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Third Quarter 2025Investor Presentation
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2 Cautionary Note on Forward Looking StatementsThis presentation contains statements regarding the proposed transactions between (1) Prosperity Bancshares, Inc. (“Prosperity”) and Southwest Bancshares, Inc. (“Southwest”) and (2) Prosperity and American Bank Holding Corporation (“American”); future financial and operating results; benefits and synergies of the transactions; future opportunities for Prosperity; the issuances of common stock of Prosperity contemplated by the Agreement and Plan of Merger by and between Prosperity and Southwest (the “Prosperity/Southwest Merger Agreement”) and the Agreement and Plan of Merger by and between Prosperity and American (the “Prosperity/American Merger Agreement” and, together with the Prosperity/Southwest Merger Agreement, the “Merger Agreements”); in connection with the proposed transaction between Prosperity and Southwest, the expected filing by Prosperity with the Securities and Exchange Commission (the “SEC”) of a registration statement on Form S-4 (the “Prosperity/Southwest Registration Statement”) and a prospectus of Prosperity and a proxy statement of Southwest to be included therein (the “Prosperity/Southwest Proxy Statement/Prospectus”); in connection with the proposed transaction between Prosperity and American, a registration statement on Form S-4 (the “Prosperity/American Registration Statement” and, together with the Prosperity/Southwest Registration Statement, the “Registration Statements”) and a preliminary prospectus of Prosperity and a proxy statement of American included therein (the “Prosperity/American Proxy Statement/ Prospectus” and, together with the Southwest Proxy Statement/Prospectus, the “Proxy Statement/Prospectuses”), which registration statement was filed with the SEC on September 17, 2025 and amended on September 30, 2025; the expected timing of the closing of the proposed transactions; the ability of the parties to complete the proposed transactions considering the various closing conditions and any other statements about future expectations that constitute forward-looking statements within the meaning of the federal securities laws, including the meaning of the Private Securities Litigation Reform Act of 1995, as amended, Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended. From time to time, oral or written forward-looking statements may also be included in other information released to the public. Such forward-looking statements are typically, but not exclusively, identified by the use in the statements of words or phrases such as “aim,” “anticipate,” “believe,” “estimate,” “expect,” “goal,” “guidance,” “intend,” “is anticipated,” “is expected,” “is intended,” “objective,” “plan,” “projected,” “projection,” “will affect,” “will be,” “will continue,” “will decrease,” “will grow,” “will impact,” “will increase,” “will incur,” “will reduce,” “will remain,” “will result,” “would be,” variations of such words or phrases (including where the word “could,” “may,” or “would” is used rather than the word “will” in a phrase) and similar words and phrases indicating that the statement addresses some future result, occurrence, plan or objective. Forward-looking statements include all statements other than statements of historical fact, including forecasts or trends, and are based on current expectations, assumptions, estimates, and projections about Prosperity and its subsidiaries or related to the proposed transactions between (1) Prosperity and Southwest and (2) Prosperity and American and are subject to significant risks and uncertainties that could cause actual results to differ materially from the results expressed in such statements. These forward-looking statements may include information about Prosperity’s possible or assumed future economic performance or future results of operations, including future revenues, income, expenses, provision for loan losses, provision for taxes, effective tax rate, earnings per share and cash flows and Prosperity’s future capital expenditures and dividends, future financial condition and changes therein, including changes in Prosperity’s loan portfolio and allowance for loan losses, future capital structure or changes therein, as well as the plans and objectives of management for Prosperity’s future operations, future or proposed acquisitions, the future or expected effect of acquisitions on Prosperity’s operations, results of operations, financial condition, and future economic performance, statements about the anticipated benefits of each of the proposed transactions, and statements about the assumptions underlying any such statement. These forward-looking statements are not guarantees of future performance and are based on expectations and assumptions Prosperity