WHITE MTNS INS GROUP LTD

Ticker: WTM CUSIP: G9618E107 Class: COM

BANK OF MONTREAL /CAN/'s Holding History (CIK: 0000927971)

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

Q4 2025

Shares 431 Value ($000) $896 Avg Close $1955.46 Range $1648.00 - $2143.25

Q3 2025

Shares 432 Value ($000) $722 Avg Close $1784.36 Range $1659.17 - $1880.11

Q2 2025

Shares 432 Value ($000) $776 Avg Close $1778.53 Range $1678.87 - $1937.23

Q1 2025

Shares 416 Value ($000) $801 Avg Close $1882.39 Range $1803.96 - $1993.86

Q4 2024

Shares 416 Value ($000) $809 Avg Close $1889.39 Range $1708.50 - $2023.00

Q3 2024

Shares 425 Value ($000) $723 Avg Close $1743.65 Range $1666.22 - $1847.78

Q2 2024

Shares 429 Value ($000) $795 Avg Close $1768.70 Range $1665.71 - $1899.21

Q1 2024

Shares 429 Value ($000) $790 Avg Close $1676.26 Range $1475.00 - $1849.99

Q4 2023

Shares 430 Value ($000) $652 Avg Close $1486.19 Range $1401.01 - $1562.63

Q3 2023

Shares 430 Value ($000) $688 Avg Close $1535.39 Range $1370.75 - $1617.00

Q2 2023

Shares 448 Value ($000) $635 Avg Close $1407.80 Range $1319.05 - $1540.09

Q1 2023

Shares 434 Value ($000) $668 Avg Close $1434.16 Range $1312.00 - $1560.21

Q4 2022

Shares 430 Value ($000) $616 Avg Close $1355.05 Range $1276.05 - $1435.45

Q3 2022

Shares 412 Value ($000) $568 Avg Close $1293.71 Range $1172.00 - $1393.48

Q2 2022

Shares 535 Value ($000) $685 Avg Close $1161.60 Range $1030.38 - $1291.50

Q1 2022

Shares 425 Value ($000) $470 Avg Close $1046.91 Range $982.60 - $1141.97

Q4 2021

Shares 433 Value ($000) $440 Avg Close $1056.38 Range $978.51 - $1137.50

Q3 2021

Shares 439 Value ($000) $489 Avg Close $1116.81 Range $1056.96 - $1179.20

Q2 2021

Shares 442 Value ($000) $509 Avg Close $1167.46 Range $1100.61 - $1243.00

Q1 2021

Shares 565 Value ($000) $651 Avg Close $1118.45 Range $994.91 - $1267.52

Q4 2020

Shares 786 Value ($000) $832 Avg Close $940.82 Range $778.11 - $1024.02

Q3 2020

Shares 706 Value ($000) $594 Avg Close $864.63 Range $752.10 - $961.96

Q2 2020

Shares 355 Value ($000) $298 Avg Close $901.27 Range $813.24 - $1012.83

Q1 2020

Shares 364 Value ($000) $347 Avg Close $1035.04 Range $629.21 - $1168.21

Q4 2019

Shares 1,130 Value ($000) $1,260 Avg Close $1090.77 Range $1054.00 - $1131.50

Q3 2019

Shares 1,134 Value ($000) $1,224 Avg Close $1066.63 Range $1025.25 - $1104.14

Q2 2019

Shares 926 Value ($000) $946 Avg Close $961.99 Range $906.22 - $1052.17

Q1 2019

Shares 997 Value ($000) $923 Avg Close $905.92 Range $850.75 - $961.49

Q4 2018

Shares 699 Value ($000) $599 Avg Close $891.29 Range $832.88 - $942.35

Q3 2018

Shares 849 Value ($000) $794 Avg Close $926.90 Range $895.01 - $980.89

Q2 2018

Shares 841 Value ($000) $763 Avg Close $880.88 Range $804.40 - $933.70

Q1 2018

Shares 911 Value ($000) $749 Avg Close $825.48 Range $786.23 - $858.09

Q4 2017

Shares 1,136 Value ($000) $967 Avg Close $874.10 Range $841.33 - $903.26

Q3 2017

Shares 1,042 Value ($000) $892 Avg Close $859.82 Range $838.65 - $888.00

Q2 2017

Shares 965 Value ($000) $838 Avg Close $867.55 Range $845.41 - $900.05

Q1 2017

Shares 2,109 Value ($000) $1,856 Avg Close $895.74 Range $834.20 - $948.94

Q4 2016

Shares 3,922 Value ($000) $3,282 Avg Close $838.09 Range $815.04 - $874.69

Q3 2016

Shares 2,726 Value ($000) $2,262 Avg Close $824.01 Range $804.44 - $852.58

Q2 2016

Shares 2,727 Value ($000) $2,296 Avg Close $815.85 Range $786.33 - $845.37

