Lass_Zach

Zach L. Lass

Lass_Zach

Zach L. Lass

Counsel

Denver + 1 720 274 3156

Zach Lass represents clients on a broad range of complex civil, criminal, administrative and regulatory matters. He specializes in crisis management, helping clients navigate inquiries from Congress, the Department of Justice, other federal and international agencies and regulators, and state attorney general offices. He provides strategic counsel to clients involved in government investigations, internal investigations, litigation, as well as regulatory compliance matters. Mr. Lass has represented clients across a variety of industries, including pharmaceutical and healthcare companies, energy and natural resources companies, environmental organizations, and technology and media companies.

Mr. Lass also maintains an active pro bono practice. Most notably, after a five-year effort, he secured Asylum for a Honduran woman and her young daughter, presenting compelling arguments to both the government and court.

Prior to joining the firm, Mr. Lass joined clerked for the Honorable Chief Justice Brian D. Boatright of the Colorado Supreme Court.

While pursuing his legal education, Mr. Lass was a student attorney in the Environmental Law Clinic at the University of Denver Sturm College of Law and a law clerk in the US Attorney's Office for the District of Colorado. He also worked as a law clerk for a national firm. Previously, Mr. Lass worked as a Fly Fishing guide and managed an outfitting business, travelling the globe to host clients in gold medal fisheries. 

Recognition

  • Selected by peers for inclusion in Best Lawyers: Ones to Watch for Environmental Law (2025 and 2026), Natural Resources Law (2025 and 2026) and White-Collar Criminal Defense (2026).

Insights & News

View all of Zach's insights & news

Credentials

  • Education

    • JD, University of Denver Sturm College of Law, 2019

      Order of the Coif

      Rocky Mountain Mineral Law Foundation Scholarship, Dean's Scholarship, Charles F. Brannan National Endowed Scholarship, Jan M. & Marjorie G. Laitos JD Endowed Scholarship

      Scholastic Excellence Awards in Contracts, Administrative Law and Federal Public Lands Law

      Outstanding Student Lawyer Award, Environmental Law Clinic

      Senior Articles Editor, Executive Board and Management Committee, Denver Law Review

    • BA, Sociology, University of Colorado at Boulder, 2013

  • Admissions

    • Colorado

  • Clerkships

    • The Hon. Brian D. Boatright, Colorado Supreme Court, 2019 - 2020

Credentials

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