February 23, 2012 – The Association of Executive Search Consultants (AESC) has added AltoPartners, France-based Groupe Mercator, Quaestus Senior Management Search in The Netherlands and SommerGroup in Chile as its newest members. AltoPartners is an international alliance of independent executive search firms established in 2006. The alliance now spans 28 countries across the Americas, Europe, the Middle East and Asia Pacific. Groupe Mercator was founded in 1993 and is an expert in retained executive search for general management, finance, corporate administration and legal counsel roles. Quaestus Senior Management Search was formed in 2000 to serve a variety of sectors, including FMCG, retail, financial services, industrial, agrifood, chemicals, energy, IT, life sciences and medical technology. SommerGroup are a specialized, multidisciplinary team of over 30 professionals providing retained executive search services to both local and international companies in the financial services, retail, mining, utilities, energy and natural resources industries.