{"transactions":[{"id":672475,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-08-31T21:04:16.000Z","date":"2026-08-31","kind":"gift","planned":false,"acquired":false,"shares":2,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2012,"source":{"system":"sec-edgar","filing":"0000776867-26-000051","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000051/form4.xml","form_type":"4"}},{"id":674280,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":19224,"kind":"person","name":"Klar Stephen","position":1,"cik":"0001538108","reported_name":"Klar Stephen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-08-27T19:46:03.000Z","date":"2026-08-26","kind":"grant","planned":false,"acquired":true,"shares":113,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Pro-rated Annual Director Share Award"}],"balance_after":113,"source":{"system":"sec-edgar","filing":"0000776867-26-000049","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000049/form4.xml","form_type":"4"}},{"id":766976,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:35:21.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":2014,"source":{"system":"sec-edgar","filing":"0000776867-26-000045","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000045/form4.xml","form_type":"4"}},{"id":766975,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":39298,"kind":"person","name":"SHANK SUZANNE F.","position":1,"cik":"0001713197","reported_name":"SHANK SUZANNE F.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:35:04.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1006,"source":{"system":"sec-edgar","filing":"0000776867-26-000044","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000044/form4.xml","form_type":"4"}},{"id":766974,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:34:37.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":190,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Chairman Share Award"}],"balance_after":2936,"source":{"system":"sec-edgar","filing":"0000776867-26-000043","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000043/form4.xml","form_type":"4"}},{"id":766973,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44967,"kind":"person","name":"Gelston Philip A","position":1,"cik":"0001733327","reported_name":"Gelston Philip A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:34:10.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1703,"source":{"system":"sec-edgar","filing":"0000776867-26-000042","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000042/form4.xml","form_type":"4"}},{"id":766972,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44966,"kind":"person","name":"Dillon Margaret","position":1,"cik":"0001787371","reported_name":"Dillon Margaret","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:33:35.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1080,"source":{"system":"sec-edgar","filing":"0000776867-26-000041","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000041/form4.xml","form_type":"4"}},{"id":766971,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44965,"kind":"person","name":"Chu John","position":1,"cik":"0002132220","reported_name":"Chu John","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:32:56.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":335,"source":{"system":"sec-edgar","filing":"0000776867-26-000040","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000040/form4.xml","form_type":"4"}},{"id":766970,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":32540,"kind":"person","name":"CHOKSI MARY C","position":1,"cik":"0001205706","reported_name":"CHOKSI MARY C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:32:14.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1993,"source":{"system":"sec-edgar","filing":"0000776867-26-000038","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000038/form4.xml","form_type":"4"}},{"id":766969,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":36623,"kind":"person","name":"Carlson Peter M","position":1,"cik":"0001379320","reported_name":"Carlson Peter M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:31:46.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":852,"source":{"system":"sec-edgar","filing":"0000776867-26-000037","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000037/form4.xml","form_type":"4"}},{"id":766968,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-05-22T14:30:51.000Z","date":"2026-05-21","kind":"grant","planned":false,"acquired":true,"shares":135,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":10575,"source":{"system":"sec-edgar","filing":"0000776867-26-000036","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000036/form4.xml","form_type":"4"}},{"id":832880,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares","published_at":"2026-03-20T18:51:41.000Z","date":"2026-03-19","kind":"gift","planned":false,"acquired":false,"shares":50,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":17857,"source":{"system":"sec-edgar","filing":"0000776867-26-000025","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000025/form4.xml","form_type":"4"}},{"id":859983,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2026-03-05T15:21:50.000Z","date":"2026-03-04","kind":"gift","planned":false,"acquired":false,"shares":225,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1879,"source":{"system":"sec-edgar","filing":"0000776867-26-000023","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000023/form4.xml","form_type":"4"}},{"id":878683,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares (Restricted)","published_at":"2026-02-27T16:19:11.000Z","date":"2026-02-25","kind":"grant","planned":false,"acquired":true,"shares":1500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 25, 2026, the Reporting Person received a restricted share award of 1,500 Common Shares, which vests on January 1, 2029."}],"balance_after":3650,"source":{"system":"sec-edgar","filing":"0000776867-26-000021","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000021/form4.xml","form_type":"4"}},{"id":878682,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64358,"kind":"person","name":"Harrison Giles E","position":1,"cik":"0002019288","reported_name":"Harrison Giles E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Shares (restricted)","published_at":"2026-02-27T16:18:46.000Z","date":"2026-02-25","kind":"grant","planned":false,"acquired":true,"shares":775,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 25, 2026, the Reporting Person received a restricted share award of 775 Common Shares, which vests on January 1, 2029."