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White Mountains Insurance Group

4 Decision Makers · 4 Verified Contacts

whitemountains.com
📍 Hanover, New Hampshire, United StatesFinance & Banking🗓 Est. 1985👥 51–100 employees

About White Mountains Insurance Group

White Mountains Insurance Group is a financial services holding company.

Leadership & Decision Makers

Contact details of 4 White Mountains Insurance Group decision makers

Giles E. Harrison

EVP and Chief Strategy Officer

John J. Byrne

Founder

Manning Rountree

CEO

Peter M. Carlson

Director

General Emails

General company emails, e.g. customer support lines

    info@whitemountains.com

    General Inquiries

    rbarrette@whitemountains.com

    Unclassified inbox

    fb@whitemountains.com

    Unclassified inbox

Verify White Mountains Insurance Group Emails

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Company Info

Last updated: 31/07/2025

whitemountains.com

+1 603 640 2200

Hanover, New Hampshire, United States

Acquired by: Allstate
Legal Name: White Mountains Insurance Group, Ltd.
Business Type: Private
Employees: 51-100
Founded Date: 1985
Number of Exits: 1
Company Type: For Profit
Operating Status: Active
Phone Number: +1 603 640 2200
Last Investment Activity: Jul 2, 2024
Investments Activity: Jul 2, 2024 Apr 10, 2024 Feb 23, 2024

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