Sheldon B. Cartwright

CEO (Senior Officer I)

Sheldon Cartwright is a senior financial services leader with a broad hands-on financial management background accumulated over a two decade career. He is skilled in directing financial operations and managing multi-billion dollar investment portfolios with deep knowledge of hedge funds, private equity, banking and real estate.

Mr. Cartwright currently serves as the General Manager of Onyx Partners Limited and Chief Operating Officer (COO) of Caystone Solutions Limited, an operational family office focused on full corporate and fund administration services. Prior to his current roles, he served as the Chief Financial Officer and Group Financial Controller of a Bahamas-based registered investment advisory firm with $7.5 billion in assets under management at its peak.

Mr. Cartwright began his career in audit at a Big Four professional services firm. He received his Bachelor of Arts in Business Administration and Accounting from Acadia University and is a Certified Public Accountant.

Andria S. Mitchell

Senior Officer II

Andria Mitchell is an experienced executive who provides senior level administrative support for fiduciary structures including Private Trust Companies, Bahamian foundations and private corporate investment vehicles. She serves as a Trust Executive with Onyx Partners Limited.

Ms. Mitchell has over 25 years of trust and corporate management experience earned while employed by industry leading firms in The Bahamas and Switzerland. Prior to joining Onyx Partners, she worked in Zurich as a Director and Senior Trust Officer for a major Swiss bank with trust offices in the Cayman Islands, Jersey, Singapore and The Bahamas.

Ms. Mitchell holds a Bachelor of Science degree in Business Administration/Finance from Eastern Connecticut State University and a diploma from the Society of Trust and Estate Practitioners (STEP).


Wendy C. Warren


Ms. Warren is the founder and Managing Director of Caystone Group Limited. Prior to establishing Caystone she spent 11 years as CEO and Executive Director of the Bahamas Financial Services Board. She has also worked in a variety of roles in the fund administration, wealth management and audit fields. She is a Chartered Accountant and holds a Bachelors Degree in Accounting.

Zhivargo S. Laing


Mr. Laing has over 20 years of experience in the areas of government and private business and currently serves as the Executive Director of the Government & Public Policy Institute of the University of The Bahamas. He is a trained economist who has held top posts in finance and economic development in The Bahamas government.