}],"balance_after":2675,"source":{"system":"sec-edgar","filing":"0000776867-26-000020","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000020/form4.xml","form_type":"4"}},{"id":878681,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares (Restricted)","published_at":"2026-02-27T16:18:22.000Z","date":"2026-02-25","kind":"grant","planned":false,"acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On February 25, 2026, the Reporting Person received a restricted share award of 600 Common Shares, which vests on January 1, 2029."}],"balance_after":1825,"source":{"system":"sec-edgar","filing":"0000776867-26-000019","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000019/form4.xml","form_type":"4"}},{"id":878680,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64356,"kind":"person","name":"Papamichael Michael A","position":1,"cik":"0002090784","reported_name":"Papamichael Michael A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Shares (Restricted)","published_at":"2026-02-27T16:17:59.000Z","date":"2026-02-25","kind":"grant","planned":false,"acquired":true,"shares":500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On February 25, 2026, the Reporting Person received a restricted share award of 500 Common Shares, which vests on January 1, 2029."}],"balance_after":1200,"source":{"system":"sec-edgar","filing":"0000776867-26-000018","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000018/form4.xml","form_type":"4"}},{"id":878679,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares (restricted)","published_at":"2026-02-27T16:17:30.000Z","date":"2026-02-25","kind":"grant","planned":false,"acquired":true,"shares":775,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On February 25, 2026, the Reporting Person received a restricted share award of 775 Common Shares, which vests on January 1, 2029."}],"balance_after":2500,"source":{"system":"sec-edgar","filing":"0000776867-26-000017","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000017/form4.xml","form_type":"4"}},{"id":954170,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2026-01-05T14:09:25.000Z","date":"2026-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":274,"price":2078.03,"value":569380.22,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2026, 600 restricted Common Shares became unrestricted. 274 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":2491,"source":{"system":"sec-edgar","filing":"0000776867-26-000010","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000010/form4.xml","form_type":"4"}},{"id":955979,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64356,"kind":"person","name":"Papamichael Michael A","position":1,"cik":"0002090784","reported_name":"Papamichael Michael A","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Shares","published_at":"2026-01-03T02:28:22.000Z","date":"2026-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":131,"price":2078.03,"value":272221.93,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2026, 400 restricted Common Shares became unrestricted. 131 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":772,"source":{"system":"sec-edgar","filing":"0000776867-26-000009","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000009/form4.xml","form_type":"4"}},{"id":955978,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares","published_at":"2026-01-02T23:04:43.000Z","date":"2026-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":398,"price":2078.03,"value":827055.94,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2026, 1,000 restricted Common Shares became unrestricted. 398 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":17907,"source":{"system":"sec-edgar","filing":"0000776867-26-000007","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000007/form4.xml","form_type":"4"}},{"id":955977,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares","published_at":"2026-01-02T23:02:48.000Z","date":"2026-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":425,"price":2078.03,"value":883162.75,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2026, 1,250 restricted Common Shares became unrestricted. 425 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":1655,"source":{"system":"sec-edgar","filing":"0000776867-26-000006","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686726000006/form4.xml","form_type":"4"}},{"id":960370,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2025-12-23T18:55:23.000Z","date":"2025-12-23","kind":"gift","planned":false,"acquired":false,"shares":60,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2165,"source":{"system":"sec-edgar","filing":"0000776867-25-000034","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000034/form4.xml","form_type":"4"}},{"id":961589,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-12-22T21:51:07.000Z","date":"2025-12-19","kind":"sale","planned":false,"acquired":false,"shares":5000,"price":2050,"value":10250000.0,"ownership":{"direct":true},"balance_after":10440,"source":{"system":"sec-edgar","filing":"0000776867-25-000032","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000032/form4a.xml","form_type":"4/A","original_submission_date":"2025-12-22"}},{"id":961588,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-12-22T15:14:24.000Z","date":"2025-12-19","kind":"sale","planned":false,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":10440,"source":{"system":"sec-edgar","filing":"0000776867-25-000030","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000030/form4.xml","form_type":"4"}},{"id":961587,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares","published_at":"2025-12-22T15:13:58.000Z","date":"2025-12-19","kind":"sale","planned":false,"acquired":false,"shares":5000,"price":2050,"value":10250000.0,"ownership":{"direct":true},"balance_after":13809,"source":{"system":"sec-edgar","filing":"0000776867-25-000029","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000029/form4.xml","form_type":"4"}},{"id":968421,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44967,"kind":"person","name":"Gelston