Houston | Dallas | Austin

McCullough Sudan is a corporate transactions law firm with practical, business-minded attorneys. As transactional attorneys, we are effective at closing business deals while protecting the legal and business interests of our clients. In our general counsel role, we provide prompt, actionable advice to enable our clients to make timely business decisions. By taking the time to understand a client’s business, we help identify and mitigate potential risks before legal problems fully develop.


Texas enjoys a thriving, diversified economy that continues to welcome companies from around the world and fosters technological development and startup companies. Texas cities continue to top charts in various categories: Houston ranked most diverse economy, Austin named best place to start a company, and Dallas has been ranked the top “destination city” attracting companies and families from around the country. Texas regularly has long held a reputation as a business-friendly state and regularly ranks as one of the best places to do business in the United States.

As a corporate boutique, we and our clients are a microcosm of the larger Texas economy. That is why we strive to provide you the corporate legal services you and your company need for the changing economy. Our attorneys have experience across diverse industries such as energy, manufacturing, petrochemical, real estate development, software, information technology, and even emerging technologies like blockchain. Our experience is international while being plugged into the local markets at a very personal level.

We understand that clients need timely, responsive advice from their attorneys. That’s why the motto on our website has long been “at the speed of business.” As we enter a new decade, we recognize that business is facing frequent disruptions and rapid change. We are committed to staying ready to serve you and be responsive as you and your company adjust to the ceaseless changes of the market.

To better serve you, we are bolstering our offerings in emerging technologies; regulatory compliance (e.g. Foreign Corrupt Practices Act); and engineering, procurement and construction while maintaining our core services of mergers and acquisitions, international business, general counsel services.



Mergers and Acquisitions

We represent buyers, sellers and investors in corporate mergers, acquisitions and divestitures, as well as private securities offerings and acquisition finance.

International Business

Our law firm meets the need of multinational businesses by providing practical, creative and cost-effective advice for multinational companies doing business in Texas and beyond.


McCullough Sudan attorneys help technology companies protect their trade secrets and intellectual property as well as assist tech companies commercialize their innovations with licensing and other agreements.


McCullough Sudan attorneys regularly represent domestic and international energy companies, including exploration and production companies, hydraulic fracturing, oilfield services, oilfield product, controls software and offshore services companies.