Exhibit 1.1

UNION BANKSHARES CORPORATION

4,725,000 Shares of Common Stock

(Par Value $1.33 Per Share)

UNDERWRITING AGREEMENT

September 10, 2009

KEEFE, BRUYETTE & WOODS, INC.

as Representative of the several Underwriters

c/o Keefe, Bruyette & Woods, Inc.

787 Seventh Avenue, Fourth Floor

New York, New York 10019

Ladies and Gentlemen:

Union Bankshares Corporation, a Virginia corporation (the “Company”), confirms its agreement with Keefe, Bruyette & Woods, Inc. (“Keefe Bruyette”) and each of the other Underwriters named in Schedule A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom Keefe Bruyette is acting as representative (in such capacity, the “Representative”), with respect to (i) the sale by the Company and the purchase by the Underwriters, acting severally and not jointly, of the respective numbers of shares of common stock, par value $1.33 per share, of the Company (“Common Stock”) set forth in Schedule A hereto and (ii) the grant by the Company to the Underwriters, acting severally and not jointly, of the option described in Section 2(b) hereof to purchase all or any part of 708,750 additional shares of Common Stock to cover over-allotments, if any. The 4,725,000 shares of Common Stock to be purchased by the Underwriters (the “Initial Securities”) and all or any part of the 708,750 shares of Common Stock subject to the option described in Section 2(b) hereof (the “Option Securities”) are hereinafter called, collectively, the “Securities.”

The Company understands that the Underwriters propose to make a public offering of the Securities as soon as the Representative deems advisable after this Agreement has been executed and delivered.

The Company has filed with the Securities and Exchange Commission (the “Commission”) a shelf registration statement on Form S-3 (No. 333-154730), including the related base prospectus covering the registration of the Securities under the Securities Act of 1933, as amended (the “1933 Act”). The Company has prepared and filed such amendments to the registration statement and such amendments or supplements to the related preliminary prospectus as may have been required to the date hereof, and will file such additional amendment or supplements as may hereafter be required. Promptly after execution and delivery of this Agreement, the Company will prepare and file a prospectus in accordance with the provisions of Rule 430B (“Rule 430B”) of the rules and regulations of the Commission under the 1933 Act (the “1933 Act Regulations”) and paragraph (b) of Rule 424 (“Rule 424(b)”) of the 1933 Act Regulations. The information included in such prospectus that was omitted from such registration statement at the time it became effective, but that is deemed to be part of such registration statement at the time it became effective pursuant to paragraph (b) of Rule 430B, is referred to as the “Rule 430B Information.” The preliminary prospectus supplement and accompanying base prospectus in the form first furnished to the Underwriters for use in connection with the offering of the securities is herein called a “preliminary prospectus.” Such registration statement, including any amendments, the

exhibits and schedules thereto, if any, and all information deemed to be part of the registration statement pursuant to incorporation by reference, at the time it became effective and including the Rule 430B Information is referred to herein as the “Registration Statement.” Any registration statement filed pursuant to Rule 462(b) of the 1933 Act Regulations is referred to herein as the “Rule 462(b) Registration Statement,” and, after such filing, the term “Registration Statement” shall include the Rule 462(b) Registration Statement. The final prospectus supplement and accompanying base prospectus in the form first furnished to the Underwriters for use in connection with the offering of the Securities is referred to herein as the “Prospectus.” For purposes of this Agreement, all references to the Registration Statement, any preliminary prospectus, the Prospectus, or any amendment or supplement to any of the foregoing, shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system (“EDGAR”).

All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” in the Registration Statement, any preliminary prospectus or the Prospectus (or other references of like import) shall be deemed to mean and include all such financial statements and schedules and other information which is incorporated by reference in the Registration Statement, any preliminary prospectus or the Prospectus, as the case may be; and all references in this Agreement to amendments or supplements to the Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to mean and include the filing of any document under the Securities Exchange Act of 1934, as amended (the “1934 Act”), which is incorporated by reference in the Registration Statement, such preliminary prospectus or the Prospectus, as the case may be.

SECTION 1. Representations and Warranties and Agreements.

(a) Representations and Warranties by the Company. The Company represents and warrants to each Underwriter as of the date hereof, as of the Closing Time referred to in Section 2(c) hereof, and as of each Date of Delivery (if any) referred to in Section 2(b) hereof, and agrees with each Underwriter, as follows:

(i) Compliance with Registration Requirements. (A) At the time of filing the Registration Statement, any Rule 462(b) Registration Statement and any post-effective amendments thereto; (B) at the earliest time thereafter that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Securities; and (C) at the date hereof, the Company was not an “ineligible issuer” as defined in Rule 405 of the 1933 Act Regulations (“Rule 405”). The Company meets the requirements for use of Form S-3 under the 1933 Act. Each of the Registration Statement and any Rule 462(b) Registration Statement has become effective under the 1933 Act, and no stop order suspending the effectiveness of the Registration Statement and any post-effective amendment thereto or any Rule 462(b) Registration Statement has been issued, no order preventing or suspending the use of any preliminary prospectus has been issued, and no proceedings for such purposes has been instituted or are pending or, to the knowledge of the Company, are contemplated by the Commission, and any request on the part of the Commission for additional information has been complied with.

At the respective times the Registration Statement, any Rule 462(b) Registration Statement and any post-effective amendment thereto became effective and at the Closing Time (and, if any Option Securities are purchased, at the Date of Delivery), the Registration Statement, the Rule 462(b) Registration Statement and any amendments and supplements thereto complied and will comply in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations and did not and will not contain an untrue statement of a material fact or omit to state a material fact required

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to be stated therein or necessary to make the statements therein not misleading. Neither the Prospectus nor any amendments or supplements thereto, at the time any such amendment or supplement was issued and at the Closing Time (and, if any Option Securities are purchased, at the Date of Delivery), included or will include an untrue statement of a material fact or omitted or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

Each preliminary prospectus and the prospectus filed as part of the Registration Statement as originally filed or as part of any amendment thereto, or filed pursuant to Rule 424 under the 1933 Act, complied when so filed in all material respects with the 1933 Act and the 1933 Act Regulations, and each preliminary prospectus and the Prospectus delivered to the Underwriters for use in connection with this offering was identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T. Any Issuer-Represented Free Writing Prospectus (as defined below) used in connection with this offering was identical to any electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

As of the Applicable Time, neither (x) the Issuer-Represented General Free Writing Prospectus(es) (as defined below) issued at or prior to the Applicable Time and the Statutory Prospectus (as defined below), all considered together (collectively, the “General Disclosure Package”), nor (y) any individual Issuer-Represented Limited Use Free Writing Prospectus (as defined below), when considered together with the General Disclosure Package, included any untrue statement of a material fact or omitted to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

As used in this subsection and elsewhere in this Agreement:

“Applicable Time” means 6:30 p.m. (Eastern time) on the date of this Agreement or such other time as agreed by the Company and Keefe Bruyette.

“Issuer-Represented Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 of the 1933 Act Regulations (“Rule 433”), relating to the Securities that (i) is required to be filed with the Commission by the Company or (ii) is exempt from filing pursuant to Rule 433(d)(5)(i) because it contains a description of the Securities or of the offering that does not reflect the final terms, in each case in the form filed or required to be filed with the Commission, or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g).

“Issuer-Represented General Free Writing Prospectus” means any Issuer-Represented Free Writing Prospectus that is intended for general distribution to prospective investors, as evidenced by its being specified in Schedule B hereto.

“Issuer-Represented Limited Use Free Writing Prospectus” means any Issuer-Represented Free Writing Prospectus that is not an Issuer-Represented General Free Writing Prospectus.

“Statutory Prospectus” means, as of any time, the prospectus relating to the Securities that is included in the Registration Statement immediately prior to that time, including any document incorporated by reference therein and any prospectus supplement deemed to be a part thereof. For purposes of this definition, information contained in a form of prospectus that

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is deemed retroactively to be a part of the Registration Statement pursuant to Rule 430B shall be considered to be included in the Statutory Prospectus as of the actual time that form of prospectus is filed with the Commission pursuant to Rule 424(b).

Each Issuer-Represented Free Writing Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Securities, or until any earlier date that the issuer notified or notifies Keefe Bruyette, did not, does not and will not include any information that conflicted, conflicts or will conflict with the information contained in the Registration Statement or the Prospectus, including any document incorporated by reference therein, and any preliminary or other prospectus deemed to be a part thereof that has not been superseded or modified, including any document incorporated by reference therein and any preliminary or other prospectus supplement deemed to be a part thereof that has not been superseded or modified.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement, any preliminary prospectus, the Prospectus or any Issuer-Represented Free Writing Prospectus made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through Keefe Bruyette expressly for use therein.

(ii) Incorporated Documents. The documents incorporated or deemed to be incorporated by reference in the Registration Statement and the Prospectus, when they became effective or at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the 1934 Act and the rules and regulations of the Commission thereunder (the “1934 Act Regulations”), and, when read together with the other information in the Prospectus, at the time the Registration Statement became effective, at the time the Prospectus was issued and at the Closing Time (and, if any Option Securities are purchased, at the Date of Delivery), did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

(iii) Independent Accountants of the Company. Yount, Hyde & Barbour, PC, the accounting firm that audited the financial statements as of December 31, 2007 and December 31, 2008 and for the three years ended December 31, 2006, December 31, 2007 and December 31, 2008 and supporting schedules, if any, of the Company included in the Registration Statement, the General Disclosure Package and the Prospectus, or are incorporated by reference therein, is and was during the periods indicated an independent registered public accounting firm as required by the 1933 Act and the 1933 Act Regulations and is registered with the Public Company Accounting Oversight Board. With respect to the Company, Yount, Hyde & Barbour, PC is not and has not been in violation of the auditor independence requirements of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith (the “Sarbanes-Oxley Act”).

(iv) Independent Accountants of First Market Bank. McGladrey & Pullen, LLP, the accounting firm that audited the financial statements as of December 31, 2007 and December 31, 2008 and for the three years ended December 31, 2006, December 31, 2007 and December 31, 2008 and supporting schedules, if any, of First Market Bank, FSB (“First Market Bank”) included in the Registration Statement, the General Disclosure Package and the Prospectus, or are incorporated by reference therein, is and was during the periods indicated an independent registered public accounting firm as required by the 1933 Act and the 1933 Act Regulations and is registered with the Public Company Accounting Oversight Board. With respect to First Market Bank, and to the Company’s knowledge, McGladrey & Pullen, LLP is not and has not been in violation of the auditor independence requirements of the Sarbanes-Oxley Act.

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(v) Financial Statements. The financial statements included in the Registration Statement, the General Disclosure Package and the Prospectus, or incorporated by reference therein, together with the related schedules and notes, present fairly the financial position of the Company and its consolidated subsidiaries and of First Market Bank, respectively, at the dates indicated and the statement of income, changes in shareholders’ equity and cash flows of the Company and its consolidated subsidiaries and of First Market Bank, respectively, for the periods specified, and said financial statements have been prepared in conformity with generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods involved. The supporting schedules, if any, included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in accordance with GAAP the information required to be stated therein. The summary consolidated financial information included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included in the Registration Statement and the books and records of the Company. No other financial statements or schedules are required to be included in the Registration Statement. To the extent applicable, all disclosures contained in the Registration Statement, the General Disclosure Package or the Prospectus regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply with Regulation G of the 1934 Act, the 1934 Act Regulations and Item 10 of Regulation S-K under the 1933 Act, as applicable. The pro forma financial statements and the related notes thereto included in the Registration Statement and the Prospectus present fairly the information shown therein, have been prepared in accordance with the Commission’s rules and guidelines with respect to pro forma financial statements and have been properly compiled on the bases described therein, and the assumptions used in the preparation thereof are reasonable and the adjustments used therein are appropriate to give effect to the transactions and circumstances referred to therein.

