James Stark represents and advises entrepreneurs, Illinois business start-ups, closely held and family owned businesses, multi-national companies, and non-profit associations on a broad range of business transactional matters. He serves businesses in numerous industries, some of which include healthcare, transportation, construction, financial services, entertainment and attractions, retail, hospitality, apparel and fashion, brokering, and technology (new product, software, and hardware invention, design, development, funding, licensing, and sale).

As a Chicago corporate attorney, he practices in areas such as new business formations and development, limited liability company operating agreements and bylaws, corporate infrastructure management, contract drafting and negotiation, mergers and acquisitions, customer and supplier contracts, buy-sell agreements, business succession planning, employment and non-compete agreements, employment law, venture capital and private placement offerings, financing and lending, licensing, regulatory compliance, merchant services, domain name disputes, and legislative undertakings.