Brent Eichelberger Joins Commerce Bank of Peoria as Senior Vice President and Commercial Banking Manager

Peoria, IL - June 20, 2003 -Brent Eichelberger recently joined Commerce Bank as a Senior Vice President. As Commercial Banking Manager, Eichelberger is responsible for overseeing commercial banking development in the Peoria region. "We are pleased to have Brent leading our business banking department here in Peoria. He brings a wealth of financial experience to our team and his dedication to sustaining client relationships fits in well with Commerce Bank's philosophy," remarked Joe Henderson, Peoria Community Bank President.

About Commerce Bank
Commerce Bank is the principal subsidiary of Commerce Bancshares Inc. (NASDAQ: CBSH), a $13.4 billion regional bank holding company. For more than 135 years, Commerce has been meeting the financial services needs of individuals and businesses. Commerce provides a diversified line of financial services, including business and personal banking, wealth management and estate planning and investments through its affiliated companies. Commerce Bancshares operates across three states with more than 330 locations and also has operating subsidiaries involved in mortgage banking, credit related insurance, venture capital and real estate activities.

For additional information, please visit www.commercebank.com or email mymoney@commercebank.com

# # #