| $705M | ||
| $677M | ||
| $350M | ||
| $213M | ||
| $93M | ||
| $77M |
Buys | $0 | 0 | 0 |
Sells | $20,838,004 | 3 | 100 |
| Gelston Philip A | director | 0 | $0 | 1 | $338,004 | $-338,004 |
| CAMPBELL REID TARLTON | director | 0 | $0 | 1 | $10.25M | $-10.25M |
| Rountree George Manning | Chief Executive Officer | 0 | $0 | 1 | $10.25M | $-10.25M |
White Mountains Insurance Group, Ltd. provides insurance services in the United States, the United Kingdom, Bermuda, and internationally. It operates through Ark/WM Outrigger, HG Global, Kudu, Distinguished, and Other Operations segments. The company offers property insurance and reinsurance; specialty insurance and reinsurance consisting of aviation, contingency, cyber, fine art and specie, mortgage, nuclear, political and credit, space, surety, and terrorism and political violence; marine and energy insurance and reinsurance; casualty …
Over the last 12 months, insiders at White Mountains Insurance Group, Ltd. have bought $0 and sold $20.84M worth of White Mountains Insurance Group, Ltd. stock.
On average, over the past 5 years, insiders at White Mountains Insurance Group, Ltd. have bought $1.48M and sold $7.57M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 1,000 shares for transaction amount of $1.48M was made by Hicks Weston M (director) on 2023‑11‑17.
| 2025-12-19 | Sale | Rountree George Manning | Chief Executive Officer | 5,000 0.1966% | $2,050.00 | $10.25M | +4.32% | |
| 2025-12-19 | Sale | CAMPBELL REID TARLTON | director | 5,000 0.1966% | $2,050.00 | $10.25M | +4.32% | |
| 2025-12-16 | Sale | Gelston Philip A | director | 165 0.0065% | $2,048.51 | $338,004 | +4.11% | |
| 2023-11-17 | Hicks Weston M | director | 1,000 0.0391% | $1,480.56 | $1.48M | +18.36% | ||
| 2022-12-22 | Sale | Hildreth Michaela | MD & Chief Accounting Officer | 100 0.0039% | $1,371.84 | $137,184 | +6.01% | |
| 2022-09-20 | Sale | DAVIS MORGAN W | director | 945 0.037% | $1,400.00 | $1.32M | +1.56% | |
| 2022-09-20 | Sale | Carlson Peter M | director | 200 0.0078% | $1,400.00 | $280,000 | +1.56% | |
| 2022-05-31 | Sale | Hildreth Michaela | MD & Chief Accounting Officer | 100 0.004% | $1,270.94 | $127,094 | +9.65% | |
| 2021-02-09 | Sale | DAVIS MORGAN W | director | 1,500 0.0588% | $1,133.28 | $1.7M | -0.01% | |
| 2020-03-24 | DAVIS MORGAN W | director | 1,050 0.0375% | $757.61 | $795,486 | +10.98% | ||
| 2019-12-10 | Sale | SMITH LOWNDES ANDREW | director | 200 0.0077% | $1,105.76 | $221,152 | -18.24% | |
| 2019-08-08 | Sale | SMITH LOWNDES ANDREW | director | 1,000 0.0389% | $1,086.21 | $1.09M | -1.63% | |
| 2019-06-24 | Sale | SEELIG ROBERT LAWRENCE | EVP & General Counsel | 1,000 0.0394% | $1,046.09 | $1.05M | +3.87% | |
| 2019-06-18 | Sale | PALMER JESS BRIAN | Chief Accounting Officer | 431 0.0167% | $1,016.57 | $438,142 | +5.26% | |
| 2019-06-10 | Sale | SMITH LOWNDES ANDREW | director | 500 0.0195% | $1,004.70 | $502,352 | +6.75% | |
| 2019-05-09 | Sale | SEELIG ROBERT LAWRENCE | EVP & General Counsel | 1,083 0.0421% | $977.98 | $1.06M | +9.70% | |
| 2019-04-25 | Sale | DAVIS MORGAN W | director | 554 0.0215% | $928.40 | $514,334 | +15.48% | |
| 2019-04-23 | Sale | DAVIS MORGAN W | director | 696 0.0266% | $910.11 | $633,437 | +15.64% | |
| 2019-04-16 | Sale | DAVIS MORGAN W | director | 354 0.0138% | $912.90 | $323,167 | +17.35% | |
| 2019-04-12 | Sale | DAVIS MORGAN W | director | 585 0.0228% | $916.95 | $536,416 | +17.35% |
| BYRNE MARK JAMES | director | 222156 9.308% | $507.97M | 1 | 0 | +17.4% |
| SEELIG ROBERT LAWRENCE | EVP & General Counsel | 11523 0.4828% | $26.35M | 8 | 5 | +18.15% |
| BARRETTE RAYMOND JOSEPH RENE | Chief Executive Officer | 7999 0.3351% | $18.29M | 26 | 9 | +30.75% |
| DAVIS MORGAN W | director | 6909 0.2895% | $15.8M | 4 | 22 | +37.52% |
| WATERS ALLAN LEWIS | CEO - WTM Re | 6372 0.267% | $14.57M | 3 | 0 | <0.0001% |
| BYRNE JOHN JOSEPH | director | 4325 0.1812% | $9.89M | 2 | 4 | +18.31% |
| Brouillette Yves | director | 3717 0.1557% | $8.5M | 3 | 2 | +39.72% |
| Hicks Weston M | director | 2306 0.0966% | $5.27M | 1 | 0 | +18.36% |
| SMITH LOWNDES ANDREW | director | 1102 0.0462% | $2.52M | 1 | 5 | +4.91% |
| Tanner David Allen | director | 688 0.0288% | $1.57M | 1 | 0 | +16.12% |
| HOLIDAY EDITH E | director | 200 0.0084% | $457,306.00 | 1 | 0 | +21.47% |
| Tolman Gary Charles | Pres & CEO - Esurance | 0 0% | $0 | 3 | 1 | <0.0001% |
| Frinquelli Angelo Michael | director | 0 0% | $0 | 8 | 1 | +13.09% |
| Increased Positions | 159 | +39.45% | 112,304 | +4.75% |
| Decreased Positions | 167 | -41.44% | 224,018 | -9.48% |
| New Positions | 52 | New | 48,776 | New |
| Sold Out Positions | 36 | Sold Out | 18,705 | Sold Out |
| Total Postitions | 395 | -1.99% | 2M | -4.73% |
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