InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (1 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
1
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Explore the full record of transactions filed by Rountree George Manning, Chairman & CEO. Insider active across 1 company, notably White Mountains Insurance Group Ltd. In total, 10 filings have been recorded. Split: 0 buy · 1 sell. Total volume traded: €8.7m. History available since 1 January 2022. The latest transaction was filed on 19 December 2025 (Cession). Regulator: SEC (Form 4). All data is openly available.
Companies and markets linked to Rountree George Manning
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations10 total
5,000 shares@ US$2,050.0059.6% of flowCommon SharesSEC:0000776867-25-000029:0
1,625 shares0Common Shares (restricted)SEC:0001062993-25-003866:0
1,067 shares@ US$1,945.0628.5% of flowCommon SharesSEC:0001062993-25-000040:0
1,800 shares0Common Shares (restricted)SEC:0001062993-24-004347:0
1,068 shares@ US$1,505.0120.8% of flowCommon SharesSEC:0001062993-24-000017:0
2,000 shares0Common Shares (restricted)SEC:0001062993-23-004721:0
1,068 shares@ US$1,414.3320.3% of flowCommon SharesSEC:0001062993-23-000036:0
2,700 shares0Common Shares (restricted)SEC:0001062993-22-005865:0
1,187 shares@ US$1,013.907.2% of flowCommon SharesSEC:0001062993-22-000451:0
952 sharesCommon SharesSEC:0001327330-16-000044:0
10 of 10 declarations
About Rountree George Manning
Rountree George Manning is Président-Directeur Général and Chief Executive Officer of White Mountains Insurance Group Ltd. He has filed 10 forms in total, and the 10 recent filings tracked show EUR 0 of purchases and EUR 8,741,507 of sales, with activity from 2016-01-05 to 2025-12-22. The most frequent transaction nature is Retenue fiscale.
