Prof. Agustí Lledós (Barcelona, 1955) obtained a Ph. D. in Chemistry from the Universitat Autònoma de Barcelona (UAB) in 1984. He entered into the field of organometallic chemistry during a postdoctoral stay at the “Laboratoire de ChimieThèorique” of the “Université de Paris-Sud” (1985-86). In 1987 he started at UAB a research group devoted to the computational study of organometallic reactivity and homogeneous catalysis. He was appointed Full Professor of Physical Chemistry at UAB in 1994. The UAB group has pioneered the collaborative experimental-theoretical research in organometallic chemistry. A significant part of Dr. Lledós’ scientific production (more than 350 articles) has been published in collaboration with experimental groups. He has also contributed to the formation of researchers in computational organometallic chemistry (25 supervised PhD Thesis) and to the training in computational techniques of experimental researchers (more than 30). He has served asVice-president of the Spanish Chemical Society (RSEQ) between 2012 and 2017. In 2008 he was awarded with the RSEQ-Bruker Award for Physical Chemistry, in 2018 with the Gold Medal of the Organometallic Group of the RSEQ and in 2019 he received the Narcís Monturiol Medal for the Scientific Merit from the Generalitat de Catalunya. Dr. Gregori Ujaque was born in Torres de Segre (Lleida, Catalonia) in 1971. He obtained his Ph.D. in Chemistry from the Universitat Autònoma de Barcelona (UAB) in 1999 on the field of computational homogeneous catalysis under supervision of Profs. A. Lledós and F. Maseras. He then spent a couple of years at the University of California, Los Angeles (UCLA) with Prof. K.N. Houk working on rational design of catalytic antibodies and organic reactivity using computational chemistry. He returned to UAB contracted by the “Ramon y Cajal” program, obtaining a permanent position in 2007. His main interests are the application ofcomputational methods to the understanding of catalysis, using QM and QM/MM methods and more recently AIMD and QM/MM-MD methods. He enjoys working in several topics as C-C or C-N cross-coupling, hydrogenation, hydroamination, or any type of addition reactions, etc. Several metal catalysts have been objective of his studies, with gold occupying a prominent position; he is also focusing on first row transition metals and main group elements. His interests have recently broadened to modeling Supramolecular Catalysis. He served as associated editor of “Anales de Química” (2018-2020), the journal of the Spanish Chemical Society. Nowadays he is the President of the Catalan Chemical Society (SCQ).