UMB Financial to acquire El Dorado Savings Bank

Completion depends on required regulatory, stockholder or other approvals and satisfaction of other closing conditions.

Rhea-AI Filing Summary

UMB Financial Corporation announced an agreement to acquire El Dorado Savings Bank, F.S.B., headquartered in Placerville, California. UMB described the proposed acquisition as a way to obtain core, granular, low-cost consumer deposits with an “incredibly low loan-to-deposit ratio,” which it said would enhance liquidity and support continued loan growth. UMB also said the transaction would broaden its retail branch footprint in California and Nevada.

UMB intends to file a Form S-4 registration statement. El Dorado shareholders will receive a prospectus and information statement/proxy materials in connection with the proposed transaction.

Filing Explained

The filing flags potential dilution: if UMB issues additional shares for the transaction, existing holders’ percentage ownership would fall, but the filing does not quantify the issuance or dilution.

Key Terms

loan-to-deposit ratio, registration statement on Form S-4, information statement / proxy, forward-looking statements

4 terms

loan-to-deposit ratio financial

"with an incredibly low loan-to-deposit ratio"

Loan-to-deposit ratio measures how much a bank has lent out compared with the money customers have deposited, expressed as a percentage. Think of it like the share of a household’s savings that has been loaned to others: a higher ratio can boost earnings but reduce cash on hand and increase risk, while a lower ratio means more liquidity but potentially lower returns—key for investors assessing a bank’s balance of profit and safety.

registration statement on Form S-4 regulatory

"intends to file a registration statement on Form S-4"

A registration statement on Form S-4 is a formal filing with the U.S. Securities and Exchange Commission used when a company issues shares or other securities as part of a merger, acquisition, exchange offer or similar corporate deal. It bundles the transaction terms, financial statements, risk factors and shareholder vote materials so investors can assess the deal; think of it as a detailed prospectus or buyer’s packet that explains what you would own and how the deal could change your stake.

information statement / proxy regulatory

"an information statement / proxy and other relevant materials"

A proxy or information statement is the packet sent to shareholders before a corporate vote that explains what will be decided, why it matters, and how to cast a ballot. Think of it as a meeting agenda plus a voting form and background notes: it lays out proposals, board recommendations, executive pay, and key risks so investors can make an informed choice. Investors watch these documents because the outcomes can affect control, strategy, and company value.

forward-looking statements regulatory

"This communication may contain “forward-looking statements”"

Forward-looking statements are predictions or plans that companies share about what they expect to happen in the future, like estimating sales or profits. They matter because they help investors understand a company's outlook, but since they are based on guesses and assumptions, they can sometimes be wrong.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Which bank has UMBF agreed to acquire?

UMB Financial Corporation agreed to acquire El Dorado Savings Bank, F.S.B., headquartered in Placerville, California.

What approvals are needed for UMBF's proposed El Dorado acquisition?

The transaction's completion depends on required regulatory, stockholder or other approvals and satisfaction of other conditions to closing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/27/2026 - 05:25 PM EDT Accepted by SEC EDGAR 10/27/2026 - 04:53 PM EDT Learn about SEC filing dates

Filed by UMB Financial Corporation

Pursuant to Rule 425 under the Securities Act of 1933, as amended

Subject Company: UMB Financial Corporation

Commission File No. 001-38481

The following email to regional advisory boards was made available by UMB Financial Corporation on October 27, 2026.

Hi All,

I’m pleased to share that we have announced an agreement to acquire El Dorado Savings Bank, F.S.B. (El Dorado), headquartered in Placerville, California.

El Dorado is an outstanding bank that addresses two important, strategic areas for us. First, it enables us to obtain core, granular, low-cost, consumer deposits with an incredibly low loan-to-deposit ratio, enhancing our liquidity to continue funding our peer-leading loan growth. It also provides positive momentum to our West Coast retail presence, significantly broadening our branch footprint in California and into Nevada.

