AGREEMENT AND PLAN OF REORGANIZATION dated as of December 15, 2010 by and between UNITED BANKSHARES, INC. and CENTRA FINANCIAL HOLDINGS, INC.

EXHIBIT 2.1

AGREEMENT AND PLAN OF REORGANIZATION

dated as of December 15, 2010

by and between

UNITED BANKSHARES, INC.

and

CENTRA FINANCIAL HOLDINGS, INC.

Table of Contents


			Page

ARTICLE I Certain Definitions				1
	1.01	Certain Definitions		1
ARTICLE II The Merger				6
	2.01	The Merger		6
	2.02	Effective Date and Effective Time		7
ARTICLE III The Bank Merger				7
	3.01	The Bank Merger		7
	3.02	Effective Date and Effective Time		8
ARTICLE IV Consideration; Exchange Procedures				8
	4.01	Merger Consideration		8
	4.02	Rights as Stockholders; Stock Transfers		8
	4.03	Fractional Shares		8
	4.04	Exchange Procedures		9
	4.05	Anti-Dilution Provisions		10
	4.06	Options		10
	4.07	Dissenters’ Rights		10
ARTICLE V Actions Pending the Effective Time				11
	5.01	Forebearances of Centra		11
	5.02	Forebearances of United		13
ARTICLE VI Representations and Warranties				14
	6.01	Disclosure Schedules		14
	6.02	Standard		14
	6.03	Representations and Warranties of Centra		14
	6.04	Representations and Warranties of United		24
ARTICLE VII Covenants				33
	7.01	Reasonable Best Efforts		33
	7.02	Stockholder Approvals		33
	7.03	Registration Statement		34
	7.04	Press Releases		35
	7.05	Access; Information		35
	7.06	Acquisition Proposals		36
	7.07	Takeover Laws		36
	7.08	Exemption from Liability Under Section 16(b)		36
	7.09	Regulatory Applications		37
	7.10	Indemnification		38
	7.11	Benefit Plans		39
	7.12	Notification of Certain Matters		40
	7.13	Directors and Officers		40
	7.14	Compliance with Laws		40
ARTICLE VIII Conditions to Consummation of the Merger				40
	8.01	Conditions to Each Party’s Obligation to Effect the Merger		40
	8.02	Conditions to Obligation of Centra		41
	8.03	Conditions to Obligation of United		42

Table of Contents

(continued)


			Page

ARTICLE IX Termination				42
	9.01	Termination		42
	9.02	Effect of Termination and Abandonment		45
	9.03	Fees and Expenses		45
ARTICLE X Miscellaneous				45
	10.01	Survival		45
	10.02	Waiver; Amendment		46
	10.03	Assignment		46
	10.04	Counterparts		46
	10.05	Governing Law		46
	10.06	Expenses		46
	10.07	Notices		46
	10.08	Entire Understanding; No Third Party Beneficiaries		47
	10.09	Severability		47
	10.10	Disclosures		48
	10.11	Interpretation; Effect		48
	10.12	Publicity		48

AGREEMENT AND PLAN OF REORGANIZATION, dated as of December 15, 2010, (this “Agreement”), by and between CENTRA FINANCIAL HOLDINGS, INC. (“Centra”) and UNITED BANKSHARES, INC. (“United”).

RECITALS

A. Centra. Centra is a West Virginia corporation, having its principal place of business in Morgantown, West Virginia.

B. United. United is a West Virginia corporation, having its principal place of business in Charleston, West Virginia.

C. Intentions of the Parties. It is the intention of the parties to this Agreement that the business combination contemplated hereby be treated as a “reorganization” under Section 368 of the Internal Revenue Code of 1986 (the “Code”).

D. Board Action. The respective Boards of Directors of each of United and Centra have determined that it is in the best interests of their respective companies and their stockholders to consummate the strategic business combination transaction provided for herein.

NOW, THEREFORE, in consideration of the premises and of the mutual covenants, representations, warranties and agreements contained herein the parties agree as follows:

ARTICLE I

Certain Definitions

1.01 Certain Definitions. The following terms are used in this Agreement with the meanings set forth below:

“Acquisition Agreement” has the meaning set forth in Section 9.03(a).

“Acquisition Proposal” means any tender or exchange offer, proposal for a merger, consolidation or other business combination involving Centra or any of its Significant Subsidiaries or any proposal or offer to acquire equity interests representing 24.99% or more of the voting power of, or at least 24.99% of the assets or deposits of, Centra or any of its Significant Subsidiaries, other than the transactions contemplated by this Agreement.

“Agreement” has the meaning set forth in the preamble to this Agreement.

“Average Closing Price” has the meaning set forth in Section 4.03.

“Bank Merger” has the meaning set forth in Section 3.01(a).

“Bank Merger Effective Date” has the meaning set forth in Section 3.02.

“Book Entry Shares” has the meaning set forth in Section 4.04.

“Centra” has the meaning set forth in the preamble to this Agreement.

“Centra Bank” means Centra Bank, Inc., a commercial bank chartered under the laws of the State of West Virginia and a wholly owned indirect subsidiary of Centra.

“Centra Board” means the Board of Directors of Centra.

“Centra By-Laws” means the By-laws of Centra.

“Centra Certificate” means the Amended and Restated Articles of Incorporation of Centra.

“Centra Common Stock” means the common stock, par value $1.00 per share, of Centra.

“Centra Meeting” has the meaning set forth in Section 7.02.

“Centra Stock Options” has the meaning set forth in Section 4.06.

“Centra Stock Plans” has the meaning set forth in Section 4.06.

“Centra Preferred Stock” means the preferred stock of Centra, par value of $1.00 per share.

“Centra’s SEC Documents” has the meaning set forth in Section 6.03(g).

“Code” means the Internal Revenue Code of 1986, as amended.

“Compensation and Benefit Plans” has the meaning set forth in Section 6.03(m).

“Consultants” has the meaning set forth in Section 6.03(m).

“Costs” has the meaning set forth in Section 7.10(a).

“Determination Date” has the meaning set forth in Section 4.03.

“Directors” has the meaning set forth in Section 6.03(m).

“Disclosure Schedule” has the meaning set forth in Section 6.01.

“Dissenters’ Shares” has the meaning set forth in Section 4.07.

“DOL” means the United States Department of Labor.

“Effective Date” has the meaning set forth in Section 2.02(a).

“Effective Time” means the effective time of the Merger, as provided for in Section 2.02(a).

“Employees” has the meaning set forth in Section 6.03(m).

“Environmental Laws” means all applicable local, state and federal environmental, health and safety laws and regulations, including, without limitation, the Resource Conservation and Recovery Act, the Comprehensive Environmental Response, Compensation, and Liability Act, the Clean Water Act, the Federal Clean Air Act, and the Occupational Safety and Health Act, each as amended, regulations promulgated thereunder, and state counterparts.

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended.

“ERISA Affiliate” has the meaning set forth in Section 6.03(m)(iii).

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder.

“Exchange Agent” means BNY Shareholder Services.

“Exchange Fund” has the meaning set forth in Section 4.04(a).

“Exchange Ratio” has the meaning set forth in Section 4.01(a).

“Fee” has the meaning set forth in Section 9.03(a).

“Final Index Price” has the meaning set forth in 9.01(i)(ii).

“GAAP” means United States generally accepted accounting principles as in effect from time to time, consistently applied.

“Governmental Authority” means any court, administrative agency or commission or other federal, state or local governmental authority or instrumentality.

“IRS” has the meaning set forth in Section 6.03(m)(ii).

“Indemnified Party” has the meaning set forth in Section 7.10(a).

“Index Group” has the meaning set forth in Section 9.01(i)(ii).

“Index Price” has the meaning set forth in Section 9.01(i)(ii).

“Index Ratio” has the meaning set forth in Section 9.01(i)(ii)

“Insurance Amount” has the meaning set forth in Section 7.10(b).

“Lien” means any charge, mortgage, pledge, security interest, restriction, claim, lien, or encumbrance.

“Material Adverse Effect” means, with respect to United or Centra, any event, change, effect, development, state of facts, condition, circumstances or occurrence that, individually or in the aggregate, (i) is material and adverse to the financial position, results of operations or business of United and its Subsidiaries taken as a whole or Centra and its Subsidiaries taken as a whole, respectively, or (ii) would materially impair the ability of either United or Centra to perform its obligations under this Agreement or otherwise materially threaten or materially impede the consummation of the Merger and the other transactions contemplated by this Agreement; provided, that Material Adverse Effect shall not be deemed to include the impact of (a) changes in tax, banking and similar laws of general applicability or interpretations thereof by courts or governmental authorities except to the extent that such changes have a disproportionate impact on United or Centra, as the case may be, relative to the overall effects on the banking industry, (b) changes in GAAP or regulatory accounting requirements applicable to banks and their holding companies generally, except to the extent that such changes have a disproportionate impact on United or Centra, as the case may be, relative to the overall effects on the banking industry, (c) changes in economic conditions affecting financial institutions generally, including changes in market interest rates, credit availability and liquidity, and price levels or trading volumes in securities markets except to the extent that such changes have a disproportionate impact on United or Centra, as the case may be, relative to the overall effects on the banking industry, (d) any modifications or changes to valuation policies and practices in connection with the Merger in accordance with GAAP, (e) actions and omissions of United or Centra taken with the prior written consent of the other in contemplation of the transactions contemplated hereby, (f) any outbreak or escalation of hostilities or war (whether or not declared) or any act of terrorism, or any earthquakes, hurricanes, tornados or

other natural disasters, (g) failure of United or Centra to meet any internal financial forecasts or any earnings projections (whether made by United or Centra or any other Person), (h) the public disclosure of this Agreement and the impact thereof on relationships with customers or employees, or (i) the effects of compliance with this Agreement on the operating performance of the parties, including, expenses incurred by the parties in consummating the transactions contemplated by this Agreement. For the avoidance of doubt, Centra and United hereby agree that if Centra is unable to make the representations and warranties contained in Section 6.03(m)(xi) as of the Effective Date, it will be deemed to have a Material Adverse Effect on the parties’ ability to consummate the Merger and the other transactions contemplated by this Agreement.

“Merger” has the meaning set forth in Section 2.01(b).

“Merger Consideration” has the meaning set forth in Section 4.01(a).

“Merger Sub” means UBC Holding Company, Inc., a West Virginia corporation and wholly-owned subsidiary of United, and/or one or more other corporations or limited liability companies to be organized under the laws of the State of West Virginia by United prior to the Effective Time.

