About William

William Scally is partner-in-charge of Litigation Services in Marcum’s Boston, Massachusetts, office. He has more than 19 years of management consulting experience advising clients on a broad range of business issues.

As a valuation specialist, Mr. Scally provides financial, economic, and statistical services to companies, with a focus on equity and debt valuation, business enterprise valuation, business model due diligence, and contract compliance. He has significant experience applying valuation principles to assist companies pursuing strategic initiatives and to analyze economic damages pursuant to government and commercial litigation disputes. Applications include the valuation of closely held businesses, patent infringement, trade secret misappropriation, joint venture disputes, breach of contract, business and asset impairment analyses, and purchase-price disputes. His experience includes engagements across a broad array of industries, including private equity and early-stage ventures, service, software, technology, manufacturing, financial services, life sciences, and healthcare.

Mr. Scally has been qualified as an expert witness and has testified on matters involving business enterprise valuation, trade secret, trademark, patent, partnership, employment, personal injury, and contract disputes. He formerly worked in the Forensic Services Advisory practice of a “Big 4” accounting firm in Boston.

Professional & Civic Affiliations

  • CFA Institute
  • Boston Security Analysts Society
  • Boston Patent Law Association
  • Boston Bar Association
  • American Bar Association

Articles and Publications

  • Litigation Services Handbook: The Role of the Financial Expert, Sixth Edition, Co-author of Patent Infringement Damages chapter, John Wiley & Sons,
    Inc., 2017
Practice Focus

Intellectual Property
Economic Damages
Commercial Litigation
Business Valuation
Shareholder Disputes

Industry Focus

Litigation Support


Master of Business Administration
Boston College

Bachelor of Science, Control Systems Engineering
United States Naval Academy

Accreditations & Designations

Chartered Financial Analyst (CFA) Charterholder

Curriculum Vitae