I’ve included an overview graphic below that provides high-level details on the company, including their financials and branch geography, along with a link to our investor deck.

This acquisition complements our company’s strong organic growth, and we look forward to continuing to deliver excellence for our clients and UMB.

Please let me know if you have any questions.

Thanks,

Cautionary Note Regarding Forward Looking Statements

This communication may contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Rule 175 promulgated thereunder, and Section 21E of the Securities Exchange Act of 1934, as amended, and Rule 3b-6 promulgated thereunder, which statements involve inherent risks and uncertainties. Any statements about UMB Financial Corporation’s (“UMB”), El Dorado Savings Bank, F.S.B. (“El Dorado”) or the combined company’s plans, objectives, expectations, strategies, beliefs, or future performance or events constitute forward-looking statements. Such statements are generally identified as those that include words or phrases such as “believes,” “expects,” “anticipates,” “plans,” “trend,” “objective,” “continue,” or similar expressions or future or conditional verbs such as “will,” “would,” “should,” “could,” “might,” “may,” or similar expressions. Forward-looking statements involve known and unknown risks, uncertainties, assumptions, estimates, and other important factors that change over time and could cause actual results to differ materially from any results, performance, or events expressed or implied by such forward-looking statements. Such forward-looking statements include but are not limited to statements about the benefits of the business combination transaction involving UMB and El Dorado (the “Transaction”), including future financial and operating results, the combined company’s plans, objectives, expectations and intentions, and other statements that are not historical facts.

These forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those projected. In addition to factors previously disclosed in UMB’s reports filed with the U.S. Securities and Exchange Commission (the “SEC”), the following factors, among others, could cause actual results to differ materially from forward-looking statements or historical performance: the occurrence of any event, change, or other circumstance that could give rise to a right to terminate the definitive merger agreement relating to the Transaction; the outcome of any legal proceedings that may be instituted against UMB or El Dorado; the possibility that the Transaction does not close when expected or at all because required regulatory, stockholder, or other approvals and other conditions to closing are not received or satisfied on a timely basis or at all (and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits of the Transaction); the risk that the benefits from the Transaction may not be fully realized or may take longer to realize than expected, including as a result of changes in, or problems arising from, general economic and market conditions, interest and exchange rates, monetary policy, laws and regulations and their enforcement, and the degree of competition in the geographic and business areas in which UMB and El Dorado operate; instability in global economic conditions and geopolitical matters and impacts related to or resulting from instability in the Middle East and Russia’s military action in Ukraine; changes in U.S. trade policies, including the imposition of tariffs and retaliatory tariffs; the impact of pandemics and other catastrophic events or disasters on the global economy and financial market conditions and UMB’s business, results of operations, and financial condition; the impacts related to or resulting from bank failures and other volatility, including potential increased regulatory requirements and costs, such as Federal Deposit Insurance Corporation (the “FDIC”) special assessments, long-term debt requirements and heightened capital requirements, and potential impacts to macroeconomic conditions, which could affect the ability of depository institutions, including UMB’s bank subsidiary, to attract and retain depositors and to borrow or raise capital; unexpected outflows of uninsured deposits which may require UMB to sell investment securities at a loss; changing interest rates which could negatively impact the value of UMB’s portfolio of investment securities; the loss of value of UMB’s investment portfolio which could negatively impact market perceptions of UMB and could lead to deposit withdrawals; the effects of social media on market perceptions of UMB and banks generally; cybersecurity risks; uncertainty in U.S. fiscal and monetary policy, including the interest rate policies of the Board of Governors of the Federal Reserve System (the “Federal Reserve”); volatility and disruptions in global capital, foreign

