Risk Committee

Stewart Brooks, Chair

BCom, CA

Stewart joined the Guardians in 2003 from Sterling Grace Portfolio Management Group, where he was Group Company Secretary. Stewart was previously Financial Controller for Motorola Cellular and worked in private equities for seven years. Prior to this, he worked for a computer multinational in the UK

Garry Sue

BCom, CA
Head of Internal Audit

Prior to joining the Fund in 2011, Garry worked with large financial services organisations in New Zealand, as the Chief Internal Auditor at the ASB Group of Companies. His responsibilities covered risk management and leading the internal audit and credit review functions of the business. At the Fund, Garry heads Internal Audit and is a member of the Risk Committee.

Michael Mitchell

Head of Portfolio Risk and Compliance

Michael joined the Fund in 2005 to establish the Fund’s Responsible Investment processes. Since then, he has switched his focus to the Guardians’ risk requirements and has been instrumental in establishing the Risk Record framework, the development of the in-house trading for liquidity and reference portfolio completion. Prior to starting at the Guardians, Michael worked for the Reserve Bank of New Zealand in Wellington before moving on to Morgan Stanley, Westpac Investment Management and ABN Amro.

Sarah Owen

Sarah Owen


Sarah joined the Guardians in 2007 from Westpac/BT Funds Management where she was senior legal counsel/company secretary for the Westpac wealth management companies. Prior to this Sarah was a Senior Associate at Minter Ellison Rudd Watts, and before that DLA Phillips Fox, specialising in funds management/superannuation and commercial law.

David Sara

David Sara

BMS(Hons), MBS(Dist)

David Sara joined the Guardians in 2009. He has substantial experience in financial services, including as Head of Strategy with UK-based Platform Home Loans, Head of Venture Development for Lloyds Banking Group and Manager of Strategic Planning for the National Bank of New Zealand.

Gabriel Gati

Gabriel Gati

MAF, LLB(Hons), BA
Head of Enterprise Risk

Gabriel has broad experience in risk and compliance, primarily gained during his role as Executive Director of Risk and Compliance at IFM Investors, a global fund manager based in Melbourne.  Gabriel started his career in Auckland in corporate law and then moved into funds management in 2008.  Gabriel joined the Fund in 2015 and is responsible for providing risk management leadership across the Fund.