Alejandro Díez Herrero is a lawyer with practicing experience in Securities Markets Law, Corporate and Commercial Law, Corporate and ESG Governance, Mergers and Acquisitions, Regulatory Law, Tax Law and Administrative Law. He has developed an extensive career as a Secretary and Legal Advisor to the Board of Directors of commercial entities and regulated and supervised entities by the National Securities Market Commission (CNMV), European Securities and Markets Authority (ESMA) y Financial Conduct Authority (FCA).
Currently, he is a Corporate Lawyer at SIX Group (in which since 2005 he was Corporate Lawyer at BME HOLDING, a listed company from 2006 to 2020); Deputy-Secretary of the Board of Directors (BoD) of BME HOLDING since 2025, of REGIS-TR S.A. since 2022 and of REGIS-TR U.K. Ltd since 2022; Secretary and Legal Advisor to the BoD of BILBAO STOCK EXCHANGE since 2022, VALENCIA STOCK EXCHANGE since 2022, BME RENTA FIJA -AIAF EXCHANGE, MARF.SMN, SENAF.SMN- since 2021, MEFF EXCHANGE since 2021, BME SISTEMAS NEGOCIACIÓN -BME MTF EQUITY.SMN and LATIBEX.SMN- since 2020 and BME REGULATORY SERVICES since 2019; and Secretary to the Supervisory Commission of MEFF EXCHANGE since 2011.
Additionally, at SIX Group, he has been responsible for the non-financial information reporting of the BME group (2017-2022); Deputy-Secretary to the BoD of BME RENTA FIJA (2020-2021), MEFF EXCHANGE (2020-2021), BILBAO STOCK EXCHANGE (2018-2021), VALENCIA STOCK EXCHANGE (2018-2021) and MEFF TECNOLOGÍA Y SERVICIOS (2006-2011); and Secretary to the BoD of BME MARKET DATA (2019), MEFF EUROSERVICES, SECURITIES COMPANY (2014-2017), MEFF TECNOLOGÍA Y SERVICIOS (2011-2015), BME INNOVA (2014-2015) and INSTITUTO BME (2014-2015).
Furthermore, he has been Associate Professor of Spanish Tax Law at REY JUAN CARLOS UNIVERSITY (URJC) of Madrid (2017-2021) and external professor of market abuse, money laundering and bank prudential regulation in the "Master’s in Counseling and Financial Planning" at URJC in Madrid (2013-2014). Likewise, he worked as a lawyer at IBERDROLA, S.A. (from January 2005 to October 2005) until joining BME in November 2005 (coinciding with preparatory works of the Initial Public Offering of BME shares).
He holds a Degree in Law at COMPLUTENSE UNIVERSITY OF MADRID (2003), Master of Laws at INSTITUTO DE EMPRESA (2004), Master in Taxation and Tax Law at UNIVERSIDAD A DISTANCIA DE MADRID (2015) and Professional Master in Tax Law at CENTRO DE ESTUDIOS FINANCIEROS (2015), as well as he is registered with the Madrid Bar Association under number 75,750.