“NASDAQ” means as The NASDAQ Stock Market, Inc.’s Global Select Market.

“New Certificate” has the meaning set forth in Section 4.04(a).

“Old Certificate” has the meaning set forth in Section 4.04(a).

“PBGC” means the Pension Benefit Guaranty Corporation.

“Pension Plan” has the meaning set forth in Section 6.03(m)(ii).

“Person” means any individual, bank, corporation, limited liability company, partnership, association, joint-stock company, business trust or unincorporated organization.

“Previously Disclosed” by a party shall mean information set forth in its Disclosure Schedule or in its SEC Documents.

“Proxy Statement” has the meaning set forth in Section 7.03(a).

“Registration Statement” has the meaning set forth in Section 7.03(a).

“Regulatory Authorities” has the meaning set forth in Section 6.03(i).

“Rights” means, with respect to any Person, securities, agreements, plans (including any employee stock purchase plans, dividend reinvestment plans or other equity plans) or obligations convertible into or exercisable or exchangeable for, or giving any Person any right to subscribe for or acquire, or any options, calls or commitments relating to, or any stock appreciation right or other instrument the value of which is determined in whole or in part by reference to the market price or value of, shares of capital stock of such Person.

“SEC” means the Securities and Exchange Commission.

“SEC Documents” means any registration statement, prospectus, report, schedule and definitive proxy statement and other documents filed with or furnished to the SEC by United or Centra or any of their Subsidiaries pursuant to the Securities Act or Exchange Act.

“Secretary of State” means the Secretary of State of the State of West Virginia.

“Securities Act” means the Securities Act of 1933, as amended, and the rules and regulations thereunder.

“Starting Date” has the meaning set forth in Section 9.01(i)(ii).

“Starting Price” has the meaning set forth in Section 9.01(i)(ii).

“Stock Option Consideration” has the meaning set forth in Section 4.06.

“Subsidiary” and “Significant Subsidiary” have the meanings ascribed to them in Rule 1-02 Section 210.1-(2)(w) of Regulation S-X of the SEC.

“Superior Proposal” has the meaning set forth in Section 9.01(h).

“Surviving Corporation” has the meaning set forth in Section 2.01(b).

“Takeover Laws” has the meaning set forth in Section 6.03(o).

“Tax” and “Taxes” means all federal, state, local or foreign taxes, charges, fees, levies or other assessments, however denominated, including, without limitation, all net income, gross income, gains, gross receipts, sales, use, ad valorem, goods and services, capital, production, transfer, franchise, windfall profits, license, withholding, payroll, employment, disability, employer health, excise, estimated, severance, stamp, occupation, property, environmental, unemployment or other taxes, custom duties, fees, assessments or charges of any kind whatsoever, together with any interest and any penalties, additions to tax or additional amounts imposed by any taxing authority.

“Tax Returns” means any return, amended return or other report (including elections, declarations, disclosures, schedules, estimates and information returns) required to be filed with respect to any Tax.

“Treasury Stock” shall mean shares of Centra Common Stock held by Centra or any of its Subsidiaries in each case other than in a fiduciary capacity or as a result of debts previously contracted in good faith.

“United” has the meaning set forth in the preamble to this Agreement.

“United Bank” means United Bank, Inc., a commercial bank chartered under the laws of the State of West Virginia.

“United Board” means the Board of Directors of United.

“United Common Stock” means the common stock, par value $2.50 per share, of United.

“United Compensation and Benefit Plans” has the meaning set forth in Section 6.04(k)(i).

“United Consultants” has the meaning set forth in Section 6.04(k)(i).

“United Directors” has the meaning set forth in Section 6.04(k)(i).

“United Employees” has the meaning set forth in Section 6.04(k)(i).

“United ERISA Affiliate” has the meaning set forth in Section 6.04(k)(iii).

“United ERISA Affiliate Plan” has the meaning set forth in Section 6.04(k)(iii).

“United Pension Plan” has the meaning set forth in Section 6.04(k)(ii).

“United Ratio” has the meaning set forth in Section 9.01(i)(i).

“United’s SEC Documents” has the meaning set forth in Section 6.04(g).

“WVBCA” means the West Virginia Business Corporation Act.

ARTICLE II

The Merger

2.01 The Merger.

(a) Prior to the Effective Time, United shall take any and all action necessary (i) to cause Merger Sub to become a party to this Agreement, to be evidenced by the execution by the Merger Sub of a supplement to this Agreement in substantially the form of Annex A and delivery thereof to Centra; and (ii) to cause Merger Sub to take all actions necessary or proper to comply with the obligations of United and such Merger Sub to consummate the transactions contemplated hereby.

(b) At the Effective Time, Centra shall merge with and into Merger Sub (the “Merger”), the separate corporate existence of Centra shall cease and Merger Sub shall survive and continue to exist as a West Virginia corporation (Merger Sub, as the surviving corporation in the Merger, sometimes being referred to herein as the “Surviving Corporation”). United may at any time prior to the Effective Time change the method of effecting the combination with Centra (including, without limitation, the provisions of this Article II) if and to the extent it deems such change to be necessary, appropriate or desirable; provided, that no such change shall (i) cause the approval of the stockholders of United to be required as a condition to the Merger, (ii) alter or change the amount or kind of Merger Consideration, or the relative proportions of cash and United Common Stock included therein, (iii) adversely affect the tax-free treatment of the Merger to Centra’s stockholders as a result of receiving the Merger Consideration, or (iv) materially impede or delay consummation of the transactions contemplated by this Agreement; and provided further, that United shall provide Centra prior written notice of such change and the reasons therefor.

(c) Subject to the satisfaction or waiver of the conditions set forth in Article VIII, the Merger shall become effective upon the occurrence of the filing in the office of the Secretary of State articles of merger in accordance with Section 31D-11-1106 of the WVBCA or such later date and time as may be set forth in such articles of merger. The Merger shall have the effects prescribed in the WVBCA.

(d) The Articles of Incorporation of Merger Sub, as in effect immediately prior to the Effective Time, shall be the Articles of Incorporation of the Surviving Corporation until thereafter amended in accordance with applicable law.

2.02 Effective Date and Effective Time.

(a) Subject to the satisfaction or waiver of the conditions set forth in Article VIII, the parties shall cause the effective date of the Merger (the “Effective Date”) to occur on (i) the fifth business day to occur after the last of the conditions set forth in Article VIII shall have been satisfied or waived in accordance with the terms of this Agreement, other than those conditions that by their nature are to be satisfied at the closing of the Merger (or, at the election of United, on the last business day of the month in which such fifth business day occurs), or (ii) such other date to which the parties may agree in writing. The time on the Effective Date when the Merger shall become effective is referred to as the “Effective Time.”

(b) Notwithstanding any other provision in this Agreement to the contrary, if United shall exercise its right to delay the Effective Date pursuant to this Section 2.02, and a record date for any dividend or other distribution in respect of the United Common Stock is taken during the period of such delay such that the Centra stockholders will not be entitled to participate in such dividend, each stockholder of Centra shall be entitled to receive, upon surrender of the Old Certificates or Book-Entry Shares and compliance with the other provisions of Article IV, a payment equal to the amount and kind of dividend or other distribution that such holder would have received had such holder been a holder of record of the shares of United Common Stock issuable to such holder in the Merger on the record date for such dividend or other distribution.

ARTICLE III

The Bank Merger

3.01 The Bank Merger. After the Effective Time, Centra Bank, the wholly owned indirect subsidiary of Centra, shall merge with and into United Bank, a wholly owned subsidiary of United (the “Bank Merger”), the separate existence of Centra Bank shall cease and United Bank shall survive and continue to exist as a West Virginia banking corporation. United may at any time prior to the Effective Time, change the method of effecting the combination with Centra Bank (including, without limitation, the provisions of this Article III) if and to the extent it deems such changes necessary, appropriate or desirable; provided, however, that no such change shall (i) alter or change the amount or kind of Merger Consideration, or the relative proportions of cash and United Common Stock included therein, (ii) adversely affect the tax-free treatment of the Merger to Centra’s stockholders as a result of receiving the Merger Consideration or (iii) materially impede or delay consummation of the transactions contemplated by this Agreement; and provided, further, that United shall provide Centra with prior written notice of such change and the reasons therefore.

(a) Subject to the satisfaction or waiver of the conditions set forth in Article VIII, the Bank Merger shall become effective upon the occurrence of the filing in the office in the Secretary of State of articles of merger in accordance with Section 31D-11-1106 of the WVBCA or such later date and time as may be set forth in such articles and the issuance of a certificate of merger by the Secretary of State under the WVBCA. The Bank Merger shall have the effects prescribed in the WVBCA.

3.02 Effective Date and Effective Time. Subject to the satisfaction or waiver of the conditions set forth in Article VIII, it being agreed that any required consents, approvals, and authorizations from any Governmental Authorities to effect the Bank Merger shall not be a condition to the consummation of the Merger, the parties shall use reasonable efforts to cause the effective date of the Bank Merger (the “Bank Merger Effective Date”) to occur as soon as reasonably practicable after the Effective Date or such later date to which the parties may agree in writing.

ARTICLE IV

Consideration; Exchange Procedures

4.01 Merger Consideration. Subject to the provisions of this Agreement, at the Effective Time, automatically by virtue of the Merger and without any action on the part of any Person:

(a) Merger Consideration. Each holder of a share of Centra Common Stock (other than Centra and its Subsidiaries or United and its Subsidiaries and Dissenters’ Shares, in each case except for shares held by them in a fiduciary capacity or as a result of debts previously contracted) shall receive in respect thereof, subject to the limitations set forth in this Agreement, 0.7676 shares (“Exchange Ratio”) of United Stock (the “Merger Consideration”). All shares of Centra Preferred Stock shall be cancelled as of the Effective Time.

(b) Outstanding United Stock. Each share of United Common Stock issued and outstanding immediately prior to the Effective Time shall remain issued and outstanding and unaffected by the Merger.

(c) Treasury Shares. Each share of Centra Common Stock held as Treasury Stock immediately prior to the Effective Time shall be canceled and retired at the Effective Time and no consideration shall be issued in exchange therefore.

(d) Merger Sub Shares. Each share of capital stock of Merger Sub issued and outstanding immediately prior to the Effective Time shall remain outstanding and unaffected by the Merger, and no consideration shall be issued in exchange therefor.

