UMB Financial Corporation

News Release

1010 Grand Boulevard Kansas City, MO 64106 816.860.7000 umb.com

//FOR IMMEDIATE RELEASE//

Contact: Mandie Nelson, 816.860.5088

Investor Relations Contact: Abby Wendel, 816.860.1685

UMB Financial Corporation Reports First Quarter Earnings of $26.2 Million, an Increase of 15.9 Percent

Selected financial highlights:

Kansas City, Mo. (April 27, 2010) – UMB Financial Corporation (NASDAQ: UMBF), a financial services holding company, announced earnings for the three months ended March 31, 2010 of $26.2 million or $0.65 per share ($0.65 diluted). This is an increase of $3.6 million, or 15.9 percent, compared to first quarter 2009 earnings of $22.6 million or $0.56 per share ($0.55 diluted).

Commenting on the company’s first quarter 2010 results, Chairman and Chief Executive Officer Mariner Kemper said, “Our results were driven primarily by the execution on our diversified financial services strategy. Noninterest income for the quarter was solid, reflecting our recent acquisitions and the strong equity markets. However, loan demand remains weak with commercial utilization rates well below historical averages. Although we see signs of an improving economy, continued high unemployment coupled with other uncertainties will likely make a full recovery in the short run more difficult.”

Net Interest Income and Margin

Net interest income for the first quarter of 2010 was flat compared to the same period in 2009. Average earning assets increased by $675.9 million, or 7.1 percent, compared to the first quarter of 2009. This increase was due to a $539.2 million, or 132.1 percent, increase in average interest-bearing due from banks and a $183.3 million, or 4.0 percent, increase in total securities, including trading securities. Net interest margin decreased 20 basis points to 3.19 percent for the three months ended March 31, 2010 compared to the same quarter in 2009.

Noninterest Income and Expense

Noninterest income increased $17.5 million, or 25.4 percent, for the three months ended March 31, 2010 compared to the same period in 2009. Trust and securities processing income increased $10.7 million, or 42.9 percent, for the three months ended March 31, 2010 compared to the same period in 2009. This increase was primarily due to a $6.5 million, or 76.9 percent, increase in fund administration and custody services and a $3.8 million, or 57.0 percent, increase in advisory fee income from the Scout Funds. Gains from the sale of securities available for sale of $5.4 million were recognized during the first quarter of 2010.

Noninterest expense increased $10.7 million, or 10.1 percent, for the three months ended March 31, 2010 compared to the same period in 2009. Salary and benefits expense increased by $4.3 million, or

7.3 percent, mostly due to higher base salary, commission, and health insurance costs. Processing fees increased $4.0 million, or 57.5 percent, due to increased third party custodian fees related to international transactions from mutual fund clients and fees paid by the advisor to third-party distributors of the Scout Funds.

“We are very pleased with the growth in noninterest income during the quarter,” said Peter deSilva, President and Chief Operating Officer. “The recent corporate trust acquisitions, along with more than $573 million of net flows into the Scout Funds and positive equity markets, helped to propel the 25.4 percent noninterest income growth in the quarter. In addition, recent new client wins in the commercial credit card space, along with an increase in commercial credit card purchase volume in excess of 20 percent, position us well for future growth from this key business segment. Expense growth during the quarter was driven by incentive payments based upon improved sales results and increased costs related to the distribution and custody of Scout Fund assets by third parties. We remain focused on expense control even as we grow top line revenue.”

Balance Sheet

Average total assets for the three months ended March 31, 2010 were $11.0 billion compared to $10.2 billion for the same period in 2009, an increase of $765.5 million, or 7.5 percent. Average earning assets increased by $675.9 million for the period, or 7.1 percent.

Actual loan balances on March 31, 2010 of $4.3 billion were flat compared to 2009. Real estate loans increased $214.4 million, or 13.2 percent, due to increases in commercial real estate and home equity loans. Consumer loans decreased $104.5 million, or 20.2 percent, due to the continued reduction in indirect auto loans as the company exits this market. Commercial loans decreased $116.9 million, or 5.7 percent. Average loan balances for the three months ended March 31, 2010 and 2009 were flat at $4.4 billion.

