Insider filing · WTM
Reid Tarlton Campbell sold $10.2M of White Mountains Insurance (WTM)
Executed Dec 19 2025, disclosed Dec 22 2025, 3 days later.
Value, as filed
$10.2M
as filed
Executed
Dec 19 2025
the trade date, as filed
Disclosed
Dec 22 2025
3 days after the trade
Return, 21 sessionsiFrom the disclosed entry session; derived
–
purchases only
Returns are measured on stock purchases only.
The filer
RC
Reid Tarlton Campbell
Director
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Reid Tarlton Campbell (Director) filed 2 Form 4 reports in the trailing twelve months (0 purchases, 2 sales), most often in WTM. The largest single filing was $10.2M of WTM (5,000 sh × $2,050.00, as filed), executed Dec 19 2025.
The name
WTM
WTM
WTM · 5 filings in 24 months
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Insider filings, newest first→
View the original filing at www.sec.gov→
Other filings by Reid Tarlton Campbell in WTM
WTMSALE
WHITE MOUNTAINS INSURANCE GROUP LTD
$10.2M5,000 sh × $2,050.00
Exec Dec 19 2025
Filed Dec 22 2025 · 5:30 PM ET