4.02 Rights as Stockholders; Stock Transfers. At the Effective Time, holders of Centra Common Stock shall cease to be, and shall have no rights as, stockholders of Centra, other than to receive the Merger Consideration and any dividend or other distribution with respect to such Centra Common Stock with a record date occurring prior to the Effective Time, the payment, if any, in lieu of certain dividends on United Common Stock provided for in Section 2.02(b), and the consideration provided under this Article IV. After the Effective Time, there shall be no transfers on the stock transfer books of Centra or the Surviving Corporation of shares of Centra Common Stock.

4.03 Fractional Shares. Notwithstanding any other provision hereof, no fractional shares of United Common Stock and no certificates or scrip therefore, or other evidence of ownership thereof, will be issued in the Merger; instead, United shall pay to each holder of Centra Common Stock who would otherwise be entitled to a fractional share of United Common

Stock (after taking into account all Old Certificates registered in the name of such holder or Book-Entry Shares held by such holder) an amount in cash (without interest) determined by multiplying such fraction by the average of the daily closing prices for the shares of United Common Stock for the 20 consecutive full trading days on which such shares are actually traded on the NASDAQ (as reported by The Wall Street Journal or, if not reported thereby, any other authoritative source) ending at the close of trading on the tenth trading day (the “Determination Date”) immediately preceding the Effective Date) (the “Average Closing Price”).

4.04 Exchange Procedures.

(a) At or prior to the Effective Time, United shall deposit, or shall cause to be deposited, with the Exchange Agent, for the benefit of the holders of certificates formerly representing shares of Centra Common Stock (“Old Certificates”) and holders of non-certificated shares of Centra Common Stock (“Book-Entry Shares”), for exchange in accordance with this Article IV, (i) certificates representing shares of United Common Stock or non-certificated shares of United Common Stock (collectively, “New Certificates”) and (ii) an amount of cash necessary for payments required by Section 4.03 (the “Exchange Fund”). The Exchange Fund will be distributed in accordance with the Exchange Agent’s normal and customary procedures established in connection with merger transactions.

(b) As soon as practicable after the Effective Time, and in no event later than five business days thereafter, the Exchange Agent shall mail to each holder of record of one or more Old Certificates or Book-Entry Shares a letter of transmittal (which shall specify that delivery shall be effected, and risk of loss and title to the Old Certificates or Book-Entry Shares shall pass, only upon delivery of the Old Certificates or Book-Entry Shares to the Exchange Agent) and instructions for use in effecting the surrender of the Old Certificates or Book-Entry Shares in exchange for New Certificates, if any, that the holders of the Old Certificates or Book-Entry Shares are entitled to receive pursuant to Article IV, any cash in lieu of fractional shares into which the shares of Centra Common Stock represented by the Old Certificates or Book-Entry Shares shall have been converted pursuant to this Agreement and any payment required pursuant to Section 2.02(b) of this Agreement. Upon proper surrender of an Old Certificate or Book-Entry Shares for exchange and cancellation to the Exchange Agent, together with such properly completed letter of transmittal, duly executed, the holder of such Old Certificates or Book-Entry Shares shall be entitled to receive in exchange therefor (i) a New Certificate representing that number of whole shares of United Common Stock that such holder has the right to receive pursuant to Article IV, if any, (ii) a check representing the amount of any cash in lieu of fractional shares which such holder has the right to receive in respect of the Old Certificates or Book-Entry Shares surrendered pursuant to the provisions of this Article IV, and (iii) any payment required by Section 2.02(b), and the Old Certificates or Book-Entry Shares so surrendered shall forthwith be cancelled.

(c) Neither the Exchange Agent, if any, nor any party hereto shall be liable to any former holder of Centra Common Stock for any amount properly delivered to a public official pursuant to applicable abandoned property, escheat or similar laws.

(d) No dividends or other distributions with respect to United Common Stock with a record date occurring after the Effective Time shall be paid to the holder of any

unsurrendered Old Certificate or Book-Entry Shares representing shares of Centra Common Stock converted in the Merger into the right to receive shares of such United Common Stock until the holder thereof shall be entitled to receive New Certificates in exchange therefore in accordance with the procedures set forth in this Section 4.04. After becoming so entitled in accordance with this Section 4.04, the record holder thereof also shall be entitled to receive any such dividends or other distributions by the Exchange Agent, without any interest thereon, which theretofore had become payable with respect to shares of United Common Stock such holder had the right to receive upon surrender of the Old Certificates or Book-Entry Shares.

(e) Any portion of the Exchange Fund that remains unclaimed by the stockholders of Centra on the business day after the one-year anniversary of the Effective Date shall be paid to United. Any stockholders of Centra who have not theretofore complied with this Article IV shall thereafter look only to United for payment of the Merger Consideration, cash in lieu of any fractional shares and unpaid dividends and distributions on United Common Stock deliverable in respect of each share of Centra Common Stock such stockholder holds as determined pursuant to this Agreement, in each case, without any interest thereon.

4.05 Anti-Dilution Provisions. In the event United changes (or establishes a record date for changing) the number of shares of United Common Stock issued and outstanding prior to the Effective Date as a result of a stock split, reverse stock split, stock dividend, reorganization, recapitalization or similar transaction with respect to the outstanding United Common Stock and the record date therefor shall be prior to the Effective Date, or shall establish a record date prior to the Effective Date with respect to any dividend or other distribution in respect of the United Common Stock other than a cash dividend consistent with past practice, the Exchange Ratio shall be proportionately adjusted to provide the holders of Centra Common Stock the same economic effect as contemplated by this Agreement prior to such event.

4.06 Options. At the Effective Time, the holders of each outstanding option (each, a “Centra Stock Option”) to purchase shares of Centra Common Stock, whether vested or unvested as of the date of this Agreement, under any and all plans of Centra under which stock options have been granted (collectively, the “Centra Stock Plans”) shall be entitled to receive cash in an amount equal to the product obtained by multiplying (1) the difference between the value of (a) $21.00 and (b) the exercise price (rounded to the nearest cent) for each outstanding Centra Stock Option by (2) the number of shares of Centra Common Stock subject to such Centra Stock Option (the “Stock Option Consideration”). There will be no payment by United to any holder of Centra Stock Options with an exercise price equal to or greater than $21.00 and any such Centra Stock Options shall be terminated as of the Effective Time. United shall have no obligation to make any additional grants or awards under the Centra Stock Plans.

4.07 Dissenters’ Rights. If applicable, shares of Centra Common Stock that are outstanding immediately prior to the Effective Time and which are held by stockholders who shall have not voted in favor of the Merger or consented thereto in writing and who properly shall have demanded appraisal for such shares in accordance with the WVBCA (collectively, the “Dissenters’ Shares”) shall not be converted into or represent the right to receive the Merger Consideration. Such stockholders instead shall be entitled to receive payment of the appraised value of such shares held by them in accordance with the provisions of the WVBCA, except that all Dissenters’ Shares held by stockholders who shall have failed to perfect or who effectively

shall have withdrawn or otherwise lost their rights to appraisal of such shares under the WVBCA shall thereupon be deemed to have been converted into and to have become exchangeable, as of the Effective Time, for the right to receive, without any interest thereon, the Merger Consideration upon surrender in the manner provided in Section 4.04 of the Old Certificates or Book-Entry Shares that, immediately prior to the Effective Time, evidenced such shares.

ARTICLE V

Actions Pending the Effective Time

5.01 Forebearances of Centra. From the date hereof until the Effective Time, except as expressly contemplated by this Agreement or Previously Disclosed, without the prior written consent of United (which consent shall not be unreasonably withheld, delayed or conditioned), Centra will not, and will cause each of its Subsidiaries not to:

(a) Ordinary Course. Conduct the business of Centra and its Subsidiaries other than in the ordinary and usual course, fail to use reasonable efforts to preserve intact their business organizations and assets and maintain their rights, franchises and existing relations with customers, suppliers, employees and business associates, make any capital expenditure in excess of $100,000 or take any action reasonably likely to have an adverse effect upon Centra’s ability to perform any of its material obligations under this Agreement.

(b) Capital Stock. Other than pursuant to Rights Previously Disclosed and outstanding on the date hereof, (i) issue, sell or otherwise permit to become outstanding, or authorize the creation of, any additional shares of Centra Common Stock or any Rights, (ii) enter into any agreement with respect to the foregoing, or (iii) permit any additional shares of Centra Common Stock to become subject to new grants of employee or director stock options, other Rights or similar stock-based employee rights.

(c) Dividends, Etc. (a) Make, declare, pay or set aside for payment any dividend (other than regular quarterly cash dividends in an amount not to exceed $0.075 per share of Centra Common Stock on the record and payment dates consistent with past practice and dividends from wholly-owned Subsidiaries to Centra or another wholly-owned Subsidiary of Centra) on or in respect of, or declare or make any distribution on any shares of Centra Common Stock or (b) directly or indirectly adjust, split, combine, redeem, reclassify, purchase or otherwise acquire, any shares of its capital stock.

(d) Compensation; Employment Agreements; Etc. (i) enter into or amend or renew any employment, consulting, severance or similar agreements or arrangements with any director, officer or employee of Centra or its Subsidiaries, or (ii) grant any salary or wage increase or increase any employee benefit, except Centra may award normal individual increases in compensation to employees in the ordinary course of business consistent with past practice and (B) Centra and United will establish a retention bonus pool not to exceed $500,000 in the aggregate that will be dedicated to certain employees of Centra designated by officers of Centra for purposes of retaining such employees prior to and after the Effective Time.

(e) Benefit Plans. Enter into, establish, adopt or amend (except (i) as may be required by applicable law or (ii) to satisfy Previously Disclosed contractual obligations existing as of the date hereof) any pension, retirement, stock option, stock purchase, savings, profit sharing, deferred compensation, consulting, bonus, group insurance or other employee benefit, incentive or welfare contract, plan or arrangement, or any trust agreement (or similar arrangement) related thereto, in respect of any director, officer or employee of Centra or its Subsidiaries, or take any action to accelerate the vesting or exercisability of stock options, restricted stock or other compensation or benefits payable thereunder.

(f) Dispositions. Except as Previously Disclosed, sell, transfer, mortgage, encumber or otherwise dispose of or discontinue any of its assets, deposits, business or properties except in the ordinary course of business and in a transaction that is not material to it and its Subsidiaries taken as a whole.

