Our Operating Board

Oliver Ratzesberger

Chairperson

Oliver is an executive business leader and technologist with over 30 years' experience at tech companies such as Teradata and eBay, as well as board positions at Tech San Diego and the University of California San Diego. Having previously held CEO, COO & CPO roles, Oliver led a variety of company and product transformations. He has delivered keynotes on data and tech and co-authored a book that made The Wall Street Journal Best Seller List.

Sarah Arana-Morton

Chief Executive Officer

Sarah is a business leader who brings nearly 20 years’ experience of growing businesses and building high performing teams in the data industry. Prior to her appointment as OpenCorporates’ CEO, she served as its Chief Operating Officer for four years, significantly growing the company’s client base. Sarah served in global leadership roles at dunnhumby, a data science company, having developed business units across Europe, Asia-Pacific and the US from the beginning.

Chris Taggart

Founder & Chief Strategy Officer

Chris founded OpenCorporates and is its Chief Strategy Officer. He is an experienced entrepreneur, having previously run and founded successful magazines companies, and is an acknowledged expert on global company data, particularly corporate identifiers.

Julia Apostle

Non-Executive Director

Julia brings almost 20 years of experience spanning the intersection between law, technology and data from the likes of Twitter and the Financial Times. In addition to her Non-Executive Director role at OpenCorporates, she is a partner in the Tech Transactions group of the law firm Orrick, supporting their Cyber, Privacy and Data Innovation teams.

Alessia Falsarone

Non-Executive Director

As a sustainable finance expert, Alessia brings to OpenCorporates over two decades of asset management and corporate advisory experience spanning three continents. A fellow of the Aspen Institute’s Business and Society Program, she is an advisor to the London Stock Exchange with focus on capital markets’ participation in promoting responsible business practices. Alessia holds a certified corporate director status by NACD.

Our Team

Sarah Arana-Morton

Chief Executive Officer

Sarah is a data industry leader who brings nearly 20 years’ experience. She previously served in global leadership and board directorship roles at dunnhumby, a data science company, and more recently as the Chief Operating Officer of OpenCorporates.

Chris Taggart

Founder & Chief Strategy Officer

Chris founded OpenCorporates and is its Chief Strategy Officer. He is an experienced entrepreneur (having previously run and founded successful magazines companies), and is an acknowledged expert on global company data, particularly corporate identifiers.

Rebecca Lee

Chief Impact Officer

Rebecca joined OpenCorporates after 11 years running Forensic Investigations for PwC and Deloitte: using data to detect, investigate, prevent and remediate crime. The opportunities to tackle crime through OpenCorporates data for the wider public good inspired her to join the team. Outside of work, she loves spending time outside with her family, Land Rovers, Scouting events and her aquarium.

Andrew Dunn

Chief Technology Officer

Andrew leads all our innovative technology efforts. He brings almost 20 years of experience, having led product-centric and cloud native transformation programmes whilst serving as CTO at a variety of companies – including Arachnys and Smarsh.

Tannah Matus

Chief Financial Officer

Tannah is a Chartered Management Accountant (CIMA) with seven years' experience at SMEs covering financial, strategic and operational decision making. More recently, he was a consultant FD/CFO to a number to start-ups & high growth SMEs.

Chloe Trenchard

Chief Human Resources Officer

Chloe spent 15 years in a variety of human resources related roles at American Express, from business partner to recruiter and change manager. Chloe moved into the high-tech scale up world when she joined Treatwell as Group HR Director and recently completed an M&A project for Legal & General. Outside of work Chloe loves spending time with her family, walking her dog and playing tennis.

Ralph Vossmeyer

Chief Revenue Officer

Ralph brings a 20 year track record of transforming sales functions to accelerate growth. He leads our customer-centric sales culture to ensure our disruptive data platform gives our customers a competitive advantage. Previously, Vossmeyer was a General Manager and executive leader at Teradata, where he led sales and delivery teams to generate over $270 million in annual revenues.

Working at OpenCorporates

If you want to make a difference, find out more about working at OpenCorporates and what it takes to become part of the team.

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