424B5

We are offering $100,000,000 of our 6.50% Subordinated Notes due 2042, which we refer to as the “Notes” in this prospectus supplement and as “Subordinated Debt Securities” in the accompanying prospectus. The Notes are unsecured, subordinated debt instruments. The Notes will bear interest at the rate of 6.50% per year, payable quarterly on March 21, June 21, September 21 and December 21 of each year, commencing on December 21, 2012. We have granted the underwriters an option to purchase additional Notes in an aggregate principal amount of up to $15,000,000, at the public offering price, less the underwriting discounts and commissions, to cover over-allotments, if any.

The Notes will rank (i) senior in right of payment to our junior subordinated debentures issued to our statutory trusts, (ii) equally in right of payment with any of our unsecured, subordinated debt the terms of which provide that such indebtedness ranks equally with the Notes, and (iii) subordinate in right of payment to our Senior Indebtedness (as defined under “Description of the Notes—Ranking”). In addition, the Notes will be structurally subordinated to all existing and future indebtedness, liabilities and other obligations, including deposits, of our subsidiaries. Currently, our only subsidiary is Texas Capital Bank, National Association, which we refer to as “Texas Capital Bank” or “Bank” in this prospectus supplement.

The Notes will be issued in fully-registered book-entry form without coupons and in denominations of $25 and integral multiples of $25 in excess thereof. The Notes will mature on September 21, 2042.

On September 21, 2017, or on any interest payment date thereafter, we may redeem the Notes in whole at any time or in part from time to time, at 100% of the principal amount, plus accrued and unpaid interest. The Notes will not be redeemable at the option of the holder and will not be entitled to any sinking fund.

The Notes will not be obligations of, or guaranteed by, our existing or future subsidiaries, including our Bank. As a financial holding company, our ability to service our obligations, including the Notes, is dependent on dividends received from our subsidiaries and funds raised by us from borrowings or in the capital markets.

Investing in the Notes involves risks. You should carefully read this prospectus supplement, the accompanying prospectus, our periodic reports and other information we file with the Securities and Exchange Commission and “Risk Factors” beginning on page S-6 of this prospectus supplement and on page 3 of the accompanying prospectus before making a decision to purchase the Notes.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus supplement. Any representation to the contrary is a criminal offense.

The Notes are not deposits or other obligations of our Bank and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency or instrumentality.

The underwriters expect to deliver the Notes to purchasers in book-entry form only, through the facilities of The Depository Trust Company, against payment therefor on or about September , 2012. Beneficial interests in the Notes will be shown on, and transfers thereon will be effected only through, records maintained by The Depository Trust Company and its participants.

You should rely only on the information contained in this prospectus supplement and the accompanying prospectus. We have not, and the underwriters have not, authorized any other person to provide you with information that is different from that contained in this prospectus supplement or the accompanying prospectus. If anyone provides you with different or inconsistent information, you should not rely on it. We are not making an offer of these securities in any jurisdiction where the offer is not permitted. You should assume that the information appearing in this prospectus supplement and the accompanying prospectus is accurate only as of their respective dates. Our business, financial condition and results of operations may have changed since those dates. This prospectus supplement supersedes the accompanying prospectus to the extent it contains information that is different from or in addition to the information in that prospectus.

This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering and certain other matters and also adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The second part, the accompanying prospectus, gives more general information about us and the Notes offered hereby. Generally, when we refer to the prospectus, we are referring to both parts of this document combined. To the extent the description of this offering in this prospectus supplement differs from the description of our Notes in the accompanying prospectus or any document incorporated by reference filed prior to the date of this prospectus supplement, you should rely on the information in this prospectus supplement.

We are offering to sell, and seeking offers to buy, the Notes only in jurisdictions where offers and sales are permitted. The distribution of this prospectus and the offering of the Notes in certain jurisdictions may be restricted by law. Persons outside the United States who come into possession of this prospectus must inform themselves about, and observe any restrictions relating to, the offering of the Notes and the distribution of this prospectus outside the United States. This prospectus does not constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any Notes offered by this prospectus by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation.

It is important for you to read and consider all information contained in this prospectus supplement and the accompanying prospectus, including the documents incorporated by reference therein, in making your investment decision. You should rely only on the information contained in, or incorporated by reference in, this prospectus supplement and the accompanying prospectus. We have not authorized anyone to provide you with information different from that contained in this prospectus. This prospectus may only be used where it is legal to sell Notes. You should not assume that the information that appears in this prospectus supplement, the accompanying prospectus and any document incorporated by reference is accurate as of any date other than their respective dates. Our business, financial condition, results of operations and prospects may have changed since the date of such information,

In this prospectus supplement, “TCBI”, the “Company,” “we,” “our,” “ours,” and “us” refer to Texas Capital Bancshares, Inc., which is a financial holding company headquartered in Dallas, Texas, and its subsidiaries on a consolidated basis, unless the context otherwise requires. References to “Texas Capital Bank” or “Bank” refer to Texas Capital Bank, National Association, which is our banking subsidiary.

U.S. Bank National Association, has not participated in the preparation of this prospectus supplement and assumes no responsibility for its content.

This prospectus supplement, the accompanying prospectus and the documents incorporated by reference herein contain statements that are considered “forward looking statements” within the meaning of United States federal securities laws. In addition, TCBI and its management may make other written or oral communications from time to time that contain forward-looking statements. Forward-looking statements, including statements about industry trends, management’s future expectations and other matters that do not relate strictly to historical facts, are based on assumptions by management, and are often identified by such forward-looking terminology as “expect,” “look,” “believe,” “anticipate,” “estimate,” “seek,” “may,” “will,” “trend,” “target,” and “goal” or similar statements or variations of such terms. Forward-looking statements may include, among other things, statements about TCBI’s confidence in its strategies and its expectations about financial performance, market growth, market and regulatory trends and developments, acquisitions and divestitures, new technologies, services and opportunities and earnings.

Forward-looking statements are subject to various risks and uncertainties, which change over time, are based on management’s expectations and assumptions at the time the statements are made and are not guarantees of future results. Management’s expectations and assumptions, and the continued validity of the forward-looking statements, are subject to change due to a broad range of factors affecting the national and global economies, the equity, debt, currency and other financial markets, as well as factors specific to TCBI and its subsidiaries, including Texas Capital Bank.

Actual outcomes and results may differ materially from what is expressed in our forward-looking statements and from our historical financial results due to the factors discussed elsewhere in this prospectus or disclosed in our other Securities and Exchange Commission (“SEC”) filings. Forward-looking statements included herein should not be relied upon as representing our expectations or beliefs as of any date subsequent to the date of this prospectus. TCBI undertakes no obligation to revise the forward-looking statements contained in this prospectus to reflect events after the date of this prospectus. The factors discussed herein are not intended to be a complete summary of all risks and uncertainties that may affect our businesses. Though we strive to monitor and mitigate risk, we cannot anticipate all potential economic, operational and financial developments that may adversely impact our operations and our financial results. Forward-looking statements should not be viewed as predictions and should not be the primary basis upon which investors evaluate TCBI.

PROSPECTUS SUPPLEMENT SUMMARY

This summary highlights certain information from this prospectus supplement and the accompanying prospectus, and it may not contain all of the information that is important to you. To understand the terms of the Notes offered hereby, you should read this prospectus supplement and the accompanying prospectus carefully. Together, these documents describe the specific terms of the Notes we are offering. You should carefully read the sections titled “Risk Factors” in this prospectus supplement and in the accompanying prospectus and the documents identified in the section “Where You Can Find More Information.” Except as otherwise noted, all information in this prospectus supplement assumes the underwriters’ option to purchase additional Notes is not exercised.

The Company

Texas Capital Bancshares, Inc., a financial holding company, is the parent of Texas Capital Bank, National Association, a national bank headquartered in Dallas, with banking offices in Dallas, Houston, Fort Worth, Austin and San Antonio, the state’s five largest metropolitan areas. TCBI offers a variety of banking products and services to our customers. We have focused on organic growth of Texas Capital Bank and on quality loan and deposit relationships. We are primarily a secured lender, and, as a result, we have experienced a low percentage of charge-offs relative to both total loans and non-performing loans since inception. Our loan portfolio is diversified by industry, collateral and geography in Texas.

As of June 30, 2012, we had total assets of approximately $9.1 billion, total stockholders’ equity of approximately $680.7 million, loans held for investment of $6.2 billion and total loans of $8.6 billion, and demand deposits of $2.0 billion and total deposits of $6.7 billion. For the quarter ended June 30, 2012, net income available to common shareholders from continuing operations was $29.6 million, and fully-diluted income from continuing operations per share was $0.76.

Business Strategy

Drawing on the business and community ties of our management and their banking experience, our strategy is to continue building an independent bank that focuses primarily on middle market business customers and successful professionals and entrepreneurs in each of the five major metropolitan markets of Texas. To achieve this, we seek to implement the following strategies:

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targeting middle market business and successful professionals and entrepreneurs;

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growing our loan and deposit base in our existing markets by hiring additional experienced Texas bankers;

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continuing our emphasis on credit policy to maintain credit quality consistent with long-term objectives;

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improving our financial performance through the efficient management of our infrastructure and capital base, which includes:

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leveraging our existing infrastructure to support a larger volume of business;

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maintaining stringent internal approval processes for capital and operating expenses;

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continuing our extensive use of outsourcing to provide cost-effective operational support with service levels consistent with large-bank operations; and

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extending our reach within our target markets of Austin, Dallas, Fort Worth, Houston and San Antonio through service innovation and service excellence.

Our principal executive offices are located at 2000 McKinney Avenue, Suite 700, Dallas, Texas 75201 and our telephone number is (214) 932-6600. Our Internet address is http://www.texascapitalbank.com. The reference to our website address does not constitute incorporation by reference of the information contained on the website, which should not be considered part of this prospectus.

The Offering

Issuer

Texas Capital Bancshares, Inc.

Notes Offered

$100,000,000 principal amount of our 6.50% Subordinated Notes due 2042 (the “Notes”).

Over-allotment option

Maturity Date

September 21, 2042.

Interest Rate

6.50% per year, computed on the basis of a 360-day year of twelve 30-day months.

Interest Payment Dates

March 21, June 21, September 21 and December 21 of each year, commencing on December 21, 2012. If the interest payment falls on a day that is not a Business Day, interest will be paid on the next succeeding Business Day.

Record Dates

March 6, June 6, September 6 and December 6, as the case may be, immediately preceding the respective interest payment date, whether or not a Business Day.

Optional Redemption

We may elect to redeem the Notes in whole at any time or in part from time to time on September 21, 2017, or on any interest payment date thereafter at a redemption price equal to 100% of the principal amount, plus accrued and unpaid interest, to the date of redemption. The Notes will not be entitled to the benefit of any sinking fund. The Notes will not be subject to repayment at the option of the holder at any time prior to maturity.

Subordination; Ranking

The Notes will not be obligations of, or guaranteed by, our existing or future subsidiaries, including our Bank. As a

financial holding company, our ability to service our obligations, including the Notes, is dependent on dividends received from our subsidiaries and funds raised by us from borrowings or in the capital markets.

The Notes do not limit our or our subsidiaries’ ability to incur additional debt, including debt that ranks senior in right of payment to the Notes.

Events of Default

Certain events of bankruptcy, insolvency or receivership relating to us or a “principal subsidiary bank” (as defined in “Description of the Notes—Events of Default”) are events of default with respect to the Notes.

If an event of default has occurred, the principal of and accrued but unpaid interest on the Notes will automatically, and without any declaration or other action on the part of the trustee or any holder of Notes, become immediately due and payable.

A default in the payment of principal of or interest on the Notes or in our non-performance of any other obligation under the Notes or the indenture will not constitute an event of default under the indenture and will not give rise to any right of acceleration.

Denominations; Book-Entry

The Notes will be issued in fully-registered book-entry form without coupons and in denominations of $25 and integral multiples of $25. The Notes will be represented by one or more global Notes that will be deposited with and registered in the name of The Depository Trust Company or its nominee. We will not issue certificated Notes, except in the limited circumstances described under “Book-Entry System—The Depository Trust Company.”

Listing

The Notes constitute a new issue of securities with no established trading market. We intend to apply to list the Notes on the Nasdaq Global Select Market under the symbol “TCBIL.” If the application is approved, we expect trading of the Notes on the Nasdaq Global Select Market to begin within 30 days of the original issue date of the Notes. We cannot assure you that an active after-market for the Notes will develop or be sustained, that holders of the Notes will be able to sell their Notes or that holders of the Notes will be able to sell their Notes at favorable prices.

Indenture and the Trustee

The Notes will be issued pursuant to the Indenture between us and U.S. Bank National Association, as trustee.

Governing Law

The Indenture governing the Notes and the Notes will be governed by and construed in accordance with the laws of

The State of New York. The Indenture will be subject to the provisions of the Trust Indenture Act of 1939, as amended.

Certain Federal Income and Estate Tax Considerations

You should consult your tax advisors concerning the U.S. federal income tax consequences of owning the Notes in light of your own specific situation, as well as consequences arising under the laws of any other taxing jurisdiction. See “Certain Federal Income and Estate Tax Considerations.”

Use of Proceeds

We intend to use the net proceeds of this offering for general corporate purposes, including providing capital support for the growth of Texas Capital Bank.

Nasdaq Global Select Market symbol

“TCBIL”

Risk Factors

See “Risk Factors” and the other information included or incorporated by reference in this prospectus supplement and the accompanying prospectus for a discussion of factors you should carefully consider before you decide whether to make an investment in our Notes.

You should carefully consider the risks described below before making an investment decision in the Notes. The risks and uncertainties described below are not the only ones facing us. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also impair our business operations. If any of the following risks actually occurs, our business, financial condition or results of operations could be materially adversely affected. In that case, our ability to meet our obligations under the Notes could be impaired, the trading price of our Notes could decline substantially, and/or you may lose all or part of your investment.

The Notes are subordinated in right of payment to our Senior Indebtedness and holders of Notes may recover ratably less than unsubordinated creditors in the event of our bankruptcy, liquidation or reorganization.

The Notes are subordinated obligations and rank junior in right of payment to the claims of holders of our Senior Indebtedness (as defined under “Description of the Notes—Ranking”). In the event of a bankruptcy, reorganization, insolvency, receivership or similar proceeding relating to us or our property, our creditors, other than those in respect of debt ranking equal with or junior to the Notes, will be entitled to receive payment in full of all obligations due to them before the holders of Notes will be entitled to receive any payment with respect to the Notes. As a result of the subordination provisions described above, in the event of our bankruptcy, liquidation or reorganization, holders of Notes may recover ratably less than unsubordinated creditors.

In addition, the indenture governing the Notes will prevent us from making payments in respect of the Notes if any principal, premium or interest in respect of Senior Indebtedness is not paid within any applicable grace period (including at maturity) or any other default on Senior Indebtedness occurs and the maturity of such Senior Indebtedness is accelerated in accordance with its terms. See “Description of the Notes—Ranking.”

