CHAD A. JACKSON JOINS COMMERCE BANK

Manhattan, KS - June 23, 2003 - Commerce Bank, Manhattan announced that Chad A. Jackson has joined the Commercial lending department as a Commercial Loan Representative. He is responsible for business development and customer service. Chad holds a degree in Business Administration from Kansas State University.

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 more information contact:
Rebecca Freetly-Graber
Marketing Officer
816.234.2308

Website: www.commercebank.com
e-mail: mymoney@commercebank.com
SYMBOL: CBSH

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