MARKEL CORP

Ticker: MKL CUSIP: 570535104 Class: COMMON STOCK

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q4 2025

Shares 782 Value ($000) $1,681 Avg Close $2025.92 Range $1812.24 - $2207.59

Q3 2025

Shares 1,408 Value ($000) $2,691 Avg Close $1960.42 Range $1889.91 - $2075.92

Q2 2025

Shares 866 Value ($000) $1,730 Avg Close $1875.20 Range $1621.89 - $2004.24

Q1 2025

Shares 1,341 Value ($000) $2,507 Avg Close $1839.75 Range $1641.51 - $2063.68

Q4 2024

Shares 630 Value ($000) $1,088 Avg Close $1659.34 Range $1521.25 - $1809.11

Q3 2024

Shares 630 Value ($000) $988 Avg Close $1565.15 Range $1491.03 - $1660.74

Q2 2024

Shares 730 Value ($000) $1,150 Avg Close $1552.86 Range $1417.65 - $1670.24

Q1 2024

Shares 730 Value ($000) $1,111 Avg Close $1466.28 Range $1342.66 - $1534.62

Q4 2023

Shares 1,291 Value ($000) $1,833 Avg Close $1418.73 Range $1295.65 - $1528.08

Q3 2023

Shares 2,200 Value ($000) $3,239 Avg Close $1463.82 Range $1345.00 - $1560.00

Q2 2023

Shares 890 Value ($000) $1,231 Avg Close $1340.97 Range $1272.43 - $1400.00

Q1 2023

Shares 890 Value ($000) $1 Avg Close $1328.48 Range $1186.56 - $1458.56

Q4 2022

Shares 710 Value ($000) $1 Avg Close $1237.05 Range $1085.09 - $1356.37

Q3 2022

Shares 710 Value ($000) $770 Avg Close $1220.12 Range $1064.09 - $1335.10

Q2 2022

Shares 700 Value ($000) $905 Avg Close $1372.21 Range $1251.77 - $1519.25

Q1 2022

Shares 700 Value ($000) $1,033 Avg Close $1291.81 Range $1180.00 - $1513.00

Q4 2021

Shares 700 Value ($000) $863 Avg Close $1261.86 Range $1179.00 - $1343.56

Q3 2021

Shares 700 Value ($000) $837 Avg Close $1232.92 Range $1175.35 - $1288.00

Q2 2021

Shares 710 Value ($000) $843 Avg Close $1198.75 Range $1138.00 - $1268.96

Q1 2021

Shares 810 Value ($000) $923 Avg Close $1078.65 Range $942.44 - $1169.50

Q4 2020

Shares 810 Value ($000) $837 Avg Close $996.82 Range $913.04 - $1073.43

Q3 2020

Shares 1,210 Value ($000) $1,178 Avg Close $1015.77 Range $881.00 - $1124.00

Q2 2020

Shares 1,260 Value ($000) $1,163 Avg Close $908.95 Range $761.06 - $1049.56

Q1 2020

Shares 1,280 Value ($000) $1,188 Avg Close $1143.50 Range $710.52 - $1347.64

Q4 2019

Shares 1,070 Value ($000) $1,223 Avg Close $1138.97 Range $1100.00 - $1216.47

Q3 2019

Shares 1,670 Value ($000) $1,974 Avg Close $1136.16 Range $1065.01 - $1204.45

Q2 2019

Shares 1,620 Value ($000) $1,765 Avg Close $1047.93 Range $970.42 - $1099.00

Q1 2019

Shares 1,600 Value ($000) $1,594 Avg Close $1015.52 Range $950.16 - $1081.00

Q4 2018

Shares 1,600 Value ($000) $1,661 Avg Close $1093.58 Range $954.39 - $1203.43

Q3 2018

Shares 1,900 Value ($000) $2,258 Avg Close $1176.81 Range $1078.02 - $1228.32

Q2 2018

Shares 1,900 Value ($000) $2,060 Avg Close $1129.38 Range $1083.92 - $1180.00

Q1 2018

Shares 1,900 Value ($000) $2,148 Avg Close $1125.56 Range $1049.95 - $1194.98

Q4 2017

Shares 2,100 Value ($000) $2,392 Avg Close $1093.18 Range $1054.20 - $1157.30

Q3 2017

Shares 1,800 Value ($000) $1,922 Avg Close $1034.02 Range $963.79 - $1086.68

Q2 2017

Shares 1,800 Value ($000) $1,758 Avg Close $970.65 Range $936.95 - $996.38

Q1 2017

Shares 2,000 Value ($000) $1,952 Avg Close $945.13 Range $887.40 - $992.00

Q4 2016

Shares 2,000 Value ($000) $1,809 Avg Close $891.63 Range $811.05 - $931.94

Q3 2016

Shares 1,600 Value ($000) $1,486 Avg Close $933.01 Range $909.84 - $961.78

Q2 2016

Shares 1,600 Value ($000) $1,524 Avg Close $931.24 Range $880.01 - $989.18

Q1 2016

