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WHITE MOUNTAINS INSURANCE GROUP LTD

WTM Net selling
CIK 0000776867 #1353 in the set updated 18 Sep 2026
Bought (120 mo)
$2.74M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$36.69M
$0.00 on a plan · $1.74M straight out of an exercise
Sold at will
$34.95M
72 of 73 sales
Net
−$33.95M
−$32.22M against sales at will

By person

28 insiders · 124 transactions
47.1×

G. Manning Rountree holds 47.1 times base salary in stock. $28.31M of shares against $600.00K in salary for 2025.

Salary from the company's own proxy. The shares are what G. Manning Rountree last reported holding, valued at $2,050.00, the price Common Shares was last bought or sold at on the open market here, on 19 Dec 2025.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
DAVIS MORGAN W
Director
$795.49K (3)
$11.30M (27)
−$10.51M
7,739
0.3243%
$15.86M
−64.2%
Rountree George Manning
Chief Executive Officer
—
$10.25M (1)
−$10.25M
13,809
0.5786%
$28.31M
+120.2%
SEELIG ROBERT LAWRENCE
EVP & General Counsel
—
$6.59M (16)
−$6.59M
17,857
0.7482%
$36.61M
−5.4%
Brouillette Yves
Director
—
$3.05M (12)
−$3.05M
4,121
0.1727%
$8.45M
−34.0%
SMITH LOWNDES ANDREW
Director
—
$2.35M (8)
−$2.35M
1,102
0.0462%
$2.26M
−62.0%
BARRETTE RAYMOND JOSEPH RENE
Chief Executive Officer
—
$1.74M (2) scheduled
−$1.74M
7,999
0.3351%
$16.40M
+11.0%
Hicks Weston M
Director
$1.48M (5)
—
+$1.48M
2,936
0.1230%
$6.02M
+193.6%
Tanner David Allen
Director
$459.22K (2)
—
+$459.22K
2,012
0.0843%
$4.12M
—
PALMER JESS BRIAN
Chief Accounting Officer
—
$438.14K (1)
−$438.14K
1,703
0.0714%
$3.49M
−13.1%
Gelston Philip A
Director
—
$338.00K (1)
−$338.00K
1,703
0.0714%
$3.49M
—
Carlson Peter M
Director
—
$280.00K (1)
−$280.00K
852
0.0357%
$1.75M
—
Hildreth Michaela
MD & Chief Accounting Officer
—
$264.28K (2)
−$264.28K
1,825
0.0765%
$3.74M
+339.8%
Frinquelli Angelo Michael
Director
—
$87.50K (1)
−$87.50K
1,641
0.0688%
$3.36M
+10.1%
CAMPBELL REID TARLTON
Director
—
— (1)
$0.00
10,575
0.4431%
$21.68M
−17.5%
Linker David
Chief Investment Officer
—
—
—
4,725
0.1980%
$9.69M
+31.8%
Caffrey Liam P
Chief Executive Officer
—
—
—
3,650
0.1529%
$7.48M
—
Bazos Frank R
EVP and Head of M&A
—
—
—
3,600
0.1508%
$7.38M
—
HOLIDAY EDITH E
Director
—
—
—
2,827
0.1184%
$5.80M
+52.6%
Harrison Giles E
President
—
—
—
2,675
0.1121%
$5.48M
—
CHOKSI MARY C
Director
—
—
—
1,993
0.0835%
$4.09M
—
Tolman Gary Charles
Director
—
—
—
1,822
0.0763%
$3.74M
+37.8%
Papamichael Michael A
Chief Financial Officer
—
—
—
1,200
0.0503%
$2.46M
+44.4%
Dillon Margaret
Director
—
—
—
1,080
0.0453%
$2.21M
—
SHANK SUZANNE F.
Director
—
—
—
1,006
0.0421%
$2.06M
—
Yi Steven
Director
—
—
—
525
0.0220%
$1.08M
+1,650%
Chu John
Director
—
—
—
335
0.0140%
$686.75K
+67.5%
Klar Stephen
Director
—
—
—
113
0.0047%
$231.65K
—
FOY DAVID THOMAS
Chief Financial Officer
—
—
—
0
0.0000%
$0.00
−100.0%

