Cornerstone Brussels is one of 60 offices worldwide of the Cornerstone International Group, a global member of the Associatio ... n of Executive Search and Leadership Consultants (AESC). Cornerstone is named by Forbes as one of the Best Management Consulting Firms in Executive Search in 2016, 2017 & 2018 and ranked by Hunt Scanlon in the top Global 25 groups in 2018. read more