Executives

Chief Executive Officer

Thomas Steimann joined REGIS-TR SA in 2019 from the Spanish Central Securities Depository Iberclear, where he was external advisor for strategic projects in the area of domestic and cross-border post-trade securities services.

Between 1998 and 2017, Thomas was at Deutsche Bank SAE in Madrid, initially with responsibility for non-resident institutional clients’ securities clearing & custody activity in the Spanish market, and from 2006 to 2017 as head of securities clearing & custody and depository bank services for all institutional clients. His responsibilities in this role included P&L for the business unit, control and supervision of operational service delivery and representation of the business to market participants, supervisory authorities and industry groups.

Thomas began his professional career at Westdeutsche Landsbank’s Düsseldorf headquarters, later taking responsibility for the Controlling department for Treasury and Foreign Exchange at West LB (Europa) AG in Madrid. He has a degree in Business Administration from the University of Cologne and is fluent in German, Spanish and English.

Managing Director

Before joining REGIS-TR, María has held various management positions in different units of BME and SIX. For more than 20 years, María led BME's financial information services unit, with operations in Spain, Portugal, Germany and Latin America. María has played roles in the commercial areas, relationship with primary sources of information, product definition and team management and was responsible for the expansion of the business in the Portuguese and Mexican markets. In addition, she has experience in consultancy services of financial markets, having participated in various international competitions for the implementation of infrastructure in said markets.

In the post trading area, María led the bilateral link projects between the CSDs of BME and SIX as part of the synergy initiatives. With respect to REGIS-TR, María has led the company's migration project to the SIX Group, leading a large team from the corporate and business areas, harmonizing the services, functions, and procedures of the company, within SIX standards. In addition to the former, María has been supervising the Trade Repository business and in that function has been responsible for the activities of both TRs - Regis-TR (SA and UK) and SIX TR - belonging to SIX Group.

María holds a Bachelor of Sciences in Economics and Business studies, specializing in Finance, from Universidad Pontificia de Comillas (ICADE) and has an MBA in Portfolio Management.

Managing Director

Alfonso Alcalá joined REGIS-TR SA in 2019 as an integral contributor to the governance and coordination of the IT activities of the company. His professional career began as a research engineer in 1989 at IBM Research and Development Center in Madrid. Holding various responsibilities in information technology and digital transformation throughout his career, Alfonso joined BME Inntech, the value-added service company of Bolsas y Mercados Españoles, as Chief Technology Officer in 2001 to lead the development and operations of technological solutions for the Iberian and Latin-American financial sector. Prior to joining REGIS-TR, Alfonso was the General Manager of Openfinance, a BME Inntech company specialising in the implementation of technological solutions in the wealth management industry for private & personal banks, insurance companies, family offices, brokerages firms, and asset management companies across Europe. He has accomplished an Executive Education Program (PDG) at IESE Business School and has a Masters in Physics from Universidad Complutense de Madrid.

Chief Executive Officer

John Kernan was appointed CEO of REGIS-TR UK Ltd in July 2020, after his role as COO of REGIS-TR UK since April 2019, and a member of the executive management of REGIS-TR S.A. since 2014. In over 25 years in securities services, John has held multiple executive roles, mainly at Clearstream and Deutsche Bank in the UK and Luxembourg, and also at State Street in Ireland where he was Head of Custody Operations.

Previously a lecturer on Custody and Registration for the Irish Fund Industry Association, he is now a regular writer and speaker on European trade reporting regulation. A dual national of the UK and Republic of Ireland, John holds a combined honours degree in Arts & Social Sciences from the University of Kent.

Managing Director

Before becoming Managing Director and Chief Operating Officer of REGIS-TR UK LTD in July 2020, David held the same role at REGIS-TR S.A. for over 9 years, leading the business and IT implementation of the EMIR and SFTR services in the EU and FinfraG services in Switzerland. He joined the company in 2011 to drive the REGIS-TR project after having headed up the Market Supervision Department at MEFF (Spanish Derivatives Exchange) for over 9 years. David joined the BME Group in March 2000 as a derivatives trader at the MEFF front-desk. He holds a bachelor’s degree in Business Administration from San Pablo CEU University, Spain, and a Master of Quality Audit from Comillas Pontifical University (ICADE), Spain.

Chief Compliance Officer

Dionne Moody was appointed as the Chief Compliance Officer (CCO) of REGIS-TR UK LTD in February 2024. Prior to joining the company, Dionne was the CCO for ICE Trade Vault Europe, which is the trade repository arm of Intercontinental Exchange. Dionne has a wealth of financial services experience, previously holding senior compliance positions with JP Morgan, Deutsche Bank and the Canadian Imperial Bank of Commerce (CIBC). During Dionne’s time with CIBC, she held multiple roles, including the of Head of Regulatory Affairs for Europe & Asia, Data Protection Officer for Europe, and the Head of Enterprise Risk Management for Europe & Asia. Dionne holds a First-Class bachelor’s degree in Law from Kingston University and also received a Bachelor of Civil Law (BCL) master’s degree from the University of Oxford.