Mary P. Ricciardello


Retired Senior Vice President and Chief Accounting Officer,
Reliant Energy Inc.

Independent Director since 2020


  • Audit
  • Corporate Governance, Nominating and Sustainability


  • Senior Vice President and Chief Accounting Officer, Reliant Energy Inc. (1999-2002)
  • Vice President and Comptroller, Reliant Energy Inc. (1996-1999)
  • Comptroller (1993-1996)
  • Assistant Treasurer and Assistant Corporate Secretary, Houston Lighting & Power Company (1991-1993)
  • Manager, Financial Services, Houston Lighting & Power Company (1986-1990)

Qualifications and Expertise Provided to Our Board

  • Rigorous accounting, corporate finance, tax and financial experience gained as an executive officer and board member of public and private entities
  • Deep experience and knowledge acquired as an executive officer and board member, including with respect to strategic planning, corporate governance, strategic transactions, executive compensation, and environmental and social matters
  • M&A and business development experience gained through large acquisitions and divestitures, both domestically and internationally

Other Boards

  • ProPetro Holding Corp. (NYSE: PUMP) (2023-present)
  • Devon Energy (NYSE: DVN) (2008-2021)
  • Noble Corporation (NYSE: NE) (2003-2020)
  • EnLink Midstream (NYSE: ENLC) (2014-2018)
  • Midstates Petroleum (NYSE: MPO) (2010-2013)
  • U.S. Concrete (Nasdaq: RMIX) (2003-2010)
  • TriCities Chapter (Houston) of National Association of Corporate Directors, Board Leadership Fellow
  • University of Saint Thomas (2012-2017), Executive Committee Member, Audit and Finance Committee Chairperson
  • Galveston/Houston Catholic Endowment Foundation (2003-2012), Vice President and Assistant Treasurer, Executive Committee, Finance Committee


Education and Certifications

  • B.A., University of South Dakota
  • M.B.A. (Finance), University of Houston
  • Licensed Certified Public Accountant
  • CERT Certificate in Cybersecurity, Carnegie Mellon University (2017)
  • Editorial Advisor, Journal of Accountancy

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