(vi) No Material Adverse Change in Business. Since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package and the Prospectus, except as otherwise stated therein, (A) there has been no material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and the Subsidiaries (as defined below) considered as one enterprise, whether or not arising in the ordinary course of business (a “Material Adverse Effect”), (B) there have been no transactions entered into by the Company or any of the Subsidiaries, other than those in the ordinary course of business, that are material with respect to the Company and the Subsidiaries considered as one enterprise, and (C) except for quarterly dividends on (1) the Common Stock in amounts per share that are consistent with recent past practice and (2) the 59,000 shares of the Company’s Fixed Rate Cumulative Perpetual Preferred Stock, Series A issued to the United States Department of the Treasury on December 19, 2008, there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock.

(vii) Good Standing of the Company. The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the Commonwealth of Virginia and has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and to enter into and perform its obligations under this Agreement. The Company is a registered bank holding company under the Bank Holding Company Act of 1956, as amended, is duly qualified as a foreign corporation to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect.

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(viii) Good Standing of Subsidiaries. Each direct and indirect subsidiary of the Company (each a “Subsidiary” and, collectively, the “Subsidiaries”) has been duly organized and is validly existing as a state chartered bank, national banking association, corporation, limited liability company or other entity, as the case may be, in good standing under the laws of the jurisdiction of its organization, has requisite power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and is duly qualified as a foreign entity to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect. Except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, all of the issued and outstanding capital stock of each Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable and is owned by the Company, directly or through a Subsidiary, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity. None of the outstanding shares of capital stock of any Subsidiary was issued in violation of the preemptive or similar rights of any securityholder of any Subsidiary. The only subsidiaries of the Company are the Subsidiaries listed on Schedule C hereto.

(ix) Capitalization. The authorized, issued and outstanding capital stock of the Company is as set forth in the Registration Statement, the General Disclosure Package and the Prospectus in the column entitled “Actual” under the caption “Capitalization” (except for subsequent issuances, if any, pursuant to this Agreement, pursuant to reservations, agreements or employee benefit plans referred to in the Registration Statement, the General Disclosure Package and the Prospectus or pursuant to the exercise of convertible securities or options referred to in the Registration Statement, the General Disclosure Package and the Prospectus). The shares of issued and outstanding capital stock have been duly authorized and validly issued and the shares of capital stock are fully paid and non-assessable. None of the outstanding shares of capital stock were issued in violation of the preemptive or other similar rights of any securityholder of the Company.

(x) Authorization of Agreement. This Agreement has been duly authorized, executed and delivered by the Company and, when duly executed by the Representative, will constitute the valid and binding agreement of the Company enforceable against the Company in accordance with its terms, except as may be limited or otherwise affected by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or other similar statutes, rules, regulations or other laws affecting the enforcement of creditors’ rights and remedies generally, and the unavailability of, or limitation on the availability of, a particular right or remedy (whether in a proceeding in equity or at law) because of equitable principles.

(xi) Authorization and Description of Securities. The Securities to be purchased by the Underwriters from the Company have been duly authorized for issuance and sale to the Underwriters pursuant to this Agreement and, when issued and delivered by the Company pursuant to this Agreement against payment of the consideration set forth herein, will be validly issued and fully paid and non-assessable free and clear of any security interest, mortgage, pledge, lien, charge, claim, equity or encumbrance of any kind, other than pursuant to this Agreement. The Common Stock conforms to all statements relating thereto contained in the Registration Statement, the General Disclosure Package and the Prospectus and such description conforms to the rights set forth in the instruments defining the same. No holder of the Securities will be subject to personal liability for the debts of the Company by reason of being such a holder, and the issuance of the Securities is not subject to the preemptive or other similar rights of any securityholder of the Company. The form of certificate used to evidence the Common Stock complies in all material respects with all applicable statutory requirements, with any applicable

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requirements of the organizational documents of the Company and the requirements of The Nasdaq Global Select Market. All securities issued by the Company, any of the Subsidiaries or any trusts established by the Company or any Subsidiary have been or will be issued and sold in compliance with (A) all applicable federal and state securities laws, (B) the laws of the applicable jurisdiction of organization of the issuing entity, and (C) to the extent applicable to the issuing entity, the requirements of The Nasdaq Global Select Market or other exchange on which the securities may be traded.

(xii) Absence of Defaults and Conflicts. Neither the Company nor any of the Subsidiaries is in violation of its charter, by-laws or other organizational documents or in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of the Subsidiaries is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any Subsidiary is subject (collectively, “Agreements and Instruments”) except for such defaults that would not result in a Material Adverse Effect. The execution, delivery and performance of this Agreement and the consummation of the transactions contemplated herein and in the Registration Statement, the General Disclosure Package and the Prospectus (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described in the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations hereunder have been duly authorized by all necessary corporate action and do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any Subsidiary pursuant to, the Agreements and Instruments, except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not result in a Material Adverse Effect, nor will such action result in any violation of the provisions of the charter or by-laws of the Company or any Subsidiary or any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any Subsidiary or any of their assets, properties or operations. As used herein, a “Repayment Event” means any event or condition that gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any Subsidiary.

(xiii) Absence of Labor Dispute or Discrimination Claims. No labor dispute with the employees of the Company or any Subsidiary exists or, to the knowledge of the Company, is imminent, and the Company is not aware of any existing or imminent labor disturbance by the employees of any of its or any Subsidiary’s principal suppliers, manufacturers, customers or contractors, that, in either case, may reasonably be expected to result in a Material Adverse Effect. Neither the Company nor any Subsidiary is in violation of or has received notice of any violation with respect to any federal or state law relating to discrimination in the hiring, promotion or pay of employees, nor any applicable federal or state wages and hours law, nor any state law precluding the denial of credit due to the neighborhood in which a property is situated, the violation of any of which could have a Material Adverse Effect.

(xiv) Absence of Proceedings. There is no action, suit, proceeding, inquiry or investigation before or brought by any court or governmental agency or body, domestic or foreign, now pending or, to the knowledge of the Company, threatened against or affecting the Company or any Subsidiary that is required to be disclosed in the Registration Statement, the General Disclosure Package and the Prospectus (other than as disclosed therein) or that might reasonably be expected to result in a Material Adverse Effect or that might reasonably be expected to materially and adversely affect the properties and assets thereof or consummation of the transactions contemplated in this Agreement or the

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performance by the Company of its obligations hereunder. The aggregate of all pending legal or governmental proceedings to which the Company or any Subsidiary is a party, or of which any of their respective property or assets is the subject, that are not described in the Registration Statement, the General Disclosure Package or the Prospectus, including ordinary routine litigation incidental to the business, could not reasonably be expected to result in a Material Adverse Effect.

(xv) Accuracy of Exhibits. There are no contracts or documents that are required to be described in the Registration Statement, the General Disclosure Package, the Prospectus or the documents incorporated by reference therein or to be filed as exhibits thereto that have not been so described and filed as required. All such contracts to which the Company or any of the Subsidiaries is a party have been duly authorized, executed and delivered by the Company or such Subsidiary, constitute valid and binding agreements of the Company or such Subsidiary and are enforceable against the Company or such Subsidiary in accordance with the terms thereof, except as the enforceability thereof may be limited or otherwise affected by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance or other similar statutes, rules, regulations or other laws affecting the enforcement of creditors’ rights and remedies generally, and the unavailability of, or limitation on the availability of, a particular right or remedy (whether in a proceeding in equity or at law) because of equitable principles.

(xvi) Possession of Intellectual Property. The Company and the Subsidiaries own or possess, or can acquire on reasonable terms, adequate patents, patent rights, licenses, inventions, copyrights, know-how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures and excluding generally commercially available “off the shelf” software programs licensed pursuant to shrink wrap or “click and accept” licenses), trademarks, service marks, trade names or other intellectual property (collectively, “Intellectual Property”) necessary to carry on the business now operated by them, and neither the Company nor any of the Subsidiaries has received any notice or is otherwise aware of any infringement of or conflict with asserted rights of others with respect to any Intellectual Property or of any facts or circumstances that would render any Intellectual Property invalid or inadequate to protect the interest of the Company or any of the Subsidiaries therein, and which infringement or conflict (if the subject of any unfavorable decision, ruling or finding) or invalidity or inadequacy, singly or in the aggregate, would result in a Material Adverse Effect.

(xvii) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency is necessary or required for the performance by the Company of its obligations hereunder, in connection with the offering, issuance or sale of the Securities hereunder or the consummation of the transactions contemplated by this Agreement, except such as have been already obtained or as may be required under the 1933 Act or the 1933 Act Regulations or state and foreign securities laws.

(xviii) Possession of Licenses and Permits. The Company and the Subsidiaries possess such permits, licenses, approvals, consents and other authorizations (collectively, “Governmental Licenses”) issued by the appropriate federal, state, local or foreign regulatory agencies or bodies necessary to conduct the business now operated by them. The Company and the Subsidiaries are in compliance with the terms and conditions of all such Governmental Licenses, except where the failure so to comply would not, singly or in the aggregate, have a Material Adverse Effect. All of the Governmental Licenses are valid and in full force and effect, except where the invalidity of such Governmental Licenses or the failure of such Governmental Licenses to be in full force and effect would not have a Material Adverse Effect. Neither the Company nor any of the Subsidiaries has received any notice of proceedings relating to the revocation or modification of any such Governmental Licenses that, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would result in a

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Material Adverse Effect. Neither the Company nor any of the Subsidiaries has failed to file with applicable regulatory authorities any statement, report, information or form required by any applicable law, regulation or order, except where the failure to be so in compliance would not, individually or in the aggregate, have a Material Adverse Effect, and all such filings were in material compliance with applicable laws when filed and no material deficiencies have been asserted by any regulatory commission, agency or authority with respect to any such filings or submissions.

(xix) Title to Property. The Company and the Subsidiaries have good and marketable title to all real property owned by the Company and the Subsidiaries and good title to all other properties owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (a) are described in the General Disclosure Package and the Prospectus or (b) do not, singly or in the aggregate, materially affect the value of such property and do not interfere with the use made and proposed to be made of such property by the Company or any of the Subsidiaries. All of the leases and subleases material to the business of the Company and the Subsidiaries, considered as one enterprise, and under which the Company or any of the Subsidiaries holds properties described in the General Disclosure Package and the Prospectus, are in full force and effect, and neither the Company nor any Subsidiary has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of the Company or any Subsidiary under any of the leases or subleases mentioned above, or affecting or questioning the rights of the Company or such Subsidiary to the continued possession of the leased or subleased premises under any such lease or sublease.

(xx) Compliance with Cuba Act. The Company has complied with, and is and will be in compliance with, the provisions of that certain Florida act relating to disclosure of doing business with Cuba, codified as Section 517.075 of the Florida statutes, and the rules and regulations thereunder (collectively, the “Cuba Act”) or is exempt therefrom.

(xxi) Investment Company Act. The Company is not, and upon the issuance and sale of the Securities as herein contemplated and the application of the net proceeds therefrom as described in the General Disclosure Package and the Prospectus will not be, an “investment company” or an entity “controlled” by an “investment company” as such terms are defined in the Investment Company Act of 1940, as amended.

