MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

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

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

Q4 2025

Shares 18,233 Value ($000) $39,195 Avg Close $2025.92 Range $1812.24 - $2207.59

Q3 2025

Shares 17,068 Value ($000) $32,623 Avg Close $1960.42 Range $1889.91 - $2075.92

Q2 2025

Shares 18,688 Value ($000) $37,327 Avg Close $1875.20 Range $1621.89 - $2004.24

Q1 2025

Shares 19,812 Value ($000) $37,041 Avg Close $1839.75 Range $1641.51 - $2063.68

Q4 2024

Shares 19,888 Value ($000) $34,331 Avg Close $1659.34 Range $1521.25 - $1809.11

Q3 2024

Shares 20,199 Value ($000) $31,684 Avg Close $1565.15 Range $1491.03 - $1660.74

Q2 2024

Shares 20,402 Value ($000) $32,147 Avg Close $1552.86 Range $1417.65 - $1670.24

Q1 2024

Shares 18,754 Value ($000) $28,534 Avg Close $1466.28 Range $1342.66 - $1534.62

Q4 2023

Shares 18,439 Value ($000) $26,182 Avg Close $1418.73 Range $1295.65 - $1528.08

Q3 2023

Shares 18,983 Value ($000) $27,952 Avg Close $1463.82 Range $1345.00 - $1560.00

Q2 2023

Shares 20,710 Value ($000) $28,646 Avg Close $1340.97 Range $1272.43 - $1400.00

Q1 2023

Shares 22,223 Value ($000) $28,388 Avg Close $1328.48 Range $1186.56 - $1458.56

Q4 2022

Shares 22,584 Value ($000) $29,754 Avg Close $1237.05 Range $1085.09 - $1356.37

Q3 2022

Shares 22,319 Value ($000) $24,199 Avg Close $1220.12 Range $1064.09 - $1335.10

Q2 2022

Shares 22,605 Value ($000) $29,234 Avg Close $1372.21 Range $1251.77 - $1519.25

Q1 2022

Shares 22,591 Value ($000) $33,327 Avg Close $1291.81 Range $1180.00 - $1513.00

Q4 2021

Shares 24,027 Value ($000) $29,649 Avg Close $1261.86 Range $1179.00 - $1343.56

Q3 2021

Shares 23,678 Value ($000) $28,298 Avg Close $1232.92 Range $1175.35 - $1288.00

Q2 2021

Shares 23,848 Value ($000) $28,301 Avg Close $1198.75 Range $1138.00 - $1268.96

Q1 2021

Shares 24,608 Value ($000) $28,044 Avg Close $1078.65 Range $942.44 - $1169.50

Q4 2020

Shares 24,348 Value ($000) $25,159 Avg Close $996.82 Range $913.04 - $1073.43

Q3 2020

Shares 23,994 Value ($000) $23,363 Avg Close $1015.77 Range $881.00 - $1124.00

Q2 2020

Shares 23,547 Value ($000) $21,738 Avg Close $908.95 Range $761.06 - $1049.56

Q1 2020

Shares 23,796 Value ($000) $22,080 Avg Close $1143.50 Range $710.52 - $1347.64

Q4 2019

Shares 22,413 Value ($000) $25,622 Avg Close $1138.97 Range $1100.00 - $1216.47

Q3 2019

Shares 22,631 Value ($000) $26,748 Avg Close $1136.16 Range $1065.01 - $1204.45

Q2 2019

Shares 22,553 Value ($000) $24,574 Avg Close $1047.93 Range $970.42 - $1099.00

Q1 2019

Shares 22,304 Value ($000) $22,220 Avg Close $1015.52 Range $950.16 - $1081.00

Q4 2018

Shares 22,726 Value ($000) $23,591 Avg Close $1093.58 Range $954.39 - $1203.43

Q3 2018

Shares 23,232 Value ($000) $27,611 Avg Close $1176.81 Range $1078.02 - $1228.32

Q2 2018

Shares 23,228 Value ($000) $25,187 Avg Close $1129.38 Range $1083.92 - $1180.00

Q1 2018

Shares 23,322 Value ($000) $27,293 Avg Close $1125.56 Range $1049.95 - $1194.98

Q4 2017

Shares 24,066 Value ($000) $27,414 Avg Close $1093.18 Range $1054.20 - $1157.30

Q3 2017

Shares 23,807 Value ($000) $25,425 Avg Close $1034.02 Range $963.79 - $1086.68

Q2 2017

Shares 26,037 Value ($000) $25,409 Avg Close $970.65 Range $936.95 - $996.38

Q1 2017

Shares 28,010 Value ($000) $27,333 Avg Close $945.13 Range $887.40 - $992.00

Q4 2016

Shares 29,292 Value ($000) $26,495 Avg Close $891.63 Range $811.05 - $931.94

Q3 2016

Shares 29,992 Value ($000) $27,856 Avg Close $933.01 Range $909.84 - $961.78

Q2 2016

Shares 29,792 Value ($000) $28,385 Avg Close $931.24 Range $880.01 - $989.18

Q1 2016

Shares 30,368 Value ($000) $27,075 Avg Close $859.54 Range $805.03 - $895.03

