About Our Firm Founded in 2008, Southeastern-based Aberdeen Advisors is a leading mergers and acquisitions firm, specializing in sell-side transactions, representing successful companies, across all industries, with revenues in the $ 5 million to greater than $ 100 million range. Aberdeen’s advisory team guides business owners through the complex process of selling a business. Comprised of former business owners and operators, Aberdeen’s deal teams have a comprehensive understanding of the sales process.