Company · CIK 0000776867 · SIC 6331 — Fire, Marine & Casualty Insurance · NYSE
WHITE MOUNTAINS INSURANCE GROUP LTD · WTM
Insider activity reported against this company. All insider holders · Files at: OB, SYA. On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 31, 2026 GForm 4 → | Aug 31, 5:04 pm EDT | David Allen TannerDirector | 2 | — | — | 2,012 | — | |
| Aug 26, 2026 AForm 4 → | Aug 27, 3:46 pm EDT | Stephen KlarDirector | 113 | — | — | 113 | — | |
| Mar 11, 2019 SForm 4 → | Mar 13, 4:06 pm EDT | Yves BrouilletteDirector | 3,360 | $908.51 | $3,052,610 | 3,717 | −47.5% | plan? |
| Mar 5, 2019 SForm 4 → | Mar 7, 4:22 pm EST | Robert Lawrence SeeligEVP & General Counsel | 2,000 | $954.29 | $1,908,583 | 13,606 | −12.8% | plan? |
| Feb 28, 2019 AForm 4 → | Mar 4, 10:55 am EST | George Manning RountreeChief Executive Officer, Director | 3,000 | — | — | 9,000 | — | plan? |
| Feb 28, 2019 AForm 4 → | Mar 4, 10:52 am EST | Reid Tarlton CampbellEVP & Chief Financial Officer | 2,000 | — | — | 6,250 | — | plan? |
| Feb 28, 2019 AForm 4 → | Mar 4, 10:50 am EST | Robert Lawrence SeeligEVP & General Counsel | 1,000 | — | — | 4,800 | — | plan? |
| Feb 28, 2019 AForm 4 → | Mar 4, 10:49 am EST | Jess Brian PalmerChief Accounting Officer | 500 | — | — | 1,560 | — | plan? |
| Feb 27, 2019 AForm 4 → | Mar 1, 9:45 am EST | Peter M CarlsonDirector | 63 | — | — | 63 | — | plan? |
| Jan 1, 2019 FForm 4 → | Jan 2, 3:59 pm EST | George Manning RountreeChief Executive Officer, Director | 1,188 | $857.69 | $1,018,936 | 8,472 | — | plan? |
| Jan 1, 2019 FForm 4 → | Jan 2, 3:56 pm EST | Reid Tarlton CampbellEVP & Chief Financial Officer | 1,050 | $857.69 | $900,575 | 9,750 | — | plan? |
| Jan 1, 2019 FForm 4 → | Jan 2, 3:55 pm EST | Robert Lawrence SeeligEVP & General Counsel | 794 | $857.69 | $681,006 | 15,606 | — | plan? |
| Jan 1, 2019 FForm 4 → | Jan 2, 3:53 pm EST | Jess Brian PalmerChief Accounting Officer | 256 | $857.69 | $219,569 | 1,930 | — | plan? |
| Dec 20, 2018 SForm 4 → | Dec 21, 8:43 am EST | Lowndes Andrew SmithDirector | 200 | $845.85 | $169,169 | 2,952 | −6.35% | plan? |
| Nov 29, 2018 GForm 4 → | Nov 30, 5:28 pm EST | Morgan W DavisDirector | 330 | — | — | 17,259 | — | plan? |
| Sep 20, 2018 GForm 4 → | Sep 21, 6:17 pm EDT | Robert Lawrence SeeligEVP & General Counsel | 50 | — | — | 14,400 | — | plan? |
| Aug 23, 2018 AForm 4 → | Aug 27, 1:19 pm EDT | David Allen TannerDirector | 188 | — | — | 188 | — | plan? |
| Aug 17, 2018 GForm 4 → | Aug 20, 1:49 pm EDT | Robert Lawrence SeeligEVP & General Counsel | 45 | — | — | 14,450 | — | plan? |
| Jun 6, 2018 GForm 4 → | Jun 14, 6:51 am EDT | Jess Brian PalmerChief Accounting Officer | 28 | — | — | 1,626 | — | plan? late |
| May 24, 2018 AForm 4 → | May 25, 12:44 pm EDT | Gary Charles TolmanDirector | 250 | — | — | 1,822 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:35 pm EDT | Lowndes Andrew SmithDirector | 250 | — | — | 3,152 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:33 pm EDT | Edith E HolidayDirector | 250 | — | — | 2,352 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:31 pm EDT | Philip A GelstonDirector | 250 | — | — | 313 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:29 pm EDT | Morgan W DavisDirector | 350 | — | — | 17,589 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:26 pm EDT | Mary C ChoksiDirector | 250 | — | — | 438 | — | plan? |