(g) Acquisitions. Except as Previously Disclosed or in the ordinary course of its business, acquire (other than by way of foreclosures or acquisitions of control in a bona fide fiduciary capacity or in satisfaction of debts previously contracted in good faith, in each case in the ordinary and usual course of business consistent with past practice) all or any portion of, the assets, business, deposits or properties of any other entity.

(h) Governing Documents. Amend the Centra Certificate, Centra By-Laws or the certificate of incorporation or by-laws (or similar governing documents) of any of Centra’s Subsidiaries.

(i) Accounting Methods. Implement or adopt any change in its accounting principles, practices or methods, other than as may be required by GAAP.

(j) Contracts. Except in the ordinary course of business consistent with past practice, enter into or terminate any material contract (as defined in Section 6.03(k)) or amend or modify any of its existing material contracts in a manner that is material to Centra and its Subsidiaries taken as a whole.

(k) Claims. Except in the ordinary course of business consistent with past practice, settle any claim, action or proceeding, except for any claim, action or proceeding that does not involve precedent for other material claims, actions or proceedings and that involve solely money damages in an amount, individually or in the aggregate for all such settlements, that is not material to Centra and its Subsidiaries, taken as a whole.

(l) Adverse Actions. (i) Take any action while knowing that such action would, or is reasonably likely to, prevent or impede the Merger from qualifying as a reorganization within the meaning of Section 368 of the Code; or (ii) knowingly take any action that is intended or is reasonably likely to result in (1) any of the conditions to the Merger set forth in Article VIII not being satisfied or (2) a material violation of any provision of this Agreement except, in each case, as may be required by applicable law or regulation.

(m) Risk Management. Except as required by applicable law or regulation, (i) implement or adopt any material change in its interest rate and other risk management policies, procedures or practices, (ii) fail to materially follow its existing policies or practices with respect to managing its exposure to interest rate and other risk, or (iii) fail to use commercially reasonable means to avoid any material increase in its aggregate exposure to interest rate risk.

(n) Indebtedness. Incur any indebtedness for borrowed money other than in the ordinary course of business.

(o) Commitments. Agree or commit to do any of the foregoing.

5.02 Forebearances of United. From the date hereof until the Effective Time, except as expressly contemplated by this Agreement, without the prior written consent of Centra (which consent shall not be unreasonably withheld, delayed or conditioned), United will not, and will cause each of its Subsidiaries not to:

(a) Ordinary Course. Conduct the business of United and its Subsidiaries other than in the ordinary and usual course or fail to use reasonable efforts to preserve intact their business organizations and assets and maintain their rights, franchises and existing relations with customers, suppliers, employees and business associates, or take any action reasonably likely to have an adverse effect upon United’s ability to perform any of its material obligations under this Agreement.

(b) Risk Management. Except as required by applicable law or regulation, (i) implement or adopt any material change in its interest rate and other risk management policies, procedures or practices, (ii) fail to materially follow its existing policies or practices with respect to managing its exposure to interest rate and other risk, or (iii) fail to use commercially reasonable means to avoid any material increase in its aggregate exposure to interest rate risk.

(c) Accounting Methods. Implement or adopt any change in its accounting principles, practices or methods, other than as may be required by GAAP.

(d) Dividends. Make, declare, pay or set aside for payment any extraordinary dividend, other than in connection with the United Stock Repurchase Program.

(e) Adverse Actions. (i) Take any action while knowing that such action would, or is reasonably likely to, prevent or impede the Merger from qualifying as a reorganization within the meaning of Section 368 of the Code; or (ii) knowingly take any action that is intended or is reasonably likely to result in (1) any of the conditions to the Merger set forth in Article VIII not being satisfied or (2) a material violation of any provision of this Agreement except, in each case, as may be required by applicable law or regulation.

(f) Transactions Involving United. Enter into any agreement, arrangement or understanding with respect to the merger, acquisition, consolidation, share exchange or similar business combination involving United and/or a United Subsidiary, where the effect of such agreement, arrangement or understanding, or the consummation or effectuation thereof, would be reasonably likely to or does result in the termination of this Agreement, materially delay or jeopardize the receipt of the approval of any Regulatory Authority or the filing of an application therefor, or cause the anticipated tax treatment of the transactions contemplated hereby to be unavailable; provided, that nothing herein shall prohibit any such transaction that by its terms contemplates the consummation of the Merger in accordance with the provisions of this

Agreement and which treats holders of Centra Common Stock, upon completion of the Merger and their receipt of United Common Stock, in the same manner as the holders of United Common Stock.

(g) Governing Documents. Amend its articles of incorporation or bylaws in a manner that would materially and adversely affect the benefits of the Merger to the stockholders of Centra.

(h) Commitments. Agree or commit to do any of the foregoing.

ARTICLE VI

Representations and Warranties

6.01 Disclosure Schedules. On or prior to the date hereof, United has delivered to Centra a schedule and Centra has delivered to United a schedule (respectively, its “Disclosure Schedule”) setting forth, among other things, items the disclosure of which is necessary or appropriate either in response to an express disclosure requirement contained in a provision hereof or as an exception to one or more representations or warranties contained in Section 6.03 or 6.04 or to one or more of its covenants contained in Article V; provided, that (a) no such item is required to be set forth in a Disclosure Schedule as an exception to a representation or warranty if its absence would not be reasonably likely to result in the related representation or warranty being deemed untrue or incorrect under the standard set forth in Section 6.02, and (b) the mere inclusion of an item in a Disclosure Schedule as an exception to a representation or warranty shall not be deemed an admission by a party that such item represents a material exception or fact, event or circumstance or that such item is reasonably likely to result in a Material Adverse Effect on the party making the representation. All of Centra’s and United’s representations, warranties and covenants contained in this Agreement are qualified by reference to its respective Disclosure Schedule and none thereof shall be deemed to be untrue or breached as a result of effects arising solely from actions taken in compliance with a written request of the other party.

6.02 Standard. No representation or warranty of Centra or United contained in Section 6.03 or 6.04 shall be deemed untrue or incorrect, and no party hereto shall be deemed to have breached a representation or warranty, as a consequence of the existence of any fact, event or circumstance unless such fact, circumstance or event, individually or taken together with all other facts, events or circumstances inconsistent with any representation or warranty contained in Section 6.03 or 6.04 has had or is reasonably likely to have a Material Adverse Effect. For purposes of this Agreement, “knowledge” shall mean (i) with respect to United, actual knowledge of ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇., ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇, ▇▇., ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇, ▇▇., ▇▇▇ ▇. ▇▇▇▇▇▇ and ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, and (ii) with respect to Centra, actual knowledge of ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇. ▇▇▇▇▇, ▇▇., ▇▇▇▇▇ ▇. ▇▇▇▇▇▇, ▇▇▇▇▇▇▇ ▇. Saab, E. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇, ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇▇▇ and ▇▇▇▇ ▇. ▇▇▇▇▇.

6.03 Representations and Warranties of Centra. Subject to Sections 6.01 and 6.02 and except as Previously Disclosed, Centra hereby represents and warrants to United:

(a) Organization and Standing. Centra is a corporation duly organized, validly existing and in good standing under the laws of the State of West Virginia. Centra is duly qualified to do business and is in good standing in the states of the United States and any foreign jurisdictions where its ownership or leasing of property or assets or the conduct of its business requires it to be so qualified.

(b) Capitalization. As of the date hereof, the authorized capital stock of Centra consists of (i) 50,000,000 shares of Centra Common Stock, of which as of the date hereof, 8,446,290 shares are outstanding, and (ii) 1,000,000 shares of Centra Preferred Stock, none of which as of the date hereof are outstanding. As of the date hereof, except pursuant to the terms of options and stock issued pursuant to the Centra Stock Plans, Centra does not have and is not bound by any outstanding subscriptions, options, warrants, calls, commitments or agreements of any character calling for the purchase or issuance of any shares of Centra Common Stock, Centra Preferred Stock or any other equity securities of Centra or any of its Subsidiaries or any securities representing the right to purchase or otherwise receive any shares of Centra Common Stock, Centra Preferred Stock or other equity securities of Centra or any of its Subsidiaries. As of the date hereof, Centra has 1,215,566 shares of Centra Common Stock that are issuable and reserved for issuance upon the exercise of Centra Stock Options. The outstanding shares of Centra Common Stock have been duly authorized and are validly issued and outstanding, fully paid and nonassessable, and subject to no preemptive rights (and were not issued in violation of any preemptive rights).

(c) Subsidiaries. Centra has Previously Disclosed a list of all of its Subsidiaries together with the jurisdiction of organization of each such Subsidiary. (A) Centra owns, directly or indirectly, all the issued and outstanding equity securities of each of its Subsidiaries, (B) no equity securities of any of its Subsidiaries are or may become required to be issued (other than to it or its wholly-owned Subsidiaries) by reason of any Right or otherwise, (C) there are no contracts, commitments, understandings or arrangements by which any of such Subsidiaries is or may be bound to sell or otherwise transfer any equity securities of any such Subsidiaries (other than to it or its wholly-owned Subsidiaries), (D) there are no contracts, commitments, understandings, or arrangements relating to its rights to vote or to dispose of such securities and (E) all the equity securities of each Subsidiary held by Centra or its Subsidiaries are fully paid and nonassessable and are owned by Centra or its Subsidiaries free and clear of any Liens.

(i) Centra has Previously Disclosed a list of all equity securities, or similar interests of any Person or any interest in a partnership or joint venture of any kind, other than its Subsidiaries, that it beneficially owns, directly or indirectly, as of the date hereof.

(ii) Each of Centra’s Subsidiaries has been duly organized and is validly existing in good standing under the laws of the jurisdiction of its organization, and is duly qualified to do business and in good standing in the jurisdictions where its ownership or leasing of property or the conduct of its business requires it to be so qualified.

(d) Corporate Power. Each of Centra and its Subsidiaries has the corporate power and authority to carry on its business as it is now being conducted and to own all its properties and assets; and Centra has the corporate power and authority to execute, deliver and perform its obligations under this Agreement and to consummate the transactions contemplated hereby.

(e) Corporate Authority. Subject to receipt of the requisite approval of this Agreement (including the agreement of merger set forth herein) by the holders of more than a majority of the outstanding shares of Centra Common Stock entitled to vote thereon (which is the only vote of Centra stockholders required thereon), the execution and delivery of this Agreement and the transactions contemplated hereby have been authorized by all necessary corporate action of Centra and the Centra Board. Assuming due authorization, execution and delivery by United, this Agreement is a valid and legally binding obligation of Centra, enforceable in accordance with its terms (except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and similar laws of general applicability relating to or affecting creditors’ rights or by general equity principles).