currently believes to be valid. Because forward-looking statements relate to future results and occurrences, many of which are outside of Prosperity’s control, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict. These risks and uncertainties include, but are not limited to, whether Prosperity can: successfully identify acquisition targets and integrate the businesses of acquired companies and banks; continue to sustain its current internal growth rate or total growth rate; provide products and services that appeal to its customers; continue to have access to debt and equity capital markets; and achieve its sales objectives. Other risks include, but are not limited to: the possibility that credit quality could deteriorate; actions of competitors; changes in laws and regulations (including changes in governmental interpretations of regulations and changes in accounting standards); a deterioration or downgrade in the credit quality and credit agency ratings of the securities in Prosperity’s securities portfolio; customer and consumer demand, including customer and consumer response to marketing; effectiveness of spending, investments or programs; fluctuations in the cost and availability of supply chain resources; economic conditions, including currency rate, interest rate and commodity price fluctuations; changes in trade policies by the United States or other countries, such as tariffs or retaliatory tariffs; and the effect, impact, potential duration or other implications of weather and climate-related events. Many possible events or factors could adversely affect the future financial results and performance of Prosperity, Southwest or American or the combined company and could cause those results or performance to differ materially from those expressed in or implied by the forward-looking statements. Such risks and uncertainties include, among others: (1) the risk that the cost savings and synergies from the transactions may not be fully realized or may take longer than anticipated to be realized, (2) disruption to Prosperity’s, Southwest’s and American’s businesses as a result of the announcements and pendency of the transactions, (3) the risk that the integration of Southwest’s and/or American’s businesses and operations into Prosperity, will be materially delayed or will be more costly or difficult than expected, or that Prosperity is otherwise unable to successfully integrate Southwest’s and/or American’s business into its own, including as a result of unexpected factors or events, (4) the failure to obtain the necessary approval by the shareholders of Southwest and/or American, (5) the ability by each of Prosperity, Southwest and/or American to obtain required governmental approvals of the transactions on the timeline expected, or at all, and the risk that such approvals may result in the imposition of conditions that could adversely affect Prosperity after the closing of the transactions or adversely affect the expected benefits of the transactions, (6) reputational risk and the reaction of each company’s customers, suppliers, employees or other business partners to the transactions, (7) the failure of the closing conditions in the applicable Merger Agreements to be satisfied, or any unexpected delay in closing the transactions or the occurrence of any event, change or other circumstances that could give rise to the termination of the applicable Merger Agreements, (8) the dilution caused by the issuances of additional shares of Prosperity’s common stock in the transactions, (9) the possibility that the transactions may be more expensive to complete than anticipated, including as a result of unexpected factors or events, (10) the outcome of any legal or regulatory proceedings that may be currently pending or later instituted against Prosperity before or after any of the transactions, or against Southwest or American, (11) diversion of management’s attention from ongoing business operations and (12) general competitive, economic, political and market conditions and other factors that may affect future results of Prosperity, Southwest and American. Prosperity disclaims any obligation to update such factors or to publicly announce the results of any revisions to any of the forward-looking statements included herein to reflect future events or developments. These and various other factors are discussed in Prosperity’s Annual Report on Form 10-K, Quarterly Reports on Form 10- Q, and Current Reports on Form 8-K, in each case filed with the SEC, and other reports and statements Prosperity has filed with the SEC. Copies of the SEC filings for Prosperity may be downloaded from the Internet at no charge from http://www.prosperitybankusa.com.
