Our Team


Sara M. Slack


  • Tax Services

Industries & Specialties

  • Individuals & Trusts
  • Private Investment Companies

Sara M. Slack

Tax Director

Sara joined Sisterson in 2015 and is a director in the Firm’s tax practice. She has more than ten years of experience in public accounting, beginning her career with one of the Big Four firms in 2010. Her experience includes tax return preparation and review for individuals, trusts, partnerships and S corporations. Sara works with clients in a variety of industries including service, investment companies and family offices, with an emphasis on high net worth individuals and trusts. She has extensive knowledge of ASC 740 guidelines and multistate taxation.  

Sara lives in the South Hills of Pittsburgh with her husband, Ryan, and their Goldendoodle, Dale.


  • B.S. in Business Administration - Accounting, 

  • California University of Pennsylvania

Professional Affiliations

  • Pennsylvania Institute of Certified Public Accountants