Mark Arensberg is a veteran business transactional attorney with more than four decades of experience advising companies on structuring, contracts, and complex commercial matters. He has been practicing since September 1982 and is preparing to reach his 44th anniversary in the legal profession in 2026. His professional path reflects a steady focus on providing practical legal support and building long-term client relationships.
As a lawyer, Mark has developed a strong background in business transactional law, with an emphasis on client-focused counsel and consistent service. He was admitted to the United States Tax Court in December 1986, which expanded his ability to manage detailed financial and tax-related legal matters. Over time, he has worked across a wide range of industries while also maintaining involvement in literacy initiatives, volunteer efforts, and family life.
Arensberg has consistently focused on business law and transactional matters throughout his career. For over 43 years, he has worked with entrepreneurs, corporations, and professionals across the United States, providing legal insight that reflects real business needs. His early admission to the United States Tax Court strengthened his ability to handle complex financial and tax-related issues.
Mark's long-standing representation of BoConcept of Denmark reached its 30-year milestone in September 2024. He has also provided legal services to All About Doors and Windows since 1985. Relationships of this duration are uncommon and demonstrate his ability to provide steady value over time, even as economic and regulatory conditions evolve.
After serving as General Counsel to a group of public and private companies providing investment advisory, asset management, and trust services, Arensberg Law Offices, P.A. was established in January 1990. The firm was created to deliver high-quality legal services without the complexity often associated with larger firms. It focuses on providing accessible and reliable legal guidance to businesses, professionals, and individuals.
At the firm, clients receive direct engagement, practical advice, and continuity in representation. Its referral network extends across the United States and internationally, allowing clients to access specialized expertise when needed while maintaining a central point of coordination.
Mark Arensberg, lawyer, focuses on business law and transactional support, helping clients build, manage, and develop their enterprises. His services include business structuring, contract development and negotiation, and drafting and reviewing agreements designed to protect client interests while supporting long-term stability.
Arensberg also guides franchising, including the creation of franchise systems and the preparation of required disclosure documents and registrations across jurisdictions. His experience extends into commercial real estate, where he advises on development projects, acquisitions, property management, sales, and lease negotiations.
In addition to legal services, Mark offers business consulting that includes strategic planning, financial restructuring, private placements, and mergers and acquisitions advisory services. This range of work allows him to serve not only as legal counsel but also as a business advisor, offering practical insight alongside legal analysis.
He has served as an active board member for a bank and has also participated on its commercial loan review committee, contributing to oversight and financial evaluation.
Outside of Arensberg's legal practice, he maintains a strong commitment to community involvement. For more than 20 years, he and his wife, Renny, have supported KVC Behavioral Healthcare, contributing both time and financial resources to programs that assist foster children and families in crisis across multiple states.
Literacy initiatives represent another key area of focus. Mark has served as a reading mentor with Lead to Read, working directly with children to strengthen reading skills and encourage long-term engagement with education. He has also contributed to Reach Out and Read and previously participated in the One-to-One Challenge.
Arensberg's philanthropic efforts extend across several areas. He has supported youth-focused initiatives, including the Girl Scouts, as well as broader programs that encourage growth and opportunity for young people. His contributions also extend to educational institutions, including the University of Kansas Endowment, the University of Kansas Alzheimer’s Disease Research Center, and local school foundations, thereby strengthening academic programs and student resources.
Mark has also been involved with health and social service organizations, supporting efforts led by the Leukemia and Lymphoma Society and the AdventHealth Foundation. His support extends to faith-based and outreach initiatives, including Catholic Charities, which assists underserved populations and individuals facing difficult life circumstances.
In addition, Mark Arensberg, Attorney, provides pro bono legal services to the Gracious Promise Foundation, assisting individuals transitioning from incarceration. His past involvement as a youth sports coach reflects a direct approach to community engagement, working with young people in structured environments.
Outside of his professional and community commitments, Arensberg maintains an active lifestyle, including skiing, boating, and cycling. He will soon celebrate his 46th wedding anniversary. After raising four children, he and his wife are now enjoying time with their nine grandchildren. He is also a dedicated dog owner and currently cares for two Golden and Labrador retriever mixes.
Across more than four decades of legal practice, Arensberg has built a career defined by consistency, experience, and long-term client relationships. His ability to combine legal strategy with practical business understanding has positioned him as a trusted advisor in complex transactional matters.
His continued involvement in literacy programs, charitable work, and community service reflects a broader commitment beyond his professional responsibilities. As he approaches his 44th year in practice, his work continues to demonstrate a disciplined and service-oriented approach to both law and community engagement. Mark Arensberg continues to maintain this balance through his ongoing professional and personal efforts.
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