White Mountains White Mountains White Mountains

  • Heritage
  • Approach
  • Team
  • Companies
  • ESG
  • Contact
  • For Shareholders

Stephen Klar

Director

Stephen Klar was elected as a director of the Company in 2026.  Mr. Klar was formerly the President and a Managing Partner of Wellington Management Group LLP from 2004 to 2026.  Previously, Mr. Klar served as Partner and Co-Leader of the North American Asset Management Practice at McKinsey & Company from 1996 to 2004.  Prior to joining McKinsey, he was a Corporate & Tax Law Attorney with Phillips & Vineberg (Davies Ward) from 1992 to 1996.  Mr. Klar has more than 30 years of financial services leadership across global asset management, management consulting, and corporate law

White Mountains Insurance Group, Ltd.
  • 26 Reid Street, Suite 601
    Hamilton HM 11, Bermuda

    441-278-3160

  • 23 South Main Street, Suite 3B
    Hanover, New Hampshire 03755

    603-640-2200

  • 265 Franklin Street, Suite
    901 Boston, Massachusetts 02110

    617-725-7122

  • 200 Hubbard Road
    Guilford, Connecticut 06437

    203-458-5823

[email protected]

  • Community Engagement
  • Privacy Policy
  • Safe Harbor Statement

©2026 White Mountains Insurance Group, Ltd.