(xxii) Environmental Laws. Except as described in the Registration Statement and except as would not, singly or in the aggregate, result in a Material Adverse Effect, (A) neither the Company nor any of the Subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products, asbestos-containing materials or mold (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”), (B) the Company and the Subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are no pending or threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of the Subsidiaries and (D) there are no events or circumstances that might reasonably be expected to form the

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basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of the Subsidiaries relating to Hazardous Materials or any Environmental Laws.

(xxiii) Taxes. The Company and each of the Subsidiaries has (a) timely filed all material foreign, United States federal, state and local tax returns, information returns, and similar reports that are required to be filed (taking into account valid extensions), and all tax returns are true, correct and complete, (b) paid in full all taxes required to be paid by it and any other assessment, fine or penalty levied against it, except for any such tax assessment, fine or penalty that is currently being contested in good faith or as would not have, individually or in the aggregate, a Material Adverse Effect, and (c) established on the most recent balance sheet reserves that are adequate for the payment of all taxes not yet due and payable.

(xxiv) Insurance. The Company and the Subsidiaries carry, or are covered by, insurance in such amounts and covering such risks as the Company reasonably believes are adequate for the conduct of the business of the Company and the Subsidiaries and the value of their properties and as are customary in the business in which the Company and the Subsidiaries are engaged. Neither the Company nor the Subsidiaries has been refused any insurance coverage sought or applied for, and the Company has no reason to believe that they will not be able to renew their existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a Material Adverse Effect.

(xxv) Statistical and Market Data. The statistical and market related data contained in the Registration Statement, the General Disclosure Package and the Prospectus are based on or derived from sources that the Company believes are reliable and accurate.

(xxvi) Relationship. No relationship, direct or indirect, exists between or among the Company or any of the Subsidiaries, on the one hand, and the directors, officers, shareholders, customers or suppliers of the Company or any of the Subsidiaries, on the other, that is required by the 1933 Act or by the rules and regulations of the Commission thereunder to be described in the Registration Statement and/or the Prospectus and that is not so described.

(xxvii) Internal Control Over Financial Reporting. The Company and the Subsidiaries maintain “internal control over financial reporting” (as such term is defined in Rule 13a-15(f) under the 1934 Act Regulations). Except as described in the Registration Statement, General Disclosure Package and Prospectus, since the end of the Company’s most recent audited fiscal year, there has been (1) no material weakness in the Company’s internal control over financial reporting (whether or not remediated) and (2) no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

(xxviii) Disclosure Controls and Procedures. The Company and the Subsidiaries employ “disclosure controls and procedures” (as such term is defined in Rule 13a-15(e) under the 1934 Act Regulations) that are effective in all material respects to perform the functions described in Rule 13a-15(e) under the 1934 Act Regulations. As of the Company’s last evaluation of its disclosure controls and procedures pursuant to Rule 13a-15(e) under the 1934 Act Regulations, the Company is not aware of (1) any significant deficiency in the design or operation of internal controls that could adversely affect the Company’s ability to record, process, summarize and report financial data or any material weaknesses in internal controls or (2) any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s internal controls. Since the most recent evaluation of the Company’s disclosure controls and procedures described above, there have been no significant changes in internal controls or in other factors that could significantly affect internal controls.

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(xxix) Compliance with the Sarbanes-Oxley Act. There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply in all material respects with any provision of the Sarbanes-Oxley Act, including Section 402 related to loans and Sections 302 and 906 related to certifications.

(xxx) Pending Procedures and Examinations. The Registration Statement is not the subject of a pending proceeding or examination under Section 8(d) or Section 8(e) of the 1933 Act, and the Company is not the subject of a pending proceeding under Section 8A of the 1933 Act in connection with the offering of the Securities.

(xxxi) Unlawful Payments. Neither the Company nor any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or other person associated with or acting on behalf of the Company or any of the Subsidiaries has (A) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity, (B) made any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds, (C) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977, or (D) made any bribe, rebate, payoff, influence payment, kickback or other similar unlawful payment.

(xxxii) No Registration Rights. Except as contemplated by the Merger Agreement, no person has the right to require the Company or any of the Subsidiaries to register any securities for sale under the 1933 Act for any reason, including by reason of the filing of the Registration Statement with the Commission or the issuance and sale of the Securities to be sold by the Company hereunder.

(xxxiii) No Stabilization or Manipulation. Neither the Company nor any of the Subsidiaries, nor any affiliates of the Company or the Subsidiaries, has taken, and none of them will take, directly or indirectly, any action designed to or that could reasonably be expected to cause or result in any stabilization or manipulation of the price of the Securities.

(xxxiv) No Unauthorized Use of Prospectus. The Company has not distributed and, prior to the later to occur of (i) the Closing Time and (ii) completion of the distribution of the Securities, will not distribute any prospectus (as such term is defined in the 1933 Act and the 1933 Act Regulations) in connection with the offering and sale of the Securities other than the Registration Statement, any preliminary prospectus, the Prospectus or other materials, if any, permitted by the 1933 Act or by the 1933 Act Regulations and approved by Keefe Bruyette.

(xxxv) Forward-Looking Statements. No forward-looking statement (within the meaning of Section 27A of the 1933 Act and Section 21E of the 1934 Act) contained in the Registration Statement and the Prospectus has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith.

(xxxvi) Lock-up Agreements. Each of the Company’s executive officers and directors, in each case as listed on Schedule D hereto, has executed and delivered lock-up agreements as contemplated by Section 5(k) hereof.

(xxxvii) Fees. Other than as contemplated by this Agreement, there is no broker, finder or other party that is entitled to receive from the Company or any Subsidiary any brokerage or finder’s fee or any other fee, commission or payment as a result of the transactions contemplated by this Agreement.

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(xxxviii) ERISA. The Company and each of the Subsidiaries or their “ERISA Affiliates” (as defined below) are in compliance in all material respects with all presently applicable provisions of the Employee Retirement Income Security Act of 1974, as amended, including the regulations and published interpretations thereunder (“ERISA”). No “reportable event” (as defined in ERISA) has occurred with respect to any “employee benefit plan” (as defined in ERISA) for which the Company or any of the Subsidiaries or ERISA Affiliates would have any liability. The Company and each of the Subsidiaries or their ERISA Affiliates have not incurred and do not expect to incur liability under (i) Title IV of ERISA with respect to termination of, or withdrawal from, any “employee benefit plan” or (ii) Sections 412, 4971, 4975 or 4980B of the United States Internal Revenue Code of 1986, as amended, and the regulations and published interpretations thereunder (collectively the “Code”). Each “employee benefit plan” for which the Company and each of the Subsidiaries or any of their ERISA Affiliates would have any liability that is intended to be qualified under Section 401(a) of the Code is so qualified in all material respects and nothing has occurred, whether by action or by failure to act, that would cause the loss of such qualification. “ERISA Affiliate” means, with respect to the Company or a Subsidiary, any member of any group of organizations described in Sections 414(b), (c), (m) or (o) of the Code or Section 400(b) of ERISA of which the Company or such Subsidiary is a member.

(xxxix) Regulatory Agreements. Except as disclosed in the preliminary prospectus or the Prospectus, neither the Company nor any of the Subsidiaries is a party to or subject to any order, decree, agreement, memorandum or understanding or similar agreement with, or a commitment letter, supervisory letter or similar submission to, any governmental entity charged with the supervision or regulation of depository institutions or engaged in the insurance of deposits (including the Board of Governors of the Federal Reserve, the Federal Deposit Insurance Corporation (the “FDIC”) or the Bureau of Financial Institutions of Virginia State Corporation Commission (the “BFI”)) or the supervision or regulation of it or any of the Subsidiaries, except as would not, singly or in the aggregate, result in a Material Adverse Effect, and neither the Company nor any of the Subsidiaries has been advised by any such governmental entity that such governmental entity is contemplating issuing or requesting (or is considering the appropriateness of issuing or requesting) any such order, decree, agreement, memorandum or understanding, commitment letter, supervisory letter or similar submission, except as would not, singly or in the aggregate, result in a Material Adverse Effect.

(xl) Deposit Insurance, FHLB Membership and Bank Regulations. The deposit accounts of each of Union Bank & Trust Company, Northern Neck State Bank and Rappahannock National Bank (collectively, the “Banks”) are insured by the FDIC to the legal maximum, and each of the Banks have paid all premiums and assessments required by the FDIC and the regulations promulgated by the FDIC, and no proceeding for the termination or revocation of such insurance is pending or threatened. Each of the Banks are members in good standing of the Federal Home Loan Bank of Atlanta. Each of the Banks have complied with all rules and regulations of the FDIC and the BFI, except for violations that would not result in a Material Adverse Effect.

(xli) The Nasdaq Global Select Market. The Securities to be sold by the Company are duly authorized for listing, subject to official notice of issuance, on The Nasdaq Global Select Market.

(xlii) Insider Loans. The Company has provided a true, correct and complete list of any still outstanding extension of credit made, directly or indirectly, by the Company or any of the Subsidiaries to any Insider (as “Insider” is defined by 12 C.F.R. §215.2(h)) of the Company or any of its

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Subsidiaries, or to any family member or affiliate of any Insider of the Company or any of the Subsidiaries. Since January 1, 2000, the Company has not, except as permitted in each Bank’s capacity as a lending institution, directly or indirectly, including through any of the Subsidiaries: (A) extended credit, arranged to extend credit, or renewed any extension of credit to or for any Insider of the Company or any of its Subsidiaries, or to or for any family member or affiliate of any Insider of the Company or any of the Subsidiaries; or (B) made any material modification, including any renewal thereof, to any term of any loan to any Insider of the Company or any of its Subsidiaries, or any family member or affiliate of any Insider.

(xliii) Off Balance Sheet Transactions. There are no transactions, arrangements and other relationships between and/or among the Company and/or, to the knowledge of the Company, any of the Subsidiaries, affiliates and any unconsolidated entity, including, but not limited to, any structural finance, special purpose or limited purpose entity (each, an “Off Balance Sheet Transaction”) that could reasonably be expected to affect materially the Company’s liquidity or the availability of or requirements for its capital resources, including those Off Balance Sheet Transactions described in the Commission’s Statement about Management’s Discussion and Analysis of Financial Conditions and Results of Operations (Release Nos. 33-8056, 34-45321, and FR-61), required to be described in any preliminary prospectus or the Prospectus that have not been described as required.

(xliv) Compliance with Rule 424. The Company has made all filings required by Rule 424 under the 1933 Act in a timely manner.

(xlv) No Broker or Dealer. Neither the Company nor any of its affiliates (A) is required to register as a “broker” or “dealer” in accordance with the provisions of the 1934 Act or the 1934 Act Regulations, or (B) directly, or indirectly through one or more intermediaries, controls or has any other association (within the meaning of Article I of the By-laws of the Financial Industry Regulatory Authority (“FINRA”)) with any member firm of FINRA.

(xlvi) Privacy Statements. The Company (A) complies with the Privacy Statements (as defined below) as applicable to any given set of personal information collected by the Company from Individuals (as defined below), (B) complies in all material respects with all applicable federal, state, local and foreign laws and regulations regarding the collection, retention, use, transfer or disclosure of personal information, and (C) takes reasonable measures to protect and maintain the confidential nature of the personal information provided to the Company by Individuals in accordance with the terms of the applicable Privacy Statements. To the Company’s knowledge, no claims or controversies have arisen regarding the Privacy Statements or the implementation thereof. As used herein, “Privacy Statements” means, collectively, any and all of the Company’s privacy statements and policies published on Company websites or products or otherwise made available by the Company regarding the collection, retention, use and distribution of the personal information of individual, including, without limitation, from visitors or users of any Company websites or products (“Individuals”).