Shares 1,600 Value ($000) $1,427 Avg Close $859.54 Range $805.03 - $895.03

Q4 2015

Shares 1,600 Value ($000) $1,413 Avg Close $870.15 Range $791.97 - $937.91

Q3 2015

Shares 1,600 Value ($000) $1,283 Avg Close $846.01 Range $775.00 - $898.08

Q2 2015

Shares 1,600 Value ($000) $1,281 Avg Close $777.66 Range $736.96 - $821.00

Q1 2015

Shares 1,700 Value ($000) $1,307 Avg Close $722.91 Range $660.05 - $783.50

Q4 2014

Shares 1,700 Value ($000) $1,161 Avg Close $678.17 Range $632.65 - $707.36

Q3 2014

Shares 1,700 Value ($000) $1,081 Avg Close $645.09 Range $623.90 - $666.00

Q2 2014

Shares 1,400 Value ($000) $918 Avg Close $630.07 Range $593.76 - $655.75

Q1 2014

Shares 1,400 Value ($000) $835 Avg Close $569.59 Range $527.17 - $596.87

Q4 2013

Shares 1,400 Value ($000) $812 Avg Close $542.65 Range $511.06 - $582.59

Q3 2013

Shares 1,900 Value ($000) $984 Avg Close $525.40 Range $506.64 - $549.09

Q2 2013

Shares 1,986 Value ($000) $1,047 Avg Close $523.59 Range $501.76 - $546.94

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	782	$1,681	$2025.92	$1812.24 - $2207.59
Q3 2025	1,408	$2,691	$1960.42	$1889.91 - $2075.92
Q2 2025	866	$1,730	$1875.20	$1621.89 - $2004.24
Q1 2025	1,341	$2,507	$1839.75	$1641.51 - $2063.68
Q4 2024	630	$1,088	$1659.34	$1521.25 - $1809.11
Q3 2024	630	$988	$1565.15	$1491.03 - $1660.74
Q2 2024	730	$1,150	$1552.86	$1417.65 - $1670.24
Q1 2024	730	$1,111	$1466.28	$1342.66 - $1534.62
Q4 2023	1,291	$1,833	$1418.73	$1295.65 - $1528.08
Q3 2023	2,200	$3,239	$1463.82	$1345.00 - $1560.00
Q2 2023	890	$1,231	$1340.97	$1272.43 - $1400.00
Q1 2023	890	$1	$1328.48	$1186.56 - $1458.56
Q4 2022	710	$1	$1237.05	$1085.09 - $1356.37
Q3 2022	710	$770	$1220.12	$1064.09 - $1335.10
Q2 2022	700	$905	$1372.21	$1251.77 - $1519.25
Q1 2022	700	$1,033	$1291.81	$1180.00 - $1513.00
Q4 2021	700	$863	$1261.86	$1179.00 - $1343.56
Q3 2021	700	$837	$1232.92	$1175.35 - $1288.00
Q2 2021	710	$843	$1198.75	$1138.00 - $1268.96
Q1 2021	810	$923	$1078.65	$942.44 - $1169.50
Q4 2020	810	$837	$996.82	$913.04 - $1073.43
Q3 2020	1,210	$1,178	$1015.77	$881.00 - $1124.00
Q2 2020	1,260	$1,163	$908.95	$761.06 - $1049.56
Q1 2020	1,280	$1,188	$1143.50	$710.52 - $1347.64
Q4 2019	1,070	$1,223	$1138.97	$1100.00 - $1216.47
Q3 2019	1,670	$1,974	$1136.16	$1065.01 - $1204.45
Q2 2019	1,620	$1,765	$1047.93	$970.42 - $1099.00
Q1 2019	1,600	$1,594	$1015.52	$950.16 - $1081.00
Q4 2018	1,600	$1,661	$1093.58	$954.39 - $1203.43
Q3 2018	1,900	$2,258	$1176.81	$1078.02 - $1228.32
Q2 2018	1,900	$2,060	$1129.38	$1083.92 - $1180.00
Q1 2018	1,900	$2,148	$1125.56	$1049.95 - $1194.98
Q4 2017	2,100	$2,392	$1093.18	$1054.20 - $1157.30
Q3 2017	1,800	$1,922	$1034.02	$963.79 - $1086.68
Q2 2017	1,800	$1,758	$970.65	$936.95 - $996.38
Q1 2017	2,000	$1,952	$945.13	$887.40 - $992.00
Q4 2016	2,000	$1,809	$891.63	$811.05 - $931.94
Q3 2016	1,600	$1,486	$933.01	$909.84 - $961.78
Q2 2016	1,600	$1,524	$931.24	$880.01 - $989.18
Q1 2016	1,600	$1,427	$859.54	$805.03 - $895.03
Q4 2015	1,600	$1,413	$870.15	$791.97 - $937.91
Q3 2015	1,600	$1,283	$846.01	$775.00 - $898.08
Q2 2015	1,600	$1,281	$777.66	$736.96 - $821.00
Q1 2015	1,700	$1,307	$722.91	$660.05 - $783.50
Q4 2014	1,700	$1,161	$678.17	$632.65 - $707.36
Q3 2014	1,700	$1,081	$645.09	$623.90 - $666.00
Q2 2014	1,400	$918	$630.07	$593.76 - $655.75
Q1 2014	1,400	$835	$569.59	$527.17 - $596.87
Q4 2013	1,400	$812	$542.65	$511.06 - $582.59
Q3 2013	1,900	$984	$525.40	$506.64 - $549.09
Q2 2013	1,986	$1,047	$523.59	$501.76 - $546.94