Philip A","position":1,"cik":"0001733327","reported_name":"Gelston Philip A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-12-17T01:41:57.000Z","date":"2025-12-16","kind":"sale","planned":false,"acquired":false,"shares":165,"price":2048.51,"value":338004.15,"ownership":{"direct":true},"balance_after":1568,"source":{"system":"sec-edgar","filing":"0000776867-25-000025","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000025/form4.xml","form_type":"4"}},{"id":988057,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-11-26T15:25:35.000Z","date":"2025-11-25","kind":"gift","planned":false,"acquired":false,"shares":50,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":15440,"source":{"system":"sec-edgar","filing":"0000776867-25-000021","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000077686725000021/form4.xml","form_type":"4"}},{"id":1004354,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-11-10T20:30:29.000Z","date":"2025-11-10","kind":"gift","planned":false,"acquired":false,"shares":4,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":2104,"source":{"system":"sec-edgar","filing":"0001318960-25-000008","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000131896025000008/form4.xml","form_type":"4"}},{"id":1134346,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":39298,"kind":"person","name":"SHANK SUZANNE F.","position":1,"cik":"0001713197","reported_name":"SHANK SUZANNE F.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-27T13:59:16.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":871,"source":{"system":"sec-edgar","filing":"0001062993-25-010325","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010325/form4.xml","form_type":"4"}},{"id":1136353,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":1097,"kind":"person","name":"Yi Steven","position":1,"cik":"0001829946","reported_name":"Yi Steven","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:12:17.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":525,"source":{"system":"sec-edgar","filing":"0001062993-25-010302","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010302/form4.xml","form_type":"4"}},{"id":1136352,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:11:56.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":2108,"source":{"system":"sec-edgar","filing":"0001062993-25-010301","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010301/form4.xml","form_type":"4"}},{"id":1136351,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:10:50.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":210,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Chairman Share Award"}],"balance_after":2746,"source":{"system":"sec-edgar","filing":"0001062993-25-010300","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010300/form4.xml","form_type":"4"}},{"id":1136350,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44967,"kind":"person","name":"Gelston Philip A","position":1,"cik":"0001733327","reported_name":"Gelston Philip A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:10:23.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1733,"source":{"system":"sec-edgar","filing":"0001062993-25-010299","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010299/form4.xml","form_type":"4"}},{"id":1136349,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44966,"kind":"person","name":"Dillon Margaret","position":1,"cik":"0001787371","reported_name":"Dillon Margaret","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:10:03.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":945,"source":{"system":"sec-edgar","filing":"0001062993-25-010298","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010298/form4.xml","form_type":"4"}},{"id":1136348,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":32540,"kind":"person","name":"CHOKSI MARY C","position":1,"cik":"0001205706","reported_name":"CHOKSI MARY C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:09:43.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1858,"source":{"system":"sec-edgar","filing":"0001062993-25-010297","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010297/form4.xml","form_type":"4"}},{"id":1136347,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":36623,"kind":"person","name":"Carlson Peter M","position":1,"cik":"0001379320","reported_name":"Carlson Peter M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:09:16.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Since the date of the reporting person's last ownership report, he transferred 566 shares of WTM common stock in connection with a dissolution of marriage.  The reporting person no longer reports as beneficially owned any such transferred securities."}],"balance_after":717,"source":{"system":"sec-edgar","filing":"0001062993-25-010296","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010296/form4.xml","form_type":"4"}},{"id":1136346,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2025-05-23T23:08:57.000Z","date":"2025-05-22","kind":"grant","planned":false,"acquired":true,"shares":150,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":15490,"source":{"system":"sec-edgar","filing":"0001062993-25-010295","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325010295/form4.xml","form_type":"4"}},{"id":1239724,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares (restricted)","published_at":"2025-02-28T14:33:17.000Z","date":"2025-02-26","kind":"grant","planned":false,"acquired":true,"shares":1625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 26, 2025, the Reporting Person received a restricted share award of 1,625 Common Shares, which vests on January 1, 2028."}],"balance_after":5425,"source":{"system":"sec-edgar","filing":"0001062993-25-003866","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325003866/form4.xml","form_type":"4"}},{"id":1239723,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP& Chief Financial Officer"}}],"security":"Common Shares (restricted)","published_at":"2025-02-28T14:32:32.000Z","date":"2025-02-26","kind":"grant","planned":false,"acquired":true,"shares":1025,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 26, 2025, the Reporting Person received a restricted share award of 1,025 Common Shares, which vests on January 1, 2028."