Douglas R. McCullough

[email protected]

About Douglas R. McCullough

Doug McCullough is a mergers and acquisitions attorney representing both sellers and buyers in high-impact corporate transactions. A CJMH Partner since 2024, he provides specialized expertise in tax-efficient M&A, investment, and financial deals, drawing on a Master of Law in Taxation (LL.M.).

Doug often partners with global companies expanding into the United States, enabling them to successfully navigate cross-border corporate and tax planning, minimize taxation, and effectively adapt their corporate and legal practices to the American market. As legal counsel for both domestic and international negotiations, his industry experience spans energy, oilfield and offshore services, manufacturing, engineering and environmental services, technology products and services, medical technology, and healthcare.

An entrepreneurial mindset provides Doug with unique insight into business development and growth. He founded and managed a corporate transactions law firm for nearly a decade, enabling him to serve as a true collaborator in corporate strategy execution. Over his career, he has provided a diverse selection of private investors, venture capitalists, and private equity clients with strategic legal support laying the groundwork for success.

Doug holds an LL.M. in Taxation from Southern Methodist University School of Law and a Juris Doctor from Texas Tech University School of Law. He earned his bachelor’s degree from Indiana University. Beyond the legal arena, Doug enjoys hiking and spending time outdoors with his family. He has also completed nine marathons over his lifetime and is a family genealogy enthusiast.


  • Regularly negotiate and draft all aspects of asset and stock purchase agreements; Structure sales, acquisitions, and mergers to ensure the tax efficiency of such transactions; Due diligence.
  • Regularly assist non-resident companies and investors plan, structure, and execute inbound investments and acquisitions into the United States; Assist US companies expanding into new markets abroad.
  • Regularly negotiate and draft all aspects of international sales representative and distribution agreements, joint venture agreements and other international business transactions.
  • Draft, review and negotiate a wide variety of commercial contracts including agreements for contract manufacturing, master services agreements, joint ventures, sales representative, distributorships, OEM, software development, research & development, intellectual property licensing, and employment.
  • Plan and structure the tax aspects of corporate mergers, acquisitions, asset divestitures, inbound investments, and other corporate reorganizations
  • Conduct tax research and analysis for C corporations, S corporations and partnerships.


Southern Methodist University School of Law, LL.M., Taxation

Texas Tech University School of Law, J.D.

Indiana University, B.A.

Bar Admissions

State Bar of Texas

State of New York


Canada-Texas Chamber of Commerce

British American Business Council


IR Global

Practice Areas