Mark Arensberg

Mark Arensberg is a business transactional attorney with over four decades of experience advising companies on structuring, contracts, and complex commercial matters. He has practiced since September 1982 and is preparing to reach his 44th year in the legal profession in 2026. Mark has built his career in transactional business law, with a steady focus on client service and long-term professional relationships. After being admitted to the United States Tax Court in December 1986, he developed the ability to manage complex legal and financial matters across different industries while remaining active in volunteer work, literacy efforts, and family life. Arensberg's practice has consistently focused on business law and transactions. For more than 43 years, he has advised entrepreneurs, corporations, and professionals across the United States, offering guidance based on practical business needs. His early admission to the Tax Court strengthened his ability to handle detailed tax and financial issues. Attorney Mark Arensberg has maintained long-term relationships with clients, including representing a Denmark-based company for 30 years as of September 2024 and providing legal services to another business since 1985. These relationships reflect steady performance over time. After serving as General Counsel for a group of companies involved in investment advisory, asset management, and trust services, he established his own law office in January 1990. The firm was created to provide reliable legal services without the complexity of larger firms, offering direct communication, practical advice, and continuity. Its referral network supports clients across the United States and internationally. Lawyer Mark Arensberg's work includes business structuring, contract drafting and negotiation, franchising systems, and commercial real estate matters, including development, acquisitions, and leasing. He also provides consulting in strategic planning, financial restructuring, private placements, and mergers and acquisitions.