About a-team Marketing Services
The knowledge platform for the financial technology industry

A-Team Insight Blogs

GBST Adds Coexis’ Williams to Exec Team as Chairman of European Ops

Subscribe to our newsletter

Following the completion of its acquisition of Coexis last year, Australian securities services technology vendor GBST has appointed Coexis’ executive chairman, Terry Williams, to its executive team as chairman of its European operations. He will also act as an advisor to the board of directors and will focus on growing the vendor’s operations in the UK and internationally.

The vendor hopes that its acquisition of Coexis will allow it access to the European marketplace, which GBST founder and chair, John Puttick, describes as “important and evolving”. In December, the vendor announced that both Williams and Sunil Shah, previously CEO of Coexis, would join the GBST executive team. However, Williams’ appointment on the operations side of the European business is part of the drive to get traction in this region via his contacts and experience.

Williams worked for Coexis for a period of six, during which he was CEO and, later, executive chairman. He led the team that deployed the company‘s flagship software, Syn~, at investment banks and brokers across Europe, the US and Asia-Pacific

Prior to joining Coexis, Williams led ADP Wilco, a subsidiary of global business outsourcing giant Automatic Data Processing. Williams founded Wilco, which was bought by ADP (now Broadridge) in 1996.

Subscribe to our newsletter

Related content

WEBINAR

Recorded Webinar: The Data Office at a Crossroads — AI Governance, Organisational Design, and the Evolving Mandate of the CDO

Who owns AI governance in a capital markets firm – and is the Data Office structured to bear that weight? These questions sit at the heart of A-Team Research’s latest findings, presented here for the first time: the combined results of two landmark surveys examining the role of the Data Office in AI governance and...

BLOG

A-Team Group Announces Winners of the Data Management Insight Awards – USA 2026

A-Team Group today announced the winners of its annual Data Management Insight Awards – USA 2026, celebrating outstanding vendors, service providers, and consultancies delivering innovative data management solutions to North American capital markets. Now in its sixth year, the awards recognise both established market leaders and groundbreaking newcomers across more than 40 categories, including Best...

EVENT

Buy AND Build: The Future of Capital Markets Technology

Buy AND Build: The Future of Capital Markets Technology London examines the latest changes and innovations in trading technology and explores how technology is being deployed to create an edge in sell side and buy side capital markets financial institutions.

GUIDE

Complex Event Processing

Over the past couple of years, Complex Event Processing has emerged as a hot technology for the financial markets, and its flexibility has been leveraged in applications as diverse as market data cleansing, to algorithmic trading, to compliance monitoring, to risk management. CEP is a solution to many problems, which is one reason why the...