About Gary

Gary B. Rosen is the National Forensic Advisory Services Leader and the partner leading the valuation forensic and litigation practice in New York City. He provides accounting, audit and consulting services, including solvency, valuation opinions and asset recovery for numerous closely-held and public corporations, real estate entities, financial services institutions, business development companies, private equity funds, government agencies and international corporations.

Mr. Rosen has approximately 45 years of financial advisory, consulting, and public accounting experience with extensive background in fraud engagements, forensic accounting, complex litigation matters, shareholder/partnership disputes and other areas of investigative accounting.

He has testified as an expert witness in numerous litigation cases in a variety of federal and state courts regarding agreed upon procedures reports, fraud, lost profits, valuations, white collar crime, solvency, commercial and residential real estate, product liability, estate matters, shareholder and partner disputes and matrimonial matters. Where he is able to communicate complex financial information in a manner judges and juries can understand.

With extensive lecture and public speaking experience, Mr. Rosen is requested at national conferences on topics relating to internal controls, fraud and audits. He was a contributing author for one of Practitioners Publishing Company’s audit guides and also served as a professor at the graduate level at Monmouth University.

Mr. Rosen has also developed several continuing legal education seminars which he has presented to numerous law firms throughout the New York/New Jersey Metropolitan areas.

Professional & Civic Affiliations

  • American Institute of Certified Public Accountants (AICPA)
  • New Jersey Society of Certified Public Accountants (NJCPA)
  • New York State Society of Certified Public Accountants (NYSSCPA), Cannabis Committee
  • New York State Society of Certified Public Accountants – Manhattan/Bronx Chapter, President
  • NACVA Litigation Forensics, Board Member, Valuation Credentialing Board
  • Turnaround Management Association
  • Brookdale College, Advisory Board Member
  • Monmouth University Business Council
  • Association of Certified Fraud Examiners
  • Needlers Foundation, Executive Committee Member
  • USA 500 Club, Founding Member, Midtown East Chapter
  • Transformative Leadership in Disruptive Times Certificate Program at Pace University, Lubin School of Business, Former Member
  • National Association of Divorced Professionals, Executive Committee
  • Justice Brandeis Law Society, Board Member
  • NJCPA Society, 2023 Cannabis Interest Group Member
  • New Jersey Cannabusiness Association, Former Finance Chair
  • New Jersey Revenue Forecasting Advisory Commission, Former Commissioner
  • Western Monmouth Chamber of Commerce,Past President
  • Community Association Institute’s New Jersey Chapter, Past President
  • American Red Cross, Jersey Coast Chapter, Former Board Member
  • Savvy Ladies, Board Member and Chair of Audit Committee
  • Baryshnikov Arts, Executive Board Member

Practice Focus

Certified Arbitrator
Complex Litigation
Matrimonial Litigation
Professional Liability
CAM Audits
Breach of Fiduciary Responsibilities
Litigation Support
Anti-Bribery/Anti-Corruption, FCPA Compliance
Fraud Engagements
Solvency Analysis
Business Valuation
Asset Recovery
Financial Due Diligence
Expert Testimony
White Collar Crime
Economic Damages
Real Estate Matters
Construction Litigation
Lost Profits
Accounting Malpractice Claims
Class Action Claims
Royalty Audits

Industry Focus

Law Firms
Cannabis Industry
Real Estate Entities
Banks and Financial Institutions
Government Agencies
International Corporations
Court Appointed Neutrals
Insurance Carriers
Business Development Companies
Private Equity Funds
Pharmaceutical Companies
Oil & Gas Companies


Bachelor of Science, Accounting
Rutgers University

Testimony Experience


Additional Office Locations

Neptune, NJ
Executive Plaza West Building
3443 Route 66
Neptune, NJ 07753

Houston, TX
6002 Rogerdale Road
Suite 300
Houston, TX 77072