William Rainer was appointed to the Santander Holdings, USA Inc. Board of Directors in August 2022. Mr. Rainer was appointed to the Santander Consumer USA Holdings, Inc. Board of Directors in July 2015 and served as Chairman of the Board and Executive Committee from July 2016 until August 2022. He has had numerous leadership roles in the finance and banking industry. From 2001 to 2004, Mr. Rainer served as the Chair and Chief Executive Officer of OneChicago, LLC, a regulated futures exchange. He has also served as the Chair of the Commodity Futures Trading Commission from 1999 to 2001, as the Chair of the United States Enrichment Corporation from 1994 to 1998, and as Founder of Greenwich Capital Markets, Inc. from 1981 to 1988. Previously, Mr. Rainer held various leadership positions at Kidder, Peabody & Co., Inc. Mr. Rainer served as director of IQ Funds, a family of closed-end mutual funds, from 2004 until 2010. From 1996 to 2000 and from 2004 to 2008, Mr. Rainer served as a Trustee for Southern Methodist University. He has served as a member of the Dean’s Council of the Harvard Divinity School since 2003 and as its Chair from 2005 through June 2013. He received his bachelor’s degree and his Master of Business Administration degree from Southern Methodist University.