Clayton Sumner is a seasoned professional in the financial services and market data industry, currently serving as the Head of Information Services at NZX Limited since October 2025. Prior experience includes a significant tenure at JSE from June 2016 to November 2025, where Clayton held positions as a Trustee on the Board of Trustees for the JSE Pension Fund and as a Senior Account Manager specializing in market data and sales leadership for Trade Explorer. With a background at IRESS as a Product Account Manager and KSA Capital as Director, alongside experience as an Equity Trader at Sasfin Securities, Clayton has a proven track record in driving business growth, managing strategic client relationships, and leading product innovations. Clayton earned a Bachelor of Commerce (BCom) from the University of Johannesburg between 2004 and 2007, following earlier education at St Benedict's College.
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