Sean Tanner Expert Witness

Contact this Expert Witness

  • Company: Keegan Linscott & Associates, PC
  • Phone: 520-884-0176
  • Website:

Specialties & Experience of this Expert Witness

General Specialties:

Financial and Business Damages

Specialty Focus:

Mergers & Acquisitions, Financial, Insolvency, Forensic Accounting, Bankruptcy, Business damages, Data mining, Business Operations, Accounting investigations, Forensic investigations, Litigation support, Litigation services.


Bachelor of Arts, Accounting, Michigan State University; Master of Science, Taxation, Michigan State University

Years in Practice:


Additional Information

Sean is a Certified Public Accountant (CPA) and a Certified Fraud Examiner (CFE) with more than 16 years of public accounting and industry experience. A few of Sean’s notable areas of expertise include mergers and acquisitions (buy and sell), financial analysis and investigative financial review, consolidations and complex financial reporting (business plans, budgeting, and forecasting), transfer pricing, ERP implementation, debt and equity financing arrangements (fundraising, warrants, options, convertible notes, etc.), and issues associated with costing of production efforts and inventory. Sean joined the Audit Department of Plante Moran upon graduation from Michigan State University where he spent 8 years providing audit, tax, due diligence and other consulting services to large manufacturing, distribution, and retail companies throughout the world. Sean subsequently went to work for one of his clients, Dart Container, where he was responsible for the corporate accounting functions of more than 100 legal entities spread across the globe. In his position at Dart Container, Sean was also responsible for the integration of Solo Cup Company’s accounting functions following their acquisition by Dart, and the implementation of SAP across dozens of operating and administrative facilities throughout the world. Sean left Dart Container to relocate to Arizona, where he served as the head of finance for two different tech-based start-up companies before joining Keegan Linscott as Principal within the consulting department. Sean holds Bachelor of Arts and Master of Science degrees in Accounting with a concentration in Taxation from Michigan State University. Sean is a member of the National Association of Certified Fraud Examiners, the AICPA, the ASCPA, and is licensed to practice public accounting in the state of Arizona. Sean has served on a number of not-for-profit boards over the course of his career, including Big Brothers Big Sisters, and he is very active in the Tucson community.