Our Team


Robert P. Overbaugh


  • Advisory Services

Robert P. Overbaugh, CPA

Non-Equity Partner

Bob has become a non-equity partner of Sisterson as he transitions towards full retirement from the firm. He is working towards completing various business advisory, valuation and litigations services engagements which are in process, but has stopped taking on new assignments during this transition period. 

Bob joined Sisterson in 1989 after working for a national firm for more than a decade. He was an equity partner of Sisterson through the end of 2020. "We measure success by how satisfied our clients are," he says. "We know that we deliver a technically superior product in a personal manner for a reasonable price. Still, client validation is the best indicator."

Bob and his wife have four children and live in Franklin Park, PA


  • B.S. in Accounting, The Pennsylvania State University

Professional Certifications

  • Certified Public Accountant (Pennsylvania)
  • Formerly a Certified Valuation Analyst

Professional & Community Involvement

Bob was a long-time member of the following organizations but has discontinued these memberships as he transitions towards retirement. 
  • American Institute of Certified Public Accountants
  • Pennsylvania Institute of Certified Public Accountants
  • Forensic and Valuation Services Section of the AICPA
  • National Association of Certified Valuators and Analysts

Contact Bob