The Notes are structurally subordinated to debt of our subsidiaries. In addition, our ability to pay principal and interest on the Notes is limited by dividends received from our subsidiaries, regulatory restrictions and the need to maintain sufficient consolidated capital, and in the event of our bankruptcy, your recovery may be impaired by priority claims of federal banking agencies.

Because we are a financial holding company, our rights and the rights of our creditors, including the holders of the Notes, to participate in the distribution or allocation of the assets of any subsidiary during its liquidation or reorganization, will be subject to the prior claims of the subsidiary’s creditors, unless we are ourselves a creditor with recognized claims against the subsidiary. Currently, our only subsidiary is our Bank. Any capital loans that we make to our Bank, or any future banking subsidiaries would be subordinate in right of payment to deposits and to other indebtedness of these banking subsidiaries. Claims from creditors (other than us), against the subsidiaries, may include long-term and medium-term debt and substantial obligations related to deposit liabilities, federal funds purchased, securities sold under repurchase agreements, and other short-term borrowings. The Notes will not be obligations of, or guaranteed by, our subsidiaries, and our subsidiaries will have no obligation to pay any amounts due on the Notes. The indenture governing the Notes does not limit our ability or the ability of our subsidiaries to issue or incur additional debt or preferred stock.

In addition, our ability to pay principal and interest on the Notes is limited by the amount of dividends received from our subsidiaries and funds raised by us from borrowings or in the capital markets. The ability of our Bank, and any future banking subsidiaries to pay dividends to us is limited by obligations of such subsidiaries to maintain sufficient regulatory capital and by other general restrictions on dividends that are applicable to such subsidiaries. If these regulatory requirements are not met, our Bank and any future banking subsidiaries will not be able to pay dividends to us, and we may be unable to pay dividends on our common stock or preferred stock.

Finally, as a financial holding company, our ability to declare and pay interest and principal on the Notes is subject to the guidelines of the Board of Governors of the Federal Reserve System (“Federal Reserve”) regarding capital adequacy. The Federal Reserve guidelines generally require us to review the effects of the cash payment of Tier 1 capital instruments (i.e., debt) on our financial condition. The guidelines also require that we review our net income for the current and past four quarters, and the level of payment of Tier 1 capital instruments for those periods, as well as our projected rate of earnings retention. Moreover, under Federal Reserve policy, a financial holding company is required to act as a source of financial and managerial strength to each of its banking subsidiaries and commit resources to their support. Such support may be required at times when a holding company may not otherwise be inclined to provide it. As discussed below, a financial holding company in certain circumstances could be required to guarantee the capital plan of an undercapitalized banking subsidiary in order for it to be accepted by the regulators. In the event of a financial holding company’s bankruptcy under Chapter 11 of the U.S. Bankruptcy Code, the bankruptcy trustee will be deemed to have assumed and is required to cure immediately any deficit under any commitment by the debtor holding company to any of the federal banking agencies to maintain the capital of an insured depository institution, and any claim for breach of such obligation will generally have priority over most other unsecured claims.

A ratings downgrade or other negative action by a ratings organization could adversely affect the Company as well as the liquidity and market value of the Notes.

Rating organizations publish credit ratings for the Company and its debt instruments. Credit ratings are indicators of a debt issuer’s ability to meet the terms of debt obligations in a timely manner. These ratings are important to the Company’s overall ability to access certain types of liquidity. Downgrades of the Company’s credit ratings, or an announced potential downgrade, could have a material adverse effect on the Company’s financial conditions and results of operations in many ways and may affect the trading value of the Notes. These include limiting the Company’s access to capital markets, increasing the cost of debt, and limiting its capacity to support the growth of our Bank. Conversely, because your return on the Notes depends upon factors in addition to our ability to pay our obligations, an improvement in our credit ratings will not necessarily reduce the other investment risks related to the Notes. A credit rating is not a recommendation to buy, sell or hold securities and may be revised or withdrawn by the rating agency at any time.

The Notes do not restrict our ability to incur additional debt, repurchase our securities or to take other actions that could negatively impact holders of the Notes.

We are not restricted under the terms of the Notes from incurring additional debt, including debt that ranks senior to the Notes, or repurchasing our securities. In addition, the limited covenants applicable to the Notes do not require us to achieve or maintain any minimum financial results relating to our financial position or results of operations. Our ability to recapitalize, incur additional debt and take a number of other actions that are not limited by the

terms of the Notes could have the effect of diminishing our ability to make payments on the Notes when due.

We may redeem the Notes, at our option, in whole at any time or in part from time to time on September 21, 2017 or on any interest payment date thereafter, at a redemption price equal to 100% of the principal amount, plus accrued and unpaid interest to the date of redemption. In the event we choose to redeem the Notes, you may not be able to reinvest the redemption proceeds in a comparable security at an effective interest rate as high as the interest rate on the Notes. Our redemption right also may adversely impact your ability to sell your Notes as the optional redemption date or period approaches.

An active trading market for the Notes may not develop, and any such market for the Notes may be illiquid.

The Notes constitute a new issue of securities with no established trading market. We intend to apply to list the Notes on the Nasdaq Global Select Market. If the application is approved, trading on the Nasdaq Global Select Market is expected to commence within 30 days of the original issue date of the Notes. However, listing the Notes on the Nasdaq Global Select Market does not guarantee that a trading market will develop or, if a trading market does develop, the depth or liquidity of that market or the ability of holders to sell their Notes easily. In addition, the liquidity of the trading market in the Notes, and the market prices quoted therefor, may be adversely affected by changes in the overall market for this type of security and by changes in our financial performance or prospects or in the prospects for companies in our industry generally. As a result, we cannot assure you that an active after-market for the Notes will develop or be sustained, that holders of the Notes will be able to sell their Notes or that holders of the Notes will be able to sell their Notes at favorable prices.

If a trading market does develop, general market conditions and unpredictable factors could adversely affect market prices for the Notes.

If a trading market does develop, there can be no assurance about the market prices for the Notes. Several factors, many of which are beyond our control, will influence the market price of the Notes. Factors that might influence the market price of the Notes include, but are not limited to:

If you purchase Notes, the Notes may subsequently trade at a discount to the price that you paid for them.

We may be adversely affected by the soundness of other financial institutions.

Financial services institutions are interrelated as a result of trading, clearing, counterparty, or other relationships. We have exposure to many different industries and counterparties, and we routinely execute transactions with counter-parties in the financial services industry, including commercial banks, brokers and dealers, investment banks and other institutional clients. As a result, defaults by, or even questions or rumors about, one or more financial services institutions, or the financial services industry generally, have led to market-wide liquidity problems and could lead to losses or default by us or other institutions. Many of these transactions expose us to credit risk in the event of a default by a counterparty or client. In addition, our credit risk may be exacerbated when the collateral held by us cannot be realized upon or is liquidated at prices not sufficient to recover the full amount of the credit or derivative exposure due to us. Any such losses could have a material adverse effect on our financial condition and results of operations.

Holders of the Notes have limited rights of acceleration upon events of default. They may accelerate payment of indebtedness only upon our bankruptcy, insolvency or reorganization, or the receivership of a principal banking subsidiary. See “Description of Notes—Events of Default.” In addition, the holders of senior indebtedness and certain other instruments, including our outstanding junior subordinated debentures issued to statutory trusts, that we or our subsidiaries have issued or may issue from time to time may declare such indebtedness in default and accelerate the due date of such indebtedness if an event of default under that instrument shall have occurred and be continuing, which may adversely impact our ability to pay obligations on the Notes.

The earnings of financial services companies are significantly affected by general business and economic conditions.

As a financial services company, our operations and profitability are impacted by general business and economic conditions in the United States and abroad. These conditions include short-term and long-term interest rates, inflation, money supply, economic conditions in foreign markets, political issues, legislative and regulatory changes, fluctuation in both debt and equity capital markets, broad trends in industry and finance and the strength of the U.S. economy and the local economies in which we operate, all of which are beyond our control. Continued weakness or further deterioration in economic conditions could result in decreases in loan collateral values and increases in loan delinquencies, non-performing assets and losses on loans and other real estate acquired through foreclosure of loans. Industry conditions, competition and the performance of our bank could also result in a decrease in demand for our products and services, among other things, any of which could have a material adverse impact on our results of operations and financial condition.

We are subject to extensive federal and state regulation and supervision. Banking regulations are primarily intended to protect depositors’ funds, federal deposit insurance funds and the banking system as a whole, not shareholders or debtholders. Federal regulation is also designed to cause the banking system to support governmental policies that may not be beneficial to our bank. These regulations affect our lending practices, capital structure, investment practices, accounting, financial reporting, dividend policy, operations and growth, among other things. These regulations also impose obligations to maintain appropriate policies, procedures and controls, among other things, to detect, prevent and report money laundering and terrorist financing and to verify the identities of our customers. Congress and federal regulatory agencies continually review banking laws, regulations and policies for possible changes. Changes to statutes, regulations or regulatory policies, including changes in interpretation or implementation of statutes, regulations or policies, could affect us in substantial and unpredictable ways. The changes in regulation and requirements imposed on financial institutions, such as the Dodd-Frank Act and Basel III accords, could subject us to additional costs, impose requirements for additional capital, limit the types of financial services and products we may offer and/or increase the ability of non-banks to offer competing financial services and products, among other things. Over a year after the adoption of the Dodd-Frank Act, there are still many related regulations that have not been written, so the effects of those are unknown at this time. In addition, from time to time we receive inquiries from our regulators regarding, among other things, lending practices, reserve methodology, interest rate and operational risk management, regulatory and financial accounting practices and policies and related matters. Any changes to our practices or policies requested or required by our regulators, or any changes in interpretation of regulatory policy applicable to our businesses, may have a material adverse effect on our business, results of operations, financial condition, credit quality or regulatory capital.

We expend substantial effort and incur costs to improve our systems, controls, accounting, operations, information security, compliance, audit capabilities, staffing and training in order to satisfy regulatory requirements, but the regulatory authorities may determine that such efforts are insufficient. Failure to comply with relevant laws, regulations or policies could result in sanctions by regulatory agencies, civil money penalties and/or reputation damage, which could have a material adverse effect on our business, financial condition and results of operations. While we have policies and procedures designed to prevent any such violations, there can be no assurance that such violations will not occur. In addition, the FDIC has imposed higher general and special assessments on deposits based on general industry conditions and as a result of changes in specific programs, and there is no restriction on the amount by which the FDIC may increase deposit assessments in the future. An increase in FDIC assessments could affect our earnings to a significant degree, and the industry may be subject to additional assessments, fees or taxes.

Furthermore, Sarbanes-Oxley, and the related rules and regulations promulgated by the SEC and Financial Industry Regulatory Authority (“FINRA”) that are applicable to us, have increased the scope, complexity and cost of corporate governance, reporting and disclosure practices. As a result, we have experienced, and may continue to experience, greater compliance costs.

The net proceeds, after underwriting discounts and estimated expenses, to us from the sale of the Notes offered hereby will be approximately $97,523,500 (or approximately $112,051,000 if the underwriters exercise their over-allotment option in full). We intend to use the net proceeds of this offering for general corporate purposes, including providing capital support for the growth of our Bank.

The following table presents our cash and cash equivalents and capitalization as of June 30, 2012:

The following table should be read in conjunction with the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the consolidated financial statements and notes thereto, in each case, that are included in the documents that are incorporated by reference into this prospectus.

The following table sets forth our consolidated ratio of earnings to fixed charges for all of the periods shown below. For purposes of computing these ratios, earnings represent the sum of income from continuing operations before taxes plus fixed charges. Fixed charges represent total interest expense, including and excluding interest on deposits. We paid dividends on preferred stock only during 2009. In the other periods presented below our ratio of earnings to combined fixed charges and preference dividends for those periods is identical to the ratio of earnings to fixed charges. On January 16, 2009, we completed the issuance of $75 million of perpetual preferred stock and related warrants to the U.S. Department of the Treasury under its voluntary Capital Purchase Program. We repurchased the preferred stock in May 2009. The $3.9 million accelerated deemed dividend in connection with the repurchase, combined with the preferred dividend of $523,000 for the second quarter of 2009 and the preferred dividend of $930,000 paid in the first quarter of 2009, resulted in a total dividend and reduction of earnings available to common stockholders of $5.4 million for the year ended December 31, 2009.

The Notes are a series of “Subordinated Debt Securities” described in the accompanying prospectus . The Notes will be issued under an Indenture to be dated as of September 21, 2012, which we refer to as the “Indenture,” between the Company and U.S. Bank National Association, as trustee, which we refer to as the “trustee.” Set forth below is a description of the specific terms of the Notes. This description supplements, and should be read together with, the description of the general terms and provisions of the securities set forth in the accompanying prospectus under the caption “Description of Debt Securities.” Capitalized terms used but not defined herein shall have the respective meanings set forth in the Indenture. The following description does not purport to be complete and is subject to, and is qualified in its entirety by reference to, the description in the accompanying prospectus and the Indenture pursuant to which the Notes will be issued.

We will issue $100,000,000 aggregate principal amount of the Notes pursuant to the Indenture. The Notes are unsecured, subordinated debt instruments and are intended to qualify as Tier 2 Capital under the guidelines established by the Federal Reserve for bank holding companies. The Notes will be issued in fully-registered book-entry form without coupons and in denominations of $25 and integral multiples of $25 in excess thereof.

The Indenture does not require the maintenance of any financial ratios or specified levels of net worth or liquidity. The Indenture will not contain provisions that would afford holders of Notes protection in the event of a sudden and dramatic decline in our credit quality resulting from any highly leveraged transaction, reorganization, restructuring, merger or similar transaction involving us that may adversely affect such holders. The Indenture does not restrict us in any way now or in the future from incurring additional indebtedness, including Senior Indebtedness (as defined below) that would rank senior in right of payment to the Notes.

The Notes will not be entitled to a sinking fund and cannot be redeemed at the option of the holder.

Subject to applicable law, as described below, interest on the Notes will accrue from and including the original issue date to, but excluding, the maturity date or earlier acceleration or redemption at an annual rate equal to 6.50%, and will be payable quarterly on March 21, June 21, September 21 and December 21 of each year, commencing on December 21, 2012, to the record holders at the close of business on the preceding March 6, June 6, September 6 or December 6, as applicable (whether or not a Business Day). If the interest payment date falls on a day that is not a Business Day, interest will be paid on the next succeeding Business Day (and without any interest or other payment in respect of any such delay).

Interest payments will include accrued interest from, and including, the original issue date, or, if interest has already been paid, from the last date in respect of which interest has been paid or duly provided for to, but excluding, the next succeeding interest payment date, the maturity date or the redemption date, as the case may be. The amount of interest payable for any interest payment period will be computed on the basis of a 360-day year comprised of twelve 30-day months. The term “interest payment period” refers to the quarterly period from and including

an interest payment date to, but excluding, the next succeeding interest payment date. Interest not paid on any payment date will accrue and compound quarterly at a rate per year equal to the rate of interest on the Notes until paid. References to “interest” include interest accruing on the Notes, interest on unpaid amounts and compounded interest, as applicable.

