.55	$159.50 - $231.61
Q4 2019	3,729,770	$844,793	$217.17	$201.33 - $228.23
Q3 2019	3,483,069	$724,548	$206.04	$195.40 - $216.58
Q2 2019	3,469,391	$739,570	$206.92	$196.89 - $219.16
Q1 2019	3,440,755	$691,213	$201.85	$191.04 - $209.40
Q4 2018	3,506,663	$715,990	$208.87	$186.10 - $224.07
Q3 2018	3,516,451	$752,907	$205.18	$185.72 - $223.00
Q2 2018	3,444,373	$642,892	$194.92	$184.75 - $202.77
Q1 2018	3,442,578	$686,725	$205.34	$189.30 - $217.62
Q4 2017	3,544,189	$702,529	$189.88	$180.44 - $200.50
Q3 2017	3,325,237	$609,582	$176.72	$168.00 - $184.00
Q2 2017	3,622,072	$613,470	$166.33	$160.93 - $171.95
Q1 2017	3,886,838	$647,858	$167.31	$158.61 - $177.86
Q4 2016	4,060,338	$661,754	$153.96	$141.92 - $167.25
Q3 2016	4,164,638	$601,665	$146.25	$140.95 - $151.05
Q2 2016	4,129,538	$597,916	$142.96	$136.65 - $148.03
Q1 2016	4,055,754	$575,430	$132.58	$123.55 - $143.40
Q4 2015	3,549,119	$468,626	$134.20	$127.46 - $138.62
Q3 2015	3,492,933	$455,478	$137.00	$125.50 - $144.69
Q2 2015	3,396,784	$462,336	$142.63	$136.08 - $148.57
Q1 2015	3,461,187	$499,519	$147.14	$142.50 - $151.69
Q4 2014	3,517,124	$528,096	$144.37	$132.03 - $152.94
Q3 2014	3,484,996	$481,417	$133.21	$122.72 - $142.45
Q2 2014	3,343,190	$423,114	$126.57	$121.09 - $129.73
Q1 2014	3,273,690	$409,113	$116.85	$108.12 - $125.91
Q4 2013	3,258,390	$386,315	$115.63	$110.84 - $118.66
Q3 2013	3,235,990	$367,317	$115.36	$110.72 - $119.30
Q2 2013	3,136,033	$350,985	$110.02	$102.69 - $115.98
Q1 2013	3,096,078	$322,611	$99.00	$91.29 - $104.48