exchange and credit markets; movements in interest rates; changes in policies and standards for regulatory review of bank mergers; the nature, extent, timing, and results of governmental actions, examinations, reviews, reforms, regulations, and interpretations, including those related to the Dodd-Frank Wall Street Reform and Consumer Protection Act and the Basel III regulatory capital reforms, as well as those involving the SEC, the Office of the Comptroller of the Currency, the Federal Reserve, the FDIC, the Consumer Financial Protection Bureau and state-level regulators; the ability to promptly and effectively integrate the businesses of UMB and El Dorado; the possibility that the Transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events; reputational risk and potential adverse reactions of UMB’s or El Dorado’s customers, employees or other business partners, including those resulting from the announcement or completion of the Transaction; the dilution caused by UMB’s issuance of additional shares of its capital stock in connection with the Transaction; and the diversion of management’s attention and time from ongoing business operations and opportunities to merger-related matters.

These factors are not necessarily all of the factors that could cause UMB’s, El Dorado’s or the combined company’s actual results, performance, or achievements to differ materially from those expressed in or implied by any of the forward-looking statements. Other factors, including unknown or unpredictable factors, also could harm UMB’s, El Dorado’s or the combined company’s results.

All forward-looking statements attributable to UMB or persons acting on UMB’s behalf, are expressly qualified in their entirety by the cautionary statements set forth above. Forward-looking statements speak only as of the date they are made, and UMB does not undertake or assume any obligation to update publicly any of these statements to reflect actual results, new information or future events, changes in assumptions, or changes in other factors affecting forward-looking statements, except to the extent required by applicable law. If UMB updates one or more forward-looking statements, no inference should be drawn that UMB will make additional updates with respect to those or other forward-looking statements. Further information regarding UMB and factors which could affect the forward-looking statements contained herein can be found in UMB’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025 (available at https://www.sec.gov/Archives/edgar/data/101382/000119312526076496/umbf-20251231.htm), and its other filings with the SEC.

Additional Information About the Transaction and Where to Find It

In connection with the transaction, UMB intends to file a registration statement on Form S-4 with the SEC. The registration statement will include a prospectus of UMB. The definitive prospectus will be sent to the shareholders of El Dorado. In addition, shareholders of El Dorado will receive an information statement / proxy and other relevant materials in connection with the proposed transaction in accordance with applicable law. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE REGISTRATION STATEMENT ON FORM S-4 AND PROSPECTUS INCLUDED WITHIN THE REGISTRATION STATEMENT ON FORM S-4 WHEN THEY BECOME AVAILABLE, AS WELL AS ANY OTHER RELEVANT DOCUMENTS FILED WITH THE SEC IN CONNECTION WITH THE TRANSACTION OR INCORPORATED BY REFERENCE INTO THE REGISTRATION STATEMENT ON FORM S-4, AS WELL AS ANY OTHER DOCUMENTATION RECEIVED IN CONNECTION WITH THE TRANSACTION, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION REGARDING UMB, EL DORADO, THE TRANSACTION AND RELATED MATTERS. Shareholders will be able to obtain a free copy of the definitive prospectus, as well as other filings containing information about UMB and El Dorado, without charge, at the SEC’s website (http://www.sec.gov). Copies of the prospectus and the filings with the SEC that will be incorporated by reference in the prospectus can also be obtained, without charge, by directing a request to UMB Financial Corporation, Attention: Corporate Secretary, 1010 Grand Boulevard, Kansas City, Missouri 64106 or to El Dorado Savings Bank, F.S.B., Attention: Corporate Secretary, 4040 El Dorado Road, Placerville, California 95667.

Before making any voting or investment decision, investors and security holders are urged to read carefully the entire registration statement and other related information when they become available, including any amendments thereto, because they will contain important information about the proposed Transaction. Free copies of these documents may be obtained as described above.

UMB, El Dorado and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies from the shareholders of El Dorado in connection with the Transaction. Information regarding the directors and executive officers of each of UMB and El Dorado will be set forth in the registration statement on Form S-4 and the prospectus, as well as other related documents, to be filed or provided by UMB and/or El Dorado.

No Offer or Solicitation

This communication does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the Securities Act of 1933, as amended.