Commerce Bancshares, Inc. Announces Terry Bassham Elected to Board of Directors

  Commerce Bancshares, Inc. Announces Terry Bassham Elected to Board of
  Directors

Business Wire

ST. LOUIS -- February 8, 2013

David W. Kemper, chairman of the Board of Directors of Commerce Bancshares,
Inc. (CBSH), announced today the election of Terry Bassham to the Board of
Directors. Mr. Bassham is president and chief executive officer of Great
Plains Energy and KCP&L. “We are very pleased to announce the appointment of
Terry Bassham to the Commerce Bancshares, Inc. Board of Directors,” commented
David W. Kemper. “Terry is a seasoned businessman and leader in one of our
economy’s key sectors and will provide our board with valuable insight.”

Mr. Bassham has been instrumental in leading KCP&L’s comprehensive energy
plan, an ambitious initiative that included building 100 megawatts of wind
power, installing environmental retrofits at several generating facilities and
constructing Iatan 2, an 850-megawatt coal-fired power plant. The Board of
Directors increased the number of directors from 11 to 12 to accommodate Mr.
Bassham’s addition to the Board.

About Commerce Bank

Commerce Bank, is a subsidiary of Commerce Bancshares, Inc. (NASDAQ: CBSH), a
$22.2 billion regional bank holding company. For more than 145 years, Commerce
Bank has been meeting the financial services needs of individuals and
businesses. Commerce Bank provides a diversified line of financial services,
including business and personal banking, wealth management, financial
planning, and investments through its affiliated companies. Commerce Bank
operates in more than 360 retail locations in the Central United States and
has a nationwide presence in the commercial payments industry. Commerce
Bancshares also has operating subsidiaries involved in mortgage banking,
leasing, credit-related insurance, private equity and real estate activities.

For additional information, please visit www.commercebank.com.

Contact:

Commerce Bancshares, Inc.
Molly Hyland, 314-746-3657,
Molly.hyland@commercebank.com; or
or
Maura Schnoebelen, 314-746-8567,
Maura.schnoebelen@commercebank.com