Randall Theisen

Randall S. Theisen

General Counsel


Randall S. Theisen has served as General Counsel of Western Alliance Bancorporation since February 2006. Prior to joining Western Alliance, Mr. Theisen spent more than 20 years in private practice representing financial institutions in banking, corporate and financial services law, including serving as head of the Financial Institutions Practice Group of a major Phoenix-based law firm.

He was named a "Leading Lawyer 2006" and "Best of the Bar 2005" for banking attorneys by The Business Journal of Phoenix, and as the “Arizona Public Company Counsel of the Year” in 2014 by the Association of Corporate Counsel. Mr. Theisen earned a B.A. from the University of Wisconsin-Madison and his J.D. with honors from the Sandra Day O’Connor School of Law at Arizona State University, where he served on law review among numerous other academic distinctions. 

About Us

With more than $25 billion in assets, Western Alliance Bancorporation (NYSE:WAL) is one of the country’s top-performing banking companies. The company has ranked in the top 10 on the Forbes “Best Banks in America” list for five consecutive years, 2016-2020, and was named #1 best-performing of the 50 largest public U.S. banks for 2019 by S&P Global Market Intelligence. Its primary subsidiary, Western Alliance Bank, Member FDIC, helps business clients realize their ambitions with local teams of experienced bankers who deliver superior service and a full spectrum of customized loan, deposit and treasury management capabilities. Business clients also benefit from a powerful array of specialized financial services that provide strong expertise and tailored solutions for a wide variety of industries and sectors. A national presence with a regional footprint, Western Alliance Bank operates individually branded, full-service banking divisions and has offices in key markets nationwide.