COMMERCE BANK ANNOUNCES RETAIL BANKING STAFF PROMOTIONS

(Moniteau County, MO – February 18, 2009) – Brad Clay, community president, Commerce Bank, Moniteau County, recently announced the following Retail Banking staff promotions:

Bonnie George, assistant vice president, has been promoted to Branch Manager for both the Tipton and California Banking Centers. In her position, she is responsible for business development and customer service related to banking and lending services for consumers and small business in both Moniteau County locations.

George has approximately 25 years of banking experience and has a Bachelor’s of Science degree in Business Management and Human Resources from William Woods University. Active in the community, George is a board member for the California Area Chamber of Commerce, serving as chairman for the Easter Egg Hunt and the Commerce Bank Kid’s corner held at the Ozark Ham and Turkey Festival. She is a volunteer for American Cancer Society Relay for Life and currently serves as President for the Lady Pinto Volleyball Booster Club.

Tammy Knipp has been promoted to financial services manager for the Tipton Banking Center. In her position, she is responsible for managing retail sales and customer service at the Tipton branch. Knipp joined Commerce in 1983 and prior to her promotion was a Senior Financial Services Representative. She has an Associates Degree in Business from State Fair Community College, Sedalia. Active in the community, she is a volunteer for American Cancer Society Relay for Life.

“We are extremely pleased to announce the promotions of Bonnie George and Tammy Knipp,” stated Clay. “Their talent and in-depth experience directly benefits, and adds value to our expanding customer relationships in Moniteau County.”

About Commerce Bank

Commerce Bank, N.A. is a subsidiary of Commerce Bancshares, Inc. (NASDAQ: CBSH), a $17.5 billion regional bank holding company. For more than 140 years, Commerce Bank has been meeting the financial services needs of individuals and businesses throughout the Midwest region. Commerce Bank provides a diversified line of financial services, including business and personal banking, wealth management and estate planning, and investments through its affiliated companies. Commerce Bank operates in approximately 350 locations in the Central United States. Commerce Bancshares also has operating subsidiaries involved in mortgage banking, leasing, credit-related insurance, venture capital and real estate activities.

For additional information contact:

Email: mymoney@commercebank.com†