The Faces Behind The Service.
One Investment Group distinguishes itself by employing highly proficient personnel with multifaceted and deep experience in the financial services industry.
Frank co-founded One Investment Group in 2009, and since December 2018 has acted as its chief executive officer. Before founding One Investment Group, Frank spent 6 years working at a structured finance and funds management business. He held a variety of roles including General Counsel, a fund manager of two funds and interim head of the Hong Kong office.
Prior to this corporate experience, Frank was a practicing lawyer with more than 10 years’ experience working in major law firms in Australia and the United Kingdom, specialising in mergers and acquisitions, capital markets, funds management and corporate governance.
Frank has been a non-executive director of several companies, including the corporate manager of a Singapore listed property trust and an APRA regulated insurance company. Frank has a Masters in International Business Law from the University of Technology, Sydney and a Bachelor of Law (with Honours) from the University of Leicester.
Sarah Wiesener is Head of Legal at One Investment Group, joining in 2016. She is an Executive Director of OIG’s Licensee companies.
Sarah brings over 30 years of experience in various jurisdictions and aspect of commercial law including banking and finance and financial services law. In 2009 she moved in-house and since then has acted as general counsel and compliance officer for various funds management businesses as well as company secretary to a number of ASX listed A-REITs.
She is a highly motivated, technical lawyer who is methodical, organised, focused on details and always strives to be a clear communicator. She loves working in-house providing legal solutions to commercial problems. Sarah holds an LLB (Hons) from Bristol University, is an Associate of the Governance Institute of Australia and holds a current NSW Practicing Certificate.
Michael joined OIG in 2012 and has over 25 years’ experience in the financial services industry including experience in providing trustee, custody and administration services to the debt capital markets and funds management industry. He is an Executive Director of OIG’s Licensee companies.
Michael spent 7 years at Perpetual Limited as a senior lawyer in the legal team. He also held various business and legal roles across large, medium, and boutique fund managers, retail and investment banks, structured credit providers, and hedge funds. Michael has served as an executive director and company secretary for ASX-listed companies and Responsible Entities, and has participated in investment, product, risk, audit, and compliance committees.
Michael holds a Bachelor of Laws from University of Technology Sydney and a Bachelor of Arts from Macquarie University and holds a current practising certificate from the NSW Law Society.
Emma is a seasoned finance and tax professional with over 17 years’ experience in accounting and taxation, primarily within chartered accounting firms. She has worked across diverse industries including professional services and real estate, delivering strategic advice and commercial insights to business leaders.
As Chief Financial Officer, Emma leads the Finance team, overseeing financial operations, statutory and management reporting, budgeting, forecasting, and compliance. As a Registered Tax Agent and Chartered Accountant (CA ANZ), she also heads the tax services team, guiding tax strategy, regulatory reporting, and client engagement.
Emma holds a Bachelor of Commerce from the University of Newcastle and is known for her strong leadership, technical expertise, and commitment to financial excellence.
Monique is a client-focused financial services executive with over 25 years’ experience across investment operations, capital markets, custody, fund accounting, and platform operations.
She has held senior roles at Macquarie Bank Ltd, State Street Australia Ltd, Australian Unity, Link Group, OneVue, and now One Investment Group (OIG). Monique brings a deep understanding of operational excellence and stakeholder engagement, consistently delivering high-quality outcomes across complex environments.
Her leadership is defined by a commitment to building trusted relationships, resolving challenges with care and efficiency, and driving continuous improvement in client experience. Monique’s strategic insight and collaborative approach support long-term business growth and client retention.
Kylie brings nearly two decades of experience in funds management and professional services across multiple jurisdictions, with a strong focus on real and alternative asset sectors. Kylie leads the Fund Accounting function, overseeing service delivery for OIG’s fund accounting and reporting capabilities.
Before joining OIG, Kylie spent 15 years in London, including 13 years with IQ-EQ’s predecessor, Augentius Fund Administration, where she managed a large client services team supporting a diverse portfolio of private equity funds.
Earlier in her career, Kylie worked in mid-sized accounting firms in London and Melbourne, managing portfolios for high-net-worth individuals, superannuation funds, trust structures, and luxury retail businesses.
Kylie is a Chartered Accountant, qualified in 2004, and holds a Bachelor of Business from Swinburne University of Technology
Steven has more than 25 years’ fund accounting, registry and risk and compliance experience, having worked both in Australia and the UK. He is Chair of the Risk Management Committee and a non-external Compliance Committee member.
Prior to joining One Investment Group’s fund services team in July 2012, Steven held the position of Senior Account Manager at Citco Fund Services (Sydney) where over a period of 8 years, he was responsible for multiple accounting teams producing NAVs for a range of Australian, Cayman, BVI & Delaware domiciled hedge and private equity funds. Prior to this he was employed at AEGON Asset Management in the UK for 7 years within the Life and Pensions fund reporting team.
Steven commenced his career at Royal Bank of Scotland in the Trustee department.
Director, Corporate Trust
John has over 19 years’ experience in the financial services industry working for a number of both domestic and global organisations.
Prior to joining OIG, John worked for UBS, State Street, RBC, NAB Asset Servicing and MLC and has extensive experience in investment operations, custody and administration.
John has a Bachelor of Arts Degree in Accounting and Finance from Athlone Institute of Technology and a post graduate Higher Diploma from Maynooth University.
Director, Finance & Taxation
Emma has over 17 years’ experience in accounting and taxation working largely in chartered accounting firms servicing clients from various industries including professional services and real estate. Throughout this time Emma has partnered with various business leaders in delivering quality professional advice and commercial insight.
