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John Stewart

Senior Underwriter, Casualty

Biography

  • Joined Convex in March 2025 as a Senior Underwriter, U.S. Casualty.
  • Over 20 years of U.S. and International Casualty underwriting experience, focusing on Fortune 1000 insureds
  • Prior to joining Convex, John spent 10 years at XL Catlin / AXA XL, where he held the roles of Class and Senior Class Underwriter (2015–2023) and Underwriting Manager (2023–2025).
  • Prior to AXA XL, John held underwriting roles at AIG and Allied World Assurance Company.

Convex Group's financial strength

Regulatory Reports
  • $3.2bn

    Long-term capital raised

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  • A (Excellent)

    AM Best Rating, outlook Stable. Affirmed 05.06.25

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  • A

    Standard & Poors, outlook Stable. Assigned 25.06.25

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Immediate Team

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