Nonperforming loans increased to $25.4 million at March 31, 2010 from $14.6 million at March 31, 2009. As a percentage of loans, nonperforming loans increased to 0.59 percent as of March 31, 2010 compared to 0.34 percent at March 31, 2009. This increase is predominately due to one syndicated national credit, which was placed on nonaccrual during 2009. Nonperforming loans are defined as nonaccrual loans and restructured loans. By comparison, the industry average for nonperforming loans as of December 31, 2009 was 5.30 percent. The company’s allowance for loan losses totaled $67.4 million, or 1.57 percent of loans as of March 31, 2010 compared to $54.0 million, or 1.25 percent of loans as of March 31, 2009.

For the three months ended March 31, 2010, average securities, including trading securities, totaled $4.8 billion. This is an increase of $183.3 million, or 4.0 percent, from the same period in 2009. Average interest-bearing due from banks increased for the first quarter by $539.2 million, or 132.1 percent, to $947.4 million from the same period in 2009.

Average total deposits increased $967.8 million, or 13.0 percent, to $8.4 billion for the three months ended March 31, 2010 compared to the same period in 2009. The increase in deposits came primarily from mutual funds, treasury management accounts, and time deposit accounts. Average time deposit accounts increased $270.9 million, or 18.6 percent, for the three months ended March 31, 2010 as compared to 2009. Average money market accounts increased by $193.8 million, or 13.2 percent, in 2010 as compared to 2009. Average noninterest-bearing demand deposits increased $498.4 million, or 22.2 percent, compared to 2009. Total deposits as of March 31, 2010 were $8.2 billion, compared to $7.7 billion at March 31, 2009, a 7.1 percent increase.

“Deposit growth has outpaced loan demand, and as a result the investment portfolio has grown and is now our largest earning asset,” said Mike Hagedorn, Chief Financial Officer. “We continue to manage the investment portfolio’s duration and interest rate risk in anticipation of a rising interest rate environment. The overall high quality of the portfolio is further evidence of our balance sheet strength.”

As of March 31, 2010, UMB had total shareholders’ equity of $1.0 billion, an increase of 4.5 percent over March 31, 2009.

The company plans to host a conference call to discuss its first quarter financial results on April 28, 2010, at 8:30 a.m. (CDT). Interested parties may access the call by dialing U.S. (toll-free) 877.941.6009, by following the Web link to the live call: http://w.on24.com/r.htm?e=202344&s=1&k=825BE7A36DE06B1C44891AAA511D2B5D or by visiting umb.com to access the link to the live call.

A replay of the conference call may be heard until May 12, 2010, by calling U.S./Canada (toll-free) 800.406.7325 or 303.590.3030. The replay pass code required for playback is conference 4277502. The call replay may also be accessed via the company's web site, umb.com, by visiting the Investor Relations’ area.

Forward-Looking Statements:

This release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, Section 21E of the Securities Exchange Act of 1934, and within the meaning of the Private Securities Litigation Reform Act of 1995. Such forward-looking statements rely on a number of assumptions concerning future events and are subject to risks and uncertainties, which could cause actual results to differ materially from those contemplated by the forward-looking statements in this Current Report on Form 8-K, any exhibits to this Current Report and other public statements the company may make. While management of UMB believes their assumptions are reasonable, UMB cautions that changes in general economic conditions, changes in interest rates, changes in the securities markets, changes in operations, changes in competition, technology changes, legislative or regulatory changes, the ability of customers to repay loans, changes in loan demand, increases in employee costs, its ability to integrate acquisitions and other risks and uncertainties detailed in UMB’s filings with the Securities and Exchange Commission, may cause actual results to differ materially from those discussed in this release. UMB has no duty to update such statements, and undertakes no obligation to update or supplement forward-looking statements that become untrue because of new information, future events or otherwise.

About UMB:

UMB Financial Corporation (NASDAQ: UMBF) is a financial services holding company headquartered in Kansas City, Mo., offering complete banking, asset management, health spending solutions and related financial services to commercial, institutional and personal customers nationwide. Its banking subsidiaries own and operate 135 banking centers throughout Missouri, Illinois, Colorado, Kansas, Oklahoma, Nebraska and Arizona. Subsidiaries of the holding company and the lead bank, UMB Bank, n.a., include mutual fund and alternative investment services groups, single-purpose companies that deal with brokerage services and insurance, and a registered investment advisor that manages the company's proprietary mutual funds and investment advisory accounts for institutional customers. For more information, visit umb.com or follow us on Twitter at @UMBFinancial.