Individual transactions

124
Insider
Date
Role
Action
Shares
Price
Amount
Rountree George Manning
19 Dec 2025
Chief Executive Officer
Sell
5,000
$2,050.00
$10.25M
CAMPBELL REID TARLTON
19 Dec 2025
Director
Sell
5,000
$0.00
$0.00
Gelston Philip A
16 Dec 2025
Director
Sell
165
$2,048.51
$338.00K
Hicks Weston M
17 Nov 2023
Director
Buy
238
$1,484.96
$353.42K
Hicks Weston M
17 Nov 2023
Director
Buy
11
$1,483.43
$16.32K
Hicks Weston M
17 Nov 2023
Director
Buy
579
$1,479.88
$856.85K
Hicks Weston M
17 Nov 2023
Director
Buy
120
$1,476.74
$177.21K
Hicks Weston M
17 Nov 2023
Director
Buy
52
$1,476.15
$76.76K
Hildreth Michaela
22 Dec 2022
MD & Chief Accounting Officer
Sell
100
$1,371.84
$137.18K
DAVIS MORGAN W
20 Sep 2022
Director
Sell
945
$1,400.00
$1.32M
Carlson Peter M
20 Sep 2022
Director
Sell
200
$1,400.00
$280.00K
Hildreth Michaela
31 May 2022
MD & Chief Accounting Officer
Sell
100
$1,270.94
$127.09K
DAVIS MORGAN W
9 Feb 2021
Director
Sell indirect
337
$1,117.00
$376.43K
DAVIS MORGAN W
9 Feb 2021
Director
Sell indirect
1,163
$1,138.00
$1.32M
DAVIS MORGAN W
24 Mar 2020
Director
Buy
50
$785.00
$39.25K
DAVIS MORGAN W
24 Mar 2020
Director
Buy
610
$782.60
$477.39K
DAVIS MORGAN W
24 Mar 2020
Director
Buy
390
$715.00
$278.85K
SMITH LOWNDES ANDREW
10 Dec 2019
Director
Sell
200
$1,105.76
$221.15K
SMITH LOWNDES ANDREW
8 Aug 2019
Director
Sell
721
$1,085.51
$782.65K
SMITH LOWNDES ANDREW
8 Aug 2019
Director
Sell
279
$1,088.01
$303.55K
SEELIG ROBERT LAWRENCE
24 Jun 2019
EVP & General Counsel
Sell
10
$1,052.31
$10.52K
SEELIG ROBERT LAWRENCE
24 Jun 2019
EVP & General Counsel
Sell
103
$1,049.00
$108.05K
SEELIG ROBERT LAWRENCE
24 Jun 2019
EVP & General Counsel
Sell
70
$1,048.14
$73.37K
SEELIG ROBERT LAWRENCE
24 Jun 2019
EVP & General Counsel
Sell
657
$1,046.93
$687.83K
SEELIG ROBERT LAWRENCE
24 Jun 2019
EVP & General Counsel
Sell
160
$1,039.50
$166.32K
PALMER JESS BRIAN
18 Jun 2019
Chief Accounting Officer
Sell
431
$1,016.57
$438.14K
SMITH LOWNDES ANDREW
10 Jun 2019
Director
Sell
300
$1,004.24
$301.27K
SMITH LOWNDES ANDREW
10 Jun 2019
Director
Sell
200
$1,005.40
$201.08K
SEELIG ROBERT LAWRENCE
9 May 2019
EVP & General Counsel
Sell
60
$975.00
$58.50K
SEELIG ROBERT LAWRENCE
9 May 2019
EVP & General Counsel
Sell
860
$977.34
$840.51K
SEELIG ROBERT LAWRENCE
9 May 2019
EVP & General Counsel
Sell
80
$979.62
$78.37K
SEELIG ROBERT LAWRENCE
9 May 2019
EVP & General Counsel
Sell
83
$985.20
$81.77K
DAVIS MORGAN W
25 Apr 2019
Director
Sell indirect
554
$928.40
$514.33K
DAVIS MORGAN W
23 Apr 2019
Director
Sell indirect
696
$910.11
$633.44K
DAVIS MORGAN W
16 Apr 2019
Director
Sell indirect
354
$912.90
$323.17K
DAVIS MORGAN W
12 Apr 2019
Director
Sell indirect
585
$916.95
$536.42K
DAVIS MORGAN W
10 Apr 2019
Director
Sell indirect
412
$914.99
$376.98K
DAVIS MORGAN W
4 Apr 2019
Director
Sell indirect
910
$923.65
$840.52K
DAVIS MORGAN W
2 Apr 2019
Director
Sell indirect
362
$925.00
$334.85K
DAVIS MORGAN W
1 Apr 2019
Director
Sell indirect
852
$924.15
$787.38K
DAVIS MORGAN W
27 Mar 2019
Director
Sell indirect
601
$922.66
$554.52K
SMITH LOWNDES ANDREW
26 Mar 2019
Director
Sell
