CEO portrait image

Change is our work. For us,
it’s always about what
comes next.

Dan Glaser
President and Chief Executive Officer, Marsh McLennan

Photo by Alyssa Ringler. Courtesy of NYSE Group © 2022. All rights reserved.

Kate Brennan portrait image

We believe transparent and consistent disclosure enables better-informed business and investment decisions.

Kate Brennan
General Counsel, Marsh McLennan, and Chair, Management ESG Committee


Marsh McLennan is the world’s leading professional services firm in risk, strategy and people. We bring together experts from across our four global businesses — Marsh, Guy Carpenter, Mercer and Oliver Wyman — to help make organizations more successful and societies more resilient.

  • 130

    We operate in over 130 countries

  • 150+

    Founded 150+ years ago

  • 83K

    More than 80,000 global experts