(xlvii) Money Laundering and Terrorism Finance. Neither the Company nor any of the Subsidiaries, nor, to the Company’s knowledge, any of its affiliates or any director, officer, agent or employee of, or other person associated with or acting on behalf of, the Company, has violated the Bank Secrecy Act, as amended, the Uniting and Strengthening of America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 or the rules and regulations promulgated under any such law or any successor law. The operations of the Company and the Subsidiaries and, to the Company’s knowledge, its affiliates are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the Money Laundering Control Act of 1986, as amended, any other

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money laundering statutes of all jurisdictions, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Money Laundering Laws”), except for any such non-compliance as would not, singly or in the aggregate, result in a Material Adverse Effect, and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of the Subsidiaries, or, to the Company’s knowledge, any of its affiliates, with respect to the Money Laundering Laws is pending or, to the Company’s knowledge, threatened.

(xlviii) OFAC. Neither the Company nor any of the Subsidiaries, nor, to the Company’s knowledge, any of its affiliates or any director, officer, agent or employee of, or other person associated with or acting on behalf of, the Company, is currently subject to any United States sanctions administered by the Office of Foreign Assets Control of the United States Department of the Treasury (“OFAC”). The Company will not directly or indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds to any Subsidiary, partner or joint venturer or other person or entity, for the purpose of financing the activities of any person currently subject to any United States sanctions administered by OFAC.

(xlix) Merger with First Market Bank.

(A) The Company has entered into the First Amended and Restated Agreement and Plan of Reorganization, entered into on June 19, 2009 and dated and made effective as of March 30, 2009, by and between the Company and First Market Bank (together, the “Merger Agreement”). In connection with transactions contemplated by the Merger Agreement (the “Merger”), the Company conducted a “due diligence” review of the business, financial condition, results of operations and business prospects of First Market Bank. Based upon the Company’s review, with respect to First Market Bank or the Merger, nothing has come to the Company’s attention that caused it to believe that the Registration Statement, any Preliminary Prospectus, the Final Prospectus or the General Disclosure package contained an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading.

(B) The Merger Agreement has been duly authorized, executed and delivered by the Company and constitutes a valid and binding agreement of the Company and is enforceable against the Company in accordance with its terms. To the Company’s knowledge, the Merger Agreement has been duly authorized, executed and delivered by First Market Bank and constitutes a valid and binding agreement of First Market Bank and is enforceable against First Market Bank in accordance with its terms. As of the date hereof, (1) the representations and warranties made in the Merger Agreement and related disclosure schedules by the Company were true and correct as of the date of the Merger Agreement and are true and correct on the date hereof (except that representations and warranties that in their terms speak as of some other date were true and correct as of such date), and (2) the covenants and other agreements of the Company set forth in the Merger Agreement have not been breached, in a manner such that, with respect to either clause (1) or (2) hereof, First Market Bank has the right to terminate such agreement. As of the date hereof, nothing has come to the Company’s attention that caused it to believe that (1) the representations and warranties made in the Merger Agreement and related disclosure schedules by First Market Bank were not true and correct as of the date of the Merger Agreement and are not true and correct on the date hereof (except that representations and warranties that in their terms speak as of some other date were true and correct as of such date), and (2) the covenants and other agreements of First Market Bank set forth in the Merger Agreement have been breached, in a manner such that, with respect to either clause (1) or (2) hereof, the Company has the right to terminate such agreement.

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(b) Officer’s Certificates. Any certificate signed by the President and Chief Executive Officer of the Company, the Chief Financial Officer of the Company and the Secretary or assistant secretary of the Company, delivered to the Representative or to counsel for the Underwriters shall be deemed a representation and warranty by the Company to each Underwriter as to the matters covered thereby.

SECTION 2. Sale and Delivery to Underwriters; Closing.

(a) Initial Securities. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to each Underwriter, severally and not jointly, and each Underwriter, severally and not jointly, agrees to purchase from the Company, at the price per share set forth in Schedule E, the Initial Securities, plus any additional number of Initial Securities that such Underwriter may become obligated to purchase pursuant to the provisions of Section 10 hereof, subject, in each case, to such adjustments among the Underwriters as the Representative in its sole discretion shall make to eliminate any sales or purchases of fractional securities.

(b) Option Securities. In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company hereby grants an option to the Underwriters, severally and not jointly, to purchase up to an additional 708,750 shares of Common Stock, at the price per share set forth in Schedule E, less an amount per share equal to any dividends or distributions declared by the Company and payable on the Initial Securities but not payable on the Option Securities. The option hereby granted will expire 30 days after the date hereof and may be exercised in whole or in part from time to time only for the purpose of covering over-allotments that may be made in connection with the offering and distribution of the Initial Securities upon notice by the Representative to the Company setting forth the number of Option Securities as to which the several Underwriters are then exercising the option and the time and date of payment and delivery for such Option Securities. Any such time and date of delivery (a “Date of Delivery”) shall be determined by the Representative, but shall not be later than seven full business days after the exercise of said option, nor in any event prior to the Closing Time, as hereinafter defined. If the option is exercised as to all or any portion of the Option Securities, each of the Underwriters, acting severally and not jointly, will purchase that proportion of the total number of Option Securities then being purchased that the number of Initial Securities set forth in Schedule A opposite the name of such Underwriter bears to the total number of Initial Securities, subject in each case to such adjustments as the Representative in its discretion shall make to eliminate any sales or purchases of fractional shares.

(c) Payment. Payment of the purchase price for, and delivery of certificates for, the Initial Securities shall be made at the offices of Nelson Mullins Riley & Scarborough LLP, 101 Constitution Avenue, N.W., Suite 900, Washington, D.C. 20001, or at such other place as shall be agreed upon by the Representative and the Company, at 9:00 a.m. (Eastern time) on the third (fourth, if the pricing occurs after 4:30 p.m. (Eastern time) on any given day) business day after the date hereof (unless postponed in accordance with the provisions of Section 10), or such other time not later than ten business days after such date as shall be agreed upon by the Representative and the Company (such time and date of payment and delivery being herein called the “Closing Time”).

In addition, in the event that any or all of the Option Securities are purchased by the Underwriters, payment of the purchase price for, and delivery of certificates for, such Option Securities shall be made at the above-mentioned offices, or at such other place as shall be agreed upon by the Representative and the Company, on each Date of Delivery as specified in the notice from the Representative to the Company.

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Payment shall be made to the Company by wire transfer of immediately available funds to bank accounts designated by the Company against delivery to the Representative for the respective accounts of the Underwriters of certificates for the Securities to be purchased by them. It is understood that each Underwriter has authorized the Representative, for its account, to accept delivery of, receipt for, and make payment of the purchase price for the Initial Securities and the Option Securities, if any, that it has agreed to purchase. Keefe Bruyette, individually and not as Representative of the Underwriters, may (but shall not be obligated to) make payment of the purchase price for the Initial Securities or the Option Securities, if any, to be purchased by any Underwriter whose funds have not been received by the Closing Time or the relevant Date of Delivery, as the case may be, but such payment shall not relieve such Underwriter from its obligations hereunder.

(d) Denominations; Registration. Certificates for the Initial Securities and the Option Securities, if any, shall be in such denominations and registered in such names as the Representative may request in writing at least one full business day before the Closing Time or the relevant Date of Delivery, as the case may be. The certificates for the Initial Securities and the Option Securities, if any, will be made available for examination and packaging by the Representative in The City of New York not later than 10:00 a.m. (Eastern time) on the business day prior to the Closing Time or the relevant Date of Delivery, as the case may be.

SECTION 3. Covenants

(a) Covenants of the Company. The Company covenants with each Underwriter as follows:

(i) Compliance with Securities Regulations and Commission Requests. The Company, subject to Section 3(a)(ii), will comply with the requirements of Rule 430B and will notify the Representative immediately, and confirm the notice in writing, (i) when any post-effective amendment to the Registration Statement shall become effective or any supplement to the Prospectus or any amended Prospectus shall have been filed, (ii) of the receipt of any comments from the Commission, (iii) of any request by the Commission for any post-effective amendment to the Registration Statement or any amendment or supplement to the Prospectus or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or of any order preventing or suspending the use of any preliminary prospectus, or of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any examination pursuant to Section 8(e) of the 1933 Act concerning the Registration Statement and (v) if the Company becomes the subject of a proceeding under Section 8A of the 1933 Act in connection with the offering of the Securities. The Company will promptly effect the filings necessary pursuant to Rule 424(b) in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)) and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus. The Company will make every reasonable effort to prevent the issuance of any stop order and, if any stop order is issued, to obtain the lifting thereof at the earliest possible moment. The Company will comply with all of the provisions of any undertakings in the Registration Statement.

(ii) Filing of Amendments. The Company will give the Representative notice of its intention to file or prepare any post-effective amendment to the Registration Statement, any filing under

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Rule 462(b), or any amendment, supplement or revision to either any preliminary prospectus (including the prospectus included in the Registration Statement at the time it became effective) or to the Prospectus, whether pursuant to the 1933 Act or otherwise, will furnish the Representative with copies of any such documents a reasonable amount of time prior to such proposed filing or use, as the case may be, and will not file or use any such document to which the Representative or counsel for the Underwriters shall reasonably object.

(iii) Delivery of Registration Statements. The Company has furnished or will deliver to the Representative and counsel for the Underwriters, without charge, signed copies of the Registration Statement as originally filed and of each amendment thereto (including exhibits filed therewith or therein or incorporated by reference therein and documents incorporated or deemed incorporated by reference therein) and signed copies of all consents and certificates of experts, and will also deliver to the Representative, without charge, a conformed copy of the Registration Statement as originally filed and of each amendment thereto (without exhibits) for each of the Underwriters. The copies of the Registration Statement and each amendment thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

(iv) Delivery of Prospectuses. The Company has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus as such Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the 1933 Act. The Company will furnish to each Underwriter, without charge, during the period when the Prospectus is required to be delivered under the 1933 Act or the 1934 Act, such number of copies of the Prospectus (as amended or supplemented) as such Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

(v) Continued Compliance with Securities Laws. The Company will comply with the 1933 Act and the 1933 Act Regulations and the 1934 Act and the 1934 Act Regulations so as to permit the completion of the distribution of the Securities as contemplated in this Agreement and in the Prospectus. If at any time when a prospectus is required by the 1933 Act to be delivered in connection with sales of the Securities, any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriters or for the Company, to amend the Registration Statement or amend or supplement the Prospectus in order that the Prospectus will not include any untrue statements of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in light of the circumstances existing at the time it is delivered to a purchaser or, if it shall be necessary, in the opinion of such counsel, at any such time to amend the Registration Statement or amend or supplement the Prospectus in order to comply with the requirements of the 1933 Act or the 1933 Act Regulations, the Company will promptly prepare and file with the Commission, subject to Section 3(a)(ii), such amendment or supplement as may be necessary to correct such statement or omission or to make the Registration Statement or the Prospectus comply with such requirements, and the Company will furnish to the Underwriters such number of copies of such amendment or supplement as the Underwriters may reasonably request. If at any time following issuance of an Issuer-Represented Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer-Represented Free Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement or included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances prevailing at that subsequent time, not misleading, the Company has promptly notified or will promptly notify the Representative and has promptly amended or will promptly amend or supplement, at its own expense, such Issuer-Represented Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

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(vi) Blue Sky Qualifications. The Company will use its best efforts, in cooperation with the Underwriters, to qualify the Securities for offering and sale under the applicable securities laws of such states and other jurisdictions (domestic or foreign) as the Representative may designate and to maintain such qualifications in effect for a period of not less than one year from the later of the effective date of the Registration Statement and any Rule 462(b) Registration Statement; provided, however, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject. In each jurisdiction in which the Securities have been so qualified, the Company will file such statements and reports as may be required by the laws of such jurisdiction to continue such qualification in effect for a period of not less than one year from the effective date of the Registration Statement and any Rule 462(b) Registration Statement. The Company will also supply the Underwriters with such information as is necessary for the determination of the legality of the Securities for investment under the laws of such jurisdiction as the Underwriters may request.

