The business of Kiernan Trebach is directed by a five-person Executive Committee. Currently serving on the Executive Committee are Alan Block, Heather Deane, Michael Smith, Mark Lockett, and John Kiernan. Heather Deane is the Firm’s Managing Partner and is responsible for overall leadership, strategy and policy in coordination with the Executive Committee. In addition, Kevin McCarthy, CPA, CLM, the firm’s Chief Financial & Administrative Officer, manages the day-to-day administrative and finance operations of the firm. Michael Chefitz serves as the firm’s General Counsel.
General Counsel
Professional Staff

Outside of work, you will find Helen with family and friends, at the beach and watching sports.


Outside of work, Dennis enjoys spending time with family and friends, spending time on the family farm and attending small college football games in the fall.

Prior to joining Kiernan Trebach, Casey held finance leadership roles at Supernus Pharmaceuticals, where he streamlined key accounting processes and improved the efficiency of monthly reporting cycles. Earlier in his career, Casey worked in KPMG’s Deal Advisory & Strategy practice, conducting financial and operational due diligence for clients across various industries. His experience includes budgeting and forecasting, cost accounting, and financial analysis and modeling.
Casey is a Certified Public Accountant and holds dual Bachelor of Science degrees in Accounting and Finance from the University of Maryland’s Robert H. Smith School of Business. Outside of work, he is an Eagle Scout and enjoys playing pickleball, tennis, and golf.

A graduate of Randolph College, Brooke combines her extensive professional experience with a collaborative approach to support attorneys in building and maintaining strong client relationships. Outside of work, she enjoys spending time with her three daughters, her husband, and their dog, Wilson.

Sandra Zavala has been with the firm’s Washington, D.C. office for 11 years. Sandra is the Collections Specialist, she mainly focuses on the accounts receivables for all the firm offices and assists with billing.
Outside of work and school, Sandra enjoys spending time with family and friends.

Outside of work and school, Carmen enjoys spending time with family and friends, travelling and reading science fiction.

