About Us
GROUP ORIGINS
The Group was founded by Mario López Estrada, who began his commercial activities with the company Constructora Maya in 1967. Constructora Maya specialized in real estate, territorial development, low income housing construction, office buildings, shopping centers, and road construction.
In the early 2000s, what is now known as Grupo Onyx was formed. Grupo Onyx encompasses the different companies of the corporate consortium, one of the largest conglomerates in the country.
The most important investment areas of Grupo Onyx are in the real estate industry (with investments in Guatemala and Paraguay), energy, cellular maintenance, telecom product distribution networks, digital services and development, as well as other projects. The corporate social responsibility branch of the corporate group is the Mario López Estrada Foundation.
Mario López Estrada (March 21, 1938 – March 20, 2023) was a Guatemalan businessman, philanthropist, and the founder of Grupo Onyx, a consortium of companies involved in renewable energy generation, consumer products distribution, digital services, and commercial and industrial real estate development in Guatemala and Paraguay. He was also the founder of the Mario López Estrada Foundation.
Members of the Board
Mariana López de Lara is a member of the Board of Directors of Grupo Onyx, and is a founding member of the Mario López Estrada Foundation. She holds degrees in Economics and Business Administration, graduating Magna Cum Laude from the Universidad Francisco Marroquín in Guatemala.
Mario López Pérez is a member of the Board of Directors and CEO of Grupo Onyx, as well as a founding member of the Mario López Estrada Foundation. He is a Civil Engineer who graduated from the Universidad del Valle in Guatemala.
Gabriela López Pérez is a member of the Board of Directors of Grupo Onyx and is a founding member of the Mario López Estrada Foundation. She has a degree in Marketing from the Universidad Rafael Landívar in Guatemala.
Grupo Onyx Leadership Team
Roberto Bianchi Wohlers
COO
He has been with the corporate consortium for over 15 years in several leadership positions and is currently serving as COO of Grupo Onyx. He is a member of the Board of Directors of several companies in the group. He has a Degree in Business Administration and a Master’s Degree in Finance from the London School of Economics (LSE).
Julio Hernández
Director and Head Paraguay Real Estate Division
José Moreno
Director and Head of the Real Estate Division in Guatemala
Diego Donis
Director and Head of Renewable Energy Division
Julio Hernández serves as the Director and Head of the Paraguay Real Estate Division, in this role he is the Country Manager for investments in Paraguay and also Manager of the Paseo Las Galerías complex in Paraguay. He is a Civil Engineer who graduated from Universidad del Valle de Guatemala.
He has been a part of the corporate consortium for 18 years and currently serves as the Director and Head of the Guatemala Real Estate Division for Grupo Onyx. He has a degree in Business Administration from the Universidad Francisco Marroquín in Guatemala and a Master’s degree in Organization Management from the Universidad de Valparaíso in Chile.
He has expertise in renewable energy and currently serves as the Director and Head of the Renewable Energy Division of Grupo Onyx, he has been with the consortium since 2013. He is a Civil Engineer and graduated from the Universidad del Valle in Guatemala. He also holds Master’s degrees in both Business and Real Estate Development from the Universidad Francisco Marroquín in Guatemala.
Marcos Luna
Director and Head of Cellular Maintenance Division
Jorge Dighero
Director and Head of Telecom Division
Francisco Moreira
Director and Head of Digital Services Division
He has been a part of Grupo Onyx since 2014. He holds a degree in Business Administration with a specialization in International Business from the Universidad del Istmo and also holds a Master’s degree in Organization Management in Finance from the Universidad de Valparaíso in Chile.
He serves as the current Director and Head of the Telecom Division and outsourced services. He has worked for Grupo Onyx since 2008. He is an Industrial Engineer who graduated from the Universidad del Valle in Guatemala. He also has an MBA from the EAE Business School in Barcelona, Spain.
He has more than 30 years of managerial experience and serves as the current Manager of Megaprint Guatemala. He has a Degree in Business Administration from Universidad Francisco Marroquín in Guatemala and a Master’s degree in Business Analytics from INCAE.
Miguel Garcés
Director and Head of Real Estate Development
Pablo Veliz
CFO
Carlos Raúl Morales
Director and Head of Inter-Institutional Relations
He has taken part in over 500,000 square meters of management and construction of real estate projects. He is a Civil Engineer with a degree from the University del Valle in Guatemala. He also holds a Master’s degree in Structures, Foundations, and Materials from the Universidad Politécnica in Madrid and an MBA from the Universidad Francisco Marroquín in Guatemala.