“Business day” means any day which is not a Saturday, a Sunday, a legal holiday or a day on which banking institutions or trust companies located in New York, New York are authorized or obligated by law to close.

The payment of the principal of and interest on the Notes will be expressly subordinated, to the extent and in the manner set forth in the Indenture, to the prior payment in full of all of our Senior Indebtedness.

“Senior Indebtedness” is defined to include principal of (and premium, if any) and interest, if any, on, and any other payment due pursuant to, any of the following:

unless, in any case, in the instrument creating or evidencing any such indebtedness or obligation, or pursuant to which the same is outstanding, it is expressly provided that such indebtedness or obligation is not superior in right of payment to the Notes or to other debt that is pari passu with or subordinate to the Notes.

“General Obligations” is defined as all of our obligations to pay claims of general creditors, other than obligations on the Notes and our indebtedness for money borrowed ranking equally or subordinate to the Notes. Notwithstanding the foregoing, if the Federal Reserve (or other competent regulatory agency or authority) promulgates any rule or issues any interpretation that defines general creditor(s) the main purpose of which is to establish a criteria for determining whether the subordinated debt of a bank holding company is to be included in its capital, then the term “General Obligations” will mean obligations to general creditors as described in that rule or interpretation.

The term claim when used in the previous definition has the meaning stated in section 101(5) of Title 11 of the United States Code, as now or hereafter in effect.

In addition, the Notes will be structurally subordinated to all existing and future indebtedness, liabilities and other obligations, including deposits, of our subsidiaries. Because we are a financial holding company, we rely primarily on dividends and other payments from our subsidiaries to pay interest and principal on our outstanding debt obligations and to make payments on our other securities. Currently, our Bank is our only subsidiary. Regulatory rules restrict our ability to withdraw capital from our Bank by dividends, loans or other means. See “Risk Factors—Risks Related to the Notes—The Notes are structurally subordinated to debt of our subsidiaries. In addition, our ability to pay principal and interest on the Notes is limited by dividends received from our subsidiaries, regulatory restrictions and the need to maintain sufficient consolidated capital, and in the event of our bankruptcy, your recovery may be impaired by priority claims of federal banking agencies.”

If certain events in bankruptcy, insolvency or reorganization occur, we will first pay all Senior Indebtedness, including any interest accrued after the events occur, in full before we make any payment or distribution, whether in cash, securities or other property, on account of the principal of or interest on the Notes. In such an event, we will pay or deliver directly to the holders of Senior Indebtedness, any payment or distribution otherwise payable or deliverable to holders of the Notes. We will make the payments to the holders of Senior Indebtedness according to priorities existing among those holders until we have paid all Senior Indebtedness, including accrued interest, in full.

If such events of bankruptcy, insolvency or reorganization occur, after we have paid in full all amounts owed on Senior Indebtedness, the holders of Notes together with the holders of any of our other obligations that rank equally with the Notes will be entitled to receive from our remaining assets any principal, premium or interest due at that time on the Notes and such other obligations before we make any payment or other distribution on account of any of our capital stock or obligations ranking junior to the Notes.

In addition, if any principal, premium or interest in respect of Senior Indebtedness is not paid within any applicable grace period (including at maturity) or any other default on Senior Indebtedness occurs and the maturity of such Senior Indebtedness is accelerated in accordance with its terms, we may not pay the principal of, or premium, if any, or interest on, the Notes or repurchase, redeem or otherwise retire any Notes, unless, in each case, the default has been cured or waived and any such acceleration has been rescinded or such Senior Indebtedness has been paid in full in cash, subject to certain exceptions as provided in the Indenture.

If we violate the Indenture by making a payment or distribution to holders of the Notes before we have paid all the Senior Indebtedness in full, then such holders of the Notes will have to pay or transfer the payments or distributions to the trustee in bankruptcy, receiver, liquidating trustee or other person distributing our assets for payment of the Senior Indebtedness.

Because of the subordination provisions of the Indenture, if we become insolvent, holders of Senior Indebtedness may receive more, ratably, and holders of the Notes may receive less, ratably, than our other creditors. Our inability to make payments on the Notes due to these subordination provisions will not prevent an event of default from occurring under the Indenture in connection with the Notes.

We may redeem the Notes in $25 increments in whole at any time or in part from time to time on September 21, 2017 or on any interest payment date thereafter, at a redemption price equal to 100% of the principal amount of the Notes plus accrued and unpaid interest to, but not including, the date of redemption.

Notice of any redemption will be mailed at least 30 days but not more than 60 days before the redemption date to each holder of Notes to be redeemed at its registered address. Unless we default in payment of the redemption price on the Notes, on and after the redemption date, interest will cease to accrue on the Notes or portions called for redemption.

If we give a notice of redemption in respect of any Notes, then prior to the redemption date, we will:

Notwithstanding the above, interest payable on or prior to the redemption date for any Notes called for redemption will be payable to the holders of the Notes on the relevant record dates for the related interest payment dates.

Once notice of redemption has been given and funds deposited as required, then upon the date of the deposit, all rights of the holders of the Notes so called for redemption will cease, except the right of the holders of the Notes to receive the redemption price and any interest payable in respect of the Notes on or prior to the redemption date and the Notes will cease to be outstanding. In the event that any date fixed for redemption of Notes is not a business day, then payment of the redemption price will be made on the next business day (without any interest or other payment in connection with this delay) with the same force and effect as if made on the original date. In the event that payment of the redemption price in respect of Notes called for redemption is improperly withheld or refused and not paid by us, interest on the Notes will continue to accrue at the then applicable rate from the redemption date originally

established by us for the Notes to the date the redemption price is actually paid, in which case the actual payment date will be the date fixed for redemption for purposes of calculating the redemption price.

Subject to applicable law (including, without limitation, U.S. federal securities law), we or our subsidiaries may at any time and from time to time purchase outstanding Notes by tender, in the open market or by private agreement.

If less than all of the Notes are to be redeemed, the particular Notes to be redeemed will be determined, in the case of Global Securities, in accordance with the procedures of the Depository and, in the case of definitive Debt Securities, by the Trustee on a pro rata basis, by lot or by such other method as in its sole discretion it shall deem appropriate and fair, provided that the unredeemed portion of the principal amount of any Note shall be in an authorized denomination (which shall not be less than the minimum authorized denomination) for such Note. The trustee will promptly notify us in writing of the Notes selected for redemption and, in the case of any Notes selected for partial redemption, the principal amount thereof to be redeemed.

We may not redeem the Notes in part if the principal amount has been accelerated and such acceleration has not been rescinded or unless all accrued and unpaid interest, has been paid in full on all outstanding Notes for all interest payment periods terminating on or before the redemption date.

The Notes will be issued only in fully-registered book-entry form without coupons in denominations of $25 each and integral multiples of $25 in excess thereof.

The Indenture will provide that certain events of bankruptcy, insolvency or receivership relating to us or a “principal subsidiary bank” are events of default with respect to the Notes.

The term “principal subsidiary bank” means (i) any bank subsidiary the consolidated assets of which constitute 25% or more of our consolidated assets and (ii) any other bank subsidiary designated as a “principal subsidiary bank” by our Board of Directors; provided that if the Federal Reserve notifies us that any bank subsidiary that is a principal subsidiary bank applying the tests in clause (i) or (ii) above does not qualify as a “major subsidiary depository institution” within the requirements of the Federal Reserve’s risk-based capital guidelines applicable to bank holding companies, such bank subsidiary will not be a principal subsidiary bank from and after the time we receive from the Federal Reserve such a notice. Currently, Texas Capital Bank is our only principal subsidiary bank.

If an event of default under the Indenture has occurred, the principal of and accrued but unpaid interest on the Notes will automatically, and without any declaration or other action on the part of the trustee or any holder of Notes, become immediately due and payable. A default in the payment of principal of or interest on the Notes or in our non-performance of any other obligation under the Notes or the Indenture will not constitute an event of default under the Indenture and will not give rise to any right of acceleration.

In cases specified in the Indenture, the holders of a majority in principal amount of the Notes may waive any default on behalf of all holders of the Notes, except a default in the payment of principal or interest or a default in the performance of a covenant or provision of the

Indenture which cannot be modified without the consent of each holder. We are required to file annually with the trustee a certificate as to whether or not we are in compliance with all the conditions and covenants applicable to us under the Indenture.

Within 90 days after the trustee’s knowledge of the occurrence of any default with respect to the Notes, the trustee shall transmit by mail to all holders of Notes, notice of such default unless such default shall have been cured or waived.

The holders of a majority of the aggregate outstanding principal amount of the Notes have the right to direct the time, method and place of conducting any proceeding for any remedy available to the trustee with respect to the Notes.

The defeasance, satisfaction and discharge provisions of the Indenture will apply to the Notes. You should refer to the description of these provisions under “Description of Debt Securities—Satisfaction and Discharge” and “—Legal Defeasance and Covenant Defeasance” in the accompanying prospectus.

The modification provisions of the Indenture will apply to the Notes. You should refer to the description of these provisions under “Description of Debt Securities—Modification of the Indentures” in the accompanying prospectus.

The Notes will not be entitled to voting rights, subject to any required consents described under “Description of Debt Securities—Modification of the Indentures” in the accompanying prospectus.

The Indenture governing the Notes and the Notes will be governed by and construed in accordance with the laws of the State of New York. The Indenture will be subject to the provisions of the Trust Indenture Act of 1939, as amended.

We intend to apply to list the Notes on the Nasdaq Global Select Market under the symbol “TCBIL.” If the application is approved, we expect trading on the Nasdaq Global Select Market to begin within 30 days of the original issue date of the Notes.

Upon issuance, the Notes will be represented by one or more fully registered global certificates, each of which we refer to as a global security. Each such global security will be deposited with, or on behalf of, The Depository Trust Company (“DTC”) and registered in the name of DTC or a nominee thereof. Initial settlement for the Notes will be made in same day funds. Secondary market trading between DTC participants will occur in the ordinary way in accordance with DTC’s rules. Unless and until it is exchanged in whole or in part for Notes in definitive form, no global security may be transferred except as a whole by DTC to a nominee of DTC or by a nominee of DTC to DTC or another nominee of DTC or by DTC or any such nominee to a successor of DTC or a nominee of such successor.

Beneficial interests in the Notes will be represented through book-entry accounts of financial institutions acting on behalf of beneficial owners as direct and indirect participants in DTC.

So long as DTC, or its nominee, is a registered owner of a Note, DTC or its nominee, as the case may be, will be considered the sole owner or holder of the Notes represented by such Note for all purposes under the Indenture. Except as provided below, the actual owners of the Notes represented by a Note (the “beneficial owner”) will not be entitled to have the Notes represented by such Note registered in their names, will not receive or be entitled to receive physical delivery of the Notes in definitive form and will not be considered the owners or holders thereof under the Indenture.

If DTC is at any time unwilling or unable to continue as depositary and a successor depositary is not appointed by us within 90 days, we will issue Notes in definitive form in exchange for the global notes. We will also issue Notes in definitive form in exchange for the global notes if an event of default has occurred with regard to the Notes represented by the global notes and has not been cured or waived. In addition, we may at any time and in our sole discretion determine not to have the Notes represented by the global notes and, in that event, will issue Notes in definitive form in exchange for the global notes. In any such instance, an owner of a beneficial interest in the global notes will be entitled to physical delivery in definitive form of Notes represented by the global notes equal in principal amount to such beneficial interest and to have such Notes registered in its name. Notes so issued in definitive form will be issued as registered Notes in denominations of $25.00 and integral multiples of $25.00 above that amount, unless otherwise specified by us. Notes in definitive form can be transferred by presentation for registration to the registrar at its New York offices and must be duly endorsed by the holder or his attorney duly authorized in writing, or accompanied by a written instrument or instruments of transfer in form satisfactory to us or the trustee duly executed by the holder or his attorney duly authorized in writing. We may require payment of a sum sufficient to cover any tax or other governmental charge that may be imposed in connection with any exchange or registration of transfer of Notes in definitive form.

Accordingly, each person owning a beneficial interest in a Note must rely on the procedures of DTC and, if such person is not a participant of DTC (a “participant”), on the procedures of the participant through which such person owns its interest, to exercise any rights of a holder under the Indenture. We understand that under existing industry practices, in the event that the Company requests any action of holders of the Notes or that an owner of a beneficial interest is entitled to give or take under the Indenture, DTC would authorize the participants holding the relevant beneficial interests to give or take such action, and such participants would authorize beneficial owners owning through such participants to give or take such action or would otherwise act upon the instructions of beneficial owners. Conveyance of notices and other

communications by DTC to participants, by participants to indirect participants, as defined below, and by participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

DTC will act as securities depositary for the Notes. Offered securities will be issued as fully registered securities registered in the name of Cede & Co. (DTC’s partnership nominee). One or more fully registered global securities will be issued for the Notes, and will be deposited with DTC.

DTC is a limited-purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code, and a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act. DTC holds securities that its participants deposit with DTC. DTC also facilitates the settlement among participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in participants’ accounts, thereby eliminating the need for physical movement of securities certificates. Direct participants of DTC (“direct participants”) include securities brokers and dealers, banks, trust companies, clearing corporations and certain other organizations. DTC is owned by a number of its direct participants and by the NYSE, the American Stock Exchange, Inc. and FINRA. Access to DTC’s system is also available to others such as securities brokers and dealers, banks and trust companies that clear through or maintain a custodial relationship with a direct participant, either directly or indirectly (“indirect participants”). The rules applicable to DTC and its participants are on file with the SEC.

Purchases of the Notes under DTC’s system must be made by or through direct participants, which will receive a credit for the Notes on DTC’s records. The ownership interest of each beneficial owner is in turn to be recorded on the records of direct participants and indirect participants. Beneficial owners will not receive written confirmation from DTC of their purchase, but beneficial owners are expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the direct participants or indirect participants through which such beneficial owner entered into the transaction. Transfers of ownership interests in the Notes are to be accomplished by entries made on the books of participants acting on behalf of beneficial owners. Beneficial owners will not receive certificates representing their ownership interests in the Notes, except in the limited circumstances that may be provided in the Indenture.

To facilitate subsequent transfers, all Notes deposited with DTC are registered in the name of DTC’s partnership nominee, Cede & Co. The deposit of the Notes with DTC and their registration in the name of Cede & Co. effect no change in beneficial ownership. DTC has no knowledge of the actual beneficial owners of the Notes. DTC’s records reflect only the identity of the direct participants to whose accounts such securities are credited, which may or may not be the beneficial owners. The participants will remain responsible for keeping account of their holdings on behalf of their customers.

Conveyance of notices and other communications by DTC to direct participants, by direct participants to indirect participants, and by direct participants and indirect participants to beneficial owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

Neither DTC nor Cede & Co. will consent or vote with respect to the Notes. Under its usual procedures, DTC mails an Omnibus Proxy to the Company as soon as possible after the applicable record date. The Omnibus Proxy assigns Cede & Co.’s consenting or voting rights to those direct participants to whose accounts securities are credited on the applicable record date (identified in a listing attached to the Omnibus Proxy).

