Securities registered under Section12(b) of the Exchange Act: Title of each class Common Stock, par value $0.01 per share5.75% Non-Cumulative Perpetual Preferred Stock SeriesB, par value $0.01 per share Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Act of1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to suchfiling requirements for the past 90 days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required tosubmit such files).Yes☒☐No Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company oran emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growthcompany” in Rule 12b-2 of the Exchange Act. (Check one): Large Accelerated FilerAcceleratedFiler☐Non-AcceleratedFiler☐Smaller Reporting Company☐Emerging Growth Company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with anynew or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act. Yes☐No On April21, 2026, the number of shares set forth below was outstanding with respect to each of the issuer’s classes of common stock:Common Stock, par value $0.01 per share 43,670,939 Texas Capital Bancshares, Inc.Form 10-QQuarter Ended March31, 2026 Index Item1.Financial Statements - UnauditedConsolidated Balance SheetsConsolidated Statements of Income and Other Comprehensive IncomeConsolidated Statements of Stockholders' EquityConsolidated Statements of Cash FlowsNotes to Consolidated Financial StatementsItem2.Management's Discussion and Analysis of Financial Condition and Results of OperationsItem3.Quantitative and Qualitative Disclosures About Market RiskItem4.Controls and Procedures Part II.—Other Information Item1.Legal ProceedingsItem1A.Risk FactorsItem 2.Unregistered Sales of Equity Securities and Use of ProceedsItem 6.Exhibits PART I - FINANCIAL INFORMATIONITEM 1. FINANCIAL STATEMENTSTEXAS CAPITAL BANCSHARES, INC.CONSOLIDATED BALANCE SHEETS - UNAUDITED TEXAS CAPITAL BANCSHARES, INC.CONSOLIDATED STATEMENTS OF INCOME AND OTHERCOMPREHENSIVE INCOME - UNAUDITED NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED Organization and Nature of Business Texas Capital Bancshares, Inc. (“TCBI” or the “Company”) is a registered bank holding company and a full-service financial servicesfirm that delivers customized solutions to businesses, entrepreneurs and individual customers. TCBI is headquartered in Dallas, withprimary banking offices in Austin, Dallas, Fort Worth, Houston and San Antonio, and has built a network of clients across the country. The Company’s business activities are conducted primarily through its wholly-owned bank subsidiary Texas Capital Bank (the“Bank”) and its wholly-owned non-bank subsidiary, TCBI Securities Inc., doing business as Texas Capital Securities. The Bank is aTexas state-chartered bank. Texas Capital Securities is a registered broker-dealer with the U.S. Securities and Exchange Commission(“SEC”) and a member of the Financial Industry Regulatory Authority and Municipal Securities Rulemaking Board. Basis of Presentation The Company’s accounting and reporting policies conform to accounting principles generally accepted in the United States (“GAAP”)and to generally accepted practices within the banking industry. Certain prior period balances have been reclassified to conform to thecurrent period presentation. The consolidated interim financial statements are unaudited, and certain information and disclosures in the notes to consolidatedunaudited financial statements that are presented in accordance with GAAP have been condensed or omitted. In the opinion ofmanagement, the interim financial statements include all normal and recurring adjustments and the disclosures made present a fairpresentation of the Company’s financial position and results of operations. The consolidated financial statements have been preparedin accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the SEC. Accordingly, thefinancial statements and the notes to the consolidated unaudited financial statements required by GAAP for complete annual financialstatements do not include all of the information and should be read in conjunction with the consolidated financial