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Mario T. Trimble


With a background in client services, Mario leverages his training and experience to facilitate the effective management of successful municipal bond financings for a variety of governmental and other clients.

Mario concentrates his practice in the area of municipal finance, acting primarily as bond counsel and disclosure counsel for various Colorado governments and related entities. For more than a decade, Mario has represented an average of 30 different Colorado public entities of varying sizes per year on financings ranging in scope from $450,000 to $150,000,000.

Mario is a member of the Denver Bar Association Board of Trustees, the board of governors and the executive committee of the Center for Legal Inclusiveness, a Colorado nonprofit corporation dedicated to increasing diversity and inclusiveness in the legal profession which has received national and local recognition for its continuing commitment to inclusive excellence. He is currently its treasurer.
  • "Tax Reform Proposals Affect Municipal Bonds," CML Newsletter (Vol. 38, No. 25), December 14, 2012, (co-author)
Speaking Engagements
  • “Financing Strategies, Park County Case Study,” Colorado Government Finance Officers Association, 2017 (panelist)
  • “New SEC Rules: Should You Register as a Municipal Adviser? Are Your Disclosures in Compliance?” Colorado Municipal League Annual Seminar for Municipal Law, 2014 (panel moderator)

  • Bond counsel to a county for the issuance of $163 million of refunding and improvement certificates of participation
  • Bond counsel to an urban renewal authority in connection with its issuance of over $17million of state sales tax revenue bonds in a first of its kind offering
  • Bond counsel to a city in issuance of over $22 million of taxable Build America Bonds
  • Bond counsel to a school district in a $29.5 million offering of general obligation improvement and refunding bonds
  • Bond Counsel to a fire protection district issuing over $30 million of general obligation bonds
  • Bond counsel to a state in issuance of $150 million of tax and revenue anticipation notes
  • Assisted a water district with a $29 million bond offering as part of a multi-year finance plan involving approximately $60 million of tax-exempt bonds
  • Bond counsel to a county in connection with $17.5 million of certificates of participation in a lease
  • Bond counsel to an urban renewal authority in connection with the issuance of over $15 million of taxable and tax-exempt revenue bonds
  • Special counsel to a municipal water utility in connection with a $25 million loan from the Colorado Water Resources and Power Development Authority

  • Super Lawyers® Rising Star, 2014-2015