Payments on the Notes will be made in immediately available funds to DTC. DTC’s practice is to credit direct participants’ accounts on the applicable payment date in accordance with their respective holdings shown on DTC’s records unless DTC has reason to believe that it will not receive payment on such date. Payments by participants to beneficial owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in “street name,” and will be the responsibility of such participant and not of DTC, the trustee under the Indenture or the Company, subject to any statutory or regulatory requirements as may be in effect from time to time. Any payment due to DTC on behalf of beneficial owners is the responsibility of the Company or the applicable agent, disbursement of such payments to direct participants shall be the responsibility of DTC, and disbursement of such payments to the beneficial owners shall be the responsibility of direct participants and indirect participants.

DTC may discontinue providing its services as securities depositary with respect to the Notes at any time by giving reasonable notice to the Company or the applicable agent. Under such circumstances, in the event that a successor securities depositary is not obtained, offered security certificates are required to be printed and delivered. The Company may decide to discontinue use of the system of book-entry transfers through DTC (or a successor securities depositary). In that event, offered security certificates will be printed and delivered.

U.S. Bank National Association is the trustee under the Indenture and will be the principal paying agent and registrar for the Notes. We have entered, and from time to time may continue to enter, into banking or other relationships with U.S. Bank National Association or its affiliates.

The trustee under the Indenture may resign or be removed with respect to one or more series of debt securities under the Indenture and a successor trustee may be appointed to act with respect to such series.

The following is a general discussion of the material U.S. federal income and, in the case of non-United States holders (as defined below), estate tax consequences of the purchase, ownership, and disposition of the Notes. This discussion is limited to Notes that are held as capital assets by investors that purchase the Notes upon original issuance at their initial offering price. This discussion is based upon the Internal Revenue Code of 1986, as amended (the “Code”), effective U.S. Treasury regulations, and judicial decisions and administrative interpretations thereof, all as of the date hereof and all of which are subject to change, possibly with retroactive effect. The foregoing are also subject to differing interpretations which could affect the tax consequences described herein. This discussion does not address all aspects of U.S. federal income and estate taxation that may be applicable to investors in light of their particular circumstances, or to investors subject to special treatment under U.S. federal income tax laws, such as persons subject to the alternative minimum tax, financial institutions, insurance companies, tax-exempt organizations, entities that are treated as partnerships for U.S. federal income tax purposes, dealers in securities or currencies, traders in securities that elect to use a mark-to-market method of accounting, United States holders (as defined below) whose functional currency is not the U.S. dollar, U.S. expatriates, persons deemed to sell Notes under the constructive sale provisions of the Code, and persons that hold Notes as part of a straddle, hedge, conversion transaction, or other integrated investment. Furthermore, this discussion does not address any U.S. federal gift tax laws or any state, local, or foreign tax laws.

For purposes of this discussion, a “United States holder” is a beneficial owner of a Note that is, for U.S federal income tax purposes:

For purposes of this discussion, a “non-United States holder” is a beneficial owner of a Note that is neither a partnership (or other entity that is treated as a partnership for U.S. federal income tax purposes) nor a “United States holder”, and “holders” refers to United States holders and non-United States holders.

If a partnership (or other entity treated as a partnership for U.S. federal income tax purposes) holds Notes, the tax treatment of a partner will generally depend on the status of the partner and the activities of the partnership. Partners of partnerships holding the Notes should consult their own tax advisors.

Persons considering the purchase of the Notes should consult their own tax advisors with respect to the U.S. federal income and estate tax considerations relating to the purchase, ownership and disposition of the Notes in light of their own particular circumstances, as well as the effect of any state, local, foreign and other tax laws.

Stated interest paid on a Note will be taxable to a United States holder as ordinary interest income at the time it accrues or is received in accordance with the United States holder’s method of accounting for U.S. federal income tax purposes.

Upon the sale, exchange, redemption or other disposition of a Note, a United States holder will generally recognize gain or loss equal to the difference between the amount realized (less any accrued interest, which will be taxable as ordinary income to the extent not previously included in income) on the sale, exchange, redemption or other disposition and such United States holder’s adjusted tax basis in the Note. A United States holder’s adjusted tax basis in a Note generally will be its initial purchase price. That gain or loss generally will be capital gain or loss and generally will be long-term capital gain or loss if the Note had been held for more than one year. A United States holder that is an individual is generally entitled to preferential treatment for net long-term capital gains. The ability of a United States holder to deduct capital losses is limited.

Beginning in 2013, certain United States holders that are individuals, estates or trusts will be subject to a 3.8% tax on all or a portion of their “net investment income,” which may include all or a portion of their interest income and net gains from the disposition of the Notes. Each United States holder that is an individual, estate or trust is urged to consult its tax advisors regarding the applicability of this Medicare tax to its income and gains in respect of its investment in the Notes.

Subject to the discussion below concerning backup withholding, the following is a discussion of U.S. federal income tax and withholding tax considerations generally applicable to non-United States holders:

(a) payments of principal and interest with respect to a Note held by or for a non-United States holder will not be subject to U.S. federal withholding tax, provided that, in the case of interest, (i) such non-United States holder does not own, actually or constructively, 10% or more of the total combined voting power of all classes of our stock entitled to vote, (ii) such non-United States holder is not a controlled foreign corporation, within the meaning of section 957(a) of the Code, that is related, directly or indirectly, to us through stock ownership, (iii) such non-United States holder is not engaged in a U.S. trade or business to which the interest is effectively connected and (iv) such non-United States holder complies with applicable certification requirements related to its non-U.S. status including, in general, furnishing to us an Internal Revenue Service (“IRS”) Form W-8BEN or other applicable Form W-8; and

(b) a non-United States holder will generally not be subject to U.S. federal income or withholding tax on gain realized on the sale, exchange, redemption or other disposition of a Note unless (i) that gain is effectively connected with such non-United States holder’s conduct of a trade or business in the United States (and, if an applicable income tax treaty so requires, is

attributable to a permanent establishment or fixed base maintained by such non-United States holder in the United States) or (ii) such non-United States holder is an individual who is present in the United States for 183 days or more in the taxable year of that disposition, and certain other conditions are met.

If a non-United States holder cannot satisfy the requirements described in paragraph (a) above, payments of interest generally will be subject to a 30% U.S. federal withholding tax, unless the non-United States holder provides a properly executed (i) IRS Form W-8BEN claiming an exemption from or reduction in withholding under the benefit of an applicable tax treaty or (ii) IRS Form W-8ECI stating that interest paid on the Note is not subject to withholding tax because it is effectively connected with such non-United States holder’s conduct of a trade or business in the United States.

If interest or gain on a Note is effectively connected with a non-United States holder’s conduct of a trade or business in the United States (and, if an applicable income tax treaty so requires, is attributable to a permanent establishment or fixed base maintained by such non-United States holder in the United States), such non-United States holder will generally be taxed on such amounts in the same manner as if it were a United States holder (see “United States Holders” above). In addition, a corporate non-United States holder may be subject to an additional branch profits tax at a rate of 30% (or a lower applicable treaty rate) on its effectively connected earnings and profits, subject to adjustments.

Notes owned by an individual non-United States holder who is neither a citizen nor a resident (as specially defined for U.S. federal estate tax purposes) of the United States at the time of death will not be subject to U.S. federal estate tax, provided that at the time of death (i) such individual non-United States holder does not own, actually or constructively, 10% or more of the total combined voting power of all classes of our stock entitled to vote and (ii) such individual non-United States holder is not engaged in a U.S. trade or business to which interest payments on the notes are effectively connected.

The Hiring Incentives to Restore Employment Act of 2010 (the “HIRE Act”) will, under certain circumstances, impose a withholding tax of 30% on payments of interest on the Notes to certain foreign entities on or after January 1, 2014, and payment of the gross proceeds from a disposition of the Notes to certain foreign entities on or after January 1, 2015, in each case unless various information reporting and due diligence requirements have been satisfied. The IRS has released proposed regulations that would exempt from this withholding tax any debt instruments that are outstanding on January 1, 2013. Therefore, under the proposed regulations, this withholding tax would not apply to the Notes. Prospective investors should consult their tax advisors regarding the possible implications of this legislation on their investment in the Notes.

Backup withholding and information reporting requirements generally apply to interest and principal payments made to, and to the proceeds of sales by, certain non-corporate United States holders. A United States holder not otherwise exempt from backup withholding

generally can avoid backup withholding by providing IRS Form W-9. In the case of a non-United States holder, backup withholding and information reporting will not apply to payments on, or proceeds from the sale, exchange, redemption or other disposition of, a Note if the statement referred to in clause (a)(iv) of the first paragraph under the heading “Non-United States Holders” has been received. Withholding agents must nevertheless report to the IRS and to each non-United States holder the amount of interest paid with respect to the Notes held by such non-United States holder and the rate of withholding (if any) applicable to such non-United States holder. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules will be allowed as a refund or a credit against the holder’s U.S. federal income tax liability, provided the required information is timely furnished to the IRS.

The following is a summary of certain considerations associated with the purchase of the Notes by (a) employee benefit plans that are subject to Title I of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), (b) plans, individual retirement accounts and other arrangements that are subject to Section 4975 of the Code, (c) entities whose underlying assets are considered to include “plan assets” of any employee benefit plan, plan, account or arrangement described in preceding clause (a) or (b), or (d) any governmental plan, church plan, non-U.S. plan or other investor whose purchase or holding of the Notes would be subject to provisions under any federal, state, local, non-U.S. or other laws or regulations that are similar to such provisions of ERISA or Section 4975 of the Code (being referred to collectively as “Similar Laws”), and entities whose underlying assets are considered to include “plan assets” of any such plan, account, or arrangement (each, a “Plan”).

ERISA and the Code impose certain duties on persons who are fiduciaries of a Plan subject to Part 4 of Title I of ERISA or Section 4975 of the Code (an “ERISA Plan”), and prohibit certain transactions involving the assets of an ERISA Plan and its fiduciaries or other interested parties. Under ERISA and the Code, any person who exercises any discretionary authority or control over the administration of such an ERISA Plan or the management or disposition of the assets of such an ERISA Plan, or who renders investment advice for a fee or other compensation to such an ERISA Plan, is generally considered to be a fiduciary of the ERISA plan.

In considering an investment in the Notes of a portion of the assets of any Plan, a fiduciary should determine whether the investment is in accordance with the documents and instruments governing the Plan and the applicable provisions of ERISA, the Code or any Similar Law relating to a fiduciary’s duties to the Plan including, without limitation, the prudence, diversification, delegation of control, and prohibited transaction provisions of ERISA or the Code or similar provisions under Similar Laws or other applicable law.

Section 406 of ERISA and Section 4975 of the Code prohibit ERISA Plans from engaging in specified transactions involving plan assets with persons or entities who are “parties in interest,” within the meaning of ERISA, or “disqualified persons,” within the meaning of Section 4975 of the Code, unless an exemption is available. A party in interest or disqualified person who engages in a non-exempt prohibited transaction may be subject to excise taxes and other penalties and liabilities under ERISA and the Code. In addition, the fiduciary of the ERISA Plan that engages in such a non-exempt prohibited transaction may be subject to penalties and liabilities under ERISA and the Code. Parties in interest or disqualified persons could include, without limitation, us, the underwriters, the trustee, the holders of our existing Notes issued under the Indenture, or any of our/their respective affiliates. For example, the acquisition and/or holding of Notes by an ERISA Plan with respect to which we are considered a party in interest or a disqualified person may constitute or result in a direct or indirect prohibited transaction under Section 406 of ERISA and/or Section 4975 of the Code, unless the investment is acquired and is held in accordance with an applicable statutory, class or individual prohibited transaction exemption. In this regard, the U.S. Department of Labor (the “DOL”) has issued prohibited transaction class exemptions (“PTCEs”) that may apply to the acquisition and holding of the Notes. These class exemptions include, without limitation, PTCE 84-14 relating to transactions determined by independent qualified professional asset managers, PTCE 90-1 relating to investments by insurance company pooled separate accounts, PTCE 91-38 relating to

investments by bank collective investment funds, PTCE 95-60 relating to investments by life insurance company general accounts and PTCE 96-23 relating to transactions determined by in-house asset managers, although there can be no assurance that all of the conditions of any such exemptions will be satisfied. In addition, Section 408(b)(17) of ERISA and Section 4975(d)(20) of the Code may provide a limited exemption for the purchase and holding of the Notes, and relief from the prohibited transaction provisions of ERISA and Section 4975 of the Code for certain transactions, provided that neither a party in interest or disqualified person nor any of their affiliates (directly or indirectly) has or exercises any discretionary authority or control or renders any investment advice with respect to the assets of any ERISA Plan involved in the transaction and provided further that the ERISA Plan pays no more, and receives no less, than adequate consideration in connection with the transaction (the so-called “service provider exemption”). These exemptions do not, however, provide relief from the provisions of ERISA and the Code that prohibit self-dealing and conflicts of interest by plan fiduciaries. There can be no assurance that all of the conditions of any such exemption will be satisfied.

Governmental plans, non-U.S. plans and certain church plans, while not subject to the prohibited transaction provisions of ERISA and Section 4975 of the Code, may nevertheless be subject to Similar Laws which may affect their investment in the Notes. Any fiduciary of such a governmental, non-U.S. or church plan considering an investment in the Notes should consult with its counsel before purchasing Notes to consider the applicable fiduciary standards and to determine the need for, and, if necessary, the availability of, any exemptive relief under such Similar Laws.

Because of the foregoing, the Notes should not be purchased or held by any person investing “plan assets” of any Plan, unless such purchase and holding will not constitute a non-exempt prohibited transaction under ERISA or Section 4975 of the Code or a violation of any applicable Similar Laws.

By acceptance of a Note (or any interest therein), each purchaser and subsequent transferee of a Note will be deemed to have represented and warranted that either (i) no portion of the assets used by such purchaser or transferee to acquire and hold the Notes constitutes assets of any Plan or (ii) the purchase and holding of the Notes by such purchaser or transferee will not constitute or result in a non-exempt prohibited transaction under Section 406 of ERISA or Section 4975 of the Code or a similar violation under any applicable Similar Laws.

The foregoing discussion is general in nature and is not intended to be all inclusive, and nor should it be construed as legal advice. Due to the complexity of these rules and the penalties that may be imposed upon persons involved in non-exempt prohibited transactions, it is particularly important that fiduciaries, or other persons considering purchasing the Notes on behalf of, or with the assets of, any Plan, consult with their counsel regarding the potential applicability of ERISA, Section 4975 of the Code and any Similar Laws to such investment and whether an exemption would be applicable to the purchase and holding of the Notes. Purchasers of the Notes have exclusive responsibility for ensuring that their purchase and holding of the Notes do not violate the fiduciary or prohibited transaction rules of ERISA, the Code or any Similar Laws. The sale of any Notes to a Plan is in no respect a representation by us or any of our affiliates or representatives that such investment meets all relevant legal requirements with respect to investments by any such Plan generally or any particular Plan, or that such investment is appropriate for such Plans generally or any particular Plan.

