Leadership
The leaders at Guardian all have one belief in common — that our success is a reflection of our people and our mutuality mindset.
The best teams ask bold questions. They raise their hands for feedback. They raise their hands to courageously ask about something that might make them feel anxious. Our culture at Guardian makes space for that.

Andrew J. McMahon
Chairman & Chief Executive Officer

Kermitt Brooks
Chief Legal Officer

Erin Culek
Head of Financial Protection & Retirement Solutions

Stacey Hoin
Chief Human Resources Officer

Nick Liolis
Chief Investment Officer

Jonathan Mayhew
Head of Group Benefits

Kevin Molloy
Chief Financial Officer

Mike Perry
Head of Client Solutions & Wealth Management

Michael Prestileo
Chief Strategy Officer

Steve Rullo
Chief Digital & Technology Officer

Wendy Wahl
Chief Marketing & Communications Officer
Board of Directors
View The 2025 Guardian Annual PDF
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