WTM · White Mountains Insurance Group Ltd. Common Stock
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| WHITE MOUNTAINS INSURANCE GROUP LTD Director | ▼ Sell | Open Market | 17,856,614 Shares held | 5/7/2024 | View profile |
| Robert Lawrence Seelig EVP & General Counsel | ▼ Sell | Gift | 17,857 Shares held | 3/19/2026 | View profile |
| George Manning Rountree Chief Executive Officer | ▼ Sell | Open Market | 13,809 Shares held | 12/19/2025 | View profile |
| Reid Tarlton Campbell EVP & Chief Financial Officer | ▲ Buy | Grant | 10,575 Shares held | 5/21/2026 | View profile |
| DAVIS MORGAN W Director | ▼ Sell | Gift | 6,709 Shares held | 12/28/2022 | View profile |
| Liam P. Caffrey EVP& Chief Financial Officer | ▲ Buy | Grant | 3,650 Shares held | 2/25/2026 | View profile |
| Weston M. Hicks Director | ▲ Buy | Grant | 2,936 Shares held | 5/21/2026 | View profile |
| Giles E. Harrison EVP & Chief Strategy Officer | ▲ Buy | Grant | 2,675 Shares held | 2/25/2026 | View profile |
| David Allen Tanner Director | ▼ Sell | Gift | 2,012 Shares held | 8/31/2026 | View profile |
| Mary C. Choksi Director | ▲ Buy | Grant | 1,993 Shares held | 5/21/2026 | View profile |
| Michaela Hildreth Chief Accounting Officer | ▲ Buy | Grant | 1,825 Shares held | 2/25/2026 | View profile |
| Philip A. Gelston Director | ▲ Buy | Grant | 1,703 Shares held | 5/21/2026 | View profile |
| Michael A. Papamichael Chief Financial Officer | ▲ Buy | Grant | 1,200 Shares held | 2/25/2026 | View profile |
| Margaret Dillon Director | ▲ Buy | Grant | 1,080 Shares held | 5/21/2026 | View profile |
| Suzanne F. Shank Director | ▲ Buy | Grant | 1,006 Shares held | 5/21/2026 | View profile |
| Peter M. Carlson Director | ▲ Buy | Grant | 852 Shares held | 5/21/2026 | View profile |
| Steven Yi See Remarks | ▲ Buy | Grant | 525 Shares held | 5/22/2025 | View profile |
| John Chu Director | ▲ Buy | Grant | 335 Shares held | 5/21/2026 | View profile |
| Klar Stephen Director | ▲ Buy | Grant | 113 Shares held | 8/26/2026 | View profile |
Transaction History
| David Allen Tanner | ▼ Sell | Gift | 2 | $0 | 8/31/2026 |
| Klar Stephen | ▲ Buy | Grant | 113 | $0 | 8/26/2026 |
| Peter M. Carlson | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| David Allen Tanner | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Suzanne F. Shank | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Weston M. Hicks | ▲ Buy | Grant | 190 | $0 | 5/21/2026 |
| Philip A. Gelston | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Margaret Dillon | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| John Chu | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Mary C. Choksi | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Reid Tarlton Campbell | ▲ Buy | Grant | 135 | $0 | 5/21/2026 |
| Robert Lawrence Seelig | ▼ Sell | Gift | 50 | $0 | 3/19/2026 |
| David Allen Tanner | ▼ Sell | Gift | 225 | $0 | 3/4/2026 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 775 | $0 | 2/25/2026 |
| Liam P. Caffrey | ▲ Buy | Grant | 1,500 | $0 | 2/25/2026 |
| Giles E. Harrison | ▲ Buy | Grant | 775 | $0 | 2/25/2026 |
| Michaela Hildreth | ▲ Buy | Grant | 600 | $0 | 2/25/2026 |
| Michael A. Papamichael | ▲ Buy | Grant | 500 | $0 | 2/25/2026 |
| Michaela Hildreth | ▼ Sell | Tax Withholding | 274 | $569K | 1/1/2026 |
| Michael A. Papamichael | ▼ Sell | Tax Withholding | 131 | $272K | 1/1/2026 |
| Robert Lawrence Seelig | ▼ Sell | Tax Withholding | 398 | $827K | 1/1/2026 |
| Liam P. Caffrey | ▼ Sell | Tax Withholding | 425 | $883K | 1/1/2026 |
| Michaela Hildreth | ▼ Sell | Gift | 60 | $0 | 12/23/2025 |
| Reid Tarlton Campbell | ▼ Sell | Open Market | 5,000 | $0 | 12/19/2025 |