}],"balance_after":3400,"source":{"system":"sec-edgar","filing":"0001062993-25-003865","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325003865/form4.xml","form_type":"4"}},{"id":1239721,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64358,"kind":"person","name":"Harrison Giles E","position":1,"cik":"0002019288","reported_name":"Harrison Giles E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & Chief Strategy Officer"}}],"security":"Common Shares (restricted)","published_at":"2025-02-28T14:31:37.000Z","date":"2025-02-26","kind":"grant","planned":false,"acquired":true,"shares":900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 26, 2025, the Reporting Person received a restricted share award of 900 Common Shares, which vests on January 1, 2028."}],"balance_after":1900,"source":{"system":"sec-edgar","filing":"0001062993-25-003864","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325003864/form4.xml","form_type":"4"}},{"id":1239722,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares (restricted)","published_at":"2025-02-28T14:23:40.000Z","date":"2025-02-26","kind":"grant","planned":false,"acquired":true,"shares":825,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 26 2025, the Reporting Person received a restricted share award of 825 Common Shares, which vests on January 1, 2028."}],"balance_after":2725,"source":{"system":"sec-edgar","filing":"0001062993-25-003860","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325003860/form4.xml","form_type":"4"}},{"id":1239718,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares (Restricted)","published_at":"2025-02-28T14:23:02.000Z","date":"2025-02-26","kind":"grant","planned":false,"acquired":true,"shares":625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 26, 2025, the Reporting Person received a restricted share award of 625 Common Shares, which vests on January 1, 2028."}],"balance_after":1825,"source":{"system":"sec-edgar","filing":"0001062993-25-003859","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325003859/form4.xml","form_type":"4"}},{"id":1317531,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares","published_at":"2025-01-03T14:23:04.000Z","date":"2025-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1067,"price":1945.06,"value":2075379.02,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2025, 2,700 restricted Common Shares became unrestricted.  1,067 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":18809,"source":{"system":"sec-edgar","filing":"0001062993-25-000040","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325000040/form4.xml","form_type":"4"}},{"id":1317530,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CFO"}}],"security":"Common Shares","published_at":"2025-01-03T14:22:26.000Z","date":"2025-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":420,"price":1945.06,"value":816925.2,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2025, 1,250 restricted Common Shares became unrestricted.  420 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":830,"source":{"system":"sec-edgar","filing":"0001062993-25-000039","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325000039/form4.xml","form_type":"4"}},{"id":1317529,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares","published_at":"2025-01-03T14:21:46.000Z","date":"2025-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":496,"price":1945.06,"value":964749.76,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2025, 1,250 restricted Common Shares became unrestricted.  496 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":17305,"source":{"system":"sec-edgar","filing":"0001062993-25-000038","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325000038/form4.xml","form_type":"4"}},{"id":1317528,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2025-01-03T14:21:08.000Z","date":"2025-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":323,"price":1945.06,"value":628254.38,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2025, 750 restricted Common Shares became unrestricted.  323 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":2225,"source":{"system":"sec-edgar","filing":"0001062993-25-000037","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299325000037/form4.xml","form_type":"4"}},{"id":1347926,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2024-12-02T21:05:11.000Z","date":"2024-11-29","kind":"gift","planned":false,"acquired":false,"shares":75,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1798,"source":{"system":"sec-edgar","filing":"0001062993-24-019864","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324019864/form4.xml","form_type":"4"}},{"id":1485741,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64358,"kind":"person","name":"Harrison Giles E","position":1,"cik":"0002019288","reported_name":"Harrison Giles E","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & Chief Strategy Officer"}}],"security":"Common Shares (restricted)","published_at":"2024-06-10T13:01:00.000Z","date":"2024-06-10","kind":"grant","planned":false,"acquired":true,"shares":1000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On June 10, 2024, the Reporting Person received a restricted share award of 1,000 Common Shares, which vests on January 1, 2027."}],"balance_after":1000,"source":{"system":"sec-edgar","filing":"0001062993-24-012249","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324012249/form4.xml","form_type":"4"}},{"id":1502841,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":1097,"kind":"person","name":"Yi Steven","position":1,"cik":"0001829946","reported_name":"Yi Steven","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:17:14.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":375,"source":{"system":"sec-edgar","filing":"0001062993-24-011192","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011192/form4.xml","form_type":"4"}},{"id":1502840,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:16:44.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1958,"source":{"system":"sec-edgar","filing":"0001062993-24-011191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011191/form4.xml","form_type":"4"}},{"id":1502839,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":39298,"kind":"person","name":"SHANK SUZANNE F.","position":1,"cik":"0001713197","reported_name":"SHANK SUZANNE F.