Under the terms and subject to the conditions in an underwriting agreement dated the date of this prospectus supplement, the underwriters named below, for whom Deutsche Bank Securities Inc., U.S. Bancorp Investments, Inc. and Macquarie Capital (USA) Inc. are acting as representatives, have severally agreed to purchase, and we have agreed to sell to them, severally, the amount of Notes indicated below:

The underwriting agreement provides that the several obligations of the underwriters to pay for and accept delivery of the Notes offered by this prospectus supplement are subject to the approval of certain legal matters by their counsel and to certain other conditions. The underwriters are obligated to take and pay for all of the Notes offered by this prospectus supplement if any such Notes are purchased under the underwriting agreement.

The underwriters propose to offer the Notes to the public at the offering price listed on the cover page of this prospectus supplement and may offer part through certain dealers at such price less a concession of $0.25 per Note, in respect of sales to institutional investors and $0.45 per Note, in respect of sales to retail investors. After the offering of the Notes is completed, the offering price and other selling terms may from time to time be varied by the underwriters.

We estimate that our total expenses for this offering will be approximately $120,000, excluding underwriting discounts and commissions.

We have granted the underwriters an option to purchase additional Notes in an aggregate principal amount of up to $15,000,000, at the public offering price, less the underwriting discounts and commissions set forth on the cover page of this prospectus supplement, to cover over-allotments, if any. This option is exercisable for a period of 30 days. If the underwriters exercise their over-allotment option, the underwriters have severally agreed, subject to conditions, to purchase from us Notes in approximately the same proportion as set forth in the table above.

The Notes are a new issue of securities with no established trading market. We intend to apply to list the Notes on the Nasdaq Global Select Market under the symbol “TCBIL.” If the application is approved, we expect trading of the Notes on the Nasdaq Global Select Market to commence within 30 days of the original issue date of the Notes. The underwriters have advised us that they presently intend to make a market for the Notes as permitted by applicable laws and regulations, but they have no obligation to do so and may discontinue market making at any time without providing any notice. No assurance can be given as to the liquidity of any trading market for the Notes. If an active public trading market for the Notes does not develop, the market price and liquidity of the Notes may be adversely affected.

In connection with the offering, the underwriters are permitted to engage in transactions that stabilize the market price of the Notes. Such transactions consist of bids or purchases to peg, fix or maintain the price of the Notes or the exercise of the over-allotment option. If the

underwriters create a short position in the Notes in connection with the offering, i.e., if they sell more Notes than are on the cover page of this prospectus supplement and in excess of the over-allotment option, the underwriters may reduce that short position by purchasing Notes in the open market. Purchases of a security to stabilize the price or to reduce a short position could cause the price of the security to be higher than it might be in the absence of such purchases.

The underwriters may also impose a penalty bid. Penalty bids permit the underwriters to reclaim a selling concession from a syndicate member when the underwriters, in covering short positions or making stabilizing purchases, repurchase notes originally sold by the syndicate member.

Neither we nor any of the underwriters makes any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of the Notes. In addition, neither we nor any of the underwriters makes any representation that the underwriters will engage in these transactions or that these transactions, once commenced, will not be discontinued without notice.

Any of these activities may cause the price of the Notes to be higher than the price that otherwise would exist in the absence of such activities. These activities, if commenced, may be discontinued at any time.

The underwriters have in the past provided, and may in the future provide, investment banking, commercial banking and other services to us and our affiliates in the ordinary course of business, for which they have received, or may receive, compensation for such services. The trustee for the Notes is an affiliate of U.S. Bancorp Investments, Inc., an underwriter of this offering.

We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended, or to contribute to payments the underwriters may be required to make in respect of any of those liabilities.

In relation to each Member State of the European Economic Area which has implemented the Prospectus Directive (each, a Relevant Member State), each underwriter has represented and agreed that with effect from and including the date on which the Prospectus Directive is implemented in that Relevant Member State (the Relevant Implementation Date) it has not made and will not make an offer of Notes which are the subject of the offering contemplated by this prospectus supplement to the public in that Relevant Member State other than:

For the purposes of this provision, the expression an offer of Notes to the public in relation to any Notes in any Relevant Member State means the communication in any form and by any

means of sufficient information on the terms of the offer and the Notes to be offered so as to enable an investor to decide to purchase or subscribe the Notes, as the same may be varied in that Member State by any measure implementing the Prospectus Directive in that Member State, the expression Prospectus Directive means Directive 2003/71/EC (and amendments thereto, including the 2010PD Amending Directive), and includes any relevant implementing measure in the Relevant Member State and the expression 2010PD Amending Directive means Directive 2010/73/EU.

This prospectus supplement and the accompanying prospectus are only being distributed to, and are only directed at, persons in the United Kingdom that are qualified investors within the meaning of Article 2(1)(e) of the Prospectus Directive that are also (i) investment professionals falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (the “Order”) or (ii) high net worth entities, and other persons to whom it may lawfully be communicated, falling within Article 49(2)(a) to (d) of the Order (each such person being referred to as a “relevant person”). This prospectus supplement and the accompanying prospectus and their contents are confidential and should not be distributed, published or reproduced (in whole or in part) or disclosed by recipients to any other person in the United Kingdom. Any person in the United Kingdom that is not a relevant persons should not act or rely on this document or any of its contents.

The validity of the Notes offered hereby will be passed upon for us by Winstead PC. The validity of the securities offered hereby will be passed upon for the underwriters by Simpson Thacher & Bartlett LLP.

The consolidated financial statements of TCBI appearing in TCBI’s Annual Report (Form 10-K) for the year ended December 31, 2011 and the effectiveness of TCBI’s internal control over financial reporting as of December 31, 2011 have been audited by Ernst & Young LLP, independent registered public accounting firm, as set forth in their reports thereon included therein, and incorporated herein by reference. Such consolidated financial statements are incorporated herein by reference in reliance upon such reports given on the authority of such firm as experts in accounting and auditing.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public over the Internet at the SEC’s website at http://www.sec.gov. Copies of certain information filed by us with the SEC are also available on our website at http://www.texascapitalbank.com. Our website is not a part of this prospectus. You may also read and copy any document we file at the SEC’s public reference room, 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference room.

The SEC allows us to “incorporate by reference” information we file with it, which means that we can disclose important information to you by referring you to other documents. The information incorporated by reference is considered to be a part of this prospectus, and information that we file later with the SEC will automatically update and supersede this information. In all cases, you should rely on the later information over different information included in this prospectus.

We incorporate by reference the documents listed below and all future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, prior to the termination of the offering, except to the extent that any information contained in such filings is deemed “furnished” in accordance with SEC rules, including, but not limited to, information furnished under Items 2.02 and 7.01 of any Current Report on Form 8-K including related exhibits:

cost to the requestor upon written or telephonic request addressed to Texas Capital Bancshares, Inc., 2000 McKinney Avenue, Suite 700, Dallas, Texas 75201, Attention: Myrna Vance (telephone: 214-932-6600).

You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized anyone else to provide you with additional or different information.

Texas Capital Bancshares, Inc. may offer and sell, from time to time, in one or more offerings, senior debt securities, subordinated debt securities, convertible debt securities, preferred stock, common stock, warrants or units. This prospectus provides a general description of the securities we may offer and the manner in which we will offer these securities. Supplements to this prospectus will describe the specific terms and manner of offering of the securities we actually offer. The prospectus supplement may also add, update, or change information contained in this prospectus. You should read this prospectus and any prospectus supplement carefully before you invest. This prospectus may not be used to sell securities, unless it is accompanied by a prospectus supplement that describes those securities.

We may offer these securities from time to time in amounts, prices, and on other terms to be determined at the time of the offering. We may sell these securities to or through underwriters, to other purchasers or through agents. The accompanying prospectus supplement will specify the names of any underwriters or agents.

Our common stock is traded on the Nasdaq Global Select Market under the symbol “TCBI.” You are urged to obtain current market prices for our common stock.

Our principal executive offices are located at 2000 McKinney Avenue, Suite 700, Dallas, Texas 75201 and our telephone number is (214) 932-6600. Our Internet address is http://www.texascapitalbank.com.

These securities are speculative and involve a high degree of risk. You should carefully read this prospectus, any applicable prospectus supplement, our periodic reports and other information we file with the U.S. Securities and Exchange Commission and any information under the heading “Risk Factors” beginning on page 3 of this prospectus before making a decision to purchase our securities.

Neither the U.S. Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

These securities are our unsecured obligations, are not savings accounts, deposits or other obligations of any bank and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency.

This prospectus is part of a registration statement we filed with the Securities and Exchange Commission, or the SEC, using a “shelf” registration process. Under this shelf registration process, after the SEC declares our registration statement effective, we may from time to time sell any combination of the securities described in this prospectus in one or more offerings up to a total dollar amount of $250,000,000.

This prospectus provides you with a general description of each of the securities we may offer. Each time we sell securities we will provide a prospectus supplement containing specific information about the terms of the securities being offered. That prospectus supplement may include a discussion of any risk factors or other special considerations that apply to those securities. The prospectus supplement may also add, update, or change the information in this prospectus. If there is any inconsistency between the information in this prospectus and any prospectus supplement, you should rely on the information in that prospectus supplement. You should read both this prospectus and any prospectus supplement together with additional information described under the heading “Where You Can Find More Information.”

The registration statement containing this prospectus, including the exhibits to the registration statement, provides additional information about us and the securities offered under this prospectus. The registration statement, including the exhibits and the documents incorporated herein by reference, can be read on the SEC website or at the SEC offices mentioned under the heading “Where You Can Find More Information.”

You should rely only on the information we incorporate by reference or present in this prospectus or the relevant prospectus supplement. We have not authorized anyone else, including any underwriter or agent, to provide you with different or additional information. We may only use this prospectus to sell securities if it is accompanied by a prospectus supplement which includes the specific terms of that offering. We are only offering these securities in States where the offer is permitted. You should not assume that the information in this prospectus or the applicable prospectus supplement is accurate as of any date other than the dates on the front of those documents.

We may sell securities to underwriters who will sell the securities to the public on terms fixed at the time of sale. In addition, the securities may be sold by us directly or through dealers or agents designated from time to time. If we, directly or through agents, solicit offers to purchase the securities, we reserve the sole right to accept and, together with our agents, to reject, in whole or in part, any of those offers.

The prospectus supplement will contain the names of the underwriters, dealers, or agents, if any, together with the terms of the offering, the compensation of those underwriters, dealers, or agents, and the net proceeds to us. Any underwriters, dealers, or agents participating in the offering may be deemed “underwriters” within the meaning of the Securities Act of 1933, as amended.

In this prospectus, “TCBI,” “we,” “our,” “ours,” and “us” refer to Texas Capital Bancshares, Inc., which is a financial holding company headquartered in Dallas, Texas, and its subsidiaries on a consolidated basis, unless the context otherwise requires. References to “Texas Capital Bank” mean Texas Capital Bank, National Association, which is our principal banking subsidiary.

This prospectus and the documents incorporated by reference contain statements that are considered “forward looking statements” within the meaning of United States securities laws. In addition, TCBI and its management may make other written or oral communications from time to time that contain forward-looking statements. Forward-looking statements, including statements about industry trends, management’s future expectations and other matters that do not relate strictly to historical facts, are based on assumptions by management, and are often identified by such forward-looking terminology as “expect,” “look,” “believe,” “anticipate,” “estimate,” “seek,” “may,” “will,” “trend,” “target,” and “goal” or similar statements or variations of such terms. Forward-looking statements may include, among other things, statements about TCBI’s confidence in its strategies and its expectations about financial performance, market growth, market and regulatory trends and developments, acquisitions and divestitures, new technologies, services and opportunities and earnings.

Forward-looking statements are subject to various risks and uncertainties, which change over time, are based on management’s expectations and assumptions at the time the statements are made, and are not guarantees of future results. Management’s expectations and assumptions, and the continued validity of the forward-looking statements, are subject to change due to a broad range of factors affecting the national and global economies, the equity, debt, currency and other financial markets, as well as factors specific to TCBI and its subsidiaries, including Texas Capital Bank.

Actual outcomes and results may differ materially from what is expressed in our forward-looking statements and from our historical financial results due to the factors discussed elsewhere in this prospectus or disclosed in our other SEC filings. Forward-looking statements included herein should not be relied upon as representing our expectations or beliefs as of any date subsequent to the date of this prospectus. TCBI undertakes no obligation to revise the forward-looking statements contained in this prospectus to reflect events after the date of this prospectus. The factors discussed herein are not intended to be a complete summary of all risks and uncertainties that may affect our businesses. Though we strive to monitor and mitigate risk, we cannot anticipate all potential economic, operational and financial developments that may adversely impact our operations and our financial results.

Forward-looking statements should not be viewed as predictions, and should not be the primary basis upon which investors evaluate TCBI. Any investor in TCBI should consider all risks and uncertainties disclosed in our SEC filings described below under the heading “Where You Can Find More Information,” all of which are accessible on the SEC’s website at http://www.sec.gov.

Texas Capital Bancshares, Inc., a financial holding company, is the parent of Texas Capital Bank, National Association, a Texas-based bank headquartered in Dallas, with our primary banking offices in Dallas, Houston, Fort Worth, Austin and San Antonio, the state’s five largest metropolitan areas. All of our business activities are conducted through our bank subsidiary. Our market focus is commercial businesses and successful professionals and entrepreneurs, and we offer a variety of banking products and services to our customers. We have focused on organic growth, maintenance of credit quality and bankers with strong personal and professional relationships in their communities.

We focus on serving the needs of commercial businesses and successful professionals and entrepreneurs, the core of our model since our organization in March 1998. We do not incur the costs of competing in an over-branched and over-crowded consumer market. We are primarily a secured lender in Texas, and, as a result, we have experienced a low percentage of charge-offs relative to both total loans and non-performing loans since inception. Our loan portfolio is diversified by industry, collateral and geography in Texas.

An investment in our securities involves significant risks. You should carefully consider the risks and uncertainties and the risk factors set forth in the documents and reports filed with the SEC that are incorporated by reference into this prospectus, as well as any risks described in any applicable prospectus supplement, as the same may be updated from time to time by our future filings with the SEC under the Securities Exchange Act of 1934, as amended, before you make an investment decision regarding the securities. Additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business operations. Statements in or portions of a future document incorporated by reference in this prospectus, including without limitation those relating to risk factors, may update and supersede statements in and portions of this prospectus or such incorporated documents.

Unless otherwise specified in a prospectus supplement accompanying this prospectus, we expect to use the net proceeds from the sale of our securities for general corporate purposes.

We will specify the principal purposes for which the net proceeds from the sale of our securities will be used in a prospectus supplement at the time of sale. Until we use the net proceeds from the sale of the securities for these purposes, we may place the net proceeds in temporary investments or we may hold the net proceeds in deposit accounts in our subsidiary bank.

