InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
0
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 Tanner David Allen, Director. Director active across 1 company, notably White Mountains Insurance Group Ltd. Cumulatively, 6 disclosures have been logged. History available since 27 May 2021. The latest transaction was filed on 22 May 2025 (Attribution). Regulator: SEC (Form 4). All data is openly available.
Declarations6 total
150 shares0Common SharesSEC:0001062993-25-010301:0
165 shares0Common SharesSEC:0001062993-24-011191:0
180 shares0Common SharesSEC:0001062993-23-012343:0
225 shares0Common SharesSEC:0001062993-22-013656:0
225 shares0Common SharesSEC:0001668244-21-000019:0
225 shares0Common SharesSEC:0001668244-21-000019
6 of 6 declarations
About Tanner David Allen
David Allen Tanner is a Director at White Mountains Insurance Group Ltd. In this role, he participates in the governance and oversight of the company's activities. White Mountains is an insurance company. David brings expertise in corporate strategy and risk management.
