Garland W. "Sonny" Allison

Stephen J. Dietrich is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law and Mergers and Acquisitions Law. Stephen J., who practices law in Denver, Colorado, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stephen J. is held by other top lawyers in the same geographic and legal practice area.

Darin J. Gibby is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Darin J., who practices law in Denver, Colorado, has been recognized since 2013. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Darin J. is held by other top lawyers in the same geographic and legal practice area.

Larry Free has practiced exclusively in the area of Workers’ Compensation since 1995. His understanding and appreciation of workers began through his own employment history. In his early years, he worked at a variety of jobs in the food service industry, cabinet making, carpentry, appliance repair, and delivery. He originally joined the firm as a “runner” and worked as a clerk during law school. He became an associate following graduation and was admitted to partnership in 1...

Timothy M. Kratz is a top attorney recognized by Best Lawyers in the practice area(s) of Employment Law - Management. Timothy M., who practices law in Denver, Colorado, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Timothy M. is held by other top lawyers in the same geographic and legal practice area.

Garth Jensen has represented issuers in initial public offerings and other equity and debt offerings aggregating over $13.5 billion of proceeds. He has represented nearly 20 public companies listed on the New York Stock Exchange, NASDAQ and foreign exchanges, representing them in various mergers, acquisitions and other transactions and offerings. He is a trusted counsel to senior management and boards of directors of public and private companies, advising on corporate governance, leadership s...

Stefan D. Stein is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation and Litigation - Securities. Stefan D., who practices law in Denver, Colorado, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Stefan D. is held by other top lawyers in the same geographic and legal practice area.

Ms. Treece, a founding Member of Brown Gren Abraham & McCracken, LLC, is a trial lawyer with over 40 years of litigation experience. Ms. Treece is recognized as one of the premier workers’ compensation defense lawyers in the State of Colorado. Ms. Treece began her legal career as a Deputy District Attorney and as a law clerk to the former Chief Judge of the United States District Court for the District of Colorado. Ms. Treece then gleaned experience in the civil defense arena. She s...

Mr. Katz joined Burg Simpson in September 2005 after six years with the New York law firm of Seeger Weiss LLP, in which he was a partner. Mr. Katz focuses his practice primarily in the areas of complex, pharmaceutical mass tort, and class action litigation including consumer protection, securities fraud, products liability, and commercial litigation. In addition to his varied professional experience, Mr. Katz is a frequent speaker on electronic discovery, class actions, and pharmaceutical lit...

David C. Gartenberg is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Labor and Employment. David C., who practices law in Denver, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David C. is held by other top lawyers in the same geographic and legal practice area.

Phil is an AV-rated® trial lawyer. He has tried multiple jury and bench trials and has argued cases in the Colorado Supreme Court, the Colorado Court of Appeals, the Georgia Court of Appeals, the Illinois Appellate Court, the United States District Court for the District of Colorado, the United States District Court for the Northern District of Georgia, and the state trial courts of Colorado, Georgia and Illinois. Phil is licensed to practice before all state courts of Colorado and Georgi...