The following table sets forth our consolidated ratio of earnings to fixed charges for all of the periods shown below. For purposes of computing these ratios, earnings represent the sum of income from continuing operations before taxes plus fixed charges. Fixed charges represent total interest expense, including and excluding interest on deposits. We paid dividends on preferred stock only during 2009. In the other periods presented below our ratio of earnings to combined fixed charges and preference dividends for those periods is identical to the ratio of earnings to fixed charges. On January 16, 2009, we completed the issuance of $75 million of perpetual preferred stock and related warrants under the U.S. Department of Treasury’s voluntary Capital Purchase Program. We repurchased the preferred stock in May 2009. The $3.9 million accelerated deemed dividend in connection with the repurchase, combined with the preferred dividend of $523,000 for the second quarter of 2009 and the preferred dividend of $930,000 paid in the first quarter of 2009, resulted in a total dividend and reduction of earnings available to common stockholders of $5.4 million for the year ended December 31, 2009.

In accordance with our adoption of Accounting Standards Update 2011-12 effective in the first quarter of 2012 and the subsequent filing of this registration statement, we have included the below table showing our historical annual financial statements in the newly adopted format. Our other comprehensive income (“OCI”) includes only the change in unrealized gain (loss) on available-for-sale securities and the amounts for 2011 and 2010 are immaterial decreases which resulted from the continued decrease in our securities portfolio. The 2009 amount was a gain of $4.2 million and was the result of the decrease in market interest rates, driving an increase in the fair value of our securities. We did not purchase any new securities in 2009, 2010, or 2011.

The descriptions of the securities contained in this prospectus, together with the applicable prospectus supplement, summarize all the material terms and provisions of the various types of securities that we may offer. The particular terms of the securities offered by any prospectus supplement will be described in that prospectus supplement. If indicated in an applicable prospectus supplement, the terms of the securities may differ from the terms summarized below. An applicable prospectus supplement will also contain information, where applicable, about material U.S. federal income tax considerations relating to the securities, and the securities exchange, if any, on which the securities will be listed.

If we issue securities at a discount from their original stated principal or liquidation amount, then, for purposes of calculating the total dollar amount of all securities issued under this prospectus, we will treat the initial offering price of the securities as the total original principal or liquidation amount of the securities.

This prospectus may not be used to sell securities, unless it is accompanied by a prospectus supplement.

This section describes the general terms and provisions of the debt securities that we may issue. The applicable prospectus supplement will describe the specific terms of the debt securities offered through that prospectus supplement as well as any general terms described in this section that will not apply to those debt securities.

Any debt securities issued using this prospectus, or “Debt Securities,” will be our direct unsecured general obligations. The Debt Securities will be either our senior debt securities, or “Senior Debt Securities,” or our subordinated debt securities, or “Subordinated Debt Securities.” The Senior Debt Securities and the Subordinated Debt Securities will be issued under separate Indentures between us and a trustee chosen by us and qualified to act as a trustee under the Trust Indenture Act of 1939, or the “Trustee.” Senior Debt Securities will be issued under a “Senior Indenture” and Subordinated Debt Securities will be issued under a “Subordinated Indenture.” Together, the Senior Indenture and the Subordinated Indenture are called “Indentures.”

Because we are a holding company, our cash flows and consequent ability to service our obligations, including our debt securities, are dependent on distributions and other payments of earnings and other funds by our subsidiaries to us. The payment of dividends and other distributions by our subsidiaries is contingent upon their earnings and is subject to the requirements of federal banking regulations and other restrictions. In addition, the debt securities will be structurally subordinated to all indebtedness and other liabilities of our subsidiaries, since any right we have to receive any assets of our subsidiaries will be effectively subordinated to the claims of that subsidiary’s creditors. If we are recognized as a creditor of that subsidiary, our claims would still be subordinate to any security interest in the assets of that subsidiary and any indebtedness of that subsidiary senior to us. Claims from creditors (other than us), on subsidiaries may include long-term and medium-term debt and

substantial obligations related to deposit liabilities, federal funds purchased, securities sold under repurchase agreements and other short-term borrowings. Any capital loans that we make to Texas Capital Bank would be subordinate in right of payment to deposits and to other indebtedness of Texas Capital Bank.

We have summarized selected provisions of the Indentures below. The summary is not complete. The form of each Indenture has been filed with the SEC as referenced in the list of exhibits to the registration statement of which this prospectus is a part, and you should read the Indentures for provisions that may be important to you. Your rights are defined by the terms of the Indentures, not the summary provided in this prospectus or a prospectus supplement. In the summary below we have included references to article or section numbers of the applicable Indenture so that you can easily locate these provisions. Whenever we refer in this prospectus or in the prospectus supplement to particular articles or sections or defined terms of the Indentures, those articles or sections or defined terms are incorporated by reference herein or therein, as applicable. Capitalized terms used in the summary have the meanings specified in the Indentures.

The Indentures provide that Debt Securities in separate series may be issued thereunder from time to time without limitation as to aggregate principal amount. We may specify a maximum aggregate principal amount for the Debt Securities of any series (Section 2.05). We will determine the terms and conditions of the Debt Securities, including the maturity, principal and interest, but those terms must be consistent with the Indenture.

The Senior Debt Securities will rank equally with all of our other senior unsecured and unsubordinated debt (“Senior Debt”). The Subordinated Debt Securities will be subordinated in right of payment to the prior payment in full of all of our Senior Debt as described under “— Subordination of Subordinated Debt Securities” and in the prospectus supplement applicable to any Subordinated Debt Securities.

The applicable prospectus supplement will set forth the price or prices at which the Debt Securities to be offered will be issued and will describe the following terms of such Debt Securities:

The Indentures do not limit the amount of Debt Securities that may be issued. Each Indenture allows Debt Securities to be issued up to the principal amount that may be authorized by us and may be in any currency or currency unit designated by us.

Debt Securities, including Original Issue Discount Securities bearing no interest or bearing interest which at the time of issuance is below market rate, may be sold at a substantial discount below their principal amount. Special United States federal income tax considerations applicable to Debt Securities sold at an original issue discount may be described in the applicable prospectus supplement. In addition, special United States federal income tax or other considerations applicable to any Debt Securities that are denominated in a currency or currency unit other than United States dollars may be described in the applicable prospectus supplement.

The Senior Debt Securities will be our unsecured senior obligations and will rank equally with all other senior unsecured and unsubordinated debt. The Senior Debt Securities will, however, be subordinated in right of payment to all our secured indebtedness to the extent of the value of the assets securing such indebtedness whether existing at the date of the Senior Indenture or subsequently incurred. Except as provided in the applicable Senior Indenture or specified in any authorizing resolution or supplemental indenture relating to a series of Senior Debt Securities to be issued, the Senior Indenture will not limit the amount of additional indebtedness that may rank equally with the Senior Debt Securities or the amount of indebtedness, secured or otherwise, that may be incurred or preferred stock that may be issued by any of our subsidiaries.

The indebtedness evidenced by the Subordinated Debt Securities will, to the extent set forth in the Subordinated Indenture with respect to each series of Subordinated Debt Securities, be subordinate in right of payment to the prior payment in full of all of our secured indebtedness and Senior Debt, including the Senior Debt Securities, whether existing at the date of the Senior Indenture or subsequently incurred (Article XIII of the Subordinated Indenture). The prospectus supplement relating to any Subordinated Debt Securities will summarize the subordination provisions of the Subordinated Indenture applicable to that series including:

The prospectus supplement will also describe as of a recent date the approximate amount of Senior Debt to which the Subordinated Debt Securities of that series will be subordinated.

The failure to make any payment on any of the Subordinated Debt Securities by reason of the subordination provisions of the Subordinated Indenture described in the prospectus supplement will not be construed as preventing the occurrence of an Event of Default with respect to the Subordinated Debt Securities arising from any such failure to make payment.

The subordination provisions described above will not be applicable to payments in respect of the Subordinated Debt Securities from a defeasance trust established in connection with any legal defeasance or covenant defeasance of the Subordinated Debt Securities as described under “— Legal Defeasance and Covenant Defeasance.”

If stated in the applicable prospectus supplement, the Subordinated Debt Securities covered by that prospectus supplement will be intended to qualify as Tier 2 Capital under the guidelines established by the Board of Governors of the Federal Reserve System, or the Federal Reserve, for bank holding companies. The guidelines set forth specific criteria for Subordinated Debt Securities to qualify as Tier 2 Capital. Among other things that Subordinated Debt Securities must:

The Debt Securities may be converted into other securities of our company, if at all, according to the terms and conditions of an applicable prospectus supplement. Such terms will include the conversion price, the conversion period, whether conversion will be at the option of the holders of such series of Debt Securities or at the option of our company, the events requiring an adjustment of the conversion price and provisions affecting conversion in the event of the redemption of such series of Debt Securities.

The Debt Securities of each series will be issuable, unless otherwise specified in the applicable prospectus supplement, only in denominations of $1,000 and integral multiples thereof (Section 2.08).

Registered securities of any series that are not Global Securities will be exchangeable for other registered securities of the same series and of like aggregate principal amount and tenor in different authorized denominations. In addition, if debt securities of any series are issuable as both registered securities and bearer securities, the holder may choose, upon written request, and subject to the terms of the applicable indenture, to exchange bearer securities and the appropriate related coupons of that series into registered securities of the same series of any authorized denominations and of like aggregate principal amount and tenor. Bearer securities with attached coupons surrendered in exchange for registered securities between a regular record date or a special record date and the relevant date for interest payment shall be surrendered without the coupon relating to the interest payment date. Interest will not be payable with respect to the registered security issued in exchange for that bearer security. That interest will be payable only to the holder of the coupon when due in accordance with the terms of the indenture. Bearer securities will not be issued in exchange for registered securities.

You may present registered securities for registration of transfer, together with a duly executed form of transfer, at the office of the security registrar or at the office of any transfer agent designated by us for that purpose with respect to any series of Debt Securities and referred to in the applicable prospectus supplement. This may be done without service charge but upon payment of any taxes and other governmental charges as described in the applicable indenture. The security registrar or the transfer agent will effect the transfer or exchange upon being satisfied with the documents of title and identity of the person making the request. We will appoint the Trustee as security registrar for each Indenture. If a prospectus supplement refers to any transfer agents initially designated by us with respect to any series of debt securities in addition to the security registrar, we may at any time rescind the designation of any of those transfer agents or approve a change in the location through which any of those transfer agents acts. If, however, debt securities of a series are issuable solely as registered securities, we will be required to maintain a transfer agent in each place of payment for that series, and if debt securities of a series are issuable as bearer securities, we will be required to maintain a transfer agent in a place of payment for that series located outside of the United States in addition to the security registrar. We may at any time designate additional transfer agents with respect to any series of debt securities. The Debt Security Registrar and any other transfer agent initially designated by us for any Debt Securities will be named in the applicable prospectus supplement (Section 2.06). We may at any time designate additional transfer agents or rescind the designation of any transfer agent or approve a change in the office through which any transfer agent acts, except that we will be required to maintain a transfer agent in each Place of Payment for the Debt Securities of each series (Section 4.02).

If the Debt Securities of any series (or of any series and specified tenor) are to be redeemed in part, we will not be required to (1) issue, register the transfer of or exchange any Debt Security of that series (or of that series and specified tenor, as the case may be) during a period beginning at the opening of business 15 days before the day of mailing of a notice of redemption of any such Debt Security that may be selected for redemption and ending at the close of business on the day of such mailing or (2) register the transfer of or exchange any Debt Security so selected for redemption, in whole or in part, except the unredeemed portion of any such Debt Security being redeemed in part (Section 2.09).

Some or all of the Debt Securities of any series may be represented, in whole or in part, by one or more Global Securities that will have an aggregate principal amount equal to that of the Debt Securities they represent. Each Global Security will be registered in the name of a Depositary or its nominee identified in the applicable prospectus supplement, will be deposited with such Depositary or nominee or its custodian and will bear a legend regarding the restrictions on exchanges and registration of transfer thereof referred to below and any such other matters as may be provided for pursuant to the applicable Indenture. Global Securities may be issued in either registered or bearer form and in either temporary or permanent form.

Notwithstanding any provision of the Indentures or any Debt Security described in this prospectus, no Global Security, unless its terms so expressly permit, may be exchanged in whole or in part for Debt Securities registered, and no transfer of a Global Security in whole or in part may be registered, in the name of any person other than the Depositary for such Global Security or any nominee of such Depositary unless:

(1) the Depositary has notified us that it is unwilling or unable to continue as Depositary for such Global Security or has ceased to be qualified to act as such as required by the applicable Indenture, and in either case we fail to appoint a successor Depositary within 90 days;

(2) an Event of Default with respect to the Debt Securities represented by such Global Security has occurred and is continuing and the Trustee has received a written request from the Depositary to issue certificated Debt Securities; or

(3) other circumstances exist, in addition to or in lieu of those described above, as may be described in the applicable prospectus supplement.

All Debt Securities issued in exchange for a Global Security or any portion thereof will be registered in such names as the Depositary may direct (Section 2.17).

As long as the Depositary, or its nominee, is the registered holder of a Global Security, the Depositary or such nominee, as the case may be, will be considered the sole owner and Holder of such Global Security and the Debt Securities that it represents for all purposes under the Debt Securities and the applicable Indenture (Section 2.17). Except in the limited circumstances referred to above, owners of beneficial interests in a Global Security will not be entitled to have such Global Security or any Debt Securities that it represents registered in their names, will not receive or be entitled to receive physical delivery of certificated Debt Securities in exchange for those interests and will not be considered to be the owners or Holders of such Global Security or any Debt Securities that it represents for any purpose under the Debt Securities or the applicable Indenture. All payments on a Global Security will be made to the Depositary or its nominee, as the case may be, as the Holder of the security. The laws of some jurisdictions require that some purchasers of Debt Securities take physical delivery of such Debt Securities in definitive form. These laws may impair the ability to transfer beneficial interests in a Global Security.

Ownership of beneficial interests in a Global Security will be limited to institutions that have accounts with the Depositary or its nominee (“participants”) and to persons that may hold beneficial interests through participants. In connection with the issuance of any Global Security, the Depositary will credit, on its book-entry registration and transfer system, the respective principal amounts of Debt Securities represented by the Global Security to the accounts of its participants. Ownership of beneficial interests in a Global Security will be shown only on, and the transfer of those ownership interests will be effected only through, records maintained by the Depositary (with respect to participants’ interests) or any such participant (with respect to interests of persons held by such participants on their behalf). Payments, transfers, exchanges and other matters relating to beneficial interests in a Global Security may be subject to various policies and procedures adopted by the Depositary from time to time. None of us, any Trustee or any agent of ours will have any responsibility or liability for any aspect of the Depositary’s or any participant’s records relating to, or for payments made on account of, beneficial interests in a Global Security, or for maintaining, supervising or reviewing any records relating to such beneficial interests.

Unless otherwise indicated in the applicable prospectus supplement, payment of interest on a Debt Security on any Interest payment date will be made to the Person in whose name such Debt Security (or one or more Predecessor Debt Securities) is registered at the close of business on the regular record date for such interest (Section 2.14).