(f) Consents and Approvals; No Defaults.

(i) No consents or approvals of, or filings or registrations with, any Governmental Authority or with any third party are required to be made or obtained by Centra or any of its Subsidiaries in connection with the execution, delivery or performance by Centra of this Agreement or to consummate the Merger except for (A) filings of applications or notices with federal and state banking and insurance authorities, (B) the filing of a certificate of merger with the Secretary of State pursuant to the WVBCA and the issuance of a certificate of merger in connection therewith, and (C) the filing of the Proxy Statement with the Securities and Exchange Commission. As of the date hereof, Centra is not aware of any reason why the approvals set forth in Section 8.01(b) will not be received without the imposition of a condition, restriction or requirement of the type described in Section 8.01(b).

(ii) Subject to receipt of the regulatory approvals referred to in the preceding paragraph, and expiration of related waiting periods, the execution, delivery and performance of this Agreement and the consummation of the transactions contemplated hereby do not and will not (A) constitute a breach or violation of, or a default under, or give rise to any Lien, any acceleration of remedies or any right of termination under, any law, rule or regulation or any judgment, decree, order, governmental permit or license, or any agreement, indenture or instrument of Centra or of any of its Subsidiaries or to which Centra or any of its Subsidiaries or properties is subject or bound, (B) constitute a breach or violation of, or a default under, the Centra Certificate or the Centra By-Laws, or (C) require any consent or approval under any such law, rule, regulation, judgment, decree, order, governmental permit or license or any agreement, indenture or instrument.

(g) Financial Reports; Absence of Certain Changes or Events.

(i) Centra’s Annual Report on Form 10-K for each of the fiscal years ended December 31, 2007, 2008 and 2009 and all other reports, registration statements, definitive proxy statements or information statements filed or to be filed by it or any of its Subsidiaries subsequent to December 31, 2009, under the Securities Act or under Section 13(a), 13(c), 14 or 15(d) of the Exchange Act in the form filed or to be filed (collectively “Centra’s SEC Documents”), as of the date filed, (A) as to form complied or will comply in all material

respects with the applicable requirements under the Securities Act or the Exchange Act, as the case may be, and (B) did not and will not contain any 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; and each of the balance sheets or statements of condition of Centra contained in or incorporated by reference into any of Centra’s SEC Documents (including the related notes and schedules thereto) fairly presents, or will fairly present, the financial position of Centra and its Subsidiaries as of its date, and each of the statements of income or results of operations and changes in stockholders’ equity and cash flows or equivalent statements of Centra in any of Centra’s SEC Documents (including any related notes and schedules thereto) fairly presents, or will fairly present, the results of operations, changes in stockholders’ equity and cash flows, as the case may be, of Centra and its Subsidiaries for the periods to which they relate, in each case in accordance with GAAP during the periods involved, except in each case as may be noted therein, and subject to normal year-end audit adjustments in the case of unaudited statements.

(ii) Section 6.03(g)(ii) of Centra’s Disclosure Schedule lists, and upon request, Centra has delivered to United, copies of the documentation creating or governing all securitization transactions and “off-balance sheet arrangements” (as defined in Item 303(a)(4)(ii) of Regulation S-K) effected by Centra or its Subsidiaries, since December 31, 2009. Ernst & Young LLP, which has expressed its opinion with respect to the audited financial statements of Centra and its Subsidiaries (including the related notes) included in Centra’s SEC Documents is and has been throughout the periods covered by such financial statements an independent registered public accounting firm (as defined in Section 2(a)(12) of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002).

(iii) Centra has on a timely basis filed all forms, reports and documents required to be filed by it with the SEC since December 31, 2006. Section 6.03(g)(iii) of Centra’s Disclosure Schedule lists and, except to the extent available in full without redaction on the SEC’s web site through the Electronic Data Gathering, Analysis and Retrieval System (▇▇▇▇▇) two days prior to the date of this Agreement, Centra has delivered to United copies in the form filed with the SEC of (A) its Annual Reports on Form 10-K for each fiscal year of the Company beginning after December 31, 2006, (B) its Quarterly Reports on Form 10-Q for each of the first three fiscal quarters in each of the fiscal years of Centra referred to in clause (A) above, (C) all proxy statements relating to Centra’s meetings of stockholders (whether annual or special) held, and all information statements relating to stockholder consents since the beginning of the first fiscal year referred to in clause (A) above, (D) all certifications and statements required by (x) the SEC’s Order dated June 27, 2002, pursuant to Section 21(a)(1) of the Exchange Act (File No. 4-460), (y) Rule 13a-14 or 15d-14 under the Exchange Act or (z) 18 U.S.C. §1350 (Section 906 of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002) with respect to any report referred to above, (E) all other forms, reports, registration statements and other documents (other than preliminary materials if the corresponding definitive materials have been provided to United pursuant to this Section 6.03(g), filed by Centra with the SEC since the beginning of the first fiscal year referred above, and (F) all comment letters received by Centra from the staff of the SEC since December 31, 2009 and all responses to such comment letters by or on behalf of Centra.

(iv) Centra maintains disclosure controls and procedures required by Rule 13a-15 or 15d-15 under the Exchange Act; such controls and procedures are effective to ensure

that all material information concerning Centra and its Subsidiaries is made known on a timely basis to the individuals responsible for the preparation of the Company’s filings with the SEC and other public disclosure documents. Centra maintains internal control over financial reporting as defined in Rule 13a-15(f) under the Exchange Act and as of December 31, 2009, such internal control over financial reporting was effective in providing reasonable assurance to Centra’s management and its board of directors regarding the preparation and fair presentation of published financial statements in accordance with GAAP. To Centra’s knowledge, each director and executive officer of Centra has filed with the SEC on a timely basis all statements required by Section 16(a) of the Exchange Act and the rules and regulations thereunder since December 31, 2009. As used in this Section 6.03(g), the term “file” shall be broadly construed to include any manner in which a document or information is furnished, supplied or otherwise made available to the SEC.

(v) Since December 31, 2009, Centra and its Subsidiaries have not incurred any liability other than in the ordinary course of business consistent with past practice or for legal, accounting, and financial advisory fees and out-of-pocket expenses in connection with the transactions contemplated by this Agreement.

(vi) Since December 31, 2009, (A) Centra and its Subsidiaries have conducted their respective businesses in the ordinary and usual course consistent with past practice (excluding matters related to this Agreement and the transactions contemplated hereby) and (B) no event has occurred or circumstance arisen that, individually or taken together with all other facts, circumstances and events (described in any paragraph of Section 6.03 or otherwise), is reasonably likely to have a Material Adverse Effect with respect to Centra.

(h) Litigation. No litigation, claim or other proceeding before any court or Governmental Authority is pending against Centra or any of its Subsidiaries and, to Centra’s knowledge, no such litigation, claim or other proceeding has been threatened.

(i) Regulatory Matters.

(i) Neither Centra nor any of its Subsidiaries or properties is a party to or is subject to any order, decree, agreement, memorandum of understanding or similar arrangement with, or a commitment letter or similar submission to, or extraordinary supervisory letter from, any federal or state governmental agency or authority charged with the supervision or regulation of financial institutions (or their holding companies) or issuers of securities or engaged in the insurance of deposits (including, without limitation, the Office of the Comptroller of the Currency, the Federal Reserve Board and the Federal Deposit Insurance Corporation) or the supervision or regulation of it or any of its Subsidiaries (collectively, the “Regulatory Authorities”).

(ii) Neither Centra nor any of its Subsidiaries has been advised by any Regulatory Authority that such Regulatory Authority 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.

(iii) Centra is not a financial holding company as defined by the ▇▇▇▇▇-▇▇▇▇▇-▇▇▇▇▇▇ Act of 1999.

(j) Compliance with Laws. Each of Centra and its Subsidiaries:

(i) is in compliance with all applicable federal, state, local and foreign statutes, laws, regulations, ordinances, rules, judgments, orders or decrees applicable thereto or to the employees conducting such businesses, including, without limitation, the Equal Credit Opportunity Act, the Fair Housing Act, the Community Reinvestment Act, the Home Mortgage Disclosure Act and all other applicable fair lending laws and other laws relating to discriminatory business practices;

(ii) has all permits, licenses, authorizations, orders and approvals of, and has made all filings, applications and registrations with, all Governmental Authorities that are required in order to permit them to own or lease their properties and to conduct their businesses as presently conducted; all such permits, licenses, certificates of authority, orders and approvals are in full force and effect and, to Centra’s knowledge, no suspension or cancellation of any of them is threatened;

(iii) has received, since December 31, 2000, no notification or communication from any Governmental Authority (A) asserting that Centra or any of its Subsidiaries is not in compliance with any of the statutes, regulations, or ordinances which such Governmental Authority enforces or (B) threatening to revoke any license, franchise, permit, or governmental authorization (nor, to Centra’s knowledge, do any grounds for any of the foregoing exist);

(iv) Since January 1, 2008, is in compliance with the privacy provisions of the ▇▇▇▇▇-▇▇▇▇▇-▇▇▇▇▇▇ Act, and all other applicable laws relating to consumer privacy; and

(v) At the Effective Time, the assumption by United of Centra’s obligations under Section 7.10 would be in compliance with Section 13(k) of the Exchange Act.

(k) Material Contracts; Defaults. Except for this Agreement, neither Centra nor any of its Subsidiaries is a party to, bound by or subject to any agreement, contract, arrangement, commitment or understanding (whether written or oral) (i) that is a “material contract” within the meaning of Item 601(b)(10) of the SEC’s Regulation S-K or (ii) that restricts or limits in any way the conduct of business by it or any of its Subsidiaries (including without limitation a non-compete or similar provision). Neither Centra nor any of its Subsidiaries is in default under any contract, agreement, commitment, arrangement, lease, insurance policy or other instrument to which it is a party, by which its respective assets, business, or operations may be bound or affected, or under which it or its respective assets, business, or operations receive benefits, and there has not occurred any event that, with the lapse of time or the giving of notice or both, would constitute such a default.

(l) No Brokers. No action has been taken by Centra that would give rise to any valid claim against any party hereto for a brokerage commission, finder’s fee or other like payment with respect to the transactions contemplated by this Agreement, excluding a Previously Disclosed fee to be paid to ▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇, Inc.

(m) Employee Benefit Plans.