| May 24, 2018 AForm 4 → | May 25, 12:23 pm EDT | Yves BrouilletteDirector | 415 | — | — | 7,077 | — | plan? |
| May 15, 2018 SForm 4 → | May 16, 9:18 am EDT | Morgan W DavisDirector | 1,100 | $890.49 | $979,536 | 17,239 | −6.00% | plan? |
| May 7, 2018 SForm 4/A → | May 14, 5:30 pm EDT | Robert Lawrence SeeligEVP & General Counsel | 2,952 | $875.00 | $2,583,000 | 14,494 | −16.9% | plan? |
| May 7, 2018 SForm 4 → | May 9, 5:23 pm EDT | Robert Lawrence SeeligEVP & General Counsel | 2,946 | $875.00 | $2,577,750 | 14,500 | −16.9% | plan? amended |
| May 4, 2018 GForm 4 → | May 9, 5:23 pm EDT | Robert Lawrence SeeligEVP & General Counsel | 50 | — | — | 17,446 | — | plan? late amended |
| Apr 6, 2018 GForm 4 → | Apr 9, 8:40 am EDT | Morgan W DavisDirector | 2,450 | — | — | 18,339 | — | plan? |
| Mar 29, 2018 GForm 4 → | Mar 30, 5:52 pm EDT | Reid Tarlton CampbellEVP & Chief Financial Officer | 50 | — | — | 8,550 | — | plan? |
| Mar 1, 2018 AForm 4 → | Mar 5, 4:46 pm EST | Philip A GelstonDirector | 63 | — | — | 63 | — | plan? |
| Mar 1, 2018 AForm 4 → | Mar 5, 4:33 pm EST | George Manning RountreeChief Executive Officer, Director | 3,200 | — | — | 9,000 | — | plan? |
| Mar 1, 2018 AForm 4 → | Mar 5, 4:23 pm EST | Reid Tarlton CampbellEVP & Chief Financial Officer | 2,000 | — | — | 6,500 | — | plan? |
| Mar 1, 2018 AForm 4 → | Mar 5, 4:21 pm EST | Robert Lawrence SeeligEVP & General Counsel | 1,800 | — | — | 5,800 | — | plan? |
| Mar 1, 2018 AForm 4 → | Mar 5, 4:18 pm EST | Jess Brian PalmerChief Accounting Officer | 500 | — | — | 1,620 | — | plan? |
| Jan 1, 2018 FForm 4 → | Jan 3, 8:13 pm EST | Jess Brian PalmerChief Accounting Officer | 318 | $851.28 | $270,707 | 1,654 | — | plan? |
| Jan 1, 2018 FForm 4 → | Jan 3, 8:08 pm EST | Reid Tarlton CampbellEVP & Chief Financial Officer | 1,275 | $851.28 | $1,085,382 | 8,600 | — | plan? |
| Jan 1, 2018 FForm 4 → | Jan 3, 8:06 pm EST | George Manning RountreeChief Executive Officer | 1,187 | $851.28 | $1,010,469 | 6,660 | — | plan? |
| Jan 1, 2018 FForm 4 → | Jan 3, 8:04 pm EST | Robert Lawrence SeeligEVP & General Counsel | 990 | $851.28 | $842,767 | 17,496 | — | plan? |
| Dec 27, 2017 SForm 4 → | Dec 28, 12:13 pm EST | Morgan W DavisDirector | 350 | $846.21 | $296,174 | 20,790 | −1.66% | plan? |
| Dec 26, 2017 GForm 4 → | Dec 27, 5:53 pm EST | Reid Tarlton CampbellChief Financial Officer | 100 | — | — | 7,125 | — | plan? |
| Dec 4, 2017 GForm 4 → | Dec 4, 4:48 pm EST | Morgan W DavisDirector | 500 | — | — | 21,140 | — | plan? |
| Nov 20, 2017 SForm 4 → | Nov 22, 10:07 am EST | Angelo Michael FrinquelliDirector | 100 | $875.00 | $87,500 | 0 | −100% | plan? |