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3 Important InformationAdditional Information about the Transaction and Where to Find ItProsperity intends to file with the SEC the Prosperity/Southwest Registration Statement on Form S-4 to register the shares of Prosperity common stock to be issued to the shareholders of Southwest in connection withProsperity’s and Southwest’s proposed transaction. The Prosperity/Southwest Registration Statement will include the Prosperity/Southwest Proxy Statement/Prospectus which will be sent to the shareholders of Southwest inconnection with the proposed transaction. This communication is not a substitute for the Prosperity/Southwest Proxy Statement/Prospectus or any other document which Prosperity may file with the SEC. In connection withProsperity’s and American’s proposed transaction, Prosperity has filed with the SEC on September 17, 2025 the Prosperity/American Registration Statement on Form S-4, as amended on September 30, 2025 (the “AmendedProsperity/American Registration Statement”) (which Amended Prosperity/American Registration Statement was declared effective by the SEC on September 30, 2025), to register the shares of Prosperity common stock to beissued to the shareholders of American in connection with Prosperity’s and American’s proposed transaction. The Prosperity/American Proxy Statement/Prospectus will be delivered to shareholders of American. Prosperitymay also file other documents with the SEC regarding the proposed transaction. This communication is not a substitute for the Prosperity/American Proxy Statement/Prospectus or Amended Prosperity/American RegistrationStatement or any other document which Prosperity may file with the SEC. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE APPLICABLE REGISTRATION STATEMENT ON FORM S-4, THE APPLICABLE PROXYSTATEMENT/PROSPECTUS INCLUDED WITHIN THE APPLICABLE REGISTRATION STATEMENT ON FORM S-4 AND ANY OTHER RELEVANT DOCUMENTS TO BE FILED WITH THE SEC IN CONNECTION WITH THE PROPOSEDTRANSACTIONS OR INCORPORATED BY REFERENCE INTO THE APPLICABLE PROXY/STATEMENT PROSPECTUS, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY,BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT PROSPERITY, SOUTHWEST, AMERICAN AND THE APPLICABLE PROPOSED TRANSACTIONS. Investors and security holders may obtain free copies of thesedocuments through the website maintained by the SEC at http://www.sec.gov. You will also be able to obtain these documents, free of charge, from Prosperity at http://www.prosperitybankusa.com. Copies of theProsperity/American Proxy Statement/Prospectus (and the Prosperity/Southwest Proxy Statement/Prospectus, when it becomes available), can also be obtained, free of charge, by directing a request by telephone or mail toProsperity Bancshares, Inc., Prosperity Bank Plaza, 4295 San Felipe, Houston, Texas 77027 Attn: Investor Relations, (281) 269-7199, or with respect to the Prosperity/American Proxy Statement/Prospectus, to American BankHolding Corporation, 800 North Shoreline Boulevard, Corpus Christi, Texas 78401, Attn: Stephen Raffaele, (512) 306-5550 or, with respect to the Prosperity/Southwest Proxy Statement/Prospectus, Southwest Bancshares, Inc.,1900 NW Loop 410, San Antonio, Texas 78213, Attention: Investor Relations, (210) 807-5511, as applicable.No Offer or SolicitationThis communication is for informational purposes only and is not intended to and does not constitute an offer to subscribe for, buy or sell, or the solicitation of an offer to subscribe for, buy or sell, or an invitation to subscribefor, buy or sell any securities or a solicitation of any vote or approval in any jurisdiction, nor shall there be any sale, issuance or transfer of securities in any jurisdiction in which such offer, invitation, sale or solicitation would beunlawful 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,and otherwise in accordance with applicable law.
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Third Quarter Highlights•Net income of $137.6 million and earnings per share (diluted) of $1.45 for the three months ended September 30, 2025, an increase of 8.2% compared to the third quarter 2024•Assets of $38.3 billion, total loans of $22.0 billion, and deposits of $27.8 billion at September 30, 2025•Common equity tier 1 ratio of 17.53% and leverage ratio of 11.90% at September 30, 2025•Deposits increased $308.7 million during the third quarter 2025, or 4.5% annualized•Noninterest-bearing deposits of $9.5 billion, representing 34.3% of total deposits •Net interest margin increased 29 basis points to 3.24% compared to 2.95% for the third quarter 2024•Return (annualized) on third quarter average assets of 1.44%, and average tangible common equity of 13.43% in the third quarter 2025•Sound asset quality with annualized net charge-offs / quarterly average loans of 0.12%•Nonperforming assets to average earning assets remain low at 0.36%•Allowance for credit losses on loans and off-balance sheet credit exposures of $377.3 million and allowance for credit losses on loans to total loans, excluding Warehouse Purchase Program, of 1.64%•Increased cash dividend 3.5% to $0.60 per share for the fourth quarter 2025, representing the 22ndconsecutive annual increase with a compound annual growth rate of 10.7%•Announced the signing of a definitive merger agreement with Southwest Bancshares, Inc. headquartered in San Antonio•Pending acquisition of American Bank Holding Corporation, headquartered in Corpus Christi, Texas4Source: Company Documents
