Annette Kosmowski




New Castle


Regional Chief Operating Officer


Internal Client Services


Administration Industry

Education & Certification:

  • Annette graduated magna cum laude from Westminster College in May 1995 with a Bachelor of Arts degree in Accounting.


  • Annette serves as the Regional Chief Operating Officer (Pennsylvania) and Director of Special Projects for Arnett Carbis Toothman LLP, Certified Public Accountants and Advisors. Her responsibilities under these positions include overseeing the general administrative operations of the Firm on a day‐to‐day basis, as well working closely with the Firm’s management to ensure proper implementation of its financial and operational functions. Prior to these positions, she served as a Senior Manager in the Firm’s tax department and has over twenty years of varied tax, auditing, and administrative experience.

Membership & Service:

  • Annette is a member of the American Institute of Certified Public Accountants and the Pennsylvania Institute of Certified Public Accountants. She is a past adjunct professor at Westminster College where she taught various accounting courses.