| Aug 24, 2017 AForm 4 → | Aug 28, 6:02 pm EDT | Mary C ChoksiDirector | 188 | $864.18 | $162,466 | 188 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:32 pm EDT | Reid Tarlton CampbellChief Financial Officer | 750 | — | — | 7,250 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:28 pm EDT | Yves BrouilletteDirector | 421 | — | — | 6,662 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:26 pm EDT | Gary Charles TolmanDirector | 250 | — | — | 1,572 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:24 pm EDT | Angelo Michael FrinquelliDirector | 250 | — | — | 1,641 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:20 pm EDT | Edith E HolidayDirector | 250 | — | — | 2,102 | — | plan? |
| May 25, 2017 AForm 4 → | May 26, 4:05 pm EDT | Morgan W DavisDirector | 350 | — | — | 21,640 | — | plan? |
| May 24, 2017 FForm 4 → | May 26, 4:33 pm EDT | David Thomas FoyChief Financial Officer | 2,888 | $870.00 | $2,512,560 | 0 | — | plan? |
| Mar 1, 2017 AForm 4 → | Mar 3, 4:24 pm EST | David LinkerChief Investment Officer | 1,500 | — | — | 4,725 | — | plan? |
| Mar 1, 2017 AForm 4 → | Mar 3, 4:23 pm EST | Jess Brian PalmerChief Accounting Officer | 560 | — | — | 1,820 | — | plan? |
| Mar 1, 2017 AForm 4 → | Mar 3, 4:21 pm EST | Robert Lawrence SeeligManaging Dir & General Counsel | 2,000 | — | — | 6,500 | — | plan? |
| Mar 1, 2017 AForm 4 → | Mar 3, 4:20 pm EST | Reid Tarlton CampbellManaging Director | 2,000 | — | — | 6,500 | — | plan? |
| Mar 1, 2017 AForm 4 → | Mar 3, 4:19 pm EST | George Manning RountreeChief Executive Officer, Director | 2,900 | — | — | 8,800 | — | plan? |
| Mar 1, 2017 DForm 4 → | Mar 3, 4:07 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 5,000 | — | — | 0 | — | plan? |
| Jan 17, 2017 FMForm 4 → | Jan 19, 7:35 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 24,196 | $797.26 | $19,290,408 | 45,988 | — | plan? |
| Jan 13, 2017 GForm 4 → | Jan 19, 7:33 pm EST | Jess Brian PalmerChief Accounting Officer | 159 | — | — | 1,272 | — | plan? late |
| Jan 11, 2017 FMForm 4 → | Jan 13, 7:40 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,926 | $788.98 | $13,354,242 | 43,720 | — | plan? |
| Jan 6, 2017 FMForm 4 → | Jan 10, 7:38 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,884 | $790.95 | $13,354,439 | 42,646 | — | plan? |
| Jan 3, 2017 FMForm 4 → | Jan 5, 8:13 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,852 | $792.47 | $13,354,763 | 41,030 | — | plan? |
| Jan 1, 2017 FForm 4 → | Jan 4, 4:07 pm EST | David LinkerChief Investment Officer | 360 | $836.05 | $300,978 | 1,428 | — | plan? |
| Jan 1, 2017 FForm 4 → | Jan 4, 4:06 pm EST | Robert Lawrence SeeligManaging Dir & General Counsel | 899 | $836.05 | $751,609 | 15,986 | — | plan? |
| Jan 1, 2017 FForm 4 → | Jan 4, 4:05 pm EST | Reid Tarlton CampbellManaging Director | 1,100 | $836.05 | $919,655 | 7,225 | — | plan? |
| Jan 1, 2017 FForm 4 → | Jan 4, 4:04 pm EST | George Manning RountreeManaging Director | 950 | $836.05 | $794,248 | 4,847 | — | plan? |
| Dec 27, 2016 FGMForm 4 → | Dec 29, 8:14 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 8,147 | $788.15 | $4,450,702 | 38,882 | — | plan? |
| Dec 21, 2016 FGMForm 4 → | Dec 23, 8:59 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,473 | $794.12 | $5,934,429 | 41,029 | — | plan? |
| Dec 20, 2016 SForm 4 → | Dec 20, 8:50 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 1 | $860.00 | $860 | 7,999 | −0.01% | plan? |
| Dec 16, 2016 FGMForm 4 → | Dec 20, 8:50 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 8,004 | $790.93 | $5,935,135 | 42,502 | — | plan? |