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:16:16.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":721,"source":{"system":"sec-edgar","filing":"0001062993-24-011190","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011190/form4.xml","form_type":"4"}},{"id":1502838,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44967,"kind":"person","name":"Gelston Philip A","position":1,"cik":"0001733327","reported_name":"Gelston Philip A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:15:50.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1583,"source":{"system":"sec-edgar","filing":"0001062993-24-011189","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011189/form4.xml","form_type":"4"}},{"id":1502837,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44966,"kind":"person","name":"Dillon Margaret","position":1,"cik":"0001787371","reported_name":"Dillon Margaret","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:15:15.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":795,"source":{"system":"sec-edgar","filing":"0001062993-24-011188","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011188/form4.xml","form_type":"4"}},{"id":1502834,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":32540,"kind":"person","name":"CHOKSI MARY C","position":1,"cik":"0001205706","reported_name":"CHOKSI MARY C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:14:49.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1708,"source":{"system":"sec-edgar","filing":"0001062993-24-011187","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011187/form4.xml","form_type":"4"}},{"id":1502836,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":36623,"kind":"person","name":"Carlson Peter M","position":1,"cik":"0001379320","reported_name":"Carlson Peter M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:14:26.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1133,"source":{"system":"sec-edgar","filing":"0001062993-24-011186","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011186/form4.xml","form_type":"4"}},{"id":1502835,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:13:59.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":165,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":15340,"source":{"system":"sec-edgar","filing":"0001062993-24-011185","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011185/form4.xml","form_type":"4"}},{"id":1502833,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-05-24T16:13:33.000Z","date":"2024-05-23","kind":"grant","planned":false,"acquired":true,"shares":230,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Chairman Share Award"}],"balance_after":2536,"source":{"system":"sec-edgar","filing":"0001062993-24-011184","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324011184/form4.xml","form_type":"4"}},{"id":1565449,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-03-21T15:36:24.000Z","date":"2024-03-21","kind":"gift","planned":false,"acquired":false,"shares":55,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":15175,"source":{"system":"sec-edgar","filing":"0001062993-24-006912","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324006912/form4.xml","form_type":"4"}},{"id":1623776,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares (restricted)","published_at":"2024-02-24T02:28:41.000Z","date":"2024-02-22","kind":"grant","planned":false,"acquired":true,"shares":1800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2024, the Reporting Person received a restricted share award of 1,800 Common Shares, which vests on January 1, 2027."}],"balance_after":6500,"source":{"system":"sec-edgar","filing":"0001062993-24-004347","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324004347/form4.xml","form_type":"4"}},{"id":1623775,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP& Chief Financial Officer"}}],"security":"Common Shares (restricted)","published_at":"2024-02-24T02:28:16.000Z","date":"2024-02-22","kind":"grant","planned":false,"acquired":true,"shares":1125,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2024, the Reporting Person received a restricted share award of 1,125 Common Shares, which vests on January 1, 2027."}],"balance_after":3625,"source":{"system":"sec-edgar","filing":"0001062993-24-004346","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324004346/form4.xml","form_type":"4"}},{"id":1623774,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares (restricted)","published_at":"2024-02-24T02:27:47.000Z","date":"2024-02-22","kind":"grant","planned":false,"acquired":true,"shares":900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22 2024, the Reporting Person received a restricted share award of 900 Common Shares, which vests on January 1, 2027."}],"balance_after":3150,"source":{"system":"sec-edgar","filing":"0001062993-24-004345","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324004345/form4.xml","form_type":"4"}},{"id":1623773,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares (Restricted)","published_at":"2024-02-24T02:27:17.000Z","date":"2024-02-22","kind":"grant","planned":false,"acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2024, the Reporting Person received a restricted share award of 600 Common Shares, which vests on January 1, 2027."}],"balance_after":1950,"source":{"system":"sec-edgar","filing":"0001062993-24-004344","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324004344/form4.xml","form_type":"4"}},{"id":1623772,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2024-02-24T02:26:41.000Z","date":"2024-02-22","kind":"grant","planned":false,"acquired":true,"shares":45,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Pro-rated director share award."}],"balance_after":15230,"source":{"system":"sec-edgar","filing":"0001062993-24-004343","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324004343/form4.xml","form_type":"4"}},{"id":1697410,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares","published_at":"2024-01-02T17:01:12.000Z","date":"2024-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":1068,"price":1505.01,"value":1607350.68,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2024, 2,700 restricted Common Shares became unrestricted.  