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OklahomaTexasEl PasoAmarilloLubbockMidlandOdessaTulsaOklahoma CityFort WorthAbileneDallasSan AntonioHoustonLaredoCorpus Christi VictoriaI NT E RS T A T E10 I NT E RS T A T E10 I NT E RS T A T E10 I NT E RS T A T E35 I NT E RS T A T E35 I NT E RS T A T E35 I NT E RS T A T E35 I NT E RS T A T E45 I NT E RS T A T E20 I NT E RS T A T E20 I NT E RS T A T E30 I NT E RS T A T E44 I NT E RS T T E44 40 IN TER STTE40 I NT E RS T A T E27Austin Strong Presence in Texas and Oklahoma (1) Per FDIC; Includes Texas headquartered commercial banks; Deposits as of 6/30/2025(2) Per proxy statement (Form DEF 14A) filed on 3/13/20255283 Full-Service Locations15 in Bryan/College Station Area6 in Central Oklahoma Area31 in Central Texas Area61 in Dallas/Fort Worth Area22 in East Texas Area62 in Houston Area33 in South Texas Area8 in Tulsa Area45 in West Texas Area •A Texas-based financial holding company with $38.3 billion in total assets•Prosperity has been ranked as one of Forbes America’s Best Banks since the list’s inception in 2010, and was ranked in the Top 10 for 14 consecutive years•Named “Best Overall Bank in Texas” by Money in 2025•Recognized by Newsweek as one of America’s Best Regional Banks in 2025•Ranked #3 in deposit market share in Texas (1)•Texas and Oklahoma continue to benefit from strong economies, and are home to 57 Fortune 500 headquartered companies•Shareholder driven with 4.2% fully diluted insider ownership(2)•Successful completion of 45 acquisitions (whole bank, branch and failed bank transactions)Wichita Falls
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Assets Deposits Total Loans Equity Balance Sheet Summary Source: Company Documents(1) Represents the Compound Annual Growth Rate from 12/31/2014 – 12/31/20246 Data as of 09/30/2025Loans $22.0 BnDeposits $27.8 BnAssets $38.3 Bn10 Year CAGR (1)Loans 9.1%Deposits 4.8%Assets 6.3%
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Note: Net income includes the following ($ in thousands)Provisionfor Credit$18,275 $7,560 $24,000 $14,325 $16,350 $4,300 $20,000 - - $18,540 $9,066 - —LossesLoanDiscount$95,875 $52,122 $38,970 $21,906 $13,909 $28,045 $91,341 $39,278 $7,401 $5,566 $17,490 $3,124 $2,855AccretionNet Income Net Income (Excluding Purchase Accounting Adjustments)Net Income (Excluding Non-Recurring Charges) Net Income (Excluding PAA and Non-Recurring Charges) Net Income Source: Company Documents(1) Excludes after-tax merger related provision and expenses related to recent acquisitions, gain on Visa Class B-1 stock exchange net of investment securities sales and FDIC special assessments7 (1)(1)
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Note: Net income includes the following ($ in thousands)Provisionfor Credit$18,275 $7,560 $24,000 $14,325 $16,350 $4,300 $20,000 - - $18,540 $9,066 - —LossesLoanDiscount$95,875 $52,122 $38,970 $21,906 $13,909 $28,045 $91,341 $39,278 $7,401 $5,566 $17,490 $3,124 $2,855AccretionEPS Core EPS (Excluding Purchase Accounting Adjustments)EPS (Excluding Non-Recurring Charges) Core EPS (Excluding PAA and Non-Recurring Charges) Earnings Per Share 8Source: Company Documents(1) Excludes after-tax merger related provision and expenses related to recent acquisitions, gain on Visa Class B-1 stock exchange net of investment securities sales and FDIC special assessments(1)(1)
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Net Interest Margin Source: Company Documents9Net Interest Margin (Tax Equivalent) Net Interest Margin (Excluding Purchase Accounting Adjustments)
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% of AssetsAcquired11.2%0.0%2.5%0.0%0.0%31.3%0.0%0.0%0.0%5.5%3.5%0.0%0.0% Acquisitions & Efficiency Ratio Source: Company Documents(1) Representative of target assets at closing (2) Calculated by dividing total noninterest expense, excluding credit loss provisions, by net interest income plus noninterest income, excluding net gains and losses on the sale or write down of assets and securities. Additionally, taxes are not part of this calculation.(3) Excludes after-tax merger related provision and expenses related to recent acquisitions, gain on Visa Class B-1 stock exchange net of investment securities sales and FDIC special assessments10 ($’s in millions) Total Assets Excluding AcquisitionsTotal Assets Acquired (1)Efficiency Ratio(2)Efficiency Ratio (Excluding Non-Recurring Charges)(3)