| Dec 13, 2016 FMForm 4 → | Dec 15, 8:50 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 18,710 | $793.06 | $14,838,102 | 42,506 | — | plan? |
| Dec 12, 2016 SForm 4 → | Dec 12, 9:00 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 2,000 | $867.89 | $1,735,780 | 8,000 | −20.0% | plan? |
| Dec 8, 2016 FMForm 4 → | Dec 12, 9:00 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 20,472 | $797.32 | $16,322,738 | 41,216 | — | plan? |
| Dec 6, 2016 GForm 4 → | Dec 7, 4:56 pm EST | Morgan W DavisDirector | 350 | — | — | 21,290 | — | plan? |
| Dec 5, 2016 FMForm 4 → | Dec 7, 4:40 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,888 | $790.83 | $13,355,609 | 39,688 | — | plan? |
| Nov 30, 2016 FMForm 4 → | Dec 2, 8:18 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,882 | $791.05 | $13,354,517 | 38,576 | — | plan? |
| Nov 29, 2016 FMForm 4 → | Nov 29, 4:57 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 5,604 | $794.42 | $4,451,925 | 37,458 | — | plan? |
| Nov 23, 2016 FGMForm 4 → | Nov 28, 6:46 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 19,172 | $790.48 | $13,354,378 | 37,062 | — | plan? |
| Nov 18, 2016 FMForm 4 → | Nov 22, 6:32 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 17,019 | $784.69 | $13,354,562 | 35,956 | — | plan? |
| Nov 15, 2016 FMForm 4 → | Nov 17, 4:48 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 16,977 | $786.63 | $13,354,631 | 34,975 | — | plan? |
| Aug 25, 2016 AForm 4 → | Aug 25, 4:38 pm EDT | David Thomas FoyChief Financial Officer | 500 | — | — | 8,900 | — | plan? |
| Aug 25, 2016 AForm 4 → | Aug 25, 4:36 pm EDT | George Manning RountreePresident | 3,650 | — | — | 8,150 | — | plan? |
| Aug 10, 2016 GForm 4 → | Aug 10, 4:02 pm EDT | Reid Tarlton CampbellManaging Director | 75 | — | — | 6,075 | — | plan? |
| Aug 4, 2016 SForm 4 → | Aug 5, 4:20 pm EDT | Jess Brian PalmerChief Accounting Officer | 1,370 | $820.89 | $1,124,617 | 1,000 | −57.8% | plan? |
| May 25, 2016 AForm 4 → | May 26, 2017, 4:30 pm EDT | Lowndes Andrew SmithDirector | 250 | — | — | 2,902 | — | plan? late |
| May 25, 2016 AForm 4 → | May 27, 2:29 pm EDT | Lowndes Andrew SmithDirector | 250 | — | — | 2,652 | — | plan? |
| May 25, 2016 AForm 4 → | May 27, 2:28 pm EDT | Yves BrouilletteDirector | 435 | — | — | 6,241 | — | plan? |
| May 25, 2016 AForm 4 → | May 27, 2:26 pm EDT | Gary Charles TolmanDirector | 250 | — | — | 1,322 | — | plan? |
| May 25, 2016 AForm 4 → | May 27, 2:25 pm EDT | Angelo Michael FrinquelliDirector | 250 | — | — | 1,391 | — | plan? |
| May 25, 2016 AForm 4 → | May 27, 2:06 pm EDT | Edith E HolidayDirector | 250 | — | — | 1,852 | — | plan? |
| May 25, 2016 AForm 4 → | May 27, 2:04 pm EDT | Morgan W DavisDirector | 300 | — | — | 21,640 | — | plan? |
| May 5, 2016 MForm 4 → | May 6, 4:10 pm EDT | Raymond Joseph Rene BarretteChief Executive Officer, Director | 5,000 | $742.00 | $3,710,000 | 31,452 | — | plan? |
| Apr 28, 2016 PForm 4 → | Apr 29, 4:48 pm EDT | Raymond Joseph Rene BarretteChief Executive Officer, Director | 100 | $825.00 | $82,500 | 26,452 | +0.38% | plan? |