(vii) Rule 158. The Company will timely file such reports pursuant to the 1934 Act as are necessary in order to make generally available to its securityholders as soon as practicable an earnings statement in conformity with the requirements of Rule 158 for the purposes of, and to provide the benefits contemplated by, the last paragraph of Section 11(a) of the 1933 Act.

(viii) Use of Proceeds. The Company will use the net proceeds received by it from the sale of the Securities sold by it in the manner specified in the Prospectus under “Use of Proceeds.”

(ix) Listing. The Company will use its best efforts to effect and maintain the listing of the Securities on The Nasdaq Global Select Market.

(x) Transfer Agent. The Company will maintain, at its expense, a registrar and transfer agent for the Securities.

(xi) Restriction on Sale of Securities. During a period of 90 days from the date of the Prospectus (the “Restricted Period”), the Company will not, without the prior written consent of Keefe Bruyette, (i) directly or indirectly, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or otherwise transfer or dispose of any share of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or file any registration statement under the 1933 Act with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Common Stock, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise. The foregoing sentence shall not apply to (A) the Securities to be sold by the Company hereunder, (B) any shares of Common Stock issued by the Company upon the exercise of an option or warrant or the conversion of a security outstanding on the date hereof and referred to in the Prospectus, (C) any shares of Common Stock issued or options to purchase Common Stock granted pursuant to existing employee benefit plans of the Company referred to in the Prospectus provided that such options shall not be vested and exercisable within the 90-day period referred to above, (D) any shares of Common Stock to be issued in connection with the transactions contemplated by the Merger Agreement, or (E) any shares of Common Stock issued pursuant to any non-employee director stock plan or dividend reinvestment plan. Notwithstanding the

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foregoing, in the event that either (i) during the period that begins on the date that is 15 calendar days plus 3 business days before the last day of the Restricted Period and ends on the last day of the Restricted Period, the Company issues an earnings release or material news or a material event relating to the Company occurs, or (ii) prior to the expiration of the Restricted Period, the Company announces that it will release earnings results during the 16-day period beginning on the last day of the Restricted Period, the restrictions set forth herein will continue to apply until the expiration of the date that is 15 calendar days plus 3 business days after the date on which the earnings release is issued or the material news or event related to the Company occurs.

(xii) Reporting Requirements. The Company, during the period when the Prospectus is required to be delivered (whether physically or through compliance with Rule 172 under the 1933 Act or any similar rule) under the 1933 Act or the 1934 Act, will file all documents required to be filed with the Commission pursuant to the 1934 Act within the time periods required by the 1934 Act, will provide Keefe Bruyette, for its review and comment, with a copy of such reports and statements and other documents to be filed by the Company pursuant to Section 13, 14 or 15(d) of the 1934 Act during such period a reasonable amount of time prior to any proposed filing, will file no such report, statement or document to which Keefe Bruyette shall have raised a reasonable objection in writing, and will promptly notify Keefe Bruyette of such filing.

(xiii) Issuer Free Writing Prospectus. The Company represents and agrees that, unless it obtains the prior consent of Keefe Bruyette, and each Underwriter represents and agrees that, unless it obtains the prior consent of the Company and Keefe Bruyette, it has not made and will not make any offer relating to the Securities that would constitute an “issuer free writing prospectus,” as defined in Rule 433, or that would otherwise constitute a “free writing prospectus,” as defined in Rule 405, required to be filed with the Commission. Any such free writing prospectus consented to by the Representative and the Company is hereinafter referred to as an “Issuer Permitted Free Writing Prospectus.” The Company represents that it has treated or agrees that it will treat each Issuer Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and has complied and will comply with the requirements of Rule 433 applicable to any Issuer Permitted Free Writing Prospectus, including timely filing with the Commission where required, legending and record keeping.

(xiv) Compliance with the Sarbanes-Oxley Act and Related Corporate Governance Rules. During the time when a prospectus is required to be delivered under the 1933 Act (whether physically or through compliance with Rule 172 under the 1933 Act or any similar rule), the Company shall at all times comply, in all material respects, with all applicable provisions of the Sarbanes-Oxley Act, including the related rules and regulations promulgated thereunder by the Commission and The Nasdaq Stock Market, Inc., in effect from time to time.

(xv) Notice of Issuance. The Company will timely file a “Notification Form: Change in the Number of Shares Outstanding” with The Nasdaq Stock Market, Inc.

(xvi) Compliance with Rule 433(g). The Company will comply with Rule 433(g) under the 1933 Act.

(xvii) Directors and Officers Insurance. The Company shall obtain or maintain directors and officers liability insurance at levels and scope of coverage which the Company believes are adequate and appropriate.

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SECTION 4. Payment of Expenses.

(a) Expenses. The Company will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and of each amendment thereto, (ii) the preparation, printing and delivery to the Underwriters of this Agreement, any agreement among Underwriters and such other documents as may be required in connection with the offering, purchase, sale, issuance or delivery of the Securities, (iii) the preparation, issuance and delivery of the certificates for the Securities to the Underwriters, including any stock or other transfer taxes and any stamp or other duties payable upon the sale, issuance or delivery of the Securities to the Underwriters, (iv) the fees and disbursements of the Company’s counsel, accountants and other advisors, (v) the qualification of the Securities under securities laws in accordance with the provisions of Section 3(a)(vi) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection therewith and in connection with the preparation of the Blue Sky Survey and any supplement thereto, (vi) the printing and delivery to the Underwriters of copies of each preliminary prospectus, any Issuer Permitted Free Writing Prospectus and of the Prospectus and any amendments or supplements thereto (including any costs associated with electronic delivery of these materials), (vii) the preparation, printing and delivery to the Underwriters of copies of the Blue Sky Survey and any supplement thereto, (viii) the fees and expenses of any transfer agent or registrar for the Securities, (ix) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of the Securities, including without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, travel and lodging expenses of the representative and officers of the Company and any such consultants, and the cost of aircraft and other transportation chartered in connection with the road show, (x) the filing fees incident to, and the reasonable fees and disbursements of counsel to the underwriters in connection with, the review by FINRA of the terms of the sale of the Securities, and (xi) the fees and expenses incurred in connection with the listing of the Securities on The Nasdaq Global Select Market.

(b) Termination of Agreement. If this Agreement is terminated by the Representative in accordance with the provisions of Section 5 or Section 9(a)(i) hereof, the Company shall reimburse the Underwriters for all of their out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriters.

SECTION 5. Conditions of Underwriters’ Obligations.

The obligations of the several Underwriters hereunder are subject to the accuracy of the representations and warranties of the Company contained in Section 1 hereof or in certificates of any officer of the Company or any Subsidiary of the Company delivered pursuant to the provisions hereof, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement. The Registration Statement, including any Rule 462(b) Registration Statement, has become effective and, at the Closing Time, no stop order suspending the effectiveness of the Registration Statement shall have been issued under the 1933 Act or proceedings therefore initiated or threatened by the Commission, and any request on the part of the Commission for additional information shall have been complied with to the reasonable satisfaction of counsel to the Underwriters. A prospectus supplement containing the Rule 430B Information shall have been filed with the Commission in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)) (or a post-effective amendment providing such information shall have been filed and declared effective in accordance with the requirements of Rule 430B).

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(b) Opinion of Counsel for Company. At the Closing Time, the Representative shall have received the opinion, dated as of the Closing Time, of each of LeClairRyan, counsel for the Company, and Janis Orfe, Executive Vice President and General Counsel of the Company, each in the form and substance satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters to the effect set forth in Exhibit A hereto and to such further effect as counsel to the Underwriters may reasonably request, each in form and substance satisfactory to counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters.

(c) Opinion of Counsel for Underwriters. At the Closing Time, the Representative shall have received the favorable opinion, dated as of the Closing Time, of Nelson Mullins Riley & Scarborough LLP, counsel for the Underwriters, addressed to the Representative and in form and substance satisfactory to the Representative.

(d) Officers’ Certificate. At the Closing Time, there shall not have been, since the date hereof or since the respective dates as of which information is given in the preliminary prospectus, the General Disclosure Package or the Prospectus, as of the execution of this Agreement or the Applicable Time, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and the Subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, and the Representative shall have received a certificate of the President of the Company and of the chief financial or chief accounting officer of the Company, dated as of the Closing Time, to the effect that (i) there has been no such material adverse change, (ii) the representations and warranties in Section 1(a) hereof are true and correct with the same force and effect as though expressly made at and as of the Closing Time, (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Time, and (iv) no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or are pending or are contemplated by the Commission.

(e) First Market Bank Officers’ Certificate. At the time of the execution of this Agreement, the Company shall have caused First Market Bank to deliver to the Underwriters a certificate, dated as of the date hereof, of the Chief Executive Officer of First Market Bank and of the Chief Financial Officer of First Market Bank substantially in the form of Exhibit C, hereto.

(f) First Market Bank Bring Down Officers’ Certificate. At the Closing Time, the Company shall have caused First Market Bank to deliver to the Underwriters a certificate, dated as of the Closing Date, of the Chief Executive Officer of First Market Bank and of the Chief Financial Officer of First Market Bank where they reaffirm the statements made in the certificate furnished pursuant to subsection (e) of this Section.

(g) Accountant’s Comfort Letters. At the time of the execution of this Agreement, the Representative shall have received from (i) Yount, Hyde & Barbour, PC letters dated the respective dates of delivery thereof, in form and substance satisfactory to the Representative, together with signed or reproduced copies of such letter for each of the other Underwriters containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information of the Company contained or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus; and

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(ii) McGladrey & Pullen, LLP letters dated the respective dates of delivery thereof, in form and substance satisfactory to the Representative, together with signed or reproduced copies of such letter for each of the other Underwriters containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and certain financial information of First Market Bank contained or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus.

(h) Bring-down Comfort Letter. At the Closing Time, the Representative shall have received from each of Yount, Hyde & Barbour, PC and McGladrey & Pullen, LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letters furnished pursuant to subsection (e) of this Section, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(i) Approval of Listing. The Common Stock (including the Securities) is registered pursuant to Section 12(b) of the 1934 Act and is listed on The Nasdaq Global Select Market, and the Company has taken no action designed to, or likely to have the effect of, terminating the registration of the Common Stock under the 1934 Act or delisting the Common Stock from The Nasdaq Global Select Market, nor has the Company received any notification that the Commission or The Nasdaq Global Select Market is contemplating terminating such registration or listing

(j) No Objection. If required by the FINRA rules, FINRA shall have confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements.

(k) Lock-up Agreements. At the date of this Agreement, the Representative shall have received an agreement substantially in the form of Exhibit B hereto signed by the persons listed on Schedule D hereto.

(l) Delivery of Prospectus. The Company shall have complied with the provisions hereof with respect to the furnishing of prospectuses, in electronic or printed format, on the New York business day next succeeding the date of this Agreement.

(m) No Termination Event. On or after the date hereof, there shall not have occurred any of the events, circumstances or occurrences set forth in Section 9(a).

(n) Merger Agreement. At the Closing Time, the Merger Agreement shall not have been terminated by the Company and the Company shall not have received notice of termination by First Market Bank. At the Closing Time, the covenants and other agreements set forth in the Merger Agreement shall not have been breached by the Company and nothing shall come to the Company’s attention that caused it to believe that First Market Bank has breached the Merger Agreement in a manner such that either the Company or First Market Bank would have the right to terminate the Merger Agreement.