Emma has a Bachelor of Commerce from University of Newcastle, is a member of Chartered Accountants ANZ and is a registered tax agent.
Head of Registry Services
Garry comes to OIG with close to 20 years experience in the Financial Services Industry. Garry’s wide ranging financial services experience encapsulates operational functions within Registry, listed and unlisted asset management, Regulatory Reporting, Systems and Platform Management, AML/CTF Management, Remediation and Complaints Management, and Deceased Estates Management.
As systems owner across multiple organisations, Garry has been instrumental in the implementation and development of Registry and Advice systems from inception to maturity. With a history of developing high performing teams and elevating organisational capacity and efficiency, Garry has built a brand in the industry around seeing opportunities for development and transforming them into functional deliverables that have significant uplift for organisations and the clients.
Notable positions Garry has held include various management roles at Macquarie Wrap Adviser Services, CommSec CBA, State Super Financial Services, First State Super and Aware Super. Garry has a Bachelor’s of Economics/ Managerial Economics from Western Sydney University.
Director, Client Services
Monique is a highly experienced financial services executive with an extensive background spanning over 25 years. She has held key leadership positions in both domestic and global organisations with experience including investment operations, capital markets, platform operations, custody, fund accounting, and middle office.
Monique brings her wealth of expertise and professionalism to One Investment Group gained from her diverse roles across Macquarie Bank Ltd, State Street Australia Ltd, Australian Unity, Link Group and OneVue.
Chief Financial Officer
Tom has over 25 years’ experience as a financial executive having led teams at listed, unlisted, joint venture, divisional, national, and government levels. Tom’s industry experience includes financial services, transport, real estate, leasing, funds management, and structured finance.
Prior to joining OIG in January 2022, Tom was Chief Financial Officer of Indigenous Business Australia, an Australian Government entity with an asset base of nearly $2 billion across housing loan, business loan and investment portfolios. Tom has also held senior finance roles at the likes of Transdev Australasia, CIMIC Group, Mirvac, ING Real Estate and Allco Finance Group.
Tom holds a Bachelor of Commerce (Accounting) from the University of Western Sydney, a Master of Commerce (Professional Accounting) from Macquarie University and is a member of Chartered Accountants Australia and New Zealand.
Head of Sales
Steve has 16 years’ experience in accounting and taxation gained in funds management, corporate and professional services. Prior to joining Unity Fund Services in October 2010, he has held Tax manager roles at both Brookfield Multiplex Ltd and Everest Financial Group Ltd.
Prior to this, Steve worked for Ernst & Young providing general tax advice to corporate clients as well as being involved in a numerous tax due diligence assignments for private equity transactions. He also worked for Horwath as a Supervisor specialising in the provision of taxation and business services to high-net-worth individuals and SME businesses including a secondment to the Chicago (USA) office.
Steve is a Chartered Accountant, Registered Tax Agent and Chartered Tax Adviser of the Tax Institute of Australia. Steve holds a Bachelor of Commerce (Accounting) and Master of Taxation from the University of Sydney.
Head of Corporate Trustee Services
Michael has over 25 years’ experience in the financial services industry including 12 years’ experience in providing trustee, custody and administration services to the debt capital markets and funds management industry.
In this time Michael spent 7 years at Perpetual Limited where he was a senior lawyer in Perpetual’s legal teams. Michael has also spent a number of years in other business and legal roles including working in large, medium and boutique fund managers, retail banks, investment banks, structured credit providers and hedge funds, such as ANZ, ABN AMRO, AMP, Everest and Absolute Capital.
Michael also has experience acting as an executive director of Responsible Entities, ASX listed companies (executive director and company secretary) and acting as a member of investment, product, risk, audit and compliance committees.
Michael holds a Bachelor of Laws from University of Technology Sydney and a Bachelor of Arts from Macquarie University. He is a member of the Australian Securitisation Forum, the Property Funds Association, the Banking and Financial Services Law Association and holds a current practicing certificate from the NSW Law Society.
Head of Legal, Risk and Compliance
Sarah is a lawyer with over 20 years’ experience in the financial services arena across a range of roles, structures and asset classes.
She is a Chartered Company Secretary and has acted as Company Secretary to a number of listed property funds.
Sarah has been head of compliance for a number of listed property funds. She has been a member of investment committees and provided support to audit, risk, and compliance committees as well as remuneration and nomination committees.
Sarah has experience in structuring complex capital markets transactions in domestic and overseas jurisdictions (primarily debt, securitisation and collaterised debt structures) and has worked closely with management on a number of fund management products for wholesale and retail investors.
Sarah holds a Bachelor of Laws from Bristol University (Honours) and holds a current NSW practising certificate.
Founder & Chief Executive Officer
Frank co-founded One Investment Group in 2009, and since December 2018 has acted as its chief executive officer.
Before founding One Investment Group, Frank spent 6 years working at a structured finance and funds management business. He held a variety roles including General Counsel, a fund manager of two funds and interim head of the Hong Kong office.
Prior to this corporate experience, Frank was a practicing lawyer with more than 10 years’ experience working in major law firms in Australia and the United Kingdom, specialising in mergers and acquisitions, capital markets, funds management and corporate governance.
Frank has been a non-executive director of several companies, including the corporate manager of a Singapore listed property trust and an APRA regulated insurance company.
Frank has a Masters in International Business Law from the University of Technology, Sydney and a Bachelor of Law (with Honours) from the University of Leicester.