| Apr 4, 2016 AGForm 4 → | Apr 26, 5:07 pm EDT | Raymond Joseph Rene BarretteChief Executive Officer, Director | 7,035 | — | — | 26,352 | — | plan? late |
| Mar 3, 2016 FIForm 4 → | Jan 4, 2017, 4:08 pm EST | Jess Brian PalmerChief Accounting Officer | 256 | $828.59 | $212,118 | 1,431 | — | plan? late |
| Feb 25, 2016 AForm 4 → | Feb 29, 4:34 pm EST | David LinkerChief Investment Officer | 1,500 | — | — | 4,250 | — | plan? |
| Feb 25, 2016 AForm 4 → | Feb 29, 4:28 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 5,000 | — | — | 5,000 | — | plan? |
| Feb 25, 2016 AForm 4 → | Feb 29, 4:25 pm EST | Robert Lawrence SeeligManaging Dir & General Counsel | 2,000 | — | — | 6,625 | — | plan? |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Jan 17, 2017 MForm 4 → | Jan 19, 7:35 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 13,000 | — | — | 0 | — | |
| Jan 11, 2017 MForm 4 → | Jan 13, 7:40 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 13,000 | — | |
| Jan 6, 2017 MForm 4 → | Jan 10, 7:38 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 22,000 | — | |
| Jan 3, 2017 MForm 4 → | Jan 5, 8:13 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 31,000 | — | |
| Dec 27, 2016 MForm 4 → | Dec 29, 8:14 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 3,000 | — | — | 40,000 | — | |
| Dec 21, 2016 MForm 4 → | Dec 23, 8:59 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 4,000 | — | — | 43,000 | — | |
| Dec 16, 2016 MForm 4 → | Dec 20, 8:50 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 4,000 | — | — | 47,000 | — | |
| Dec 13, 2016 MForm 4 → | Dec 15, 8:50 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 10,000 | — | — | 51,000 | — | |
| Dec 8, 2016 MForm 4 → | Dec 12, 9:00 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 11,000 | — | — | 61,000 | — | |
| Dec 5, 2016 MForm 4 → | Dec 7, 4:40 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 72,000 | — | |
| Nov 30, 2016 MForm 4 → | Dec 2, 8:18 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 81,000 | — | |
| Nov 29, 2016 MForm 4 → | Nov 29, 4:57 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 3,000 | — | — | 90,000 | — | |
| Nov 23, 2016 MForm 4 → | Nov 28, 6:46 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 93,000 | — | |
| Nov 18, 2016 MForm 4 → | Nov 22, 6:32 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 102,000 | — | |
| Nov 15, 2016 MForm 4 → | Nov 17, 4:48 pm EST | Raymond Joseph Rene BarretteChief Executive Officer, Director | 9,000 | — | — | 111,000 | — | |
| May 5, 2016 MForm 4 → | May 6, 4:10 pm EDT | Raymond Joseph Rene BarretteChief Executive Officer, Director | 5,000 | — | — | 120,000 | — |
Filed by this entity as an insider elsewhere — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 28, 2017 DForm 4 → | Sep 28, 5:08 pm EDT | OneBeacon Insurance Group, Ltd.OB | 71,754,738 | $18.10 | $1,298,760,758 | 0 | — | plan? |
| Feb 1, 2016 DForm 4 → | Feb 2, 3:05 pm EST | Symetra Financial CORPSYA | 20,562,379 | $32.00 | $657,996,128 | 0 | — | plan? |
| Jun 30, 2015 JForm 4 → | Jul 2, 4:04 pm EDT | Symetra Financial CORPSYA | 513,500 | — | — | 20,562,379 | — | plan? |
Filed by this entity as an insider elsewhere — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.