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     UMB Financial Corporation Reports Third Quarter 2012 Earnings; Posts Tenth Consecutive Quarter of Loan Growth; Announces 4.9 Percent Dividend Increase

Kansas City, Mo. (October 23, 2012) – UMB Financial Corporation (NASDAQ: UMBF), a diversified financial holding company, announced earnings for the three months ended September 30, 2012 of $26.1 million or $0.65 per share ($0.64 diluted). This is an increase of $0.1 million, or 0.4 percent, compared to third quarter 2011 earnings of $26.0 million or $0.65 per share ($0.64 diluted). Earnings for the nine months ended September 30, 2012 were $101.7 million or $2.54 per share ($2.51 diluted). This is an increase of $18.5 million, or 22.2 percent, compared to the prior year-to-date earnings of $83.2 million or $2.08 per share ($2.06 diluted).

“UMB’s unique position as a diversified financial services company allowed us to post solid results for the quarter,” said Mariner Kemper, Chairman and Chief Executive Officer. “Investments in our fee businesses continue to pay off, demonstrated by the 5.3 percent increase in noninterest income compared to the third quarter of 2011. We are pleased to report yet another quarter of double-digit loan growth, with average balances increasing 10.5 percent over the third quarter of 2011. This marks our tenth consecutive quarter growing loans. Compared to the industry, the more than 1,400 regulated depositories that had announced third quarter results as of October 22 reported a median increase in loan balances of just 0.65 percent. In addition, UMB is an industry leader in credit quality, with net charge-offs of just 0.44 percent in the third quarter.”

Net Interest Income and Margin

Net interest income for the third quarter of 2012 increased $1.3 million, or 1.6 percent, compared to the same period in 2011. Average earning assets increased by $987.9 million, or 8.9 percent, compared to the third quarter of 2011. This increase was due to an $831.4 million, or 14.5 percent, increase in average total securities, including trading securities and a $502.9 million, or 10.5 percent, increase in average loans offset by a $335.8 million decrease in average interest bearing due from banks. Net interest margin decreased 18 basis points to 2.80 percent for the three months ended September 30, 2012 compared to the same quarter in 2011.

Noninterest Income and Expense

Noninterest income increased $5.4 million, or 5.3 percent, for the three months ended September 30, 2012 compared to the same period in 2011. This increase is primarily attributed to an increase in trust and securities processing income of $4.4 million, or 8.4 percent, for the three months ended September 30, 2012 compared to the same period in 2011. The increase in trust and securities processing income was primarily due to a $2.7 million, or 16.8 percent, in advisory fee income from the Scout Funds and a $1.3 million, or 7.8 percent, increase in fund administration and custody services.

Noninterest expense increased $6.5 million, or 4.6 percent, for the three months ended September 30, 2012 compared to the same period in 2011. This increase is driven by higher salary and benefits expense in 2012 of $3.9 million, or 5.2 percent, and increases in marketing and business development of $2.5 million, or 50.0 percent. The higher salaries and benefits expense is due to increases in salaries and wages of $3.0 million, or 6.4 percent, and a $1.9 million, or 17.4 percent, increase in employee benefits expense. The increased marketing and business development is due to timing differences of advertising initiatives in 2012 compared to 2011 as well as increased business development expenses in 2012.

“We continue to see momentum in our diversified fee businesses and are pleased with the 57 percent contribution to revenue they provided in the third quarter,” said Peter deSilva, President and Chief Operating Officer. “Our Payment Solutions segment posted another quarter of record purchase volume as spending in all of our card products increased by 38.6 percent versus the third quarter of 2011. Spending on healthcare cards grew 13.8 percent, and this business continues to be a key contributor to our fee income. Institutional Investment Management, which is our Scout Investments business, continues to execute on its distribution strategy, growing assets under management to $22.6 billion, an increase of 18.6 percent from a year ago. Our wealth management platform for individuals ended the quarter with assets under management of $8.7 billion, which when combined with Scout, brought total company assets under management to $31.3 billion at the end of the quarter, an increase of 19.3 percent compared to the third quarter of 2011.”

Balance Sheet

Average total assets for the three months ended September 30, 2012 were $13.2 billion compared to $12.2 billion for the same period in 2011, an increase of $1.0 billion, or 8.3 percent. Average earning assets increased by $987.9 million for the period, or 8.9 percent.

