Dealer In contrast to a broker, a dealer is a person or firm that buys or sells securities for their own account - i.e., a principal. Home Resources Startup Law Dictionary Dealer Return to Glossary Need legal help? Schedule a free consultation with a world-class startup attorney on LawTrades. LET'S CHAT Roy G. Business Attorney Heather N. Business Attorney Jared S. Business Attorney Tell us about your project We'll connect you with a vetted attorney in just a few minutes. Trusted by top companies like :