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(1) Interim periods shown on an annualized basis(2) Excludes after-tax merger related provision and expenses related to recent acquisitions, gain on Visa Class B-1 stock exchange net of investment securities sales and FDIC special assessments Return on Average Tangible Common Equity 11 (1)(1)ROATCE Tangible Common EquityROATCE (Excluding Non-Recurring Charges)(2)
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(1) Interim periods shown on an annualized basis(2) Excludes after-tax merger related provision and expenses related to recent acquisitions, gain on Visa Class B-1 stock exchange net of investment securities sales and FDIC special assessments Return on Average Assets 12 (1) (1)ROAAROAA (Excluding Non-Recurring Charges)(2)
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Source: Company Documents(1) Data for the three months ended September 30, 2025 Deposit Composition 13 Total Deposits: $27.8BnTotal Cost of Deposits: 1.38% (1) As of September 30, 2025($ in millions) Cost of Interest-Bearing Deposits: 2.11% (1)$mmCost (%)(1)Noninterest-Bearing Demand $9,522 0.00%Interest-Bearing Demand $4,766 0.76%Money Market & Savings $9,019 2.07%CDs & Other Time $4,475 3.60%
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Source: Company Documents Loan Growth 14Loans (Excluding Warehouse Purchase Program) Loan / Deposit Ratio (Excluding WPP)Warehouse Purchase Program (WPP) Loan / Deposit Ratio (Including WPP)
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Loan Portfolio Overview 15Source: Company Documents(1) Data for the three months ended September 30, 2025(2) Excludes $47 million in loans assigned to the Corporate Group(3) Core yield excludes purchase accounting adjustments(4) Excludes Warehouse Purchase Program (WPP) loans As of September 30, 2025($ in millions)Loan Portfolio by Category & GeographyLoans by Rate Structure Loans HFI (Excl. WPP): $20.7BnYield on Total Loans: 5.92% (1)~4.1yrAvg. LifeCore Yield on Loans HFI (Excl. WPP): 5.84% (1)(3)Total Loans: $22.0BnYield on Loans HFI (Excl. WPP): 5.90% (1) Loans By AreaAmount(2)(4)% of TotalBryan / College Station$9854.8%Central Oklahoma$5472.6%Central Texas$2,52012.2%Dallas / Ft. Worth$6,38230.8%East Texas$7353.6%Houston$4,57622.1%South Texas$1,7018.2%Tulsa$5282.5%West Texas$2,72913.2%
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Financial Services $480 26%R.E. & Const. $469 25%Manuf. / Indust. $297 16%Retail $234 12%Medical $101 5%Transportation $70 4%Other $228 12% Loan Portfolio Detail 16Source: Company Documents(1) Includes State & Political loans(2) Total includes a net unaccreted discount of ($1.1) million not shown in graph Portfolio CommentaryC&I Detail (Excluding Energy Loans)($ in millions)Construction Detail($ in millions)Commercial Real Estate Detail($ in millions)$5,797mmTotal$2,865mmTotal(2) As of September 30, 2025($ in millions)•Loan portfolio is diversified across the Bank’s market areas and by underlying collateral type •CRE and construction loans conservatively underwritten to cost of collateral•34% of commercial real estate is owner occupied$1,879mmTotal(1)Note: Average CRE loan balance outstanding equal to $1.1 millionRetail $1,386 24%Industrial $1,240 21%Other $932 16%Office $824 14%Multifamily (MF) $534 9%Hotels $442 8%Medical $439 8%Multifamily (MF) $741 26%Single Family (SF) $665 23%Lots & Land Dev. $512 18%Other $425 15%Raw Land $230 8%Retail $136 5%Office $92 3%Medical $56 2%Hotels $9 0%
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Changes to Allowance for Credit Losses1.66% ACL to Total Loans (1) 17(1) Excludes Warehouse Purchase Program (WPP) loans 1.64% ACL to Total Loans (1)Allowance for Credit LossesAllowance forUnfunded Commitments (Other Liabilities)Net charge-offsOutstanding balancesHistorical loss ratesNon-PCD specific reservesNet increased reserve related to changes in macro-economic conditions, and qualitative economic outlookAllowance for Credit LossesAllowance forUnfunded Commitments (Other Liabilities)PCD recoveries($4.5) million released related to resolved PCD loans without any charge offs during the third quarter($ in millions)$383.7 million $377.3 millionTotal Allowance for Credit Losses and Unfunded Commitments
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Source: Company Documents & Uniform Bank Performance ReportNote: NPAs include loans past due 90 days and still accruing(1) UBPR = Uniform Bank Performance Report; Peer Group 2 (113 banks) – Insured commercial banks having assets between $10 billion and $100 billion Asset QualityNPAs / Loans + OREO 18UBPR Peer Group (1)Prosperity Bank