(i) Centra has Previously Disclosed a complete and accurate list of all existing bonus, incentive, deferred compensation, pension, retirement, profit-sharing, thrift, savings, employee stock ownership, stock bonus, stock purchase, restricted stock, stock option, severance, welfare and fringe benefit plans, employment or severance agreements and all similar practices, policies and arrangements in which any current or former employee (the “Employees”), current or former consultant (the “Consultants”) or current or former director (the “Directors”) of Centra or any of its Subsidiaries participates or to which any such Employees, Consultants or Directors are a party (the “Compensation and Benefit Plans”). Subject to Sections 5.01(d) and 6.03(m)(ix), neither Centra nor any of its Subsidiaries has any commitment to create any additional Compensation and Benefit Plan or to modify or change any existing Compensation and Benefit Plan.

(ii) Each Compensation and Benefit Plan has been operated and administered in all material respects in accordance with its terms and with applicable law, including, but not limited to, ERISA, the Code, the Securities Act, the Exchange Act, the Age Discrimination in Employment Act, or any regulations or rules promulgated thereunder, and all filings, disclosures and notices required by ERISA, the Code, the Securities Act, the Exchange Act, the Age Discrimination in Employment Act and any other applicable law have been timely made. Each Compensation and Benefit Plan which is an “employee pension benefit plan” within the meaning of Section 3(2) of ERISA (a “Pension Plan”) and which is intended to be qualified under Section 401(a) of the Code has received a favorable determination letter or has applied for a favorable determination letter in compliance with the Code (including a determination that the related trust under such Compensation and Benefit Plan is exempt from tax under Section 501(a) of the Code) from the Internal Revenue Service (“IRS”) or the Plan uses a prototype or volume submitter plan that is the subject of an IRS opinion or advisory letter, and Centra is not aware of any circumstances that could adversely affect such qualification or that are likely to result in the revocation of any existing favorable determination letter or in not receiving a favorable determination letter. There is no material pending or, to the knowledge of Centra, threatened legal action, suit or claim relating to the Compensation and Benefit Plans other than routine claims for benefits. Neither Centra nor any of its Subsidiaries has engaged in a transaction, or omitted to take any action, with respect to any Compensation and Benefit Plan that would reasonably be expected to subject Centra or any of its Subsidiaries to a material tax or penalty imposed by either Section 4975 of the Code or Section 502 of ERISA, assuming for purposes of Section 4975 of the Code that the taxable period of any such transaction expired as of the date hereof.

(iii) No Compensation and Benefit Plans currently maintained, or maintained within the last six years, by Centra or any of its Subsidiaries or any entity (and “ERISA Affiliate”) that is considered one employer with Centra under Section 4001(a)(14) of ERISA or Section 414(b) or (c) of the Code is or was subject to Title IV of ERISA or is or was a multiemployer plan under Subtitle E of Title IV of ERISA. To the knowledge of Centra, there is no pending investigation or enforcement action by the PBGC, the DOL or IRS or any other governmental agency with respect to any Compensation and Benefit Plan.

(iv) All contributions required to be made under the terms of any Compensation and Benefit Plan or any employee benefit arrangements under any collective

bargaining agreement to which Centra or any of its Subsidiaries is a party have been timely made or have been reflected on Centra’s financial statements. None of Centra, any of its Subsidiaries or any ERISA Affiliate (x) has provided, or would reasonably be expected to be required to provide, security to any Pension Plan pursuant to Section 401(a)(29) of the Code, and (y) has taken any action, or omitted to take any action, that has resulted, or would reasonably be expected to result, in the imposition of a lien under Section 412(n) of the Code or pursuant to ERISA.

(v) Neither Centra nor any of its Subsidiaries has any obligations to provide retiree health and life insurance or other retiree death benefits under any Compensation and Benefit Plan, other than benefits mandated by Section 4980B of the Code, and each such Compensation and Benefit Plan may be amended or terminated without incurring liability thereunder, and there has been no communication to Employees by Centra or any of its Subsidiaries that would reasonably be expected to promise or guarantee such Employees retiree health or life insurance or other retiree death benefits on a permanent basis.

(vi) Centra and its Subsidiaries do not maintain any Compensation and Benefit Plans covering foreign Employees.

(vii) With respect to each Compensation and Benefit Plan, if applicable, Centra has provided or made available to United, true and complete copies of existing: (A) Compensation and Benefit Plan documents and amendments thereto; (B) trust instruments and insurance contracts; (C) two most recent Forms 5500 filed with the IRS; (D) most recent actuarial report and financial statement; (E) the most recent summary plan description; (F) forms filed with the PBGC (other than for minimum payments); (G) most recent determination or opinion letter issued by the IRS; (H) any Form 5310 or Form 5330 filed with the IRS; and (I) most recent nondiscrimination tests performed under ERISA and the Code (including 401(k) and 401(m) tests).

(viii) The consummation of the transactions contemplated by this Agreement would not, directly or indirectly (including, without limitation, as a result of any termination of employment prior to or following the Effective Time) reasonably be expected to (A) entitle any Employee, Consultant or Director to any payment (including severance pay or similar compensation) or any increase in compensation, (B) result in the vesting or acceleration of any benefits under any Compensation and Benefit Plan other than the Centra Stock Plans or (C) result in any material increase in benefits payable under any Compensation and Benefit Plan.

(ix) Neither Centra nor any of its Subsidiaries maintains any compensation plans, programs or arrangements the payments under which would not reasonably be expected to be deductible as a result of the limitations under Section 162(m) of the Code and the regulations issued thereunder.

(x) As a result, directly or indirectly, of the transactions contemplated by this Agreement (including, without limitation, as a result of any termination of employment prior to or following the Effective Time), none of United, Centra or the Surviving Corporation, or any of their respective Subsidiaries will be obligated to make a payment that would be characterized as an “excess parachute payment” to an individual who is a “disqualified individual” (as such terms are defined in Section 280G of the Code), without regard to whether such payment is reasonable compensation for personal services performed or to be performed in the future.

(xi) As of the Effective Date, the chief executive officer of Centra will have terminated his full time employment, and (A) all payments and expenses incident to his termination, excluding perquisites, health and welfare benefits and other compensation not included in supplemental executive retirement plans, salary, severance and bonus, will not exceed the amount set forth on Section 6.03(m)(xi) of the Disclosure Schedule and (B) all payments and expenses incident to his termination related to perquisites, health and welfare benefits and other compensation not included in supplemental executive retirement plans, salary, severance and bonus will not exceed the amount set forth on Section 6.03(m)(xi) of the Disclosure Schedule.

(xii) As of the Effective Date, all supplemental employment retirement plans (SERPs) between Centra and any of its employees will have been terminated.

(xiii) Neither Centra nor any of its Subsidiaries has made any agreement, taken any action, or omitted to take any action, with respect to or as part of any Compensation and Benefit Plan that is an operational failure under Section 409A of the Code or that would reasonably be expected to subject Centra or any of its Subsidiaries to any obligation to report any amount or withhold any amount as includable in income and subject to tax, interest or any penalty by any service provider to Centra or any of its Subsidiaries under Section 409A of the Code or to pay any reimbursement or other payment to any service provider, as defined under Section 409A of the Code, respecting any such tax, interest or penalty under Section 409A of the Code. As a result, directly or indirectly, of the transactions contemplated by this Agreement (including, without limitation, as a result of any termination of employment prior to or following the Effective Time), neither Centra nor any of its Subsidiaries will be obligated to report any amount or withhold any amount as includable in income and subject to tax, interest or any penalty by any service provider (as defined under Section 409A of the Code) to Centra or any of its Subsidiaries under Section 409A of the Code or to pay any reimbursement or other payment to any service provider (as defined under Section 409A of the Code) respecting any such Tax, interest or penalty under Section 409A of the Code and no provision of any of the Compensation and Benefit Plans, or any actions taken or omitted thereunder, violate Section 409A of the Code.

(n) Labor Matters. Neither Centra nor any of its Subsidiaries is a party to or is bound by any collective bargaining agreement, contract or other agreement or understanding with a labor union or labor organization, nor is Centra or any of its Subsidiaries the subject of a proceeding asserting that it or any such Subsidiary has committed an unfair labor practice (within the meaning of the National Labor Relations Act) or seeking to compel Centra or any such Subsidiary to bargain with any labor organization as to wages or conditions of employment, nor is there any strike or other labor dispute involving it or any of its Subsidiaries pending or, to Centra’s knowledge, threatened, nor is Centra aware of any activity involving its or any of its Subsidiaries’ employees seeking to certify a collective bargaining unit or engaging in other organizational activity.

(o) Takeover Laws. Centra has taken all action required to be taken by it in order to exempt this Agreement and the transactions contemplated hereby from, and this

Agreement and the transactions contemplated hereby are exempt from, the requirements of any “moratorium”, “control share”, “fair price”, “affiliate transaction”, “business combination” or other antitakeover laws and regulations of any state applicable to Centra (collectively, “Takeover Laws”).

(p) Environmental Matters. To Centra’s knowledge, neither the conduct nor operation of Centra or its Subsidiaries nor any condition of any property presently or previously owned, leased or operated by any of them (including, without limitation, in a fiduciary or agency capacity), or on which any of them holds a Lien, violates or violated Environmental Laws and to Centra’s knowledge, no condition has existed or event has occurred with respect to any of them or any such property that, with notice or the passage of time, or both, is reasonably likely to result in liability under Environmental Laws. To Centra’s knowledge, neither Centra nor any of its Subsidiaries has received any notice from any person or entity that Centra or its Subsidiaries or the operation or condition of any property ever owned, leased, operated, or held as collateral or in a fiduciary capacity by any of them are or were in violation of or otherwise are alleged to have liability under any Environmental Law, including, but not limited to, responsibility (or potential responsibility) for the cleanup or other remediation of any pollutants, contaminants or hazardous or toxic wastes, substances or materials at, on, beneath, or originating from any such property.

(q) Tax Matters.

