Welcome to Capital Security Bank Limited

We thank you for your interest in Capital Security Bank (CSB). As the only fully-service private bank operating exclusively within the Cook Islands,
CSB provides a distinct level of service to clients seeking to enhance their investment plan.

Brian Mason - Chairman 

Brian is Chairman of Capital Security Bank Limited and has been a Director since 2004. In addition to his role as Director, Brian is also a member of the Audit Committee.

Brian has spent 15 years working in general practice in all fields of law including civil, commercial, equity, contract and constitutional. He has over 10 years’ specialist experience within the offshore trust and banking industry.

Brian is also the Chairman of To Tatou Vai Limited, a government owned company which manages the public water supply. He is also a director of the largest private business in the Cook Islands and a director of a private boutique resort in Rarotonga. He currently operates his own law practice.

Brian’s career commenced in Wellington working for the New Zealand Ministry of Internal Affairs. Following a period overseas to work as a teacher in Zimbabwe, Brian returned to Wellington and was appointed CEO of the Local Government Commission before becoming the private secretary for the Minister of Local Government. Brian then studied law at Victoria University in Wellington and began his legal career in 1990 in the private sector in New Zealand as a solicitor practicing in Ohakune.

In 1993 Brian moved to the Cook Islands initially working as a solicitor for the largest law firm at the time before being appointed the Assistant Chief of Staff for the Office of the Prime Minister of the Cook Islands.

Brian was then appointed to the Cook Islands Investment Corporation, a governmental organisation managing the physical assets of the Cook Islands Government, completing his employment as CEO. In 2000 Brian joined a large Cook Island trust company, utilising his legal skills in the specialist field of equity and in particular the law as it relates to trusts.


• Bachelor of Laws and Masters of Arts (Hons) – Victoria University/Auckland University

• Solicitor of High Court of New Zealand (1990)

• Solicitor of High Court Cook Islands (1992)

• Member Cook Islands Law Society

David Steens - Director

David is the Director of Capital Security Bank, appointed in 2012, 

David has over 25 years’ experience in the financial services sector and has a wealth of knowledge in the area of receivership's and liquidations, asset protection and management.  He has had extensive experience both domestically and internationally.

David is also a Director of Southpac Trust, a Private Trustee Company with offices in New Zealand, Nevis & the Cook Islands.

David began his career in Auckland with for KPMG in a variety of accounting and management consultancy assignments over a five year period gaining extensive experience in a broad range of businesses. In 1994 Enerco New Zealand recruited him as Group Accountant to oversee the annual accounting, audit and regulatory reporting processes for this publicly listed company. He also played a key role in a significant acquisition and subsequent merger. David was recruited into the FMCG sector and worked as Financial Controller for New Zealand Dairy Foods, a Fonterra subsidiary, responsible for the balance sheet of this $400 million company and system/process implementation projects. 

David first joined Capital Security Bank in 1998 as the Finance Manager and over six years managed the logistics in growing the bank through a nearly 20-fold revenue increase. In November 2004 David was appointed Director of Connors Windows and grew the business to become the number one fabricator by volume in New Zealand for that brand. Following the sale of that business in 2011, David was appointed Finance Director for a fiduciary services company based in the Philippines & Hong Kong and managed the internal and client accounting functions and managed the eventual divestment of that business.

David returned to Capital Security Bank in 2012 as Managing Director. In his role David is responsible for the development and implementation of long term strategy plans. Under David’s leadership CSB has seen 400% growth in assets. 


• Chartered Accountant – New Zealand 

• Bachelor of Commerce – Auckland University 

• Member New Zealand Institute of Directors 

• Member Society of Trust and Estate Practitioners 

Andrew Yiangou - Director

Andrew was appointed Director in 2016.

Andrew’s career commenced in Sydney with the Commonwealth Bank of Australia, where he worked for 32 years, progressing through various managerial roles to executive and senior management positions including Sales & Network Management, Product Management and Project and Business Management.

In 2005 Andrew joined National Australia Bank (NAB) as Managing Director Global Transactional Banking Solutions – Global Institutional Banking, a role that saw him lead an end-to-end global payments business across major functions including operations and service, product development, sales and account management, procurement and strategy leading to increased revenue and numerous globally recognised awards for major successes and achievements.

In 2016 Andrew founded his own management consulting business and works with both domestic and international financial institutions with regards to international cash management and payments and primarily in supporting them to navigate the current global regulatory environment and challenges. Andrew is an advocate of great culture and team behaviours believing that the people you work with have a huge influence on your enjoyment, motivation and overall behaviours.

Brendon Stone - Director

Brendon was appointed as a Director of Capital Security Bank Limited in 2018 and is the Chairman of the Audit & Risk Committee.
Brendon began his career at KPMG Hamilton in the audit division, with a focus on companies in the dairy and manufacturing sectors over a 3-year period. In 1999 he was appointed as the resident auditor for KPMG Rarotonga, where he was predominantly responsible for the audit of investment funds, banks and trust companies.
Brendon joined Southpac Trust in 2001 in the role of Company Accountant, and in 2004 was appointed as Finance Manager and Director of Capital Security Bank through until 2007. After returning to New Zealand, he was appointed as Financial Reporting Manager for the publicly-listed AFFCO NZ Ltd, at the time the third largest company in New Zealand by turnover. After 5 years in this role, Brendon moved to the role of Chief Financial Officer with Porter Group, based in Hamilton, where he is responsible for the accounting and administration division for the international group.

• Chartered Accountant – CAANZ

• Bachelor of Business Studies – Massey University

• Member New Zealand Institute of Directors