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Non-Acquired Loan Charge-OffsAcquired Loan Charge-Offs Pre-CECLAcquired Loan Charge-Offs Post-CECLNet PCD Recoveries Post-CECLSource: Company Documents & Uniform Bank Performance ReportNote: NPAs include loans past due 90 days and still accruing(1) UBPR = Uniform Bank Performance Report; Peer Group 2 (113 banks) – Insured commercial banks having assets between $10 billion and $100 billion(2) Interim period net charge-off ratios shown on an annualized basis(3) Reflects all charge-offs and recoveries on acquired loans in accordance with CECL accounting practices; Prior to the adoption of CECL in the first quarter of 2020, PCD loans were classified as Purchased Credit Impaired (PCI) loans and their assigned fair-value marks were netted against the outstanding loan balance with a charge-off only being recorded when the loss exceeded the amount of fair-value marks remaining. Asset QualityNet Charge-Offs / Average Loans 19($ in millions)Net Charge-Offs(2)(2)(3) Net PCD RecoveriesUBPR Peer Group (1)Prosperity Bank(3)
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Source: Company Documents(1) Data for the three months ended September 30, 2025(2) Modified duration shown; Weighted average life equal to 4.4 years Securities Portfolio Detail 20 Total Securities: $10.2BnYield on Securities: 2.19% (1)Duration: 3.8 (2)Avg. Yearly Cash Flow: ~$1.9Bn96.8% Held to Maturity3.2% Available for Sale As of September 30, 2025($ in millions) $mmMortgage-Backed Securities $9,686Collateralized Mortgage Obligations $448States & Political Subdivisions $70Other Securities $22U.S. Government Agency Securities $6
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Source: S&P Global. Market data as of 9/30/2025.21 $100,000 invested in Prosperity’s IPO on 11/12/98 was worth $1,852,555on 9/30/2025Total Return PerformanceIPO (November 12, 1998) to September 30, 2025
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$0.25$0.31$0.35$0.41$0.46$0.51$0.57$0.64$0.72$0.80$0.89$0.99$1.12$1.24$1.38$1.49$1.69$1.87$1.99$2.11$2.21$2.26 $0.00$0.25$0.50$0.75$1.00$1.25$1.50$1.75$2.00$2.25$2.50 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 Compound Annual Growth Rate from 2003 - 2024 was 11.1% (a) 2024 dividend consists of $0.56 per share declared in Q1 2024, 2Q 2024, 3Q 2024 and $0.58 per share declared in 4Q 2024 Dividend History 22 (a) (Declared)
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2026- 2031Prosperity Proj. PopulationProsperity Deposits GrowthMetropolitan Statistical Area Presence ($mm) (%)Austin-Round Rock-San Marcos, TX$1,992 9.3%Jacksonville, FL 8.8%Orlando-Kissimmee-Sanford, FL 8.3%Raleigh-Cary, NC 8.3%Houston-Pasadena-The Woodlands, TX$5,659 7.3%Dallas-Fort Worth-Arlington, TX$5,834 7.3%Charlotte-Concord-Gastonia, NC-SC 7.2%San Antonio-New Braunfels, TX$2,498 7.1%Tampa-St. Petersburg-Clearwater, FL 6.7%Greenville-Anderson-Greer, SC 6.6%Nashville-Davidson--Murfreesboro--Franklin, TN 5.7%Miami-Fort Lauderdale-West Palm Beach, FL 5.7%Phoenix-Mesa-Chandler, AZ 5.6%Las Vegas-Henderson-North Las Vegas, NV 5.3%Atlanta-Sandy Springs-Roswell, GA 4.2% Presence in Fast-Growing Markets•As of August 2025, Texas led all states for jobs gained over the month and over the year, setting new records for total jobs•Ranked #2 on the Fortune 500 list with 54 headquartered companies as of June 2025•As of August 2025, Texas employment had grown 1.4% YoY, outpacing the US growth rate by 0.5% 23Source: S&P Global, Fortune, Office of the Texas Governor, Texas Workforce Commission and Oklahoma Business Voice.(1) Includes MSAs with greater than one million in total population. Deposit data as of 6/30/2025; Prosperity deposits shown pro forma for pending acquisitions Positioned in Strong MarketsTop 15 Fastest Growing MSAs in the U.S. (1) Oklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma CityOklahoma City 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WorthAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinAustinMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandMidlandSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioSan AntonioDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasDallasHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonHoustonCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiCorpus ChristiLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockLubbockFort WorthFort Worth•Oklahoma City and Tulsa MSAs comprise over 60% of the state’s population, which are two of the sixty largest MSAs in the country•Oklahoma is home to 3 Fortune 500 companies as of June 2025•As of August, Oklahoma had attracted nearly $14 billion in new capital investment in 2025, nearly doubling its previous record