400
$916.70
$366.68K
Tanner David Allen
26 Mar 2019
Director
Buy
495
$918.46
$454.64K
Tanner David Allen
26 Mar 2019
Director
Buy
5
$917.05
$4.59K
DAVIS MORGAN W
22 Mar 2019
Director
Sell indirect
709
$914.00
$648.03K
DAVIS MORGAN W
19 Mar 2019
Director
Sell indirect
954
$925.21
$882.65K
DAVIS MORGAN W
13 Mar 2019
Director
Sell indirect
631
$907.94
$572.91K
Brouillette Yves
12 Mar 2019
Director
Sell
424
$903.19
$382.95K
Brouillette Yves
12 Mar 2019
Director
Sell
283
$904.15
$255.87K
Brouillette Yves
12 Mar 2019
Director
Sell
400
$905.00
$362.00K
Brouillette Yves
12 Mar 2019
Director
Sell
161
$908.00
$146.19K
Brouillette Yves
11 Mar 2019
Director
Sell
900
$907.48
$816.73K
Brouillette Yves
11 Mar 2019
Director
Sell
574
$910.05
$522.37K
Brouillette Yves
11 Mar 2019
Director
Sell
14
$911.06
$12.75K
Brouillette Yves
11 Mar 2019
Director
Sell
12
$912.40
$10.95K
Brouillette Yves
11 Mar 2019
Director
Sell
61
$915.00
$55.82K
Brouillette Yves
11 Mar 2019
Director
Sell
192
$916.18
$175.91K
Brouillette Yves
11 Mar 2019
Director
Sell
211
$917.00
$193.49K
Brouillette Yves
11 Mar 2019
Director
Sell
128
$918.61
$117.58K
SEELIG ROBERT LAWRENCE
6 Mar 2019
EVP & General Counsel
Sell
1,000
$958.49
$958.49K
SEELIG ROBERT LAWRENCE
5 Mar 2019
EVP & General Counsel
Sell
846
$949.98
$803.68K
SEELIG ROBERT LAWRENCE
5 Mar 2019
EVP & General Counsel
Sell
9
$950.11
$8.55K
SEELIG ROBERT LAWRENCE
5 Mar 2019
EVP & General Counsel
Sell
50
$950.25
$47.51K
SEELIG ROBERT LAWRENCE
5 Mar 2019
EVP & General Counsel
Sell
82
$951.00
$77.98K
SEELIG ROBERT LAWRENCE
5 Mar 2019
EVP & General Counsel
Sell
13
$951.10
$12.36K
SMITH LOWNDES ANDREW
20 Dec 2018
Director
Sell
100
$845.39
$84.54K
SMITH LOWNDES ANDREW
20 Dec 2018
Director
Sell
100
$846.30
$84.63K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$892.06
$89.21K
DAVIS MORGAN W
15 May 2018
Director
Sell
5
$893.17
$4.47K
DAVIS MORGAN W
15 May 2018
Director
Sell
95
$893.18
$84.85K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$893.10
$89.31K
DAVIS MORGAN W
15 May 2018
Director
Sell
200
$891.26
$178.25K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$891.25
$89.13K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$889.20
$88.92K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$889.42
$88.94K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$888.22
$88.82K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$888.11
$88.81K
DAVIS MORGAN W
15 May 2018
Director
Sell
100
$888.30
$88.83K
SEELIG ROBERT LAWRENCE
7 May 2018
EVP & General Counsel
Sell
2,946
$875.00
$2.58M
DAVIS MORGAN W
27 Dec 2017
Director
Sell
350
$846.21
$296.17K
Frinquelli Angelo Michael
20 Nov 2017
Director
Sell indirect
100
$875.00
$87.50K
BARRETTE RAYMOND JOSEPH RENE
19 Jan 2017
Chief Executive Officer
Exercised, kept
4,000
$742.00
$2.97M
BARRETTE RAYMOND JOSEPH RENE
18 Jan 2017
Chief Executive Officer
Exercised, kept
5,000
$742.00
$3.71M
BARRETTE RAYMOND JOSEPH RENE
17 Jan 2017
Chief Executive Officer
Exercised, kept
4,000
$742.00
$2.97M
BARRETTE RAYMOND JOSEPH RENE
13 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
