Marc Lassman is a trained mediator and international legal professional with over 18 years of experience leading complex multinational justice and dispute-resolution initiatives across Europe and Eurasia. A licensed U.S. attorney with more than seven years of domestic litigation experience, he holds an LL.M. in International Law from the University of Nottingham in the UK, as well as degrees from the University of Colorado (Law) and the University of California, Berkeley (Bachelor's degree). Marc combines strong legal expertise with practical, negotiation-focused communication skills. He has completed intensive mediation training at Harvard University Extension School and international commercial mediation programs with SAGE Mediation in Singapore. Further, he is a Certified Level 1 Mediator with the Sage Mediation Institute for Leadership Education (SMILE).

Marc also brings approximately three years of professional experience working in Japan across legal, academic, and consulting roles. He served as Executive Director of the TOMODACHI Initiative (a public-private partnership established through the U.S. Embassy in Japan), taught Legal Research and Writing at Temple University Law School Japan, and lectured for the Tokyo Bar Association on comparative legal practice. In addition, he has provided executive-level legal and business English training to senior professionals at organizations including Tokio Marine, Sumitomo Chemical, Accenture, and AIG. Drawing on both international and Japan-based experience, Marc’s training is designed specifically to support Japanese mediators in developing practical, professional English skills for domestic and cross-border mediation practice.