| George Manning Rountree | ▼ Sell | Open Market | 5,000 | $10.3M | 12/19/2025 |
| Philip A. Gelston | ▼ Sell | Open Market | 165 | $338K | 12/16/2025 |
| Reid Tarlton Campbell | ▼ Sell | Gift | 50 | $0 | 11/25/2025 |
| David Allen Tanner | ▼ Sell | Gift | 4 | $0 | 11/10/2025 |
| Margaret Dillon | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Philip A. Gelston | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Mary C. Choksi | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Peter M. Carlson | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Reid Tarlton Campbell | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Suzanne F. Shank | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Steven Yi | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| David Allen Tanner | ▲ Buy | Grant | 150 | $0 | 5/22/2025 |
| Weston M. Hicks | ▲ Buy | Grant | 210 | $0 | 5/22/2025 |
| George Manning Rountree | ▲ Buy | Grant | 1,625 | $0 | 2/26/2025 |
| Liam P. Caffrey | ▲ Buy | Grant | 1,025 | $0 | 2/26/2025 |
| Giles E. Harrison | ▲ Buy | Grant | 900 | $0 | 2/26/2025 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 825 | $0 | 2/26/2025 |
| Michaela Hildreth | ▲ Buy | Grant | 625 | $0 | 2/26/2025 |
| George Manning Rountree | ▼ Sell | Tax Withholding | 1,067 | $2.1M | 1/1/2025 |
| Liam P. Caffrey | ▼ Sell | Tax Withholding | 420 | $817K | 1/1/2025 |
| Robert Lawrence Seelig | ▼ Sell | Tax Withholding | 496 | $965K | 1/1/2025 |
| Michaela Hildreth | ▼ Sell | Tax Withholding | 323 | $628K | 1/1/2025 |
| Michaela Hildreth | ▼ Sell | Gift | 75 | $0 | 11/29/2024 |
| Giles E. Harrison | ▲ Buy | Grant | 1,000 | $0 | 6/10/2024 |
| Weston M. Hicks | ▲ Buy | Grant | 230 | $0 | 5/23/2024 |
| Reid Tarlton Campbell | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Peter M. Carlson | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Steven Yi | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| David Allen Tanner | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Suzanne F. Shank | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Philip A. Gelston | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Margaret Dillon | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| Mary C. Choksi | ▲ Buy | Grant | 165 | $0 | 5/23/2024 |
| WHITE MOUNTAINS INSURANCE GROUP LTD | ▼ Sell | Open Market | 5,000,200 | $95.0M | 5/7/2024 |
| Reid Tarlton Campbell | ▼ Sell | Gift | 55 | $0 | 3/21/2024 |
| Reid Tarlton Campbell | ▲ Buy | Grant | 45 | $0 | 2/22/2024 |
| Liam P. Caffrey | ▲ Buy | Grant | 1,125 | $0 | 2/22/2024 |
| George Manning Rountree | ▲ Buy | Grant | 1,800 | $0 | 2/22/2024 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 900 | $0 | 2/22/2024 |
| Michaela Hildreth | ▲ Buy | Grant | 600 | $0 | 2/22/2024 |
| George Manning Rountree | ▼ Sell | Tax Withholding | 1,068 | $1.6M | 1/1/2024 |
| Reid Tarlton Campbell | ▼ Sell | Tax Withholding | 710 | $1.1M | 1/1/2024 |
| Robert Lawrence Seelig | ▼ Sell | Tax Withholding | 399 | $600K | 1/1/2024 |
| Michaela Hildreth | ▼ Sell | Tax Withholding | 261 | $393K | 1/1/2024 |
| Michaela Hildreth | ▼ Sell | Gift | 100 | $0 | 12/1/2023 |
| Weston M. Hicks | ▲ Buy | Open Market | 238 | $353K | 11/17/2023 |
| Weston M. Hicks | ▲ Buy | Open Market | 52 | $77K | 11/17/2023 |
| Weston M. Hicks | ▲ Buy | Open Market | 120 | $177K | 11/17/2023 |
| Weston M. Hicks | ▲ Buy | Open Market | 579 | $857K | 11/17/2023 |
| Weston M. Hicks | ▲ Buy | Open Market | 11 | $16K | 11/17/2023 |
| WHITE MOUNTAINS INSURANCE GROUP LTD | ▲ Buy | Open Market | 5,916,816 | $59.2M | 6/30/2023 |
