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  • Partner, Eisner Advisory Group LLC
  • Partner, EisnerAmper LLP
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Eric Altstadter is an Audit Partner and Chair of the firm's Cannabis and Hemp practice within the Manufacturing and Distribution Group. He has more than 30 years of experience working with public companies and privately held businesses throughout the country.

Eric has helped numerous clients through the complex financial reporting and compliance issues associated with the filing of registration statements with the Securities and Exchange Commission (SEC) and raising capital from other groups. He has significant experience with companies in the financial services, technology, manufacturing and distribution, and retail industries.

Eric is a frequent speaker on accounting, auditing, and business topics. Actively involved in cannabis industry events he was recently named an amNewYorkMetro Cannabis Industry power Player. He is regularly recognized by the Long Island Business News (LIBN) in their Who's Who in Accounting and Who's Who in Audits editions. Eric was previously named by LIBN as one of the “Around 50” honorees in recognition of his leadership and support of Long Island businesses and the community.



  • Audit & Assurance
  • SEC Reporting
  • Manufacturing & Distribution
  • Cannabis & Hemp
  • Financial Services
  • Employee Benefit Plans
  • Fintech
  • Technology
  • Life Sciences
  • Mergers & Aquisitions

Credentials & Education

  • Certified Public Accountant (CPA)
  • University at Buffalo: BS


  • American Institute of Certified Public Accountants
  • New York State Society of Certified Public Accountants: Professional Ethics Committee

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