Mark Griswold, CPA

Senior Manager


Mark has more than 18 years of public accounting experience, providing international tax consulting services and helping clients as they expand their business outside of the U.S. He also assists foreign companies to navigate the U.S. tax system as they begin doing business in the United States.

When you work with Mark, you can expect him to take the time to fully understand the details and background of your business as he identifies solutions to your international tax issues.

Outside of work, Mark enjoys running, hiking and mostly just being in the mountains.



  • American Institute of Certified Public Accountants
  • Colorado Society of Certified Public Accountants


  • Certified Public Accountant


  • Bachelor of Science, Accounting – Colorado State University, Fort Collins, CO


Client Work

  • Works in a variety of industries, including international taxation, manufacturing and professional services.
  • Experience with federal tax incentives, including IC-DISC compliance and commission calculations.
  • Works with cross-border issues for U.S. companies doing business in Canada.


Community Involvement

  • Boulder Valley Rotary Club
  • Boulder Valley Rotary Club Foundation, Treasurer
  • Rocky Mountain Rescue Group