Michael Weiner

Michael Weiner

Denver P +1 (303) 352-1156 F +1 (303) 629-3450 Palo Alto P +1 (650) 565-2233 F +1 (650) 857-1288



Michael is a partner in Dorsey's Corporate Group, the head of the Corporate department in Denver and co-head of the cannabis industry group. His practice focuses on the representation of emerging growth companies in the areas of corporate formation, mergers and acquisitions, venture capital and angel finance, public offerings, and securities regulation. Michael represents public and private companies in a variety of industries, including biotech/medical device, renewable energy, cannabis, social media and software.

He counsels Boards of Directors and management teams in the areas of equity compensation, corporate governance, Sarbanes-Oxley and other regulatory and disclosure matters. Michael advises clients on intellectual property licensing and commercial contract matters. 

Michael serves on the Board of Directors of the Colorado BioScience Association and the Board of Adjustments and Appeals for the City of Greenwood Village. He is an adjunct professor at the University of Colorado School of Law co-teaching drafting of venture capital agreements.

Education & Admissions

University of California, Los Angeles (UCLA), School of Law (J.D., 1994)

University of Pennsylvania (1990), B.S. Economics, Wharton School of Business; B.A. American History, College of Arts & Sciences


  • Colorado
  • California

News & Resources


USDA Releases Interim Rules for Domestic Hemp Production
Updated Draft of California’s Cannabis Regulations Could Stifle IP Licensing

News & Press Mentions

Dorsey Partner Michael Weiner Discusses Recent Legislation in Colorado to Provide State Loans to Equity Cannabis Businesses on Podcast
Dorsey Partner Mike Weiner Discusses Cannabis Investment
Mike Weiner: The legal hemp industry still has its challenges for growers
Dorsey Partner Mike Weiner Comments on Banking Rules for Hemp
Dorsey Partner Mike Weiner Remarks on USDA Hemp Growing Rules
Dorsey Partner Mike Weiner Remarks on No Hemp Growing in S. Dakota
Dorsey Partner Mike Weiner Comments on USDA Hemp Rules
Dorsey Partner Mike Weiner Discusses Cannabis Branding and IP
Dorsey Launches New Cannabis Blog
Dorsey Partners Weiner and Lynyak Discuss Sessions Recinding Cole Memo
Dorsey Partner Michael Wiener Comments on Legalization of Recreational Marijuana
Dorsey Partner Mike Weiner Discusses Colorado Bill for Small Business Crowdfunding
Dorsey’s Cleantech Group Leaves Their Footprint from the West Coast to the Midwest and Back!
Dorsey & Whitney Named Capital Markets Law Firm of the Year-North America by Lawyers World Law
Facebook IPO Interview on NPR
"Facebook Execs Could Be Headed To Denver," CBS Denver

Industries & Practices

  • Cannabis
  • Capital Markets
  • Corporate Governance & Compliance
  • Emerging Companies
  • Food, Beverage & Agribusiness
  • Healthcare & Life Sciences
  • Mergers & Acquisitions
  • Sustainability
  • Technology
  • Technology Commerce


  • Listed in Best Lawyers in America©, Venture Capital Law, 2022-2023
Michael Weiner