| Peter M. Carlson | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Margaret Dillon | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| David Allen Tanner | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Suzanne F. Shank | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Philip A. Gelston | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Mary C. Choksi | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Weston M. Hicks | ▲ Buy | Grant | 250 | $0 | 5/25/2023 |
| Steven Yi | ▲ Buy | Grant | 180 | $0 | 5/25/2023 |
| Weston M. Hicks | ▲ Buy | Grant | 56 | $0 | 2/22/2023 |
| George Manning Rountree | ▲ Buy | Grant | 2,000 | $0 | 2/22/2023 |
| Liam P. Caffrey | ▲ Buy | Grant | 1,250 | $0 | 2/22/2023 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 1,000 | $0 | 2/22/2023 |
| Michaela Hildreth | ▲ Buy | Grant | 600 | $0 | 2/22/2023 |
| George Manning Rountree | ▼ Sell | Tax Withholding | 1,068 | $1.5M | 1/1/2023 |
| Reid Tarlton Campbell | ▼ Sell | Tax Withholding | 710 | $1.0M | 1/1/2023 |
| Robert Lawrence Seelig | ▼ Sell | Tax Withholding | 359 | $508K | 1/1/2023 |
| Michaela Hildreth | ▼ Sell | Tax Withholding | 176 | $249K | 1/1/2023 |
| DAVIS MORGAN W | ▼ Sell | Gift | 200 | $0 | 12/28/2022 |
| Michaela Hildreth | ▼ Sell | Gift | 53 | $0 | 12/28/2022 |
| Michaela Hildreth | ▼ Sell | Open Market | 100 | $137K | 12/22/2022 |
| Peter M. Carlson | ▼ Sell | Open Market | 200 | $280K | 9/20/2022 |
| DAVIS MORGAN W | ▼ Sell | Open Market | 945 | $1.3M | 9/20/2022 |
| Reid Tarlton Campbell | ▼ Sell | Gift | 100 | $0 | 6/1/2022 |
| Michaela Hildreth | ▼ Sell | Open Market | 100 | $127K | 5/31/2022 |
| DAVIS MORGAN W | ▲ Buy | Grant | 315 | $0 | 5/26/2022 |
| Margaret Dillon | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| Philip A. Gelston | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| Peter M. Carlson | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| Mary C. Choksi | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| David Allen Tanner | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| Suzanne F. Shank | ▲ Buy | Grant | 225 | $0 | 5/26/2022 |
| Robert Lawrence Seelig | ▼ Sell | Gift | 25 | $0 | 5/16/2022 |
| Michaela Hildreth | ▲ Buy | Grant | 750 | $0 | 2/25/2022 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 1,250 | $0 | 2/25/2022 |
| Robert Lawrence Seelig | ▲ Buy | Grant | 750 | $0 | 2/25/2022 |
| George Manning Rountree | ▲ Buy | Grant | 2,700 | $0 | 2/25/2022 |
| George Manning Rountree | ▼ Sell | Tax Withholding | 1,187 | $1.2M | 1/1/2022 |
| Reid Tarlton Campbell | ▼ Sell | Tax Withholding | 800 | $811K | 1/1/2022 |
| Michaela Hildreth | ▼ Sell | Tax Withholding | 178 | $180K | 1/1/2022 |
| DAVIS MORGAN W | ▼ Sell | Gift | 150 | $0 | 12/8/2021 |
| Suzanne F. Shank | ▲ Buy | Grant | 151 | $0 | 10/10/2021 |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 7, 2026
White Mountains Upgraded by Analyst Amid Recent Trading Activity
A rating upgrade for White Mountains Insurance Group was issued, moving the stock to a Buy designation from the prior rating. The upgrade reflects renewed analyst confidence in the company's outlook. The stock is currently trading well above its identified support level of $2160.43, suggesting recent price action has already strengthened from recent lows. With a trailing P/E of 4.9, the valuation remains low relative to broader market averages.
White Mountains Upgraded by Analyst Amid Recent Trading Activity. A rating upgrade for White Mountains Insurance Group was issued, moving the stock to a Buy designation from the prior rating. The upgrade reflects renewed analyst confidence in the company's outlook. The stock is currently trading well above its identified support level of $2160.43, suggesting recent price action has already strengthened from recent lows. With a trailing P/E of 4.9, the valuation remains low relative to broader market averages.