Mark A. Weston has over 25 years of advisory, assurance and income tax experience advising public, private and public sector clients in a variety of industries. He has qualified as an expert witness and given testimony in the Supreme Court of British Columbia and the Court of King’s Bench of Alberta and the Tax Court of Canada.

Mark has authored valuation related course material and instructed numerous accounting, auditing and valuation related courses on behalf of the American Society of Appraisers, the Canadian Institute of Chartered Accountants, the Institute of Chartered Accountants of England and Wales, and the Canadian Institute of Chartered Business Valuators.

Mark is a Partner at Davidson & Company and leads their Advisory, Valuation, Litigation Support and Sustainability and ESG practices. He was previously a partner at a large international accounting firm.


  • McGill University (Montreal, Quebec) Bachelor of Arts degree in Economics, 1991
  • Cornell University (USA) Certificate in Blockchain Studies, 2019
  • CPA Canada, ESG and Sustainability Fundamentals, Certificate, 2022 and ongoing
  • University of Toronto, Rotman School of Management, Sustainability Leadership: Innovation for Growth, (2023)


  • Chartered Accountant (CA), 1998
  • Chartered Business Valuator (CBV), 2002
  • Chartered Professional Accountant (CPA), 2015

Specializes in
Business valuation and Litigation support


Business valuation in the context of:

  • The valuation of intangible assets and intellectual property
  • Financial reporting (purchase price allocations and impairment testing)
  • Employee share purchases, Tax reorganizations
  • Fairness Opinions, Mergers and acquisitions, Capital Raises
  • Expropriations

Litigation support (quantification of economic losses and financial damages) in the context of:

  • Patent infringement, Breach of contract
  • Construction delays, Expropriation, General Damages
  • Shareholder/partner disputes, Matrimonial disputes
  • Business interruptions
  • Usurious interest claims
  • Personal injury/ Fatalities


  • Cannabis
  • Construction
  • Cryptocurrency
  • Dental and Health Care
  • Engineering
  • Financial Services
  • Manufacturing
  • Oil and Gas
  • Real Estate and Property
  • Retail & Services
  • Technology and Communications
  • Transportation
  • Utilities and Natural Resources