Calvin Shannon, CPA, CVA

Direct: 651-287-6327

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Calvin Shannon, CPA, CVA, has over 20 years of experience providing tax and audit services. With a deep understanding of the challenges cannabis clients face, Calvin is skilled at working with them to develop and implement innovative solutions.

Calvin assists cannabis businesses to address the industry’s unique and ever-evolving issues. He enjoys working with clients to understand their business needs and provide timely solutions. In addition to being a Certified Public Accountant, Calvin is accredited in business valuation.

Professional Experience

Boeckermann Grafstrom & Mayer, LLC, Certified Public Accountants
Bloomington, Minnesota
2012 – Present

Johnson, West & Co., PLC, Certified Public Accountants
St. Paul, Minnesota
1999 – 2012

Licensing, Memberships & Honors

  • Licensed as a Certified Public Accountant in Minnesota
  • Certified Valuation Analyst
  • Member, American Institute of Certified Public Accountants


  • BS, Major: Accounting
  • College of Business, Minnesota State University, Mankato, Mankato, MN, 1999