1,068 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":17176,"source":{"system":"sec-edgar","filing":"0001062993-24-000017","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324000017/form4.xml","form_type":"4"}},{"id":1697409,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Shares","published_at":"2024-01-02T17:00:39.000Z","date":"2024-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":710,"price":1505.01,"value":1068557.1,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2024, 1,800 restricted Common Shares became unrestricted.  710 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":15185,"source":{"system":"sec-edgar","filing":"0001062993-24-000016","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324000016/form4.xml","form_type":"4"}},{"id":1697408,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares","published_at":"2024-01-02T16:59:52.000Z","date":"2024-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":399,"price":1505.01,"value":600498.99,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2024, 1000 restricted Common Shares became unrestricted.  399 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":16551,"source":{"system":"sec-edgar","filing":"0001062993-24-000015","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324000015/form4.xml","form_type":"4"}},{"id":1697407,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2024-01-02T16:59:24.000Z","date":"2024-01-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":261,"price":1505.01,"value":392807.61,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2024, 600 restricted Common Shares became unrestricted.  261 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":1873,"source":{"system":"sec-edgar","filing":"0001062993-24-000014","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299324000014/form4.xml","form_type":"4"}},{"id":1726100,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2023-12-01T22:10:30.000Z","date":"2023-12-01","kind":"gift","planned":false,"acquired":false,"shares":100,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1534,"source":{"system":"sec-edgar","filing":"0001062993-23-021704","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021704/form4.xml","form_type":"4"}},{"id":1735535,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T19:39:43.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":238,"price":1484.96,"value":353420.48,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $1484.28 to $1485.00, inclusive."}],"balance_after":2306,"source":{"system":"sec-edgar","filing":"0001062993-23-021200","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021200/form4a.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735534,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T19:39:43.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":11,"price":1483.43,"value":16317.73,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $1483.13 to $1483.78, inclusive."}],"balance_after":2068,"source":{"system":"sec-edgar","filing":"0001062993-23-021200","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021200/form4a.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735533,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T19:39:43.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":579,"price":1479.88,"value":856850.52,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $1479.35 to $1480.01, inclusive."}],"balance_after":2057,"source":{"system":"sec-edgar","filing":"0001062993-23-021200","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021200/form4a.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735532,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T19:39:43.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":120,"price":1476.74,"value":177208.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $1476.55 to $1476.92, inclusive."}],"balance_after":1478,"source":{"system":"sec-edgar","filing":"0001062993-23-021200","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021200/form4a.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735531,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T19:39:43.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":52,"price":1476.15,"value":76759.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $1475.51 to $1476.32, inclusive.  The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares transacted at each separate price within the ranges set forth in footnotes (1) to (5) of this Form 4."}],"balance_after":1358,"source":{"system":"sec-edgar","filing":"0001062993-23-021200","document":"form4a.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021200/form4a.xml","form_type":"4/A","original_submission_date":"2023-11-20"}},{"id":1735528,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T13:58:34.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":238,"price":1484.96,"value":353420.48,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $1484.28 to $1485.00, inclusive."}],"balance_after":2306,"source":{"system":"sec-edgar","filing":"0001062993-23-021174","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021174/form4.xml","form_type":"4"}},{"id":1735527,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T13:58:34.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":11,"price":1483.43,"value":16317.73,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $1483.13 to $1483.78, inclusive."}],"balance_after":2068,"source":{"system":"sec-edgar","filing":"0001062993-23-021174","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021174/form4.xml","form_type":"4"}},{"id":1735526,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T13:58:34.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":579,"price":1479.88,"value":856850.52,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $1479.35 to $1480.01, inclusive."}],"balance_after":2057,"source":{"system":"sec-edgar","filing":"0001062993-23-021174","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021174/form4.xml","form_type":"4"}},{"id":1735525,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T13:58:34.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":120,"price":1476.74,"value":177208.