Q4 2015

Shares 26,609 Value ($000) $23,505 Avg Close $870.15 Range $791.97 - $937.91

Q3 2015

Shares 26,200 Value ($000) $21,009 Avg Close $846.01 Range $775.00 - $898.08

Q2 2015

Shares 25,471 Value ($000) $20,394 Avg Close $777.66 Range $736.96 - $821.00

Q1 2015

Shares 26,423 Value ($000) $20,318 Avg Close $722.91 Range $660.05 - $783.50

Q4 2014

Shares 26,815 Value ($000) $18,310 Avg Close $678.17 Range $632.65 - $707.36

Q3 2014

Shares 26,601 Value ($000) $16,922 Avg Close $645.09 Range $623.90 - $666.00

Q2 2014

Shares 25,545 Value ($000) $16,748 Avg Close $630.07 Range $593.76 - $655.75

Q1 2014

Shares 25,045 Value ($000) $14,929 Avg Close $569.59 Range $527.17 - $596.87

Q4 2013

Shares 24,945 Value ($000) $14,477 Avg Close $542.65 Range $511.06 - $582.59

Q3 2013

Shares 24,745 Value ($000) $12,812 Avg Close $525.40 Range $506.64 - $549.09

Q2 2013

Shares 24,023 Value ($000) $12,659 Avg Close $523.59 Range $501.76 - $546.94

Q1 2013

Shares 16,830 Value ($000) $8,474 Avg Close $483.26 Range $434.98 - $510.05

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	18,233	$39,195	$2025.92	$1812.24 - $2207.59
Q3 2025	17,068	$32,623	$1960.42	$1889.91 - $2075.92
Q2 2025	18,688	$37,327	$1875.20	$1621.89 - $2004.24
Q1 2025	19,812	$37,041	$1839.75	$1641.51 - $2063.68
Q4 2024	19,888	$34,331	$1659.34	$1521.25 - $1809.11
Q3 2024	20,199	$31,684	$1565.15	$1491.03 - $1660.74
Q2 2024	20,402	$32,147	$1552.86	$1417.65 - $1670.24
Q1 2024	18,754	$28,534	$1466.28	$1342.66 - $1534.62
Q4 2023	18,439	$26,182	$1418.73	$1295.65 - $1528.08
Q3 2023	18,983	$27,952	$1463.82	$1345.00 - $1560.00
Q2 2023	20,710	$28,646	$1340.97	$1272.43 - $1400.00
Q1 2023	22,223	$28,388	$1328.48	$1186.56 - $1458.56
Q4 2022	22,584	$29,754	$1237.05	$1085.09 - $1356.37
Q3 2022	22,319	$24,199	$1220.12	$1064.09 - $1335.10
Q2 2022	22,605	$29,234	$1372.21	$1251.77 - $1519.25
Q1 2022	22,591	$33,327	$1291.81	$1180.00 - $1513.00
Q4 2021	24,027	$29,649	$1261.86	$1179.00 - $1343.56
Q3 2021	23,678	$28,298	$1232.92	$1175.35 - $1288.00
Q2 2021	23,848	$28,301	$1198.75	$1138.00 - $1268.96
Q1 2021	24,608	$28,044	$1078.65	$942.44 - $1169.50
Q4 2020	24,348	$25,159	$996.82	$913.04 - $1073.43
Q3 2020	23,994	$23,363	$1015.77	$881.00 - $1124.00
Q2 2020	23,547	$21,738	$908.95	$761.06 - $1049.56
Q1 2020	23,796	$22,080	$1143.50	$710.52 - $1347.64
Q4 2019	22,413	$25,622	$1138.97	$1100.00 - $1216.47
Q3 2019	22,631	$26,748	$1136.16	$1065.01 - $1204.45
Q2 2019	22,553	$24,574	$1047.93	$970.42 - $1099.00
Q1 2019	22,304	$22,220	$1015.52	$950.16 - $1081.00
Q4 2018	22,726	$23,591	$1093.58	$954.39 - $1203.43
Q3 2018	23,232	$27,611	$1176.81	$1078.02 - $1228.32
Q2 2018	23,228	$25,187	$1129.38	$1083.92 - $1180.00
Q1 2018	23,322	$27,293	$1125.56	$1049.95 - $1194.98
Q4 2017	24,066	$27,414	$1093.18	$1054.20 - $1157.30
Q3 2017	23,807	$25,425	$1034.02	$963.79 - $1086.68
Q2 2017	26,037	$25,409	$970.65	$936.95 - $996.38
Q1 2017	28,010	$27,333	$945.13	$887.40 - $992.00
Q4 2016	29,292	$26,495	$891.63	$811.05 - $931.94
Q3 2016	29,992	$27,856	$933.01	$909.84 - $961.78
Q2 2016	29,792	$28,385	$931.24	$880.01 - $989.18
Q1 2016	30,368	$27,075	$859.54	$805.03 - $895.03
Q4 2015	26,609	$23,505	$870.15	$791.97 - $937.91
Q3 2015	26,200	$21,009	$846.01	$775.00 - $898.08
Q2 2015	25,471	$20,394	$777.66	$736.96 - $821.00
Q1 2015	26,423	$20,318	$722.91	$660.05 - $783.50
Q4 2014	26,815	$18,310	$678.17	$632.65 - $707.36
Q3 2014	26,601	$16,922	$645.09	$623.90 - $666.00
Q2 2014	25,545	$16,748	$630.07	$593.76 - $655.75
Q1 2014	25,045	$14,929	$569.59	$527.17 - $596.87
Q4 2013	24,945	$14,477	$542.65	$511.06 - $582.59
Q3 2013	24,745	$12,812	$525.40	$506.64 - $549.09
Q2 2013	24,023	$12,659	$523.59	$501.76 - $546.94
Q1 2013	16,830	$8,474	$483.26	$434.98 - $510.05