CHRIS SWEET JOINS COMMERCT TRUST COMPANY AS SENIOR VICE PRESIDENT, MARKET EXECUTIVE

(Springfield, MO. - June 6, 2007) – John Himmel, chairman, Commerce Bank, Springfield Region announced that Chris Sweet has joined The Commerce Trust Company as Senior Vice President, and Market Executive. In his new position, Sweet has overall responsibility for managing The Commerce Trust Company in the Springfield Region. He will focus on all aspects of staff development, new business development and relationship management related to the division’s asset management, traditional trust and financial advisory services, private client group and private banking services for individual and institutional clients.

"Mr. Sweet’s experience will be a valuable asset to our clients by providing them with unique financial solutions to meet their individual needs," Himmel said. "We look forward to his leadership in helping prospective clients find superior tailored financial solutions and objective investment advice through Commerce Trust."

Sweet has more than 18-years experience in the investment management industry. Prior to joining Commerce, Sweet was the Financial Advisor for Raymond James Financial Services, Inc. He began his career in the investment industry as an investment loan administrator and credit analyst before moving into trust. Sweet received his bachelor’s degree from Central Missouri State University and holds NASA Series 7, 66 and 63 securities licenses. Additionally, Sweet is a graduate of the Cannon Financial Institute, University of North Carolina, Charlotte, North Carolina.

About Commerce Bancshares, Inc.

Commerce Bancshares, Inc. (NASDAQ: CBSH), is a $15.2 billion regional bank holding company. For more than 140 years, Commerce has been meeting the financial services needs of individuals and businesses throughout the Midwest region. 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 maintains approximately 360 locations throughout the Midwest, primarily in Missouri, Illinois, Kansas and Oklahoma. Commerce also has operating subsidiaries involved in mortgage banking, leasing, credit-related insurance, venture capital and real estate activities.

The Commerce Trust Company, a division of Commerce Bank, N.A., provides asset management, trust, private banking and other financial advisory services to affluent individuals and their families, as well as to corporations, non-profit institutions and employee benefit plans. Today, Commerce Trust administers more than $21 billion in total assets, with investment responsibility for more than $15 billion.

For additional information contact:

Web Site: www.commercebank.com
Email: mymoney@commercebank.com†