George Manning Rountree sold $10.2M of White Mountains Insurance (WTM)

Executed Dec 19 2025, disclosed Dec 22 2025, 3 days later.

Value, as filed

$10.2M

5,000 sh × $2,050.00

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

GR George Manning Rountree Chief Executive Officer profile →

George Manning Rountree (Chief Executive Officer) filed 1 Form 4 report in the trailing twelve months (0 purchases, 1 sale), 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 ticker → Insider filings, newest first→ View the original filing at www.sec.gov→