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $1476.55 to $1476.92, inclusive."}],"balance_after":1478,"source":{"system":"sec-edgar","filing":"0001062993-23-021174","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021174/form4.xml","form_type":"4"}},{"id":1735524,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-11-20T13:58:34.000Z","date":"2023-11-17","kind":"purchase","planned":false,"acquired":true,"shares":52,"price":1476.15,"value":76759.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price.  These shares were sold in multiple transactions at prices ranging from $1475.51 to $1476.32, inclusive.  The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1) to (5) of this Form 4."}],"balance_after":1358,"source":{"system":"sec-edgar","filing":"0001062993-23-021174","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323021174/form4.xml","form_type":"4"}},{"id":1875606,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":36623,"kind":"person","name":"Carlson Peter M","position":1,"cik":"0001379320","reported_name":"Carlson Peter M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-30T15:15:58.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":968,"source":{"system":"sec-edgar","filing":"0001062993-23-012413","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012413/form4.xml","form_type":"4"}},{"id":1877401,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44966,"kind":"person","name":"Dillon Margaret","position":1,"cik":"0001787371","reported_name":"Dillon Margaret","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T21:28:42.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":630,"source":{"system":"sec-edgar","filing":"0001062993-23-012366","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012366/form4.xml","form_type":"4"}},{"id":1877400,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":18523,"kind":"person","name":"Tanner David Allen","position":1,"cik":"0001318960","reported_name":"Tanner David Allen","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:47:06.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1793,"source":{"system":"sec-edgar","filing":"0001062993-23-012343","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012343/form4.xml","form_type":"4"}},{"id":1877399,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":39298,"kind":"person","name":"SHANK SUZANNE F.","position":1,"cik":"0001713197","reported_name":"SHANK SUZANNE F.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:45:47.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":556,"source":{"system":"sec-edgar","filing":"0001062993-23-012341","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012341/form4.xml","form_type":"4"}},{"id":1877398,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44967,"kind":"person","name":"Gelston Philip A","position":1,"cik":"0001733327","reported_name":"Gelston Philip A","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:35:05.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1418,"source":{"system":"sec-edgar","filing":"0001062993-23-012329","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012329/form4.xml","form_type":"4"}},{"id":1877397,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":32540,"kind":"person","name":"CHOKSI MARY C","position":1,"cik":"0001205706","reported_name":"CHOKSI MARY C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:29:25.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":1543,"source":{"system":"sec-edgar","filing":"0001062993-23-012322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012322/form4.xml","form_type":"4"}},{"id":1877396,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:27:38.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Chairman Share Award."}],"balance_after":1306,"source":{"system":"sec-edgar","filing":"0001062993-23-012318","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012318/form4.xml","form_type":"4"}},{"id":1877395,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":1097,"kind":"person","name":"Yi Steven","position":1,"cik":"0001829946","reported_name":"Yi Steven","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-05-26T20:24:39.000Z","date":"2023-05-25","kind":"grant","planned":false,"acquired":true,"shares":180,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Annual Director Share Award"}],"balance_after":210,"source":{"system":"sec-edgar","filing":"0001062993-23-012309","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323012309/form4.xml","form_type":"4"}},{"id":1994682,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares (restricted)","published_at":"2023-02-24T14:01:23.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2023, the Reporting Person received a restricted share award of 2,000 Common Shares, which vests on January 1, 2026."}],"balance_after":7400,"source":{"system":"sec-edgar","filing":"0001062993-23-004721","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323004721/form4.xml","form_type":"4"}},{"id":1994680,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64359,"kind":"person","name":"Caffrey Liam P","position":1,"cik":"0001915424","reported_name":"Caffrey Liam P","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP& Chief Financial Officer"}}],"security":"Common Shares (restricted)","published_at":"2023-02-24T14:01:02.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":1250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2023, the Reporting Person received a restricted share award of 1,250 Common Shares, which vests on January 1, 2026."}],"balance_after":2500,"source":{"system":"sec-edgar","filing":"0001062993-23-004720","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323004720/form4.xml","form_type":"4"}},{"id":1994679,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares (restricted)","published_at":"2023-02-24T14:00:35.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":1000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22 2023, the Reporting Person received a restricted share award of 1,000 Common Shares, which vests on January 1, 2026."}],"balance_after":3250,"source":{"system":"sec-edgar","filing":"0001062993-23-004719","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323004719/form4.xml","form_type":"4"}},{"id":1994678,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares (Restricted)","published_at":"2023-02-24T14:00:13.