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LouisianaBristow Group, Inc. (BRS)Engaged Media Studios, Inc. (EMS)EPL Oil & Gas, Inc.Fluence AnalyticsNGC TransmissionRepublic FinanceArkansasGolden LivingMurphy Oil Corporation (MUR)US Rare Earths Inc. (UREE)AlabamaTorchmark Corporation (TMK)Zoes Kitchen (ZOES)GeorgiaCharterUPCyntech Technologies (CYNT)NYLO HotelsFloridaCCS Medical DreamVisionFirehawk AerospaceiWorld Projects & Systems, Inc. (IWPS)LikewizeOptymPGA of AmericaPuget Technologies, Inc. (PUGE)QSAM BiosciencesSoftServeNorth CarolinaDex Media (DXM)Washington D.C.EF Johnson Technologies, Inc.MassachusettsCimage NovasoftCircor Energy (CIR)Invensys Process SystemsLiberty MutualNTT Data Inc. (TYO.9613)Psychemedics Corporation (PMD)RaytheonVCE Corp.ConnecticutAccudyne IndustriesFrontier Communications (FYBR)iCall Inc.TradeCapture Inc.New JerseyAmeriflexComparex USACreston ElectronicsCVE TechnologyHoneywell PMTMaryland5G LLCBroadwing Corp.Geico Insurance DivisionHanger Inc. (HGR)Tucci PoloPennsylvaniaArchaea EnergyATI Inc.Big Brothers Big SistersCDI EngineeringHyllionLinn Energy, LLC (LINE)MPOWER MobileUnion Drilling, Inc.MichiganCambium Learning (ABCD)Comerica (CMA)New YorkAlkegenAmerican Locker Group Inc. (ALGI)Banorte-Ixe Securities International, LTDBucha BioDarkPulseDataTreasury CorpFiesta Restaurant Group (FRGI)Greatbatch (GB)HMS Holdings (HMSY)JP Morgan (6,000 workers)Signature Systems GroupSI GroupSix Flags Entertainment (SIX)Visionworks of AmericaOhioCovington Group, Inc.CyrusOne (CONE)Robbins & MyersVictory CapitalMissouriElite Advanced PolymersEmerson Process ManagementKupper Parker Comm.PotentiaMetricsUlrich medical USA, Inc.TennesseeElite Data Services, Inc. (DEAC)Forward Air Corp. (FWRD)Miller Energy Resources, Inc. CaliforniaAatonomyAccentCareActive NetworksAECOMAEND Industries, Inc.Allied Electronic RecyclingALL-Q-TELL Corp.AllyMe Group, Inc.Amazing MagnetsAmeriflight LLCAnything Liquid ManufacturingAviat Networks, Inc.AviatrixBanker’s Toolbox, Inc.Boingo WirelessBoreland Software CorporationBoring Co.Cacique FoodsCaliber Collision CentersCalpineCCRA Travel SolutionsCelliPont BioscienceChannell Commercial Corp.CompassLearningConsolidated Electrical DistributorsCopart (CPRT)Core-MarkDaegis, Inc. (DAEG)DASAN Zhone Solutions, Inc.DBGDigital RealtyDimensional Fund AdvisorsDMX MUSIC, Inc.DynaPump, Inc.EDM LabortoriesEpicore Software CorporationFarmer Brothers (FARM)Farmer Veteran CoalitionFinical, Inc.Firefly Space SystemsFirst Foundation, Inc.Fluor Corporation (FLR)FonalityFreebirds World BurritoGlenmount Global SolutionsGoodguys Rod & Custom AssociationGraze, Inc. (GRAZ)Green DotHarmonateHBCI HUBHewlett Packard EnterpriseHID GlobalHuttoInbentaIntegrated Defense Products (IDP)Ironclad Performance Wear Corp.Jacobs EngineeringJamba Juice CompanyKelly-Moore PaintsKubotaLandsea Homes CorporationLiberty Fitness Holdings, LLCLoanDepot, LLCM2M Certified, Inc.Marco Fine ArtsMC Endeavors, Inc. (MSMY)McKesson Corp (MCK)MDB CapitalMitratechMondeeMonkey Sports Inc.MVTransportationNoodoe EVObagi CosmeceuticalsOccidental Ptetroleum (OXY)OmniTracsOracle CorporationOriginClear, Inc. Pacific Union FinancialPain Therapeutics (PTIE)Primoris Services Corporation (PRIM)Quality Custom Distribution Services, Inc.QuestionPro Inc.R2SonicRed Mango, Inc.Review WaveRevionics, Inc.Rifle GearRight On Brands, Inc.Ruiz FoodsSanyo EnergySionix Corp. (SINX)Solera Holdings (SLH)Sovereign FlavorsSuperconductor Technologies (SCON)Telmar Network Technology, Inc. Tenet Healthcare (THC)Tesla, Inc. (TSLA)The Allen Group, Inc.ThermasolThermomixToyota USA (TM)Trend Micro (TYO.4704)Vendor Resource ManagementVermillion, Inc. (VRML)Visual NumericsW3globalWaste Connections, Inc. (WCN)WebsenseXeris Pharmaceuticals WashingtonFisher InvestmentsLifeLast, Inc.National Scooter Co.Prometheous Energy CompanyRAW Capital Home BuyersNevadaCoreSpaceEnviroSafe Demil LLCInvoice Home Inc.ColoradoCagney Global LogisticsGlobal Clean Energy, Inc. (GCEI)Heartland Oil & Gas Corp.Magpul IndustriesPar Petroleum Corporation (PARR)QuovadxSun River Energy, Inc. (SNRV)ArizonaEoS FitnessQuest Resource Holdings Corp. (QRHC)Strategic Armory Corps (SAC)OklahomaCasedhole Solutions , Inc.CITGO Petroleum CorpGlobal Power Equipment GroupHilti North AmericaLinkAmericaNATCO Group, Inc.Petrohwk Energy CorpRing Energy, Inc. (REI)Soalr Winds (SWI)StadiumDropTrinity Hospice Inc.KansasAlco Stores (ALCS)Enerlex Resources, Inc.Layne Christensen Co.(LAYN)Lulu’s Dessert CorpNebraskaHeartland Automotive ServicesMontanaViZnMinnesotaAmerican Environmental Energy, Inc. (AEEI)EmpowerMXEnerlex Resources, Inc.LecTec Corp.MoneyGram (MGI)Ottobock HealthcareResideo Technologies Inc.Speed CommerceWestwoodCanadaAbsolute Software (ABT)Bio-Solutions Corp (BISU)Direct EnergyMitel Corp (MITL)MoneyGram (MGI)QI Systems Inc. Speed CommerceCorporate Relocations to Texas (2004 – Present) 24 VirginiaCapital One Corporate Relocations to TexasOregonCrowdstreet, Inc.Q5iDSocati Corp.MississippiElite Advanced Polymers IllinoisBL Restaurant GroupBoeing (Global Services Business)CaterpillarEleikoExtenet SystemsFerris ManufacturingGreat Lakes Dredge & Dock CorporationMedMark Services, Inc.Monolith Technology Hldgs, LLCNeovia LogisticsParus Interactive, Inc.RMG Networks (RMGN)Schumacher ElectricSolarBridge Technologies, Inc.State FarmTop Golf Source: Office of the Texas Governor.
