H.S. Grace & Company, Inc.
S. Lawrence Prendergast, MBA

Professional Positions

  • Executive Vice President of Finance at LaBranche & Co. Inc.
  • Chairman and CEO at AT&T Investment Management Corp.
  • Vice President and Treasurer at AT&T

Larry Prendergast was the Vice President and Treasurer of AT&T from 1983-1997. In 1997 he was elected Chairman and CEO of AT&T Investment Management Corp. which was responsible for the investment and the administration of $35 billion in funded employee plan assets for AT&T Corp. He retired from AT&T in 1999. He then became Executive Vice President of Finance at LaBranche & Co. Inc., a New York Stock Exchange specialist firm.

Before joining HSG, Larry served as an expert witness for the IRS in the late 60s and later gave numerous depositions in his role as Treasurer of AT&T. He was also deposed in a trial while a director of an Ohio company. At HSG, Larry has provided expert services analyzing allegations in disputes involving officer and director responsibilities, corporate restructurings, mergers and acquisitions, financings and bankruptcies, and numerous other subject areas. He also has served as a speaker in HSG’s business and professional programs for law and insurance clients.



M.B.A. from New York University

B.A. in Mathematics from Brown University


Professional and Community Affiliations

Financial Executives International (FEI) -  Served as Chairman of the Financial Executives Research Foundation.

Chairman of the Turrell Fund

Serves on the advisory board of several investment funds, including JPMorgan

Past Board Member at Cincinnati Incorporated

Past Board Member at After Market Technologies Corp. 

Past Board Member of three NYSE listed companies: AT&T Capital Corp., LaBranche & Co., and Lucent Technologies, Inc.

Author of the book, “Uncommon Profits Through Stock Purchase Warrants,” published by Dow-Jones Irwin.


Publications Authored with Grace & Co.

"Board Oversight and Governance: From Tone at the Top to Substantive Checks and Balances," Business Law Today, February 2019.

"Corporate Governance and Information Gaps: Importance of Internal Reporting for Board Oversight," Business Law Today, January 2018.

      Larry Prendergast headshot