C. Darin "Darin" Jensen

Bryan focuses his practice on advising privately-held business and their owners with respect to mergers and acquisitions, entity formation and operation, sales, purchases and leasing of real estate, commercial real estate, private placements of securities, and wills, trusts and business succession planning. Bryan is a past member of the Board of Governors of the Colorado Bar Association.

Marc J. Musyl is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Marc J., who practices law in Denver, Colorado, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marc J. is held by other top lawyers in the same geographic and legal practice area.

Charles W. Gray is a top attorney recognized by Best Lawyers in the practice area(s) of Patent Law. Charles W., who practices law in Denver, Colorado, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Charles W. is held by other top lawyers in the same geographic and legal practice area.

Steve Cohen has overseen commercial real estate transactions for his clients, including acquisitions, dispositions, joint ventures, and debt and equity financings and restructurings, for over 35 years. He regularly represents developers, investors and sponsors in all industry classes, including office, multifamily, retail, industrial, mixed-use, hotels and raw land. As part of his transactional practice, Steve assists clients in structuring partnerships and limited liability companies, includ...

Michelle Brinner is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Michelle, who practices law in Denver, Colorado, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michelle is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/bergsieker-ryan-t/ .

Mr. Lyman is a trial attorney with a diverse litigation practice. Based on his substantial experience defending catastrophic personal injury claims, including serious brain, spinal cord and burn injuries, Mr. Lyman guides his clients through the complex process of investigation, discovery, mediation and trial. Energy and transportation companies rely on him to defend claims of personal injury and property damage arising out of mining operations, oil and gas exploration, oil field service oper...

James G. Heckbert focuses his practice on claims involving personal injury and wrongful death, ski injuries, auto and truck collisions, construction site negligence, medical malpractice, gas explosions, and defective products. In a distinguished career spanning four decades, Mr. Heckbert has secured eight jury verdicts in excess of $1 million. He has obtained numerous other settlements and judgments for amounts also exceeding $1 million. Mr. Heckbert is a member of the Multi-Million Dollar Ad...

Tom concentrates on complex litigation matters, including wrongful death, toxic tort, asbestos, insurance defense, and product liability. In addition, Tom has a particular emphasis on railroad litigation, including Federal Employers’ Liability Act (“FELA”) cases. Tom joined the Law Firm of Knudsen, Berkheimer, Richardson & Endacott in 1987 and was made partner in 1991. While in Nebraska, he also served as Adjunct Professor in Trial Advocacy, Evidence and Civil Clinic at ...

Lisa Shimel is a partner with the firm and has more than 30 years of experience in transactions and litigation in commercial, real estate, and lending matters. Her practice areas include banking, lending, and financial institutions, real estate, business operations and transactions, bankruptcy and creditor’s rights, and litigation. Ms. Shimel’s practice focuses on representation of bank and non-bank financial institutions including: Loan documentation for commercial and real estat...