Our Team


Susannah K. Sowko


  • Commercial Lender Services

Susannah K. Sowko, CPA

Consulting Manager

Susannah is a manager in the firm’s consulting practice and began her career with Sisterson in 2009. She returned to Sisterson in 2019 after spending six years in the field exam department at one of the world’s largest banks. Susannah provides field examination services for lending institutions for a variety of industries including manufacturing, distribution, retail, and service companies. She also assists with the development of continuing professional education classes for the firm’s commercial lender services practice.

Susannah lives with her husband, two sons, and dog in Rostraver Township. She enjoys doing yoga and baking.  


  • B.A. in Accounting, Washington & Jefferson College

Professional Certifications

  • Certified Public Accountant (Pennsylvania)

Professional & Community Involvement

  • American Institute of Certified Public Accountants
  • Pennsylvania Institute of Certified Public Accountants