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•The Houston MSA is the 5thlargest in the United States by population with nearly 8.0 million residents– Population is expected to grow 7.3% from 2026 – 2031 (compared to the 2.6% projected growth for the U.S.)– Current Median Household Income is $87k (in line with $87k for the U.S.)•Home to NASA’s Johnson Space Center and Texas Medical Center – the world’s largest medical complex•As of July 2025, total nonfarm employment has increased 1.8% YoY, compared to the nationwide increase of 0.9%•As of July 2025, employment in Houston has increased 2.1% YoY in the trade, transportation, and utilities sector compared to 0.5% nationwide•Houston is a hub for renewable energy employment– As of September 2025, the solar workforce grew by 45.4% YoY and Houston leads the nation in wind power employment, with renewable energy representing ~1/12 new jobs in the region25Source: S&P Global, Bureau of Labor Statistics, Greater Houston Partnership.Note: References to Houston refer to the Houston-Pasadena-The Woodlands metropolitan statistical area. Houston Market HighlightsHouston Market Highlights Houston Franchise Select Fortune 500 Companies
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•The Dallas/Ft. Worth MSA is the 4th largest in the United States by population with nearly 8.6 million residents– Population is expected to grow 7.3% from 2026 – 2031 (compared to the 2.6% projected growth for the U.S.)– Median Household Income is expected to grow to $109k by 2031(compared to $97k for the U.S.)•As of July 2025, total nonfarm employment has increased 1.0% YoY, compared to the nationwide increase of 0.9%•Employment in Dallas/Ft. Worth has increased 2.6% YoY in the government sector and 1.8% in the leisure & hospitality sector, compared to 0.7% and 1.2% nationwide, respectively•Dallas is set to reshape US equity markets – In September 2025, the SEC approved the Texas Stock Exchange (TXSE) to launch in Dallas next year. Backed by $120 million from major investment firms, the TXSE is positioned to be a direct challenger to NYSE and Nasdaq Select Fortune 500 Companies26Source: S&P Global, Bureau of Labor Statistics, Texas Tribune.Note: References to Dallas refer to the Dallas – Fort Worth – Arlington metropolitan statistical area. Market Highlights Dallas / Ft. Worth Franchise Dallas/Ft. Worth Market Highlights DallasArlingtonFort WorthIrvingGarland
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Market Highlights•The Austin MSA is the 25thlargest in the United States by population with over 2.6 million residents– Population is expected to grow 9.3% from 2026 – 2031 (compared to the 2.6% projected growth for the U.S.)– Median Household Income is expected to grow to $126k by 2031 (compared to $97k for the U.S.)•As of July 2025, the unemployment rate has decreased 7.9% YoY, compared to the nationwide increase of 2.2%– Employment in Austin has increased 2.9% YoY in the financial activitiessector and 1.8% in the government sector, compared to 1.1% and 0.7% nationwide, respectively•Austin is transforming into a tech powerhouse – Over the past five years, Austin’s high-tech sector has generated 30,000 new jobs, including an increase of more than 8,000 in software development roles aloneSource: S&P Global, Bureau of Labor Statistics, Work Force Solutions.Note: References to Austin refer to the Austin – Round Rock – San Marcos metropolitan statistical area.27 Austin Market HighlightsAustin Franchise Select Fortune 500 Companies Round RockAustinSan Antonio
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Contact Information 28 Corporate HeadquartersInvestor ContactsProsperity Bank Plaza4295 San FelipeHouston Texas 77027281-269-7199 TelephoneDavid ZalmanChairman & CEO979-543-2200david.zalman@prosperitybankusa.comCullen ZalmanEVP – Banking & Corporate Activities281-269-7176cullen.zalman@prosperitybankusa.com