Average loan balances for the three months ended September 30, 2012 increased $502.9 million, or 10.5 percent, to $5.3 billion compared to the same period in 2011. Actual loan balances on September 30, 2012 were $5.4 billion, an increase of $613.7 million, or 12.8 percent, compared to September 30, 2011. This increase was primarily driven by an increase in commercial loans of $592.5 million, or 28.2 percent.

Nonperforming loans increased to $27.4 million on September 30, 2012 from $20.1 million on September 30, 2011. As a percentage of loans, nonperforming loans increased to 0.51 percent as

of September 30, 2012 compared to 0.42 percent on September 30, 2011. Nonperforming loans are defined as nonaccrual loans and restructured loans. The company’s allowance for loan losses totaled $71.4 million, or 1.32 percent of loans, as of September 30, 2012 compared to $72.9 million, or 1.53 percent of loans, as of September 30, 2011.

For the three months ended September 30, 2012, average securities, including trading securities, totaled $6.6 billion. This is an increase of $831.4 million, or 14.5 percent, from the same period in 2011.

Average total deposits increased $917.9 million, or 9.7 percent, to $10.4 billion for the three months ended September 30, 2012 compared to the same period in 2011. Average noninterest-bearing demand deposits increased $690.9 million, or 19.7 percent, compared to 2011. Average interest-bearing deposits increased by $227.0 million, or 3.8 percent, in 2012 as compared to 2011. Total deposits as of September 30, 2012 were $10.6 billion, compared to $9.4 billion as of September 30, 2011, a 13.0 percent increase. Also, as of September 30, 2012, noninterest-bearing demand deposits were 41.6 percent of total deposits.

“This quarter marks the sixth increase in the company’s dividend since the beginning of the economic crisis of 2008,” said Mike Hagedorn, Chief Financial Officer. “Our dividend has increased by more than 43 percent during that time. Comparatively, the industry has reported a 50 percent median decrease in declared dividends over the same period. We have also continued to organically grow shareholders’ equity, which has increased by 45.3 percent since the beginning of 2008—without government assistance.”

As of September 30, 2012, UMB had total shareholders’ equity of $1.3 billion, an increase of 10.6 percent as compared to the same period in 2011.

Dividend Declaration

The Board of Directors declared during the company’s quarterly board meeting a $0.215 quarterly cash dividend, payable on December 28, 2012, to shareholders of record at the close of business on December 10, 2012.

Year-to-Date

Earnings for the nine months ended September 30, 2012 were $101.7 million or $2.54 per share ($2.51 diluted). This is an increase of $18.5 million, or 22.2 percent, compared to the prior year-to-date earnings of $83.2 million or $2.08 per share ($2.06 diluted).

Net interest income for the nine months ended September 30, 2012 increased $2.4 million, or 1.0 percent, compared to the same period in 2011. Net interest margin decreased to 2.79 percent for the nine months ended September 30, 2012 as compared to 2.95 percent for the same period in 2011.

Noninterest income increased $32.3 million, or 10.2 percent, to $348.8 million for the nine months ended September 30, 2012 as compared to the same period in 2011. Trust and securities processing income increased $9.5 million, or 6.0 percent, for year-to-date September 30, 2012 as compared to the same period in 2011. Gains from the sale of securities available for sale of $20.0 million were recognized during the first nine months of 2012 compared to $15.9 million for the first nine months of 2011. Other noninterest income increased $13.2 million, or 139.6 percent, primarily driven by an $8.7 million adjustment in contingent consideration liabilities on acquisitions.

Noninterest expense increased $12.0 million, or 2.8 percent, for the nine months ended September 30, 2012 compared to the same period in 2011. Salary and employee benefit expense

increased by $16.0 million, or 7.2 percent, offset by a $7.8 million escrow fund established during the second quarter of 2011 to settle a class action lawsuit.

Conference Call

The company plans to host a conference call to discuss its 2012 third quarter earnings results on October 24, 2012, at 8:30 a.m. (CDT).

Interested parties may access the call by dialing (toll-free) 877-941-0844 or (U.S.) 480-629-9835. The live call can also be accessed by visiting the investor relations area of umb.com or by using the following the link:

http://event.on24.com/r.htm?e=524870&s=1&k=B9EE876276A519260D14226523D52957

A replay of the conference call may be heard until November 7, 2012 by calling (toll-free) 800-406-7325 or (U.S.) 303-590-3030. The replay pass code required for playback is conference identification number 4568203. The call replay may also be accessed via the company's website, 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, payment solutions, asset servicing and institutional investment management to customers. Its banking subsidiaries own and operate banking and wealth management 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 @UMBBank.