Teresa Ressel

Teresa Ressel


Teresa M. Ressel is the CFO of Olayan America handling finance, accounting, and performance measurement across multiple financial asset classes for this global private investment house. In addition, Teresa serves on the Board of ON Semiconductor, a NASDAQ public company. Ms. Ressel has significant experience in the financial industry as well as a technical background in engineering. 

Teresa worked across international banking and finance as CEO of UBS Securities LLC (U.S. division of UBS Investment Bank) for 5+ years.  Prior to her CEO tenure, she led UBS’s Americas region as Chief Operating Officer across the United States, Canada, and Latin America.

From 2001-2004, Teresa served at the United States Treasury.   Confirmed by the U.S. Senate as Assistant Secretary for Management and Chief Financial Officer, her duties included financial management, strategy around revenue collection for the IRS and the U.S. Customs Bureau, handling the government’s audit across the Department, reporting and cash flow duties, and an array of regulatory oversight matters for financial markets and financial institutions. For her service representing the Secretary of the Treasury’s interests while multiple Treasury divisions divested into the creation of the Department of Homeland Security, Teresa was awarded the Treasury Medal. Similarly, Teresa was recognized by the IRS with the Commissioner’s Award for her service representing the Secretary of the Treasury’s interests at the IRS Oversight Board, customer interfaces, and her Treasury leadership with IRS colleagues.

Teresa’s spent significant time across Asia Pacific with a major computer manufacturer (1990-1994).  Prior to her public service assignments, she was Chief Compliance Officer for a major hospital chain; in her various positions there, she served as Senior Vice President and Chief Operating Officer, e-Commerce. Following her role at the U.S. Treasury, Ms. Ressel was hired by the Chairman of AES to remediate their technology and strategy portfolio and installed a formal Environmental and Health Safety audit program.  

Teresa has been a frequent public speaker on financial literacy, using financial information to bolster the quality of decision-making. She has written a number of technical publications within the field of engineering and has been recognized for her auditing expertise by Directors & Boards Magazine (2014).  Ms. Ressel holds an MBA from Rensselaer Polytechnic Institute andBS and MS degrees in Engineering from the University of Delaware.