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.


These are troubling times. However, I have personally experienced way worse economic and social catastrophes in my homeland of Venezuela, although -granted- not so sudden.  I can tell you that as a society, at least in Texas, we are very well prepared to deal with the economic hit, and the resulting social disruption that will inevitably come.

I am convinced that as citizens of this great nation, we are prepared both spiritually and materially. This town, and really this country, has huge reserves of good people, ingenuity, and wealth.  Just like in times of a hurricane, when you get armies of boats coming out of nowhere to get you out of your flooded street, we will help each other and survive.

We will make it to the other side!

Stay home and God bless y’all!

Sudan Maccio


Our hearts go out to those directly affected by the Coronovirus. COVID-19 has given rise to global concerns about the impact on business operations. Our first priority is the comfort and safety of our clients and colleagues. We remain open and available to work with you and new clients. If you have questions about business disruptions, business continuity, force majeure or other needs we are happy to offer a free consultation.  We are able to assist you remotely through phone or video conference so that “face-to-face” communication is not disrupted.



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.