(o) Conditions to Purchase of Option Securities. In the event that the Underwriters exercise their option provided in Section 2(b) hereof to purchase all or any portion of the Option Securities, the representations and warranties of the Company contained herein and the statements in any certificates furnished by the Company and any Subsidiary of the Company hereunder shall be true and correct as of each Date of Delivery and, at the relevant Date of Delivery, the Representative shall have received:

(i) Officers’ Certificate. A certificate, dated such Date of Delivery, of the President of the Company and of the chief financial or chief accounting officer of the Company confirming that the certificate delivered at the Closing Time pursuant to Section 5(d) hereof remains true and correct as of such Date of Delivery.

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(ii) First Market Bank’s Officers’ Certificate. A certificate, dated such Date of Delivery, of the Chief Executive Officer of First Market Bank and of the Chief Financial Officer of First Market Bank confirming that the certificate delivered on the date hereof pursuant to Section 5(e) hereof remains true and correct as of such Date of Delivery.

(iii) Opinions of Counsel for Company. The favorable opinion of each of LeClairRyan, counsel for the Company, and Janis Orfe, Executive Vice President and General Counsel of the Company, in forms and substance satisfactory to counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinions required by Section 5(b) hereof.

(iv) Opinion of Counsel for Underwriters. The favorable opinion of Nelson Mullins Riley & Scarborough LLP, counsel for the Underwriters, dated such Date of Delivery, relating to the Option Securities to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 5(c) hereof.

(v) Bring-down Comfort Letter. A letter from each of Yount, Hyde & Barbour, PC and McGladrey & Pullen, LLP, each in the form and substance satisfactory to the Representative and dated such Date of Delivery, substantially in the same form and substance as the letters furnished to the Representative pursuant to Section 5(g) hereof, except that the “specified date” in the letters furnished pursuant to this paragraph shall be a date not more than five days prior to such Date of Delivery.

(vi) No Termination Event. There shall not have occurred prior to the Date of Delivery any of the events, circumstances or occurrences set forth in Section 9(a).

(p) Additional Documents. At the Closing Time and at each Date of Delivery, counsel for the Underwriters shall have been furnished with such documents and opinions as they may require for the purpose of enabling them to pass upon the issuance and sale of the Securities as herein contemplated, or in order to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, herein contained. All proceedings taken by the Company in connection with the issuance and sale of the Securities as herein contemplated shall be satisfactory in form and substance to the Representative and counsel for the Underwriters.

(q) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Securities on a Date of Delivery that is after the Closing Time, the obligations of the several Underwriters to purchase the relevant Option Securities, may be terminated by the Representative by notice to the Company at any time at or prior to the Closing Time or such Date of Delivery, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 and except that Sections 1, 6, 7 and 8 shall survive any such termination and remain in full force and effect.

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SECTION 6. Indemnification.

(a) Indemnification of Underwriters. The Company agrees to indemnify and hold harmless each Underwriter, its affiliates (as such term is defined in rule 501(b) under the 1933 Act) (“Affiliates”), its selling agents, and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act as follows:

(i) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, arising out of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), including the Rule 430B Information and the Rule 434 Information, if applicable, or the omission or alleged omission therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading or arising out of any untrue statement or alleged untrue statement of a material fact included in any preliminary prospectus, any Issuer-Represented Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto), or the omission or alleged omission therefrom of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading;

(ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission; provided that (subject to Section 6(d) below) any such settlement is effected with the written consent of the Company; and

(iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by Keefe Bruyette), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i), (ii) or (iii) above; provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through Keefe Bruyette expressly for use in the Registration Statement (or any amendment thereto), including the Rule 430B Information, or any preliminary prospectus, any Issuer-Represented Free Writing Prospectus, or the Prospectus (or any amendment or supplement thereto); provided that the parties acknowledge and agree that the only written information that the Underwriters have furnished to the Company specifically for inclusion in the Registration Statement, preliminary prospectus and Prospectus (or any amendment or supplement thereto) is in the first paragraph of text under the caption “Underwriting – Commissions and Discounts” and the information contained under the captions “Underwriting – Price Stabilization, Short Positions and Passive Market Making.”

(b) Indemnification of Company and Directors and Officers. Each Underwriter severally agrees to indemnify and hold harmless the Company, its directors, each of its officers who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in subsection (a) of this Section, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), including the Rule 430B Information and Rule 434 Information, if applicable, or any preliminary prospectus, or any Issuer-Represented Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto) in reliance upon and in

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conformity with written information furnished to the Company by such Underwriter through Keefe Bruyette expressly for use in the Registration Statement (or any amendment thereto) or such preliminary prospectus, or any Issuer-Represented Free Writing Prospectus or the Prospectus (or any amendment or supplement thereto); provided that the parties acknowledge and agree that the only written information that the Underwriters have furnished to the Company specifically for inclusion in the Registration Statement, preliminary prospectus, or any Issuer-Represented Free Writing Prospectus and Prospectus (or any amendment or supplement thereto) is in the first paragraph of text under the caption “Underwriting – Commissions and Discounts” and the information contained under the captions “Underwriting – Price Stabilization, Short Positions and Passive Market Making.”

(c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 6(a) above, counsel to the indemnified parties shall be selected by Keefe Bruyette, and, in the case of parties indemnified pursuant to Section 6(b) above, counsel to the indemnified parties shall be selected by the Company. An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the consent of the indemnified party) also be counsel to the indemnified party. In no event shall the indemnifying parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 6 or Section 7 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party.

(d) Settlement Without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a)(iii) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

SECTION 7. Contribution.

If the indemnification provided for in Section 6 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred,

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(i) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriters on the other hand from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company on the one hand and of the Underwriters on the other hand in connection with the statements or omissions, which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

The relative benefits received by the Company, on the one hand, and the Underwriters, on the other hand, in connection with the offering of the Securities pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Securities pursuant to this Agreement (before deducting expenses) received by the Company, on the one hand, and the total underwriting discount and commissions received by the Underwriters, on the other hand, in each case as set forth on the cover of the Prospectus.

The relative fault of the Company, on the one hand, and the Underwriters, on the other hand, shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or by the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 7. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 7 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any governmental agency or body, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

Notwithstanding the provisions of this Section 7, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of any such untrue or alleged untrue statement or omission or alleged omission.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each person, if any, who controls an Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act and each Underwriter’s Affiliates and selling agents shall have the same rights to contribution as such Underwriter, and each director of the Company, each officer of the Company who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Company. The Underwriters’ respective obligations to contribute pursuant to this Section 7 are several in proportion to the number of Initial Securities set forth opposite their respective names in Schedule A hereto and not joint and shall be subject to the limitation on aggregate liability set forth in the fifth paragraph of this Section 7.

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SECTION 8. Representations, Warranties and Agreements to Survive Delivery.

All representations, warranties and agreements contained in this Agreement or in certificates of officers of the Company or any of the Subsidiaries submitted pursuant hereto shall remain operative and in full force and effect, regardless of any (i) investigation made by or on behalf of any Underwriter or its Affiliates or selling agents, any person controlling any Underwriter, its officers or directors, or by or on behalf of the Company, and (ii) delivery of and payment for the Securities.

SECTION 9. Termination of Agreement.

(a) Termination; General. The Representative may terminate this Agreement, by notice to the Company, at any time at or prior to the Closing Time (i) if there has been, since the time of execution of this Agreement or since the respective dates as of which information is given in the preliminary prospectus, the General Disclosure Package or the Prospectus, any material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and the Subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, including without limitation as a result of terrorist activities, in each case the effect of which is such as to make it, in the judgment of the Representative, impracticable or inadvisable to market the Securities or to enforce contracts for the sale of the Securities, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission, The Nasdaq Global Select Market, or if trading generally on the New York Stock Exchange or The Nasdaq Global Select Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by such system or by order of the Commission, FINRA or any other governmental authority, or (iv) a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or with respect to Clearstream or Euroclear Systems in Europe, or (v) if a banking moratorium has been declared by either Federal or New York authorities.

(b) Liabilities. If this Agreement is terminated pursuant to this Section, such termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 1, 6, 7 and 8 shall survive such termination and remain in full force and effect.

SECTION 10. Default by One or More of the Underwriters.

If one or more of the Underwriters shall fail at the Closing Time or a Date of Delivery to purchase the Securities that it or they are obligated to purchase under this Agreement (the “Defaulted Securities”), the Representative shall have the right, within 24 hours thereafter, to make arrangements for one or more of the non-defaulting Underwriters, or any other underwriters, to purchase all, but not less than all, of the Defaulted Securities in such amounts as may be agreed upon and upon the terms herein set forth. If, however, the Representative shall not have completed such arrangements within such 24-hour period, then:

(a) if the number of Defaulted Securities does not exceed 10% of the number of Securities to be purchased on such date, each of the non-defaulting Underwriters shall be obligated, severally and not jointly, to purchase the full amount thereof in the proportions that their respective underwriting obligations hereunder bear to the underwriting obligations of all non-defaulting Underwriters, or

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(b) if the number of Defaulted Securities exceeds 10% of the number of Securities to be purchased on such date, this Agreement or, with respect to any Date of Delivery which occurs after the Closing Time, the obligation of the Underwriters to purchase and of the Company to sell the Option Securities to be purchased and sold on such Date of Delivery shall terminate without liability on the part of any non-defaulting Underwriter.

No action taken pursuant to this Section shall relieve any defaulting Underwriter from liability in respect of its default.

In the event of any such default that does not result in a termination of this Agreement or, in the case of a Date of Delivery that is after the Closing Time, that does not result in a termination of the obligation of the Underwriters to purchase and the Company to sell the relevant Option Securities, as the case may be, either (i) the Representative or (ii) the Company shall have the right to postpone the Closing Time or the relevant Date of Delivery, as the case may be, for a period not exceeding seven days in order to effect any required changes in the Registration Statement or Prospectus or in any other documents or arrangements. As used herein, the term “Underwriter” includes any person substituted for an Underwriter under this Section 10.

SECTION 11. Notices.

All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Underwriters shall be directed to the Representative at Keefe, Bruyette & Woods, Inc., 787 Seventh Avenue, 4^th Floor, New York, New York 10019, attention of Syndicate Desk. Notices to the Company shall be directed to it at Union Bankshares Corporation, 211 North Main Street, Post Office Box 446, Bowling Green, Virginia 22427, attention of Executive Vice President and General Counsel.

SECTION 12. Parties.

This Agreement shall each inure to the benefit of and be binding upon the Underwriters, the Company and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriters, the Company and their respective successors and the controlling persons and officers and directors referred to in Sections 6 and 7 and their heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriters, the Company and their respective successors, and said controlling persons and officers and directors and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Securities from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

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SECTION 13. No Fiduciaries.

The Company acknowledges and agrees that (i) the purchase and sale of the Securities pursuant to this Agreement, including the determination of the public offering price of the Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the several Underwriters, on the other hand, (ii) in connection with the offering contemplated hereby and the process leading to such transaction each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Company or its shareholders, creditors, employees or any other third party, (iii) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the Company with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company on other matters) and no Underwriter has any obligation to the Company with respect to the offering contemplated hereby except the obligations expressly set forth in this Agreement, (iv) the Underwriters and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company, and (v) the Underwriters have not provided any legal, accounting, regulatory or tax advice with respect to the offering contemplated hereby and the Company has consulted its own legal, accounting, regulatory and tax advisors to the extent it deemed appropriate.

SECTION 14. Governing Law and Time.

THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK. SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 15. General Provisions.

This Agreement constitutes the entire agreement of the parties to this Agreement and supersedes all prior written or oral and all contemporaneous oral agreements, understandings and negotiations with respect to the subject matter hereof. This Agreement may be executed in two or more counterparts, each one of which shall be an original, but all of which together shall constitute one and the same instrument. The exchange of copies of this Agreement and of signature pages by facsimile or other electronic means shall constitute effective execution and delivery of this Agreement by the parties hereto and may be used in lieu of the original signature pages to this Agreement for all purposes. This Agreement may not be amended or modified unless in writing by all of the parties hereto, and no condition herein (express or implied) may be waived unless waived in writing by each party whom the condition is meant to benefit. The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction hereof.

[Remainder of Page Intentionally Left Blank]

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If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement among the Underwriters, the Company in accordance with its terms.

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SCHEDULE A

Schedule A - 1

SCHEDULE B

Issuer-Represented General Free Writing Prospectus

Schedule B - 1

SCHEDULE C

List of Subsidiaries of Union Bankshares Corporation (Direct or Indirect)

Schedule C - 1

SCHEDULE D

Lock-Up Agreements

G. William Beale

Douglas E. Caton

Daniel I. Hanson

Ronald L. Hicks

Patrick J. McCann

Hullihen W. Moore

R. Hunter Morin

W. Tayloe Murphy, Jr.

Ronald L. Tillett

A.D. Whittaker

John C. Neal

D. Anthony Peay

Elizabeth M. Bentley

Rex A. Hockemeyer

Schedule D - 1

SCHEDULE E

Price Per Share

1. The public offering price per share for the Securities, determined as provided in Section 2 of this Agreement, shall be $13.25.

2. The purchase price per share for the Securities to be paid by the several Underwriters shall be $12.52125, being an amount equal to the public offering price set forth above less $.72875 per share; provided that the purchase price per share for any Option Securities purchased upon the exercise of the over-allotment option described in Section 2(b) shall be reduced by an amount per share equal to any dividends or distributions declared by the Company and payable on the Initial Securities, but not payable on the Option Securities.

Schedule E - 1

EXHIBIT A

FORM OF OPINION OF COMPANY’S COUNSEL TO BE DELIVERED PURSUANT TO SECTION 5(b)

(i) The Company is a registered bank holding company under the Bank Holding Company Act of 1956, as amended, and has been duly incorporated and is validly existing as a corporation in good standing under the laws of the Commonwealth of Virginia. The activities of each of the Company’s direct and indirect Subsidiaries are permissible for subsidiaries of a bank holding company.

(ii) The Company has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and to enter into and perform its obligations under the Underwriting Agreement and the Merger Agreement.

(iii) The Company is duly qualified as a foreign corporation to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect.

(iv) The authorized, issued and outstanding capital stock of the Company is as set forth in the Prospectus in the column entitled “Actual” under the caption “Capitalization” (except for subsequent issuances, if any, pursuant to the Underwriting Agreement or pursuant to reservations, agreements or employee benefit plans referred to in the Prospectus or pursuant to the exercise of convertible securities or options referred to in the Prospectus). The shares of issued and outstanding capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable; and none of the outstanding shares of capital stock of the Company was issued in violation of the preemptive or other similar rights of any securityholder of the Company.

(v) The Securities to be purchased by the Underwriters from the Company have been duly authorized for issuance and sale to the Underwriters pursuant to the Underwriting Agreement and, when issued and delivered by the Company pursuant to the Underwriting Agreement against payment of the consideration set forth in the Underwriting Agreement, will be validly issued and fully paid and non-assessable and no holder of the Securities is or will be subject to personal liability by reason of being such a holder.

(vi) The issuance and sale of the Securities by the Company is not subject to the preemptive or other similar rights of any securityholder of the Company.

(vii) Each Subsidiary has been duly incorporated and is validly existing as a corporation, bank, trust or limited liability company [other] in good standing under the laws of the jurisdiction of its organization, has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and is duly qualified as a foreign corporation to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect; except as otherwise disclosed in the Registration Statement, all of the issued and outstanding capital stock, membership interests [other] of each Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable and, to the best of our knowledge, is owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity; none of the outstanding shares of capital stock of any Subsidiary was issued in violation of the preemptive or similar rights of any securityholder of such Subsidiary.

Exhibit A-1

(viii) The Underwriting Agreement has been duly authorized, executed and delivered by the Company.

(ix) The Merger Agreement has been duly authorized, executed and delivered by the Company and First Market Bank.

(x) The Registration Statement, including any Rule 462(b) Registration Statement, has been declared effective under the 1933 Act; any required filing of the Prospectus pursuant to Rule 424(b) has been made in the manner and within the time period required by Rule 424(b); and, to the best of our knowledge, no stop order suspending the effectiveness of the Registration Statement or any Rule 462(b) Registration Statement has been issued under the 1933 Act and no proceedings for that purpose have been instituted or are pending or threatened by the Commission.

(xi) The Registration Statement, including any Rule 462(b) Registration Statement, the Rule 430B Information, the Preliminary Prospectus, the Prospectus, and each amendment or supplement to the Registration Statement and Prospectus, excluding the documents incorporated by reference therein, as of their respective effective or issue dates (other than the financial statements and supporting schedules included therein or omitted therefrom, as to which we need express no opinion) complied as to form in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations.

(xii) The documents incorporated by reference in the Prospectus (other than the financial statements and supporting schedules included therein or omitted therefrom, as to which we need express no opinion), when they became effective or were filed with the Commission, as the case may be, complied as to form in all material respects with the requirements of the 1933 Act or the 1934 Act, as applicable, and the rules and regulations of the Commission thereunder.

(xiii) The form of certificate used to evidence the Common Stock complies in all material respects with all applicable statutory requirements, with any applicable requirements of the charter and bylaws of the Company and the requirements of The Nasdaq Global Select Market.

(xiv) The Securities have been validly registered under the 1933 Act and the 1934 Act.

(xv) To the best of our knowledge, there is not pending or threatened any action, suit, proceeding, inquiry or investigation, to which the Company or any subsidiary is a party, or to which the property of the Company or any subsidiary is subject, before or brought by any court or governmental agency or body, domestic or foreign, which might reasonably be expected to result in a Material Adverse Effect, or which might reasonably be expected to materially and adversely affect the properties or assets thereof or the consummation of the transactions contemplated in the Underwriting Agreement or the Merger Agreement or the performance by the Company of its obligations thereunder.

(xvi) The information (i) in the Prospectus under “Description of Capital Stock–Common Stock,” “Business–Property,” “Business–Supervision and Regulation,” “Certain Relationships and Related Transactions,” “Shares Eligible for Future Sale,” “Underwriting,” “Description of Capital Stock–Preferred Stock,” and “Certain Federal Income Tax Considerations” and (ii) in the Registration Statement under Item 15, to the extent that it constitutes matters of law, summaries of legal matters, the Company’s charter and bylaws or legal proceedings, or legal conclusions, has been reviewed by us and is correct in all material respects.

Exhibit A-2

(xvii) To the best of our knowledge, there are no statutes or regulations that are required to be described in the Prospectus that are not described as required.

(xviii) All descriptions in the Registration Statement of contracts and other documents, including the Merger Agreement, to which the Company or its subsidiaries are a party are accurate in all material respects; to the best of our knowledge, there are no franchises, contracts, indentures, mortgages, loan agreements, notes, leases or other instruments required to be described or referred to in the Registration Statement or to be filed as exhibits thereto other than those described or referred to therein or filed or incorporated by reference as exhibits thereto, and the descriptions thereof or references thereto are correct in all material respects.

(xix) To the best of our knowledge, neither the Company nor any subsidiary is in violation of its charter or bylaws and no default by the Company or any subsidiary exists in the due performance or observance of any material obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, loan agreement, note, lease or other agreement or instrument that is described or referred to in the Registration Statement or the Prospectus or filed or incorporated by reference as an exhibit to the Registration Statement.

(xx) No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency, domestic or foreign (other than under the 1933 Act and the 1933 Act Regulations, which have been obtained, or as may be required under the securities or blue sky laws of the various states, as to which we need express no opinion) is necessary or required in connection with the due authorization, execution and delivery of the Underwriting Agreement or for the offering, issuance, sale or delivery of the Securities.

(xxi) The execution, delivery and performance of the Underwriting Agreement and the consummation of the transactions contemplated in the Underwriting Agreement and in the Registration Statement (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described in the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations under the Underwriting Agreement do not and will not, whether with or without the giving of notice or lapse of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined in Section 1(a)(xi) of the Underwriting Agreement) under or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any subsidiary pursuant to any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or any other agreement or instrument, known to us, to which the Company or any subsidiary is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any subsidiary is subject (except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not have a Material Adverse Effect), nor will such action result in any violation of the provisions of the charter or by-laws of the Company or any subsidiary, or any applicable law, statute, rule, regulation, judgment, order, writ or decree, known to us, of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any subsidiary or any of their respective properties, assets or operations.

(xxii) The execution, delivery and performance of the Merger Agreement and the consummation of the transactions contemplated in the Merger Agreement and compliance by the Company with its obligations under the Merger Agreement do not and will not, whether with or without

Exhibit A-3

the giving of notice or lapse of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined in Section 1(a)(xi) of the Underwriting Agreement) under or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any subsidiary pursuant to any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or any other agreement or instrument, known to us, to which the Company or any subsidiary is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any subsidiary is subject (except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not have a Material Adverse Effect), nor will such action result in any violation of the provisions of the charter or by-laws of the Company or any subsidiary, or any applicable law, statute, rule, regulation, judgment, order, writ or decree, known to us, of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any subsidiary or any of their respective properties, assets or operations.

(xxiii) The Company is not an “investment company” or an entity “controlled” by an “investment company,” as such terms are defined in the 1940 Act.

(xxiv) To our knowledge, there are no persons with registration or other similar rights to have any equity or debt securities, including securities that are convertible into or exchangeable for equity securities, registered pursuant to the Registration Statement or otherwise registered by the Company under the 1933 Act.

(xxv) To our knowledge, neither the Company nor any of the Subsidiaries is a party to or subject to any order, decree, agreement, memorandum of understanding or similar arrangement with, or a commitment letter, supervisory letter or similar submission to, any governmental entity charged with the supervision or regulation of depository institutions or engaged in the insurance of deposits (including the FDIC) or the supervision or regulation of the Company or any of the Subsidiaries, and neither the Company nor any of the Subsidiaries has been advised by any such governmental entity that such governmental entity is contemplating issuing or requesting (or is considering the appropriateness of issuing or requesting) any such order, decree, agreement, memorandum or understanding, commitment letter, supervisory letter or similar submission.

With respect to the Sarbanes-Oxley Act of 2002:

(A) The Company has adopted a Code of Ethics and Code of Conduct for senior financial officers meeting the requirements of 17 CFR Part 228.406 and an audit committee charter meeting the requirement of Rule 5605(c)(1) of the Nasdaq Marketplace Rules;

(B) The Company’s Board of Directors has determined that a majority of its members and all of the members of its compensation and audit committees are independent under applicable Nasdaq Marketplace Rules, and, based solely on our review of written representations furnished by such directors, to our knowledge, no independent director of the Company has any relationship prohibited under Rule 5605(a)(2)(A) through (G) of the Nasdaq Marketplace Rules and no audit committee member has any relationship prohibited under Rule 5605(c)(2) of the Nasdaq Marketplace Rules;

(C) The Company’s Board of Directors has adopted a policy regarding the nominations process pursuant to Rule 5605(e)(2) of the Nasdaq Marketplace Rules that provides for the nomination of directors in accordance with such rules; and

Exhibit A-4

(D) The certifications pursuant to Sections 302 and 906 of the Sarbanes-Oxley Act of 2002 contained in the Company’s periodic reports filed with the Commission since August 14, 2002 complied as to form in all material respects with the requirements of the Sarbanes-Oxley Act of 2002 and the Commission’s regulations promulgated thereunder; provided, however, that we do not give any opinion as the accuracy of the content of such certifications.