Q1 2016

Shares 778 Value ($000) $625 Avg Close $748.05 Range $689.31 - $809.99

Q4 2015

Shares 3,098 Value ($000) $2,252 Avg Close $765.83 Range $721.00 - $808.00

Q3 2015

Shares 2,383 Value ($000) $1,781 Avg Close $719.51 Range $645.00 - $778.19

Q2 2015

Shares 4,054 Value ($000) $2,655 Avg Close $663.32 Range $635.00 - $704.50

Q1 2015

Shares 3,938 Value ($000) $2,696 Avg Close $659.70 Range $618.00 - $696.48

Q4 2014

Shares 3,215 Value ($000) $2,026 Avg Close $635.98 Range $610.00 - $682.87

Q3 2014

Shares 3,050 Value ($000) $1,921 Avg Close $624.10 Range $599.35 - $645.00

Q2 2014

Shares 3,001 Value ($000) $1,826 Avg Close $595.51 Range $583.51 - $608.63

Q1 2014

Shares 2,884 Value ($000) $1,730 Avg Close $583.55 Range $557.26 - $603.88

Q4 2013

Shares 3,013 Value ($000) $1,817 Avg Close $589.37 Range $566.30 - $606.94

Q3 2013

Shares 3,059 Value ($000) $1,736 Avg Close $580.72 Range $555.51 - $615.88

Q2 2013

Shares 3,106 Value ($000) $1,786 Avg Close $583.58 Range $561.79 - $615.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	431	$896	$1955.46	$1648.00 - $2143.25
Q3 2025	432	$722	$1784.36	$1659.17 - $1880.11
Q2 2025	432	$776	$1778.53	$1678.87 - $1937.23
Q1 2025	416	$801	$1882.39	$1803.96 - $1993.86
Q4 2024	416	$809	$1889.39	$1708.50 - $2023.00
Q3 2024	425	$723	$1743.65	$1666.22 - $1847.78
Q2 2024	429	$795	$1768.70	$1665.71 - $1899.21
Q1 2024	429	$790	$1676.26	$1475.00 - $1849.99
Q4 2023	430	$652	$1486.19	$1401.01 - $1562.63
Q3 2023	430	$688	$1535.39	$1370.75 - $1617.00
Q2 2023	448	$635	$1407.80	$1319.05 - $1540.09
Q1 2023	434	$668	$1434.16	$1312.00 - $1560.21
Q4 2022	430	$616	$1355.05	$1276.05 - $1435.45
Q3 2022	412	$568	$1293.71	$1172.00 - $1393.48
Q2 2022	535	$685	$1161.60	$1030.38 - $1291.50
Q1 2022	425	$470	$1046.91	$982.60 - $1141.97
Q4 2021	433	$440	$1056.38	$978.51 - $1137.50
Q3 2021	439	$489	$1116.81	$1056.96 - $1179.20
Q2 2021	442	$509	$1167.46	$1100.61 - $1243.00
Q1 2021	565	$651	$1118.45	$994.91 - $1267.52
Q4 2020	786	$832	$940.82	$778.11 - $1024.02
Q3 2020	706	$594	$864.63	$752.10 - $961.96
Q2 2020	355	$298	$901.27	$813.24 - $1012.83
Q1 2020	364	$347	$1035.04	$629.21 - $1168.21
Q4 2019	1,130	$1,260	$1090.77	$1054.00 - $1131.50
Q3 2019	1,134	$1,224	$1066.63	$1025.25 - $1104.14
Q2 2019	926	$946	$961.99	$906.22 - $1052.17
Q1 2019	997	$923	$905.92	$850.75 - $961.49
Q4 2018	699	$599	$891.29	$832.88 - $942.35
Q3 2018	849	$794	$926.90	$895.01 - $980.89
Q2 2018	841	$763	$880.88	$804.40 - $933.70
Q1 2018	911	$749	$825.48	$786.23 - $858.09
Q4 2017	1,136	$967	$874.10	$841.33 - $903.26
Q3 2017	1,042	$892	$859.82	$838.65 - $888.00
Q2 2017	965	$838	$867.55	$845.41 - $900.05
Q1 2017	2,109	$1,856	$895.74	$834.20 - $948.94
Q4 2016	3,922	$3,282	$838.09	$815.04 - $874.69
Q3 2016	2,726	$2,262	$824.01	$804.44 - $852.58
Q2 2016	2,727	$2,296	$815.85	$786.33 - $845.37
Q1 2016	778	$625	$748.05	$689.31 - $809.99
Q4 2015	3,098	$2,252	$765.83	$721.00 - $808.00
Q3 2015	2,383	$1,781	$719.51	$645.00 - $778.19
Q2 2015	4,054	$2,655	$663.32	$635.00 - $704.50
Q1 2015	3,938	$2,696	$659.70	$618.00 - $696.48
Q4 2014	3,215	$2,026	$635.98	$610.00 - $682.87
Q3 2014	3,050	$1,921	$624.10	$599.35 - $645.00
Q2 2014	3,001	$1,826	$595.51	$583.51 - $608.63
Q1 2014	2,884	$1,730	$583.55	$557.26 - $603.88
Q4 2013	3,013	$1,817	$589.37	$566.30 - $606.94
Q3 2013	3,059	$1,736	$580.72	$555.51 - $615.88
Q2 2013	3,106	$1,786	$583.58	$561.79 - $615.00