Once the deal is completed, the acquired firm will be renamed under the Vistra brand.

Vistra, a global provider of trust, fiduciary, private office and fund administration services, has agreed to acquire Radius, a specialist US-based provider of international expansion services from private equity firm Hg.

The deal is set to double Vistra’s International Expansion Services (IES) business; the firm said the deal will help it to be the top player in the US market for IES services. 

Vistra’s IES business helps clients navigate how to expand into new markets, including setting up offices, obtaining licensing to operate in foreign markets; it also helps in areas such as compliance and payroll.

Radius is headquartered in Boston with offices across the US and in the UK, India, China, Singapore, Brazil and the Netherlands. It provides managed services, advisory services and OverseasConnect, its integrated cloud-based software platform, to more than 500 clients operating in 80 countries. 

The firm has 880 employees globally. Radius is led by chief executive Stephen Chipman, who will become the group managing director of Vistra’s IES business.

Following the acquisition, Vistra will have a global IES team of 1,300 employees and a support network of over 3,300 staff, operating in over 70 offices and 40 jurisdictions.

“The Radius team has developed a highly successful global business, which is a natural fit with Vistra’s IES operations,” said Martin Crawford, CEO of Vistra. “Joining forces means our clients will have the highest quality people, technology and processes to help them grow with confidence when they are expanding internationally.”

Radius will be rebranded under the Vistra brand when the deal is complete. The financial terms of the deal were not disclosed.