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":600,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 22, 2023, the Reporting Person received a restricted share award of 600 Common Shares, which vests on January 1, 2026."}],"balance_after":1950,"source":{"system":"sec-edgar","filing":"0001062993-23-004718","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323004718/form4.xml","form_type":"4"}},{"id":1997527,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44968,"kind":"person","name":"Hicks Weston M","position":1,"cik":"0001186549","reported_name":"Hicks Weston M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2023-02-23T14:06:32.000Z","date":"2023-02-22","kind":"grant","acquired":true,"shares":56,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Pro-rated annual director share award."}],"balance_after":1056,"source":{"system":"sec-edgar","filing":"0001062993-23-004485","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323004485/form4.xml","form_type":"4"}},{"id":2073662,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":71050,"kind":"person","name":"Rountree George Manning","position":1,"cik":"0001457475","reported_name":"Rountree George Manning","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Shares","published_at":"2023-01-03T19:14:50.000Z","date":"2023-01-01","kind":"tax_withholding","acquired":false,"shares":1068,"price":1414.33,"value":1510504.44,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2023, 2,700 restricted Common Shares became unrestricted.  1,068 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":15544,"source":{"system":"sec-edgar","filing":"0001062993-23-000036","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323000036/form4.xml","form_type":"4"}},{"id":2073663,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":44964,"kind":"person","name":"CAMPBELL REID TARLTON","position":1,"cik":"0001378156","reported_name":"CAMPBELL REID TARLTON","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Shares","published_at":"2023-01-03T19:13:52.000Z","date":"2023-01-01","kind":"tax_withholding","acquired":false,"shares":710,"price":1414.33,"value":1004174.3,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2023, 1,800 restricted Common Shares became unrestricted.  710 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":14095,"source":{"system":"sec-edgar","filing":"0001062993-23-000035","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323000035/form4.xml","form_type":"4"}},{"id":2073661,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":56944,"kind":"person","name":"SEELIG ROBERT LAWRENCE","position":1,"cik":"0001188198","reported_name":"SEELIG ROBERT LAWRENCE","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP & General Counsel"}}],"security":"Common Shares","published_at":"2023-01-03T19:13:04.000Z","date":"2023-01-01","kind":"tax_withholding","acquired":false,"shares":359,"price":1414.33,"value":507744.47,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2023, 900 restricted Common Shares became unrestricted.  359 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":15950,"source":{"system":"sec-edgar","filing":"0001062993-23-000034","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323000034/form4.xml","form_type":"4"}},{"id":2073660,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2023-01-03T19:11:33.000Z","date":"2023-01-01","kind":"tax_withholding","acquired":false,"shares":176,"price":1414.33,"value":248922.08,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"On January 1, 2023, 400 restricted Common Shares became unrestricted.  176 of the Common Shares were withheld by the Company to satisfy the Reporting Person's tax obligations."}],"balance_after":1634,"source":{"system":"sec-edgar","filing":"0001062993-23-000033","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299323000033/form4.xml","form_type":"4"}},{"id":2075290,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":121268,"kind":"person","name":"DAVIS MORGAN W","position":1,"cik":"0001265345","reported_name":"DAVIS MORGAN W","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2022-12-29T14:26:52.000Z","date":"2022-12-28","kind":"gift","acquired":false,"shares":200,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":6709,"source":{"system":"sec-edgar","filing":"0001062993-22-024526","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299322024526/form4.xml","form_type":"4"}},{"id":2075288,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2022-12-29T14:25:14.000Z","date":"2022-12-28","kind":"gift","acquired":false,"shares":53,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":1410,"source":{"system":"sec-edgar","filing":"0001062993-22-024524","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299322024524/form4.xml","form_type":"4"}},{"id":2076441,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":64357,"kind":"person","name":"Hildreth Michaela","position":1,"cik":"0001863001","reported_name":"Hildreth Michaela","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"MD & Chief Accounting Officer"}}],"security":"Common Shares","published_at":"2022-12-27T19:48:32.000Z","date":"2022-12-22","kind":"sale","acquired":false,"shares":100,"price":1371.84,"value":137184.0,"ownership":{"direct":true},"balance_after":1463,"source":{"system":"sec-edgar","filing":"0001062993-22-024489","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299322024489/form4.xml","form_type":"4"}},{"id":2153051,"issuer":{"id":3904,"kind":"organization","name":"WHITE MOUNTAINS INSURANCE GROUP LTD"},"owners":[{"id":36623,"kind":"person","name":"Carlson Peter M","position":1,"cik":"0001379320","reported_name":"Carlson Peter M","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Shares","published_at":"2022-09-22T23:02:48.000Z","date":"2022-09-20","kind":"sale","acquired":false,"shares":200,"price":1400,"value":280000.0,"ownership":{"direct":true},"balance_after":788,"source":{"system":"sec-edgar","filing":"0001062993-22-019881","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/776867/000106299322019881/form4.xml","form_type":"4"}}],"next_cursor":"2022-09-22T23:02:48.000000Z,2153051"}