He has served the corporate consortium since 2013 in different project management and financial analysis positions and currently serves as CFO of Grupo Onyx. He is an Electronic Engineer with a degree from the University del Valle in Guatemala and an MBA from INCAE Business School.
A retired career diplomat with over 35 years of experience. Former Minister of Foreign Affairs of Guatemala. Has a Degree in Legal and Social Sciences, with a Master’s Degree in Criminology, and a Doctorate in Strategic Security. Carlos is the Manager of Inter-Institutional Relations for the Grupo Onyx and Manager of the Mario López Estrada Foundation.
Members of the Board
Mario López Pérez is a member of the Board of Directors and CEO of Grupo Onyx, as well as a founding member of the Mario López Estrada Foundation. He is a Civil Engineer who graduated from the Universidad del Valle in Guatemala.
Mariana López de Lara is a member of the Board of Directors of Grupo Onyx, and is a founding member of the Mario López Estrada Foundation. She holds degrees in Economics and Business Administration, graduating Magna Cum Laude from the Universidad Francisco Marroquín in Guatemala.
Mario López Pérez is a member of the Board of Directors and CEO of Grupo Onyx, as well as a founding member of the Mario López Estrada Foundation. He is a Civil Engineer who graduated from the Universidad del Valle in Guatemala.
Grupo Onyx Leadership Team
Roberto Bianchi Wohlers
COO
He has been with the corporate consortium for over 15 years in several leadership positions and is currently serving as COO of Grupo Onyx. He is a member of the Board of Directors of several companies in the group. He has a Degree in Business Administration and a Master’s Degree in Finance from the London School of Economics (LSE).
Julio Hernández
Director and Head of Real Estate Paraguay
Julio Hernández serves as the Director and Head of the Paraguay Real Estate Division, in this role he is the Country Manager for investments in Paraguay and also Manager of the Paseo Las Galerías complex in Paraguay. He is a Civil Engineer who graduated from Universidad del Valle de Guatemala.
José Moreno
Director and Head of Real Estate Division
He has been a part of the corporate consortium for 18 years and currently serves as the Director and Head of the Guatemala Real Estate Division for Grupo Onyx. He has a degree in Business Administration from the Universidad Francisco Marroquín in Guatemala and a Master’s degree in Organization Management from the Universidad de Valparaíso in Chile.
Diego Donis
Director and Head of Renewable Energy Division
He has expertise in renewable energy and currently serves as the Director and Head of the Renewable Energy Division of Grupo Onyx, he has been with the consortium since 2013. He is a Civil Engineer and graduated from the Universidad del Valle in Guatemala. He also holds Master’s degrees in both Business and Real Estate Development from the Universidad Francisco Marroquín in Guatemala.
Marcos Luna
Director and Head of Cellular Maintenance Division
He has been a part of Grupo Onyx since 2014. He holds a degree in Business Administration with a specialization in International Business from the Universidad del Istmo and also holds a Master’s degree in Organization Management in Finance from the Universidad de Valparaíso in Chile.
Jorge Dighero
Director and Head of Telecom Division
He serves as the current Director and Head of the Telecom Division and outsourced services. He has worked for Grupo Onyx since 2008. He is an Industrial Engineer who graduated from the Universidad del Valle in Guatemala. He also has an MBA from the EAE Business School in Barcelona, Spain.
Francisco Moreira
Director and Head of Digital Services
He has more than 30 years of managerial experience and serves as the current Manager of Megaprint Guatemala. He has a Degree in Business Administration from Universidad Francisco Marroquín in Guatemala and a Master’s degree in Business Analytics from INCAE.
Miguel Garcés
Director and Head of Real Estate Development
He has taken part in over 500,000 square meters of management and construction of real estate projects. He is a Civil Engineer with a degree from the University del Valle in Guatemala. He also holds a Master’s degree in Structures, Foundations, and Materials from the Universidad Politécnica in Madrid and an MBA from the Universidad Francisco Marroquín in Guatemala.
Pablo Veliz
CFO
He has served the corporate consortium since 2013 in different project management and financial analysis positions and currently serves as CFO of Grupo Onyx. He is an Electronic Engineer with a degree from the University del Valle in Guatemala and an MBA from INCAE Business School.
Carlos Raúl Morales
Director and Head of Inter-Institutional Relations
A retired career diplomat with over 35 years of experience. Former Minister of Foreign Affairs of Guatemala. Has a Degree in Legal and Social Sciences, with a Master’s Degree in Criminology, and a Doctorate in Strategic Security. Carlos is the Manager of Inter-Institutional Relations for the Grupo Onyx and Manager of the Mario López Estrada Foundation.
