Sean Gallagher

  • award


Sean Gallagher is a commercial trial lawyer with a knack for translating complex issues into plain English. Recently, Sean was named to Super Lawyers’ 2020 Texas Rising Stars list, an honor no more than 2.5 percent of lawyers in the state receive.

Sean’s practice focuses on high-stakes business litigation over a wide range of commercial issues, including fraud, alter ego, breach of contract, breach of fiduciary duty, partnership disputes, business divorces, fraudulent transfers, and Lanham Act claims.

Sean’s cases have also helped shape the law governing many of these commercial issues. For instance, in 2019, Sean Gallagher and Tyler Bexley briefed certified questions on an issue of first impression to the Nevada Supreme Court as to whether the alter ego doctrine and doctrine of improper dominion and control applied to Nevada entities.  The Court rendered a unanimous opinion in favor of their clients. The underlying dispute was also profiled in Forbes magazine.

Sean’s recent experience includes several other high-profile cases and successful results:

  • Served as part of the team led by Pete Marketos representing AT&T against false advertising claims relating to 5G Technology filed by Sprint in the Southern District of New York.
  • An award of summary judgment from the Nevada Bankruptcy Court finding that his client’s $4,102,597.75 debt was nondischargeable due to actual fraud under Section 523(a)(2)(A) of the Bankruptcy Code.
  • A seven-figure plaintiff’s judgment in a fraudulent transfer and alter ego case before the Dallas County District Court (confidential settlement and forbearance agreement entered into post-judgment).
  • A plaintiff’s judgment, including award of attorneys’ fees, for breach of contract on behalf of a private investment and management firm.

Prior to joining Reese Marketos, Sean was an associate at a nationally recognized litigation firm in Dallas, Texas. During his time there, Sean honed his skills as a trial lawyer and obtained a number of favorable outcomes for his clients, including a take-nothing judgment as well as a complete summary judgment the evening before trial.


  • Rising Star by Super Lawyers (Thomson Reuters) 2020


University of Texas School of Law

Juris Doctor, 2016

University of Texas at Austin

Bachelor of Arts in English and Philosophy, with honors, 2012


U.S. District Court for the Northern, Eastern, and Southern Districts of Texas