Mr Rizo Patrón has been the chairman of the board since 2012 and a director since 1985. He has been chairman of the board of CELEPSA, Sindicato de Inversiones y Administración S.A. (SIA), Inversiones Andino S.A. (IASA) and Vigilancia Andina S.A. (VIGIANDINA) since 2014, where he was also formerly vice-chairman. He has also been vice chairman of Nuevas Inversiones S.A. (NISA) since 1984. He was a manager of ARPL Tecnología Industrial S.A. (ARPL) from 1979 and member of the board of directors of El Pacífico-Peruano Suiza Compañía de Seguros y Reaseguros S.A. in 2003.

Mr Sotomayor has been a member of our board of directors since 1994. He has been a director of NISA since 1989 and of CELEPSA since 2005. He has been technical manager of ARPL since 1992 and general manager since 2019. At present he is the Latin America and Caribbean Regional Head of ASME (The American Society of Mechanical Engineering).

Mr Ramirez del Villar has been an independent director of UNACEM since 2018. He is a founding partner of law firm Payet, Rey, Cauvi, Pérez Abogados, which was created in 1996 and specializes in general commercial law, mergers and acquisitions and financial transactions. He began his professional career in CONFIEP (1990), was an adviser to the Minister of Industry, Tourism, Integration and International Trade (1992-1993), General Counsel of AFP Integra (1993-1996) and a member of the board of directors and of the Fair Competition Tribunal of INDECOPI. He is a member of the board of directors in the of Lima Stock Exchange (Bolsa de Valores de Lima S.A.A.), Inversiones Brade S.A., IncaRail S.A., Pesquera Diamante S.A. and UNACEM S.A.A. He is a member of the arbitration council of Lima Chamber of Commerce's Arbitration Center. He is also a tutor in his own specialty at the Catholic University's Faculty of Law.

Mr. Alvarado is a finance expert with over 25 years of international experience in investment banking and senior management. He was a Managing Director in the Global M&A Group at Credit Suisse, based in New York (1999-2011) and recently, he served as Corporate Manager of Mergers and Acquisitions (M&A) at Credicorp, a financial services holding company in Latin America with main operations in Peru, Colombia, Chile, and Bolivia. He has extensive experience advising corporate clients, private equity funds, and family offices on acquisition, investment, growth, financial planning, capital raising and business exit strategies.

Mrs Rizo Patrón has been a member of the senior management of ARPL since 1995 and a director since 2007. She is also director and CEO of Inversiones JRPR S.A., member of the board of directors of UNICON S.A., Inversiones Nacionales y Multinacionales Andinas S.A. and of Inmobiliaria Santa Cruz S.A. She is also currently a member of the managing board of Asociación Unacem. She has also been a director of UNICON since 2010 and of UNACEM since 2020.

Mr Rizo Patrón has been one of our directors since 1994. He has also been chairman of the board of directors of UNICON since 1996, of PREANSA Peru since 2007 and of BASF Constructions Chemicals Peru S.A., Master Builders Solutions Peru S.A., since 2000. He has been manager and director of ARPL since 2001. He has also been a director of CELEPSA since 2005, of Entrepisos Lima S.A.C. since 2010, of PREANSA Chile since 2014 and of PREANSA Colombia since 2013.

Mr Ugas has been one of our directors since 1996. He was production manager in 1988, operations manager in 1992 and general manager from 1996 until June 2020. He has been a director of UNICON since 2002, of FICEM since 2004, of CELEPSA since 2005, of the National Manufacturing Society since 2008 and of CONFIEP since 2015. Before working in UNACEM, he was the general manager of Lar Carbon, a UNACEM subsidiary from 1984 to 1988. He also worked for Trupal S.A. from 1974 to 1982 and for Avepack S.A. from 1982 to 1984. He has more than 46 years of uninterrupted professional experience.

Mr Ramos has been a director of UNACEM since 2018. He has worked as an investment professional with The Rohatyn Group (TRG) since 2012, managing the LAPEF private capital fund and involved in the strategic management of the companies in his investment portfolio. Before that he was part of the Latin America investment banking and corporate finance team of Morgan Stanley Investment Bank, New York. Previously he was a member of the investment banking and corporate finance team, concentrating on the technology sector of the American market. He has been an independent director of Pesquera Exalmar S.A.A. since 2016 and was formerly a director of Sindicato de Inversiones y Administración S.A. (2012- 2015).

Mr Gastañeta has been vice chairman of our board since 2012 and a director since 1981. He has been chairman of the board of NISA since 1992 and a director of that company since 1977. He was also a director of Banco Internacional del Peru – Interbank from 2004 to 2015. He has been a member of the board of Inversiones en Concreto y Afines S.A. (INVECO) since 1996, of UNICON since 1996 and of CELEPSA since 2005. He is also a in law firm García Sayán Abogados and has more than 40 years of experience in corporate and tax law.

Mr Cuba has been a member of the board of directors of UNACEM since 2020. He is a partner-director of Macroconsult S.A. and was formerly a director of Peru's central bank. In the public sector he has also been vice president of OSINERG and a member of its managing council; director of COFIDE and a member of its risks and audit committee; vice president and member of the fair competition commission of INDECOPI and member of the consultative council to the president of the Peruvian Judiciary. In the private sector he has been an independent director of Compañía Minera Milpo and RELAPASA. He has also been a consultant to the BID, World Bank, OIT, CEPAL, USAID, CAF, CAN, CIES, Fondoempleo, PCM, MEF and SUNAT; and macroeconomic consultant to major Peruvian and international companies operating in Peru.

Mr De la Piedra has been a director of our company since 2011. He has been the general manager and a director of La Viga S.A. (La Viga) since 1990, a director of SIA since 2011, of NISA since 2010 and of PSW S.A. since 2007.