Unless otherwise indicated in the applicable prospectus supplement, principal of and any premium and interest on the Debt Securities of a particular series will be payable at the office of such Paying Agent or Paying Agents as we may designate for such purpose from time to time, except that at our option payment of any interest on Debt Securities in certificated form may be made by check mailed to the address of the Person entitled thereto as such address appears in the Security Register. Unless otherwise indicated in the applicable prospectus supplement, the corporate trust office of the Trustee under the Senior Indenture in The City of New York will be designated as sole Paying Agent for payments with respect to Senior Debt Securities of each series, and the corporate trust office of the Trustee under the Subordinated Indenture in The City of New York will be designated as the sole Paying Agent for payment with respect to Subordinated Debt Securities of each series. Any other Paying Agents initially designated by us for the Debt Securities of a particular series will be named in the applicable prospectus supplement. We may at any time designate additional Paying Agents or rescind the designation of any Paying Agent or approve a change in the office through which any Paying Agent acts, except that we will be required to maintain a Paying Agent in each Place of Payment for the Debt Securities of a particular series (Section 4.02).

Subject to any applicable abandoned property law, all money paid by us to a Paying Agent for the payment of the principal of or any premium or interest on any Debt Security which remain unclaimed at the end of two years after such principal, premium or interest has become due and payable will be repaid to us, and the Holder of such Debt Security thereafter may look only to us for payment (Section 11.05).

We may not consolidate with or merge into, or transfer, lease or otherwise dispose of all or substantially all of our assets to, any Person (a “successor Person”), and may not permit any Person to consolidate with or merge into us, unless:

(1) the successor Person (if any) is a corporation and validly existing under the laws of any domestic jurisdiction and assumes our obligations on the Debt Securities and under the Indentures;

(2) immediately before and after giving effect to the transaction, no Event of Default, and no event which, after notice or lapse of time or both, would become an Event of Default, has occurred and is continuing; and

(3) several other conditions, including any additional conditions with respect to any particular Debt Securities specified in the applicable prospectus supplement, are met (Section 10.01).

Unless otherwise specified in the prospectus supplement, each of the following will constitute an Event of Default under the applicable Indenture with respect to Debt Securities of any series:

(1) failure to pay principal of or premium on any Debt Security of that series when due, whether or not, in the case of Subordinated Debt Securities, such payment is prohibited by the subordination provisions of the Subordinated Indenture;

(2) failure to pay any interest on any Debt Securities of that series when due, continued for 30 days, whether or not, in the case of Subordinated Debt Securities, such payment is prohibited by the subordination provisions of the Subordinated Indenture;

(3) failure to deposit any sinking fund payment, when due, in respect of any Debt Security of that series, whether or not, in the case of Subordinated Debt Securities, such deposit is prohibited by the subordination provisions of the Subordinated Indenture;

(4) failure to perform or comply with the provisions described under “— Consolidation, Merger and Sale of Assets”;

(5) failure to perform any of our other covenants in such Indenture (other than a covenant included in such Indenture solely for the benefit of a series other than that series), continued for 90 days after written notice has been given, as provided in such Indenture;

(6) any judgment or decree for the payment of money in excess of an amount to be determined at the time the series of Debt Securities are created is entered against us or any Restricted Subsidiary remains outstanding for a period of 60 consecutive days following entry of such judgment and is not discharged, waived or stayed; and

(7) certain events of bankruptcy, insolvency or reorganization affecting us or any Restricted Subsidiary. (Section 6.01).

Except as may be summarized in a prospectus supplement and set forth in a supplemental indenture or the board resolution creating a series of Debt Securities, if an Event of Default (other than an Event of Default with respect to TCBI described in clause (7) above) with respect to the Debt Securities of any series at the time Outstanding occurs and is continuing, either the applicable Trustee or the Holders of at least 25% in principal amount of the Outstanding Debt Securities of that series by notice as provided in the Indenture may declare the principal amount of the Debt Securities of that series (or, in the case of any Debt Security that is an Original Issue Discount Debt Security, such portion of the principal amount of such Debt Security as may be specified in the terms of such Debt Security) to be due and payable immediately. If an Event of Default with respect to TCBI described in clause (7) above with respect to the Debt Securities of any series at the time Outstanding occurs, the principal amount of all the Debt Securities of that series (or, in the case of any such Original Issue Discount Security, such specified amount) will automatically, and without any action by the applicable Trustee or any

Holder, become immediately due and payable. After any such acceleration, but before a judgment or decree based on acceleration, the Holders of a majority in principal amount of the Outstanding Debt Securities of that series may, under certain circumstances, rescind and annul such acceleration if all Events of Default, other than the non-payment of accelerated principal (or other specified amount), have been cured or waived as provided in the applicable Indenture (Section 6.01). For information as to waiver of defaults, see “— Modification and Waiver” below.

Subject to the provisions of the Indentures relating to the duties of the Trustees in case an Event of Default has occurred and is continuing, the Trustee will be under no obligation to exercise any of its rights or powers under the applicable Indenture at the request or direction of any of the Holders, unless such Holders have offered to such Trustee reasonable indemnity (Section 6.04). Subject to such provisions for the indemnification of the Trustees, the Holders of a majority in principal amount of the Outstanding Debt Securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or exercising any trust or power conferred on the Trustee with respect to the Debt Securities of that series (Section 6.06).

No Holder of a Debt Security of any series will have any right to institute any proceeding with respect to the applicable Indenture, or for the appointment of a receiver or a trustee, or for any other remedy thereunder, unless:

(1) such Holder has previously given to the Trustee under the applicable Indenture written notice of a continuing Event of Default with respect to the Debt Securities of that series;

(2) the Holders of at least 25% in principal amount of the Outstanding Debt Securities of that series have made written request, and such Holder or Holders have offered reasonable indemnity, to the Trustee to institute such proceeding as trustee; and

(3) the Trustee has failed to institute such proceeding, and has not received from the Holders of a majority in principal amount of the Outstanding Debt Securities of that series a direction inconsistent with such request, within 60 days after such notice, request and offer (Section 6.04).

However, such limitations do not apply to a suit instituted by a Holder of a Debt Security for the enforcement of payment of the principal of or any premium or interest on such Debt Security on or after the applicable due date specified in such Debt Security or, if applicable, to convert such Debt Security (Section 6.04).

We will be required to furnish to each Trustee annually a statement by certain of our officers as to whether or not we, to their knowledge, are in default in the performance or observance of any of the terms, provisions and conditions of the applicable Indenture and, if so, specifying all such known defaults (Section 4.06).

Modifications and amendments of an Indenture may be made by us and the applicable Trustee with the consent of the Holders of a majority in principal amount of the Outstanding Debt Securities of each series affected by such modification or amendment; provided, however, that no such modification or amendment may, without the consent of the Holder of each Outstanding Debt Security affected thereby:

The Holders of a majority in principal amount of the Outstanding Debt Securities of any series may waive compliance by us with certain restrictive provisions of the applicable Indenture (Section 6.06). The Holders of a majority in principal amount of the Outstanding Debt Securities of any series may waive any past default under the applicable Indenture, except a default in the payment of principal, premium or interest and certain covenants and provisions of the Indenture which cannot be amended without the consent of the Holder of each Outstanding Debt Security of such series (Section 6.06).

Each of the Indentures provides that in determining whether the Holders of the requisite principal amount of the Outstanding Debt Securities have given or taken any direction, notice, consent, waiver or other action under such Indenture as of any date:

Certain Debt Securities, including those owned by us or any of our Affiliates, will not be deemed to be Outstanding (Section 8.03).

Except in certain limited circumstances, we will be entitled to set any day as a record date for the purpose of determining the Holders of Outstanding Debt Securities of any series entitled to give or take any direction, notice, consent, waiver or other action under the applicable Indenture, in the manner and subject to the limitations provided in the Indenture. In certain limited circumstances, the Trustee will be entitled to set a record date for action by Holders. If a record date is set for any action to be taken by Holders of a particular series, only persons who are Holders of Outstanding Debt Securities of that series on the record date may take such action.

Each Indenture will be discharged and will cease to be of further effect as to all outstanding Debt Securities of any series issued thereunder, when:

(a) all outstanding Debt Securities of that series that have been authenticated (except lost, stolen or destroyed Debt Securities that have been replaced or paid and Debt Securities for whose payment money has theretofore been deposited in trust and thereafter repaid to us) have been delivered to the Trustee for cancellation; or

(b) all outstanding Debt Securities of that series that have not been delivered to the Trustee for cancellation have become due and payable or will become due and payable at their Stated Maturity within one year or are to be called for redemption within one year under arrangements satisfactory to the Trustee and in any case we have irrevocably deposited with the Trustee as trust funds money in an amount sufficient, without consideration of any reinvestment of interest, to pay the entire indebtedness of such Debt Securities not delivered to the Trustee for cancellation, for principal, premium, if any, and accrued interest to the Stated Maturity or redemption date;

(2) we have paid or caused to be paid all other sums payable by us under the Indenture with respect to the Debt Securities of that series; and

(3) we have delivered an Officers’ Certificate and an Opinion of Counsel to the Trustee stating that all conditions precedent to satisfaction and discharge of the Indenture with respect to the Debt Securities of that series have been satisfied (Article XI).

If and to the extent indicated in the applicable prospectus supplement, we may elect, at our option at any time, to have the provisions of Section 11.02, relating to defeasance and discharge of indebtedness, which we call “legal defeasance,” or relating to defeasance of certain restrictive covenants applied to the Debt Securities of any series, or to any specified part of a series, which we call “covenant defeasance.”

The Indentures provide that, upon our exercise of our option (if any) to have Section 11.02 applied to any Debt Securities, we will be discharged from all our obligations, and, if such Debt Securities are Subordinated Debt Securities, the provisions of the Subordinated Indenture relating to subordination will cease to be effective, with respect to such Debt Securities (except for certain obligations to convert, exchange or register the transfer of Debt Securities, to replace stolen, lost or mutilated Debt Securities, to maintain paying agencies and to hold monies for payment in trust) upon the deposit in trust for the benefit of the Holders of such Debt Securities of money or United States Government Obligations, or both, which, through the payment of principal and interest in respect thereof in accordance with their terms, will provide money in an amount sufficient to pay the principal of and any premium and interest on such Debt Securities on the respective Stated Maturities in accordance with the terms of the applicable Indenture and such Debt Securities. Such defeasance or discharge may occur only if, among other things:

The Indentures provide that, upon our exercise of our option (if any) to have Section 11.02 applied to any Debt Securities, we may omit to comply with certain restrictive covenants (but not to conversion, if applicable), including those that may be described in the applicable prospectus supplement, the occurrence of certain Events of Default, which are described above in clause (5) (with respect to such restrictive covenants) and clauses (5) and (6) under “— Events of Default” and any that may be described in the applicable prospectus supplement, will not be deemed to either be or result in an Event of Default and, if such Debt Securities are Subordinated Debt Securities, the provisions of the Subordinated Indenture relating to subordination will cease to be effective, in each case with respect to such Debt Securities. In order to exercise such option, we must deposit, in trust for the benefit of the Holders of such Debt Securities, money or United States Government Obligations, or both, which, through the payment of principal and interest in respect thereof in accordance with their terms, will provide money in an amount sufficient to pay the principal of and any premium and interest on such Debt Securities on the respective Stated Maturities in accordance with the terms of the applicable Indenture and such Debt Securities. Such covenant defeasance may occur only if we have delivered to the applicable Trustee an Opinion of Counsel that in effect says that Holders of such Debt Securities will not recognize gain or loss for federal income tax purposes as a result of such deposit and covenant defeasance and will be subject to federal income tax on the same amount, in the same manner and at the same times as would have been the case if such deposit and covenant defeasance were not to occur, and the requirements listed in the last four bullet points above are satisfied. If we exercise this option with respect to any Debt Securities and such Debt Securities were declared due and payable because of the occurrence of any Event of Default, the amount of money and United States Government Obligations so deposited in trust would be sufficient to pay amounts due on such Debt Securities at the time of their respective Stated Maturities but may not be sufficient to pay amounts due on such Debt Securities upon any acceleration resulting from such Event of Default. In such case, we would remain liable for such payments (Section 11.02).

Notices to Holders of Debt Securities will be given by mail to the addresses of such Holders as they may appear in the Security Register (Section 12.03).

We, the Trustees and any of our agents may treat the Person in whose name a Debt Security is registered as the absolute owner of the Debt Security (whether or not such Debt Security may be overdue) for the purpose of making payment and for all other purposes (Section 8.03).

The Indentures and the Debt Securities will be governed by, and construed in accordance with, the law of the State of New York without regard to conflicts of law principles (Section 12.04).

The following is a brief description of our capital stock. This summary does not purport to be complete in all respects. This description is subject to and qualified in its entirety by reference to our certificate of incorporation, as amended, copies of which have been filed with the SEC and are also available upon request from us.

Under our certificate of incorporation, as amended, we have authority to issue up to 10 million shares of preferred stock, par value $0.01 per share. No shares of preferred stock are issued and outstanding as of the date hereof. We have 100,000,000 shares of authorized common stock, $0.01 par value per share, of which 37,917,789 shares were outstanding as of May 4, 2012.

If we offer to sell newly-issued preferred stock, our board of directors is authorized to designate and issue shares of preferred stock in one or more series without stockholder approval. Our board of directors would have discretion to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock.

If we offer to sell newly-issued preferred stock, we will file the terms of the preferred stock with the SEC, and the prospectus supplement relating to that offering will include a description of the specific terms of the offering, including the following specific terms:

It is not possible to state the actual effect of the issuance of any shares of preferred stock upon the rights of holders of our common stock until the board of directors determines the specific rights of the holders of the preferred stock. However, these effects might include:

Each holder of our common stock is entitled to one vote for each share held on all matters with respect to which the holders of our common stock are entitled to vote. Our common stock has no preemptive or conversion rights and is not subject to redemption. Holders of our common stock are not entitled to cumulative voting in the

election of directors. In the event of dissolution or liquidation, after payment of all creditors and payment of liquidation preferences on preferred stock, the holders of our common stock (subject to the prior rights of the holders of any outstanding preferred stock) will be entitled to receive pro rata any assets distributable to stockholders in respect of the number of shares held by them. The holders of shares of our common stock are entitled to such dividends as our board of directors, in its discretion, may declare out of funds legally available therefor, subject to certain limitations under the Delaware General Corporation Law, or DGCL. We have not paid dividends on our common stock to date, and we do not anticipate paying dividends in the near future. However, the payment of dividends on our common stock is subject to the prior rights of the holders of any preferred stock. Payment of dividends on both our common stock and any preferred stock, will be dependent upon, among other things, our earnings and financial condition, our cash flow requirements and the prevailing economic and regulatory climate.

Certain provisions included in our certificate of incorporation, as amended, our amended and restated bylaws, as amended, as well as certain provisions of the DGCL and federal law, may discourage or prevent potential acquisitions of control of us. These provisions are more fully set forth in our Registration Statement on Form 10, as amended, which was filed with the SEC on August 24, 2000, and is incorporated by reference into this prospectus.