(i) All Tax Returns that are required to be filed by or with respect to Centra and its Subsidiaries have been duly filed, (ii) all Taxes shown to be due on the Tax Returns referred to in clause (i) have been paid in full, (iii) the Tax Returns referred to in clause (i) have been examined by the Internal Revenue Service or the appropriate state, local or foreign taxing authority or the period for assessment of the Taxes in respect of which such Tax Returns were required to be filed has expired, (iv) all deficiencies asserted or assessments made as a result of such examinations have been paid in full, (v) no issues that have been raised by the relevant taxing authority in connection with the examination of any of the Tax Returns referred to in clause (i) are currently pending, and (vi) no waivers of statutes of limitation have been given by or requested with respect to any Taxes of Centra or its Subsidiaries. Centra has made available to United true and correct copies of the United States Federal Income Tax Returns filed by Centra and its Subsidiaries for each of the three most recent fiscal years ended on or before December 31, 2009. Neither Centra nor any of its Subsidiaries has any liability with respect to income, franchise or similar Taxes that accrued on or before December 31, 2009 in excess of the amounts accrued with respect thereto that are reflected in the financial statements of Centra as of December 31, 2009. As of the date hereof, neither Centra nor any of its Subsidiaries has any knowledge of any conditions that exist that might prevent or impede the Merger from qualifying as a reorganization within the meaning of Section 368(a) of the Code.

(ii) No Tax is required to be withheld pursuant to Section 1445 of the Code as a result of the transfer contemplated by this Agreement.

(r) Risk Management Instruments. Neither Centra nor any of its subsidiaries are parties to any interest rate swaps, caps, floors, option agreements, futures and forward contracts and other similar risk management arrangements, whether entered into for Centra’s own account, or for the account of one or more of Centra’s Subsidiaries or their customers.

(s) Books and Records. The books and records of Centra and its Subsidiaries have been fully, properly and accurately maintained in all material respects, and there are no material inaccuracies or discrepancies of any kind contained or reflected therein and they fairly reflect the substance of events and transactions included therein.

(t) Insurance. Centra Previously Disclosed all of the insurance policies, binders, or bonds maintained by Centra or its Subsidiaries. Centra and its Subsidiaries are insured with insurers believed to be reputable against such risks and in such amounts as the management of Centra reasonably has determined to be prudent in accordance with industry practices. All such insurance policies are in full force and effect; Centra and its Subsidiaries are not in material default thereunder; and all claims thereunder have been filed in due and timely fashion.

6.04 Representations and Warranties of United. Subject to Sections 6.01 and 6.02 and except as Previously Disclosed, United hereby represents and warrants to Centra:

(a) Organization and Standing. United is a corporation duly organized, validly existing and in good standing under the laws of the State of West Virginia. United is duly qualified to do business and is in good standing in the states of the United States and foreign jurisdictions where its ownership or leasing of property or assets or the conduct of its business requires it to be so qualified.

(b) Capitalization.

(i) As of the date hereof, the authorized capital stock of United consists of (A) 100,000,000 shares of United Common Stock, of which as of November 30, 2010, 44,319,157 shares were outstanding, and (B) 50,000,000 shares of preferred stock with par value of $1.00 per share, as of the date hereof, none of which are outstanding. As of the date hereof, except as set forth in its Disclosure Schedule, United does not have and is not bound by any outstanding subscriptions, options, warrants, calls, commitments or agreements of any character calling for the purchase or issuance of any shares of United Common Stock or any other equity securities of United or any of its Subsidiaries or any securities representing the right to purchase or otherwise receive any shares of United Common Stock or other equity securities of United or any of its Subsidiaries. As of November 30, 2010, United had 2,533,012 shares of United Common Stock which are issuable and reserved for issuance upon exercise of United Stock Options. The outstanding shares of United Common Stock have been duly authorized and are validly issued and outstanding, fully paid and nonassessable, and subject to no preemptive rights (and were not issued in violation of any preemptive rights).

(ii) The shares of United Common Stock to be issued in exchange for shares of Centra Common Stock in the Merger, when issued in accordance with the terms of this Agreement, will be duly authorized, validly issued, fully paid and nonassessable, with no personal liability attaching to the ownership thereof, subject to no preemptive rights and authorized for trading on the NASDAQ.

(c) Subsidiaries. Each of United’s Subsidiaries has been duly organized and is validly existing in good standing under the laws of the jurisdiction of its organization, and is duly qualified to do business and is in good standing in the jurisdictions where its ownership or leasing of property or the conduct of its business requires it to be so qualified and it owns, directly or indirectly, all the issued and outstanding equity securities of each of its Significant Subsidiaries. United has Previously Disclosed a list of all of its Subsidiaries, together with the jurisdiction of organization of each Subsidiary.

(d) Corporate Power. Each of United and its Subsidiaries has the corporate power and authority to carry on its business as it is now being conducted and to own all its properties and assets; and United has the corporate power and authority to execute, deliver and perform its obligations under this Agreement and to consummate the transactions contemplated hereby.

(e) Corporate Authority. This Agreement and the transactions contemplated hereby have been authorized by all necessary corporate action of United and the United Board. Shareholder approval of the transactions contemplated hereby is not required. Assuming due authorization, execution and delivery by Centra, this Agreement is a valid and legally binding agreement of United, enforceable in accordance with its terms (except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and similar laws of general applicability relating to or affecting creditors’ rights or by general equity principles).

(f) Consents and Approvals; No Defaults.

(i) No consents or approvals of, or filings or registrations with, any Governmental Authority or with any third party are required to be made or obtained by United or any of its Subsidiaries in connection with the execution, delivery or performance by United of this Agreement or to consummate the Merger except for (A) filings of applications and notices with the federal and state banking and insurance authorities; (B) filings with the NASDAQ regarding the United Common Stock to be issued in the Merger; (C) the filing and declaration of effectiveness of the Registration Statement; (D) the filing of articles of merger with the Secretary of State pursuant to the WVBCA and the issuance of the related certificate of merger; (E) such filings as are required to be made or approvals as are required to be obtained under the securities or “Blue Sky” laws of various states in connection with the issuance of United Stock in the Merger; and (F) receipt of the approvals set forth in Section 8.01(b). As of the date hereof, United is not aware of any reason why the approvals set forth in Section 8.01(b) will not be received without the imposition of a condition, restriction or requirement of the type described in Section 8.01(b).

(ii) Subject to the satisfaction of the requirements referred to in the preceding paragraph and expiration of the related waiting periods, the execution, delivery and performance of this Agreement and the consummation of the transactions contemplated hereby do not and will not (A) constitute a breach or violation of, or a default under, or give rise to any Lien, any acceleration of remedies or any right of termination under, any law, rule or regulation or any judgment, decree, order, governmental permit or license, or agreement, indenture or instrument of United or of any of its Subsidiaries or to which United or any of its Subsidiaries or

properties is subject or bound, (B) constitute a breach or violation of, or a default under, the certificate of incorporation or by-laws (or similar governing documents) of United or any of its Subsidiaries, or (C) require any consent or approval under any such law, rule, regulation, judgment, decree, order, governmental permit or license, agreement, indenture or instrument.

(g) Financial Reports and SEC Documents; Absence of Certain Changes or Events. United’s Annual Report on Form 10-K for each of the fiscal years ended December 31, 2007, 2008 and 2009, and all other reports, registration statements, definitive proxy statements or information statements filed or to be filed by it or any of its Subsidiaries subsequent to December 31, 2009, under the Securities Act or under Section 13(a), 13(c), 14 or 15(d) of the Exchange Act in the form filed or to be filed (collectively “United’s SEC Documents”), as of the date filed, (A) as to form complied or will comply in all material respects with the applicable requirements under the Securities Act or the Exchange Act, as the case may be, and (B) did not and will not contain any 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; and each of the balance sheets or statements of condition of United contained in or incorporated by reference into any of United’s SEC Documents (including the related notes and schedules thereto) fairly presents, or will fairly present, the financial position of United and its Subsidiaries as of its date, and each of the statements of income or results of operations and changes in stockholders’ equity and cash flows or equivalent statements of United in any of United’s SEC Documents (including any related notes and schedules thereto) fairly presents, or will fairly present, the results of operations, changes in stockholders’ equity and cash flows, as the case may be, of United and its Subsidiaries for the periods to which they relate, in each case in accordance with GAAP during the periods involved, except in each case as may be noted therein, and subject to normal year-end audit adjustments in the case of unaudited statements. Section 6.04(g)(i) of United’s Disclosure Schedule lists, and upon request, United has delivered to Centra, copies of the documentation creating or governing all securitization transactions and “off-balance sheet arrangements” (as defined in Item 303(a)(4)(ii) of Regulation S-K) effected by United or its Subsidiaries, since December 31, 2009. Ernst & Young, LLP, which has expressed its opinion with respect to the financial statements of United and its Subsidiaries (including the related notes) included in the United SEC Documents is and has been throughout the periods covered by such financial statements an independent registered public accounting firm (as defined in Section 2(a)(12) of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002).

(i) United has on a timely basis filed all forms, reports and documents required to be filed by it with the SEC since December 31, 2006. Section 6.04(g)(iii) of United’s Disclosure Schedule lists and, except to the extent available in full without redaction on the SEC’s web site through the Electronic Data Gathering, Analysis and Retrieval System (▇▇▇▇▇) two days prior to the date of this Agreement, United has delivered to Centra copies in the form filed with the SEC of (A) its Annual Reports on Form 10-K for each fiscal year of the Company beginning after December 31, 2006, (B) its Quarterly Reports on Form 10-Q for each of the first three fiscal quarters in each of the fiscal years of United referred to in clause (A) above, (C) all proxy statements relating to United’s meetings of stockholders (whether annual or special) held, and all information statements relating to stockholder consents since the beginning of the first fiscal year referred to in clause (A) above, (D) all certifications and statements required by (x) the SEC’s Order dated June 27, 2002, pursuant to Section 21(a)(1) of the Exchange Act (File No.

4-460), (y) Rule 13a-14 or 15d-14 under the Exchange Act or (z) 18 U.S.C. §1350 (Section 906 of the ▇▇▇▇▇▇▇▇-▇▇▇▇▇ Act of 2002) with respect to any report referred to above, (E) all other forms, reports, registration statements and other documents (other than preliminary materials if the corresponding definitive materials have been provided to Centra pursuant to this Section 6.04(g), filed by United with the SEC since the beginning of the first fiscal year referred above, and (F) all comment letters received by United from the staff of the SEC since December 31, 2009 and all responses to such comment letters by or on behalf of United.