12 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
11 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
10 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
9 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
6 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
5 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
4 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
3 Jan 2017
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
29 Dec 2016
Chief Executive Officer
Exercised, kept
1,000
$742.00
$742.00K
BARRETTE RAYMOND JOSEPH RENE
28 Dec 2016
Chief Executive Officer
Exercised, kept
1,000
$742.00
$742.00K
BARRETTE RAYMOND JOSEPH RENE
27 Dec 2016
Chief Executive Officer
Exercised, kept
1,000
$742.00
$742.00K
BARRETTE RAYMOND JOSEPH RENE
23 Dec 2016
Chief Executive Officer
Exercised, kept
2,000
$742.00
$1.48M
BARRETTE RAYMOND JOSEPH RENE
22 Dec 2016
Chief Executive Officer
Exercised, kept
1,000
$742.00
$742.00K
BARRETTE RAYMOND JOSEPH RENE
21 Dec 2016
Chief Executive Officer
Exercised, kept
1,000
$742.00
$742.00K
BARRETTE RAYMOND JOSEPH RENE
20 Dec 2016
Chief Executive Officer
Sell indirect
1
$860.00
$860.00
BARRETTE RAYMOND JOSEPH RENE
19 Dec 2016
Chief Executive Officer
Exercised, kept
2,000
$742.00
$1.48M
BARRETTE RAYMOND JOSEPH RENE
16 Dec 2016
Chief Executive Officer
Exercised, kept
2,000
$742.00
$1.48M
BARRETTE RAYMOND JOSEPH RENE
15 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
14 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
13 Dec 2016
Chief Executive Officer
Exercised, kept
4,000
$742.00
$2.97M
BARRETTE RAYMOND JOSEPH RENE
12 Dec 2016
Chief Executive Officer
Sold after exercise indirect
2,000
$867.89
$1.74M
BARRETTE RAYMOND JOSEPH RENE
9 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
8 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
7 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
6 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
5 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
2 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
1 Dec 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
30 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
29 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
28 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
25 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
23 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
22 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
21 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
18 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
17 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
16 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M
BARRETTE RAYMOND JOSEPH RENE
15 Nov 2016
Chief Executive Officer
Exercised, kept
3,000
$742.00
$2.23M

What was left out

Form 4 filings counted 253
Amendments (4/A) skipped 3
Filings about a different issuer 5
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 1
Sales at will 72
Transactions with no price 0
Shares from compensation/vesting 355,346
Sales filed before the plan box existed 69
History held since 17 Nov 2016