The Bank Holding Company Act of 1956, the “BHC Act,” generally would prohibit any company that is not engaged in banking activities and activities that are permissible for a bank holding company or a financial holding company from acquiring control of us. “Control” is generally defined as ownership of 25% or more of the voting stock, control over the election of a majority of the directors, or other exercise of a controlling influence. In addition, any existing bank holding company would need the prior approval of the Federal Reserve before acquiring 5% or more of our voting stock. In addition, the Change in Bank Control Act of 1978, as amended, prohibits a person or group of persons from acquiring control of a bank holding company unless the Federal Reserve has been notified and has not objected to the transaction. Under a rebuttable presumption established by the Federal Reserve, the acquisition of 10% or more of a class of voting stock of a bank holding company with a class of securities registered under Section 12 of the Exchange Act, such as TCBI, could constitute acquisition of control of the bank holding company.

The transfer agent and registrar for our common stock is Computershare Investor Services LLC.

On January 16, 2009, in connection with the U.S. Department of Treasury’s voluntary capital purchase program, we issued warrants to purchase 758,086 shares of our Common Stock at $14.84 per share. These warrants expire on January 16, 2019 and are still outstanding. We may issue additional warrants for the purchase of common stock. Warrants may be issued independently or together with debt securities or common stock offered by any prospectus supplement and may be attached to or separate from any such offered securities. Series of warrants may be issued under a separate warrant agreement entered into between us and a bank or trust company, as warrant agent, all as will be set forth in the prospectus supplement relating to the particular issue of warrants. The warrant agent would act solely as our agent in connection with the warrants and would not assume any obligation or relationship of agency or trust for or with any holders of warrants or beneficial owners of warrants.

The following summary of certain provisions of the warrants does not purport to be complete and is subject to, and is qualified in its entirety by reference to, all provisions of the warrant agreements.

Reference is made to the prospectus supplement relating to the particular issue of warrants offered pursuant to such prospectus supplement for the terms of and information relating to such warrants, including, where applicable:

Warrants will be issued in registered form only. The exercise price for warrants will be subject to adjustment in accordance with the applicable prospectus supplement.

Each warrant will entitle the holder thereof to purchase such number of shares of common stock at such exercise price as shall be set forth in, or calculable from, the prospectus supplement relating to the warrants, which exercise price may be subject to adjustment upon the occurrence of certain events as set forth in such prospectus supplement. After the close of business on the expiration date, or such later date to which such expiration date may be extended by us, unexercised warrants will become void. The place or places where, and the manner in which, warrants may be exercised shall be specified in the prospectus supplement relating to such warrants.

Prior to the exercise of any warrants to purchase common stock, holders of such warrants will not have any of the rights of holders of common stock purchasable upon such exercise, including the right to receive payments of dividends, if any, on the common stock purchasable upon such exercise, or to exercise any applicable right to vote.

This section describes the general terms and provisions of the units. The prospectus supplement will describe the specific terms of the units offered through that prospectus supplement and any general terms outlined in this section that will not apply to those units.

We may issue units comprised of two or more of the other securities described in this prospectus in any combination. Each unit will be issued so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. The unit agreement under which a unit is issued may provide that the securities included in the unit may not be held or transferred separately, at any time or at any time before a specified date.

We may sell the securities offered by this prospectus to one or more underwriters for public offering and sale by them or may sell the securities to investors directly or through dealers or agents, or through a combination of methods. Any underwriter, dealer or agent involved in the offer and sale of the securities will be named in the applicable prospectus supplement.

We may distribute our securities from time to time in one or more transactions at: (1) a fixed price or prices, which may be changed, (2) market prices prevailing at the time of sale, (3) prices related to the prevailing market prices at the time of sale, or (4) negotiated prices. We also may, from time to time, authorize underwriters acting as our agents to offer and sell the securities upon the terms and conditions as set forth in the applicable prospectus supplement. In connection with the sale of securities, underwriters may be deemed to have received compensation from us in the form of underwriting discounts or commissions and may also receive commissions from purchasers of securities for whom they may act as agent. Underwriters may sell securities to or through dealers, and the dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters and/or commissions from the purchasers for whom they may act as agent.

Any underwriting compensation paid by us to underwriters, dealers or agents in connection with the offering of securities, and any discounts, concessions or commissions allowed by underwriters to participating dealers, will be set forth in the applicable prospectus supplement. Dealers and agents participating in the distribution of the securities may be deemed to be underwriters, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting discounts and commissions under the Securities Act. Underwriters, dealers and agents may be entitled, under agreements entered into with us, to indemnification against contribution toward civil liabilities, including liabilities under the Securities Act.

To facilitate the offering of the securities, certain persons participating in the offering may engage in transactions that stabilize, maintain, or otherwise affect the price of the securities. This may include over-allotments or short sales of the securities, which involves the sale by persons participating in the offering of more securities than we sold to them. In these circumstances, the persons would cover the over-allotments or short positions by making purchases in the open market or by exercising their over-allotment option. In addition, these persons may stabilize or maintain the price of the securities by bidding for or purchasing securities in the open market or by imposing penalty bids, whereby selling concessions allowed to dealers participating in the offering may be reclaimed if securities sold by them is repurchased in connection with stabilization transactions. The effect of these transactions may be to stabilize or maintain the market price of the securities at a level above that which might otherwise prevail in the open market. These transactions may be discontinued at any time.

The underwriters, dealers and agents and their affiliates may engage in transactions with and perform services for us in the ordinary course of business for which they receive compensation.

In compliance with the guidelines of the Financial Industry Regulatory Authority, Inc. (“FINRA”), the maximum discount or commission to be received by any FINRA member or independent broker-dealer may not exceed 8.00% of the aggregate gross sales proceeds of any shares of common stock offered hereby.

Any common stock sold pursuant to a prospectus supplement will be eligible for listing and trading on Nasdaq Global Select Market, subject to official notice of issuance.

Unless otherwise indicated in the applicable prospectus supplement, the offered securities may, subject to certain legal restrictions, be held by (i) pension, profit sharing, and other employee benefit plans which are subject to Title I of the Employee Retirement Security Act of 1974, as amended (which we refer to as “ERISA”), (ii) plans, accounts, and other arrangements that are subject to Section 4975 of the Internal Revenue Code of 1986, as amended (which we refer to as the “Code”), or provisions under federal, state, local, non-U.S., or other laws or regulations that are similar to any of the provisions of Title I of ERISA or Section 4975 of the Code (which we refer to as “Similar Laws”), and (iii) entities whose underlying assets are considered to include “plan assets” of any such plans, accounts, or arrangement. Section 406 of ERISA and Section 4975 of the Code prohibit plans from engaging in specified transactions involving “plan assets” with persons who are “parties in interest” under ERISA or “disqualified persons” under the Code with respect to such pension, profit sharing, or other employee

benefit plans that are subject to Section 406 of ERISA and Section 4975 of the Code. A violation of these prohibited transaction rules may result in an excise tax or other liabilities under ERISA and/or Section 4975 of the Code. A violation of these prohibited transaction rules may result in an excise tax or other liabilities under ERISA and/or Section 4975 of the Code for such persons, unless exemptive relief is available under an applicable statutory or administrative exemption. A fiduciary of any such plan, account, or arrangement must determine that the purchase and holding of an interest in the offered securities is consistent with its fiduciary duties and will not constitute or result in a non-exempt prohibited transaction under Section 406 of ERISA or Section 4975 of the Code, or a violation under any applicable Similar Laws.

The validity of the securities offered hereby will be passed upon for us by Winstead PC. The name of the law firm advising any underwriters or agents with respect to certain issues relating to any offering will be set forth in the applicable prospectus supplement.

We file annual, quarterly and current reports, proxy statements and other information with the SEC. Our SEC filings are available to the public over the Internet at the SEC’s website at http:/www.sec.gov. Copies of certain information filed by us with the SEC are also available on our website at http:/www.texascapitalbank.com. Our website is not a part of this prospectus. You may also read and copy any document we file at the SEC’s public reference room, 100 F Street, N.E., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference room.

We will provide to each person, including any beneficial owner, to whom a prospectus is delivered, a copy of any or all of the documents or information that have been incorporated by reference in this prospectus but not delivered with this prospectus. We will provide this at no cost to the requestor upon written or telephonic request addressed to Texas Capital Bancshares, Inc., 2000 McKinney Avenue, Suite 700, Dallas, Texas 75201, Attention: Myrna Vance (telephone: 214-932-6600).

You should rely only on the information contained or incorporated by reference in this prospectus. We have not authorized anyone else to provide you with additional or different information.


	Per Note		Total
Public offering price (1)	$	25.000000	$	100,000,000
Underwriting discounts and commissions (2)	$	0.589125	$	2,356,500
Proceeds, before expenses, to us (3)	$	24.410875	$	97,643,500


	Page
ABOUT THIS PROSPECTUS SUPPLEMENT		S-ii
FORWARD-LOOKING STATEMENTS		S-iii
PROSPECTUS SUPPLEMENT SUMMARY		S-1
RISK FACTORS		S-6
USE OF PROCEEDS		S-11
CAPITALIZATION		S-12
RATIOS OF EARNINGS TO FIXED CHARGES		S-13
DESCRIPTION OF THE NOTES		S-14
BOOK-ENTRY SYSTEM—THE DEPOSITORY TRUST COMPANY		S-20
CERTAIN FEDERAL INCOME AND ESTATE TAX CONSIDERATIONS		S-23
CERTAIN ERISA CONSIDERATIONS		S-27
UNDERWRITING		S-29
LEGAL MATTERS		S-32
EXPERTS		S-32
WHERE YOU CAN FIND MORE INFORMATION		S-32

Base Prospectus
ABOUT THIS PROSPECTUS		1
FORWARD-LOOKING STATEMENTS		2
ABOUT TEXAS CAPITAL BANCSHARES, INC.		2
RISK FACTORS		3
USE OF PROCEEDS		3
RATIO OF EARNINGS TO FIXED CHARGES		3
SELECTED FINANCIAL DATA		3
THE SECURITIES WE MAY OFFER		5
DESCRIPTION OF DEBT SECURITIES		5
DESCRIPTION OF CAPITAL STOCK AND WARRANTS		16
DESCRIPTION OF UNITS		18
PLAN OF DISTRIBUTION		18
CERTAIN ERISA CONSIDERATIONS		19
LEGAL MATTERS		21
EXPERTS		21
WHERE YOU CAN FIND MORE INFORMATION		21


	As of June 30, 2012
	Actual			As Adjusted
	(Unaudited)
	(In thousands)
Cash and cash equivalents	$	142,651		$	312,163

Debt:
Total short-term debt		1,594,039			1,594,039
Notes offered hereby		—			100,000
Junior subordinated debentures		113,406			113,406
Long-term bank debt		15,000			—

Total debt		1,722,445			1,807,445

Stockholders’ equity:
Preferred stock, $.01 par value, $1,000 liquidation value
Authorized shares—10,000,000		—			—
Common stock, $.01 par value
Authorized shares—100,000,000
Issued shares—38,114,429, actual and 40,414,429 as adjusted		381			404
Additional paid-in capital		357,713			444,678
Retained earnings		318,490			318,490
Treasury stock (shares at cost: 417)		(8	)		(8	)
Accumulated other comprehensive income, net of taxes		4,129			4,129

Total stockholders’ equity		680,705			767,693

Total capitalization	$	2,403,150		$	2,575,138


Underwriter	Principal Amount
Deutsche Bank Securities Inc	$	55,500,000
U.S. Bancorp Investments, Inc.		23,125,000
Macquarie Capital (USA) Inc		13,875,000
Raymond James & Associates, Inc.		7,500,000

Total	$	100,000,000


ABOUT THIS PROSPECTUS			1

FORWARD-LOOKING STATEMENTS			2

ABOUT TEXAS CAPITAL BANCSHARES, INC.			2

RISK FACTORS			3

USE OF PROCEEDS			3

RATIO OF EARNINGS TO FIXED CHARGES			3

SELECTED FINANCIAL DATA			3

THE SECURITIES WE MAY OFFER			5

DESCRIPTION OF DEBT SECURITIES			5

DESCRIPTION OF CAPITAL STOCK AND WARRANTS			16

DESCRIPTION OF UNITS			18

PLAN OF DISTRIBUTION			18

CERTAIN ERISA CONSIDERATIONS			19

LEGAL MATTERS			21

EXPERTS			21

WHERE YOU CAN FIND MORE INFORMATION			21


Deutsche Bank Securities		US Bancorp		Macquarie Capital


	Year ended December 31
	2011			2010			2009
Interest income
Interest and fees on loans	$	314,753		$	270,003		$	229,500
Securities		6,458			9,481			13,578
Federal funds sold		37			210			31
Deposits in other banks		352			116			44

Total interest income		321,600			279,810			243,153
Interest expense
Deposits		14,950			33,309			37,824
Federal funds purchased		602			1,097			2,404
Repurchase agreements		10			10			53
Other borrowings		528			48			1,949
Trust preferred subordinated debentures		2,573			3,672			4,232

Total interest expense		18,663			38,136			46,462

Net interest income		302,937			241,674			196,691
Provision for credit losses		28,500			53,500			43,500

Net interest income after provision for credit losses		274,437			188,174			153,191
Non-interest income
Service charges on deposit accounts		6,480			6,392			6,287
Trust fee income		4,219			3,846			3,815
Bank owned life insurance (BOLI) income		2,095			1,889			1,579
Brokered loan fees		11,335			11,190			9,043
Equipment rental income		1,905			4,134			5,557
Other		6,198			4,812			2,979

Total non-interest income		32,232			32,263			29,260
Non-interest expense
Salaries and employee benefits		100,535			85,298			73,419
Net occupancy expense		13,657			12,314			12,291
Leased equipment depreciation		1,482			3,297			4,319
Marketing		11,109			5,419			3,034
Legal and professional		14,996			11,837			11,846
Communications and technology		9,608			8,511			6,510
FDIC insurance assessment		7,543			9,202			8,464
Allowance and other carrying costs for OREO		9,586			10,404			10,345
Other		19,685			17,206			15,314

Total non-interest expense		188,201			163,488			145,542

Income from continuing operations before income taxes		118,468			56,949			36,909
Income tax expense		42,366			19,626			12,522

Income from continuing operations		76,102			37,323			24,387
Loss from discontinued operations (after-tax)		(126	)		(136	)		(235	)

Net income		75,976			37,187			24,152
Preferred stock dividends		—			—			5,383

Net income available to common shareholders	$	75,976		$	37,187		$	18,769

Basic earnings per common share
Income from continuing operations	$	2.04		$	1.02		$	0.56
Net income	$	2.03		$	1.02		$	0.55
Diluted earnings per common share
Income from continuing operations	$	1.99		$	1.00		$	0.55
Net income	$	1.98		$	1.00		$	0.55
Other comprehensive income
Unrealized gain (loss) on available-for-sale securities arising during period, before tax	$	(974	)	$	(1,246	)	$	6,609
Income tax benefit related to unrealized gain (loss) on available-for-sale securities		(341	)		(436	)		2,313

Other comprehensive gain (loss), net of tax		(633	)		(810	)		4,296

Comprehensive income	$	75,343		$	36,377		$	28,448