(xxvi) To our knowledge, neither the Company nor any of the Subsidiaries has received any communication within the last twelve months from any governmental entity asserting that the Company or any of the Subsidiaries is not in compliance with any statute, law, rule, regulation, decision, directive or order.

Nothing has come to our attention that would lead us to believe that the Registration Statement or any amendment thereto, including the Rule 430B Information, (except for financial statements and schedules and other financial data included or incorporated by reference therein or omitted therefrom, as to which we need make no statement), at the time such Registration Statement or any such amendment became effective, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein not misleading or that the Prospectus or any amendment or supplement thereto (except for financial statements and schedules and other financial data included or incorporated by reference therein or omitted therefrom, as to which we need make no statement), at the time the Prospectus was issued, at the time any such amended or supplemented prospectus was issued or at the Closing Time, included or includes an untrue statement of a material fact or omitted or omits to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

Furthermore, we have no reason to believe that the documents specified in the General Disclosure Package, as of the Applicable Time and as of the Closing Date, contained any untrue statement of a material fact or omitted to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading.

In rendering such opinion, such counsel may rely, as to matters of fact (but not as to legal conclusions), to the extent they deem proper, on certificates of responsible officers of the Company and public officials. Such opinion shall not state that it is to be governed or qualified by, or that it is otherwise subject to, any treatise, written policy or other document relating to legal opinions, including, without limitation, the Legal Opinion Accord of the ABA Section of Business Law (1991).

Exhibit A-5

EXHIBIT B

FORM OF LOCK-UP AGREEMENT TO BE DELIVERED PURSUANT TO SECTION 5(k)

[—], 2009

KEEFE, BRUYETTE & WOODS, INC.

as Representative of the several Underwriters

to be named in the Underwriting Agreement

787 Seventh Avenue, 4^th Floor

New York, New York 10019

Ladies and Gentlemen:

The undersigned, a shareholder and an executive officer and/or director of Union Bankshares Corporation, a Virginia corporation (the “Company”), understands that Keefe, Bruyette & Woods, Inc. (“Keefe Bruyette”), as representative of the several underwriters (the “Underwriters”) to be named in the Underwriting Agreement, proposes to enter into an Underwriting Agreement (the “Underwriting Agreement”) with the Company providing for the public offering of shares (the “Securities”) of the Company’s common stock, $1.33 par value per share (the “Common Stock”). In recognition of the benefit that such an offering will confer upon the undersigned as a shareholder and an executive officer and/or director of the Company, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned agrees with each underwriter to be named in the Underwriting Agreement that, during a period of ninety (90) days from the date of the Underwriting Agreement, the undersigned will not, without the prior written consent of Keefe Bruyette, directly or indirectly, (i) offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, or otherwise dispose of or transfer any shares of the Company’s Common Stock or any securities convertible into or exchangeable or exercisable for Common Stock, whether now owned or hereafter acquired by the undersigned or with respect to which the undersigned has or hereafter acquires the power of disposition, or file any registration statement under the Securities Act of 1933, as amended, with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Common Stock, whether any such swap or transaction is to be settled by delivery of Common Stock or other securities, in cash or otherwise. In the event that either (i) during the period that begins on the date that is fifteen (15) calendar days plus three (3) business days before the last day of the ninety (90) day restricted period and ends on the last day of the ninety (90) day restricted period, the Company issues an earnings release or material news or a material event relating to the Company occurs, or (ii) prior to the expiration of the ninety (90) day restricted period, the Company announces that it will release earnings results during the sixteen (16) day period beginning on the last day of the ninety (90) day restricted period, the restrictions set forth herein will continue to apply until the expiration of the date that is fifteen (15) calendar days plus three (3) business days after the date on which the earnings release is issued or the material news or event related to the Company occurs. The Company shall promptly notify Keefe Bruyette of any earnings releases, news or events that may give rise to an extension of the initial restricted period.

Notwithstanding the foregoing, the undersigned may transfer the undersigned’s shares of Common Stock (i) as a bona fide gift or gifts, provided that the donee or donees agree to be bound in

Exhibit B-1

writing by the restrictions set forth herein, (ii) to any trust or family limited partnership for the direct or indirect benefit of the undersigned or the immediate family of the undersigned, provided that the trustee of the trust or general partner of the family limited partnership, as the case may be, agrees to be bound by the restrictions set forth herein, and provided further that any such transfer shall not involve a disposition for value, (iii) pledged in a bona fide transaction outstanding as of the date hereof to a lender to the undersigned, as disclosed in writing to the Underwriters, (iv) pursuant to the exercise by the undersigned of stock options that have been granted by the Company prior to, and are outstanding as of, the date of the Underwriting Agreement, where the Common Stock received upon any such exercise is held by the undersigned, individually or as fiduciary, in accordance with the terms of this Lock-Up Agreement, or (v) with the prior written consent of the Underwriters. For purposes of this Lock-Up Agreement, “immediate family” shall mean any relationship by blood, marriage or adoption, not more remote than first cousin.

The undersigned now has and for the duration of the Lock-Up Agreement will have good and marketable title to the undersigned’s shares of Common Stock, free and clear of all liens, encumbrances, and claims whatsoever, except with respect to any liens, encumbrances and claims that were in existence on the date hereof. The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of the undersigned’s common stock, except in compliance with this Lock-Up Agreement. In furtherance of the foregoing, the Company and its transfer agent are hereby authorized to decline to make any transfer of securities if such transfer would constitute a violation or breach of this Lock-Up Agreement.

The undersigned represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Agreement. The undersigned agrees that the provisions of this Lock-Up Agreement shall be binding also upon the successors, assigns, heirs and personal representatives of the undersigned.

The undersigned understands that, if the Underwriting Agreement does not become effective, or if the Underwriting Agreement (other than the provisions thereof which survive termination) shall terminate or be terminated prior to payment for and delivery of the Common Stock to be sold thereunder, the undersigned shall be released from all obligations under this Lock-up Agreement.

This Lock-up Agreement shall be governed by and construed in accordance with the laws of the State of New York.

Exhibit B-2

EXHIBIT C

FIRST MARKET BANK, FSB OFFICERS’ CERTIFICATE

Officers’ Certificate

David J. Fairchild, the Chief Executive Officer of First Market Bank, FSB, a federal savings bank (“First Market”), and Ray A. Fleming, the Chief Financial Officer of First Market, pursuant to Section 5(e) of the underwriting agreement, dated September 10, 2009 (the “Underwriting Agreement”), between Union Bankshares Corporation (“Union”) and Keefe, Bruyette & Woods, Inc., as representative of the several underwriters named therein, do hereby certify as follows:

1. The historical information relating to First Market included, incorporated or deemed to be incorporated by reference into the Registration Statement, the General Disclosure Package or the Prospectus, as the case may be, (i) at the earlier of the time the Prospectus was first used and the date and time of the first contract of sale of the Securities and (ii) at the date hereof, did not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading.

2. To their knowledge (as defined in the Merger Agreement), McGladrey & Pullen, LLP the accounting firm that certified the 2008, 2007 and 2006 financial statements and supporting schedules included, incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, is an independent registered public accounting firm with respect to First Market as required by the 1933 Act and the 1933 Act Regulations.

3. The historical financial statements of First Market included, incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules and notes, present fairly the financial position of First Market and its consolidated subsidiaries at the dates indicated and the statement of operations, stockholders’ equity and cash flows of First Market and its consolidated subsidiaries for the periods specified. Such financial statements have been prepared in conformity with GAAP applied on a consistent basis as of the respective dates and for the periods indicated, except in each case as may be noted therein and subject in the case of unaudited interim financial statements, to normal year-end adjustments. The supporting schedules of First Market, if any, included, incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in accordance with GAAP the information required to be stated therein. The portions of the selected historical financial data and the portions of the summary historical financial information, in each case, related to the First Market financial statements and schedules, included, incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent in all material respects with that of the audited financial statements included, incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus.

Exhibit C-1

4. Since the respective dates as of which information is included, incorporated or deemed incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus, except as otherwise stated in the Registration Statement, the General Disclosure Package and the Prospectus, (A) there has been no Material Adverse Effect as to First Market (as defined in the Merger Agreement) (a “First Market Material Adverse Effect”), (B) there have been no transactions entered into by First Market or any of its subsidiaries, other than those in the ordinary course of business or permitted by the Merger Agreement, which are material with respect to First Market and its subsidiaries considered as one enterprise, and (C) there has been no dividend or distribution of any kind declared, paid or made by First Market on any class of its capital stock, except for dividends on First Market’s Series A, Series B and Series C Preferred Stock.

5. The Merger Agreement has been duly authorized (subject to approval by First Market’s shareholders), executed and delivered by First Market and constitutes a valid and legally binding agreement of First Market, enforceable in accordance with its terms, except as enforcement thereof may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting creditors’ rights generally or by general equitable principles. Except as disclosed in the Disclosure Letter delivered by First Market pursuant to the Merger Agreement (the “First Market Disclosure Letter”), compliance by First Market with its obligations under the Merger Agreement will not conflict with or constitute a breach of, or default under or give rise to, any right of termination, cancellation or acceleration with respect to, or result in a lien, charge or encumbrance upon any property or assets of First Market or any of its subsidiaries pursuant to, (i) any indenture, mortgage, deed of trust, loan agreement or note, or any other material agreement or instrument to which First Market or any of its subsidiaries is a party or by which First Market or any of its subsidiaries is bound or to which any of the property or assets of First Market or any of its subsidiaries is subject, (ii) the provisions of the charter, bylaws or other organizational documents of First Market or any of its subsidiaries or (iii) subject to the receipt of all required regulatory and shareholder approvals, any statute or any order, rule or regulation of any governmental entity having jurisdiction over First Market or any of its subsidiaries or any of their property, assets or operations.

6. Neither First Market nor any of its subsidiaries is a party to or subject to any order, decree, agreement, memorandum of understanding or similar agreement or other regulatory enforcement action, proceeding or order with or by, or is a party to or recipient of a commitment letter, supervisory letter or similar undertaking to or from, or is subject to any directive by, any governmental entity charged with the supervision or regulation of First Market or its subsidiaries (including the Office of Thrift Supervision and the FDIC), and neither First Market nor any of its subsidiaries has been advised by any such governmental entity that such governmental entity is contemplating issuing or requesting (or is considering the appropriateness of issuing or requesting) any such order, decree, agreement, memorandum of understanding, commitment letter, supervisory letter or similar submission, except as would not singly or in the aggregate result in a First Market Material Adverse Effect.

Exhibit C-2

7. Except as set forth in the First Market Disclosure Letter, there is no action, suit, proceeding, inquiry or investigation before or brought by any court, or governmental agency or body, domestic or foreign now pending, or, to the knowledge of First Market, threatened, against or affecting First Market or any of its subsidiaries, which would, singly or in the aggregate, result in a First Market Material Adverse Effect.

Capitalized terms used and not defined herein shall have the meanings ascribed to such terms in the Underwriting Agreement.

In Witness Whereof, the undersigned have executed this certificate as of this 10th day of September, 2009.

Exhibit C-3