About a-team Marketing Services
The knowledge platform for the financial technology industry
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 missing piece of the data governance puzzle

Effective data governance delivers data quality and controls across the enterprise, and ensures financial institutions can meet regulators’ demands for transparency and full audit trails. But current approaches to data governance that rely on software and policies are ineffective without the right metadata flowing through them. Listen to us on this webinar where we will...

BLOG

Kingland White Paper and Webinar Discuss How to Improve Entity Data Quality

Reliable entity data is critical to business strategy, but it can be difficult to manage, raising questions about how financial institutions can improve the measurement of entity data quality and manage it in a way that best suits their organisation. Answering the questions are emerging cognitive technologies that can identify and automatically fix incorrect entity...

EVENT

ExchangeTech Summit London

A-Team Group, organisers of the TradingTech Summits, are pleased to announce the inaugural ExchangeTech Summit London on May 14th 2026. This dedicated forum brings together operators of exchanges, alternative execution venues and digital asset platforms with the ecosystem of vendors driving the future of matching engines, surveillance and market access.

GUIDE

ESG Handbook 2023

The ESG Handbook 2023 edition is the essential guide to everything you need to know about ESG and how to manage requirements if you work in financial data and technology. Download your free copy to understand: What ESG Covers: The scope and definition of ESG Regulations: The evolution of global regulations, especially in the UK...