Grant Thornton elects new Partnership Board members


Jim Wittmer to continue to serve as chairman of the board

CHICAGO — Grant Thornton LLP’s partners and principals have elected three new members to the firm’s Partnership Board. They include:

  • Bert Fox, national managing partner of Professional Standards (based in Chicago).
  • Chris Smith, Advisory Services practice leader for Growth and Transformation (based in Bellevue, Washington).
  • Mark Sullivan, Advisory Services practice leader for the Midwest region (based in Chicago).

In addition, the firm’s partners and principals have re-elected Jim Wittmer to the firm’s Partnership Board, which then re-elected him to continue as its chairman. Wittmer also continues to serve as Grant Thornton’s national Tax leader for market growth, and is based in Philadelphia. 

“Grant Thornton is fortunate to have such a talented group of servant leaders who are committed to the growth and strategic direction of the firm,” said Brad Preber, CEO of Grant Thornton. “Our elected and re-elected board members will help ensure that Grant Thornton continues providing clients with innovative audit, tax and advisory services – while also delivering exceptional value and quality.”

Continuing Partnership Board members who are currently serving terms include:

  • Brad Preber, CEO (based in Phoenix, Arizona).
  • Muhammad Bhayat, Northeast regional Audit practice leader (based in Iselin, New Jersey).
  • Lori Davis, Denver office managing partner (based in Denver).
  • Janet Malzone, Midwest regional Audit practice leader (based in Chicago).
  • Enzo Santilli, Advisory chief growth officer and Pittsburgh office managing partner (based in Pittsburgh).
  • Seth Siegel, Audit partner (based in Fort Lauderdale, Florida).
  • Dave Wedding, Southeast regional managing partner (based in Charlotte, North Carolina).

Grant Thornton’s Partnership Board helps determine the firm’s direction — and helps guide the governance of the partnership.



About Grant Thornton

“Grant Thornton” is the brand for two professional-services entities: Grant Thornton LLP, a licensed, certified public accounting (CPA) firm that provides audit and assurance services ― and Grant Thornton Advisors LLC (not a licensed CPA firm), which exclusively provides non-attest offerings, including tax and advisory services. With revenues of $2.4 billion for the fiscal year that ended July 31, 2023, and dozens of offices nationwide, Grant Thornton represents a community of more than 9,000 problem solvers, relationship builders, and industry specialists who know that how we serve matters as much as what we do.


Grant Thornton LLP, Grant Thornton Advisors LLC and their respective subsidiaries operate as an alternative practice structure (APS). The APS conforms with applicable laws, regulations and professional standards, including those from the American Institute of Certified Public Accountants.


Grant Thornton LLP and Grant Thornton Advisors LLC serve as the U.S. member firms of the Grant Thornton International Ltd (GTIL) network. GTIL and its member firms are not a worldwide partnership and all member firms are separate legal entities. Member firms deliver all services; GTIL does not provide services to clients.




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