Assidium Registry

Management

Portrait of Jonathan Ellenberger

Jonathan Ellenberger

Founding Director, CEO

Whilst establishing the fixed interest derivative desk for one of the broking houses at the Johannesburg Stock Exchange, Jonathan identified the need for a reliable derivative pricing system. In 1987, RATT-Pac, the origin of the Risk101/Assidium brands, was launched. In 2004 Jonathan opened the Australian office. His team began original design of the Registry in 2010. He is currently based in London where he heads up the UK-Europe division of Assidium and oversees the global portfolio.

Portrait of Sarah McCarthy

Sarah McCarthy

Partner, Director of Operations and Marketing

B. Soc. Sci. UCT · Hons. Econs. UCT

Sarah has been involved in the financial markets since 1984; first as an interest-rate analyst, and later as a bond derivatives broker. She joined Risk101 in 2004 to manage Southern African operations and the global marketing portfolio. She supported the carbon-trading software arm in the UK in 2010, and in recent years has focussed on the Assidium Registry.

Portrait of Andrew Kempe

Andrew Kempe

Director, UK

Andrew has over 25 years of experience in developing online technology systems, pioneering the development of online advertising solutions in the UK and more recently mobile applications in a variety of industries.

He is responsible for all our cloud-based applications, as well as heading up the SQL database team.

Portrait of Alex Gabriel

Alex Gabriel

Main Board Director

CFA Charter-holder / M. Mus. UCT

Alex taught music for twelve years, and still works actively as a performing musician. He redirected his career in 2003, and studied part-time for his CFA before joining Risk101 in 2006. He was made director in 2009.

In 2019, he was appointed as the full-time director of the Cape Town Opera in South Africa. In spite of his heavy schedule, he still remains a board member of the Risk101 group, and is actively involved in the roll-outs of new products and systems.

Portrait of Jeannie Long

Jeannie Long

Director, UK

Jeannie heads up the UK office for Risk101. Her experience is in banking on the Forex desk of a major South African clearing bank. She moved into programming in 1985 with AECI and Centre-file at NatWest. She joined Risk101 in 1995 in support and marketing. She operates closely with Risk101’s Australian and South African offices, who have benefitted from her wide advertising and marketing expertise, as well as programming skills.

Portrait of Lorette du Toit

Lorette du Toit

Head of strategy, Africa

Lorette started in the financial markets in 1988. First in administration and then in bond derivative brokering from 1989 up to 2003. In 2004, she started working with artist Paul du Toit, managing his brand, interacting with and growing his collector base, organising his local and international exhibitions from Hong Kong to New York City.

Lorette joined Assidium in 2018 as Strategic Consultant.