DAVID SWINEHART NAMED BRANCH MANAGER, COMMERCE BANK

KANSAS CITY, MO - October 10, 2003 - David Swinehart has been promoted to Retail Banking Officer and Branch Manager of the newest Commerce Banking Center located at 83rd and Mission in Corinth Square. His responsibilities include new business development and general management of the branch and its staff. Swinehart has more than six years of banking experience, including four years with Commerce Bank, where he has most recently served as branch manger at the Martin City Banking Center. Swinehart is a member of the Martin City Business and Community Association.

About Commerce Bank
Commerce Bank is the principal subsidiary of Commerce Bancshares, Inc. (NASDAQ: CBSH), a $13.6 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 operates across three states with approximately 330 locations and also has operating subsidiaries involved in mortgage banking, credit related insurance, venture capital and real estate activities.

For more information contact:
Jill Swords
Regional Marketing Rep
816-234-2308

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

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