8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): August 30, 2013

Commerce Bancshares, Inc.

(Exact name of registrant as specified in its charter)

Missouri0-298943‑0889454

(State of Incorporation)(Commission File Number)(IRS Employer Identification No.)

1000 Walnut,

Kansas City, MO64106

(Address of principal executive offices)(Zip Code)

(816) 234-2000

(Registrant's telephone number, including area code)

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01 Other Events

Commerce Bancshares, Inc. (“Commerce”) and Summit Bancshares Inc. (“Summit”) completed the acquisition of Summit through a merger of Summit into a wholly-owned subsidiary of Commerce. Immediately after the consummation of that merger, Summit Bank, a wholly-owned subsidiary of Summit, was merged with and into Commerce Bank, a wholly-owned subsidiary of CBI-Kansas, Inc. The transaction, valued at approximately $44 million in Commerce stock, became effective on September 1, 2013. Commerce's acquisition of Summit adds approximately $206million in loans and $230 million in total deposits.

On August 30, 2013, Commerce and Summit issued a joint press release announcing approval of the merger by the shareholders of Summit. A copy of the press release is attached hereto as Exhibit 99.1.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits

99.1 Joint Press Release dated August 30, 2013.

.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

COMMERCE BANCSHARES, INC.

By: /s/ Jeffery D. Aberdeen

                  Jeffery D. Aberdeen

                  Controller

                  (Chief Accounting Officer)

Date: September 3, 2013

EX-99.1

Exhibit 99.1

FOR IMMEDIATE RELEASE

FOR MORE INFORMATION, CONTACT:

Molly Hyland, 314-746-3657 or

Molly.Hyland@commercebank.com

or Terri Hurd, 816-234-2632 or

Terri.Hurd@commercebank.com

Commerce Bancshares, Inc. announces completion of its

merger with Summit Bancshares Inc.

Kansas City, MO and Tulsa, OK, August 30, 2013 – Commerce Bancshares, Inc.

(NASDAQ:CBSH) announced today that the shareholders of Summit Bancshares Inc.,

parent company of Summit Bank, have approved the merger of Summit Bancshares Inc.

(Summit) into a wholly owned subsidiary of Commerce Bancshares, Inc., effective

September 1. Summit has total loans of $206 million and total deposits of $230 million

and the transaction will be valued at approximately $44 million in Commerce Bancshares

stock. With the merger of Summit Bank into Commerce Bank, combined, Commerce

Bank will have approximately $454 million in loans, $363 million in total deposits, and

more than 1,300 business banking relationships in the state of Oklahoma.

Commerce Bancshares, Inc. is a $21.9 billion bank holding company headquartered in

Missouri. Commerce Bank, the principal subsidiary of Commerce Bancshares, Inc., has

approximately 360 locations in the Midwest, primarily in Missouri, Illinois, and Kansas,

but also in Colorado and Oklahoma.

“Now that the merger is complete, we are looking forward to welcoming Summit Bank

customers to Commerce Bank,” said John W. Kemper, president and COO of Commerce

Bancshares, Inc. “The merger will allow us to provide additional lending capacity, and

products and services, including treasury services, leasing, international and money

management to a new customer base in Oklahoma City and Tulsa."

“We are eager to join Commerce. The former Summit Bank management team and

Commerce both understand the importance of community and relationships,” said Wade

Edmundson, CEO of Summit Bank who will become CEO of Commerce Bank’s

Oklahoma market. “This partnership will benefit the business communities in Tulsa,

Oklahoma City and throughout the state.”

“The talented staffs of Commerce and Summit have been working together for several

months to prepare to make this transition as seamless as possible for our customers,” said

Carl Hudgins, chairman, Commerce Bank’s Oklahoma market. “We are also pleased that

our respective boards are excited about the transaction and we look forward to their

continued involvement.”

Commerce will communicate any changes regarding the transition to all former Summit

Bank customers over the next several weeks. Commerce and Summit Bancshares Inc.

announced their intention to merge in May 2013.

About Commerce Bank

Commerce Bank, is a subsidiary of Commerce Bancshares, Inc. (NASDAQ: CBSH), a $21.9

billion regional bank holding company, as of June 30, 2013. 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.

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