(ii) United maintains disclosure controls and procedures required by Rule 13a-15 or 15d-15 under the Exchange Act; such controls and procedures are effective to ensure that all material information concerning United and its Subsidiaries is made known on a timely basis to the individuals responsible for the preparation of United’s filings with the SEC and other public disclosure documents. United maintains internal control over financial reporting as defined in Rule 13a-15(f) under the Exchange Act and as of December 31, 2009, such internal control over financial reporting was effective in providing reasonable assurance to United’s management and its board of directors regarding the preparation and fair presentation of published financial statements in accordance with GAAP. To United’s knowledge, each director and executive officer of United has filed with the SEC on a timely basis all statements required by Section 16(a) of the Exchange Act and the rules and regulations thereunder since December 31, 2009. As used in this Section 6.03(g), the term “file” shall be broadly construed to include any manner in which a document or information is furnished, supplied or otherwise made available to the SEC.

(iii) Since December 31, 2009, United and its Subsidiaries have not incurred any liability other than in the ordinary course of business consistent with past practice.

(iv) Since December 31, 2009, (A) United and its Subsidiaries have conducted their respective businesses in the ordinary and usual course consistent with past practice (excluding matters related to this Agreement and the transactions contemplated hereby) and (B) no event has occurred or circumstance arisen that, individually or taken together with all other facts, circumstances and events (described in any paragraph of Section 6.04 or otherwise), is reasonably likely to have a Material Adverse Effect with respect to United.

(h) Litigation. No litigation, claim or other proceeding before any Governmental Authority is pending against United or any of its Subsidiaries and, to the best of United’s knowledge, no such litigation, claim or other proceeding has been threatened.

(i) Regulatory Matters. Neither United nor any of its Subsidiaries or properties is a party to or is subject to any order, decree, agreement, memorandum of understanding or similar arrangement with, or a commitment letter or similar submission to, or extraordinary supervisory letter from, any Regulatory Authority.

(i) Neither United nor any of its Subsidiaries has been advised by any Regulatory Authority that such Regulatory Authority 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.

(ii) United is not a financial holding company as defined by the ▇▇▇▇▇-▇▇▇▇▇-▇▇▇▇▇▇ Act of 1999.

(j) Compliance with Laws. Each of United and its Subsidiaries:

(ii) has all permits, licenses, authorizations, orders and approvals of, and has made all filings, applications and registrations with, all Governmental Authorities that are required in order to permit them to own or lease their properties and to conduct their businesses as presently conducted; all such permits, licenses, certificates of authority, orders and approvals are in full force and effect and, to its knowledge, no suspension or cancellation of any of them is threatened;

(iii) has received, since December 31, 1998, no notification or communication from any Governmental Authority (A) asserting that United or any of its Subsidiaries is not in compliance with any of the statutes, regulations, or ordinances which such Governmental Authority enforces or (B) threatening to revoke any license, franchise, permit, or governmental authorization (nor, to United’s knowledge, do any grounds for any of the foregoing exist); and

(iv) since July 1, 2001, is in compliance with the privacy provisions of the ▇▇▇▇▇-▇▇▇▇▇-▇▇▇▇▇▇ Act, and all other applicable laws relating to consumer privacy.

(k) Material Contracts; Defaults. Except for this Agreement, neither United nor any of its Subsidiaries is a party to, bound by or subject to any agreement, contract, arrangement, commitment or understanding (whether written or oral) (i) that is a “material contract” within the meaning of Item 601(b)(10) of the SEC’s Regulation S-K or (ii) that restricts or limits in any way the conduct of business by it or any of its Subsidiaries (including without limitation a non-compete or similar provision). Neither United nor any of its Subsidiaries is in default under any contract, agreement, commitment, arrangement, lease, insurance policy or other instrument to which it is a party, by which its respective assets, business, or operations may be bound or affected, or under which it or its respective assets, business, or operations receive benefits, and there has not occurred any event that, with the lapse of time or the giving of notice or both, would constitute such a default.

(l) Employee Benefit Plans.

(i) United has Previously Disclosed a complete and accurate list of all existing bonus, incentive, deferred compensation, pension, retirement, profit-sharing, thrift, savings, employee stock ownership, stock bonus, stock purchase, restricted stock, stock option, severance, welfare and fringe benefit plans, employment or severance agreements and all similar practices, policies and arrangements in which any current or former employee (the “United

Employees”), current or former consultant (the “United Consultants”) or current or former director (the “United Directors”) of United or any of its Subsidiaries participates or to which any United Employees, United Consultants or United Directors are a party (the “United Compensation and Benefit Plans”).

(ii) Each United Compensation and Benefit Plan has been operated and administered in all material respects in accordance with its terms and with applicable law, including, but not limited to, ERISA, the Code, the Securities Act, the Exchange Act, the Age Discrimination in Employment Act, or any regulations or rules promulgated thereunder, and all filings, disclosures and notices required by ERISA, the Code, the Securities Act, the Exchange Act, the Age Discrimination in Employment Act and any other applicable law have been timely made. Each Compensation and Benefit Plan which is an “employee pension benefit plan” within the meaning of Section 3(2) of ERISA (a “United Pension Plan”) and which is intended to be qualified under Section 401(a) of the Code has received a favorable determination letter (including a determination that the related trust under such United Compensation and Benefit Plan is exempt from tax under Section 501(a) of the Code) from the IRS or the Compensation and Benefit Plan uses a prototype or volume submitter plan that is the subject of an IRS opinion or advisory letter, and United is not aware of any circumstances which could adversely affect such qualification or which are likely to result in the revocation of any existing favorable determination letter or in not receiving a favorable determination letter. There is no material pending or, to the knowledge of United, threatened legal action, suit or claim relating to the United Compensation and Benefit Plans other than routine claims for benefits. Neither United nor any of its Subsidiaries has engaged in a transaction, or omitted to take any action, with respect to any United Compensation and Benefit Plan that would reasonably be expected to subject United or any of its Subsidiaries to a tax or penalty imposed by either Section 4975 of the Code or Section 502 of ERISA, assuming for purposes of Section 4975 of the Code that the taxable period of any such transaction expired as of the date hereof.

(iii) No liability (other than for payment of premiums to the PBGC which have been made or will be made on a timely basis) under Title IV of ERISA has been or is expected to be incurred by United or any of its Subsidiaries with respect to any ongoing, frozen or terminated “single-employer plan”, within the meaning of Section 4001(a)(15) of ERISA, currently or formerly maintained by any of them, or any single-employer plan of any entity (an “United ERISA Affiliate”) which is considered one employer with United under Section 4001(a)(14) of ERISA or Section 414(b) or (c) of the Code (an “United ERISA Affiliate Plan”). None of United, any of its Subsidiaries or any United ERISA Affiliate has contributed, or has been obligated to contribute, to a multiemployer plan under Subtitle E of Title IV of ERISA at any time since September 26, 1980. No notice of a “reportable event”, within the meaning of Section 4043 of ERISA for which the 30-day reporting requirement has not been waived, has been required to be filed for any United Compensation and Benefit Plan or by any United ERISA Affiliate Plan within the 12-month period ending on the date hereof, and no such notice will be required to be filed as a result of the transactions contemplated by this Agreement. The PBGC has not instituted proceedings to terminate any Pension Plan or United ERISA Affiliate Plan and, to United’s knowledge, no condition exists that presents a material risk that such proceedings will be instituted. To the knowledge of United, there is no pending investigation or enforcement action by the PBGC, the DOL or IRS or any other governmental agency with respect to any United Compensation and Benefit Plan. Under each United Pension Plan and United ERISA

Affiliate Plan, as of the date of the most recent actuarial valuation performed prior to the date of this Agreement, the actuarially determined present value of all “benefit liabilities”, within the meaning of Section 4001(a)(16) of ERISA (as determined on the basis of the actuarial assumptions contained in such actuarial valuation of such United Pension Plan or United ERISA Affiliate Plan), did not exceed the then current value of the assets of such United Pension Plan or United ERISA Affiliate Plan and since such date there has been neither an adverse change in the financial condition of such United Pension Plan or United ERISA Affiliate Plan nor any amendment or other change to such Pension Plan or ERISA Affiliate Plan that would increase the amount of benefits thereunder which reasonably could be expected to change such result.

(iv) All contributions required to be made under the terms of any United Compensation and Benefit Plan or United ERISA Affiliate Plan or any employee benefit arrangements under any collective bargaining agreement to which United or any of its Subsidiaries is a party have been timely made or have been reflected on United’s financial statements. Neither any United Pension Plan nor any United ERISA Affiliate Plan has an “accumulated funding deficiency” (whether or not waived) within the meaning of Section 412 of the Code or Section 302 of ERISA and all required payments to the PBGC with respect to each United Pension Plan or United ERISA Affiliate Plan have been made on or before their due dates. None of United, any of its Subsidiaries or any United ERISA Affiliate (x) has provided, or would reasonably be expected to be required to provide, security to any United Pension Plan or to any United ERISA Affiliate Plan pursuant to Section 401(a)(29) of the Code, and (y) has taken any action, or omitted to take any action, that has resulted, or would reasonably be expected to result, in the imposition of a lien under Section 412(n) of the Code or pursuant to ERISA.

(v) Neither United nor any of its Subsidiaries has any obligations to provide retiree health and life insurance or other retiree death benefits under any United Compensation and Benefit Plan, other than benefits mandated by Section 4980B of the Code, and each such United Compensation and Benefit Plan may be amended or terminated without incurring liability thereunder and there has been no communication to Employees by United or any of its Subsidiaries that would reasonably be expected to promise or guarantee such Employees retiree health or life insurance or other retiree death benefits on a permanent basis.

(vi) United and its Subsidiaries do not maintain any United Compensation and Benefit Plans covering foreign Employees.

(vii) The consummation of the transactions contemplated by this Agreement would not, directly or indirectly (including, without limitation, as a result of any termination of employment prior to or following the Effective Time) reasonably be expected to (A) entitle any United Employee, United Consultant or United Director to any payment (including severance pay or similar compensation) or any increase in compensation, (B) result in the vesting or acceleration of any benefits under any United Compensation and Benefit Plan or (C) result in any material increase in benefits payable under any United Compensation and Benefit Plan.

(viii) Except for compensation paid to ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇, neither United nor any of its Subsidiaries maintains any compensation plans, programs or arrangements the payments under which would not reasonably be expected to be deductible as a result of the limitations under Section 162(m) of the Code and the regulations issued thereunder.

(ix) As a result, directly or indirectly, of the transactions contemplated by this Agreement (including, without limitation, as a result of any termination of employment prior to or following the Effective Time), none of United, Centra or the Surviving Corporation, or any of their respective Subsidiaries will be obligated to make a payment that would be characterized as an “excess parachute payment” to an individual who is a “disqualified individual” (as such terms are defined in Section 280G of the Code), without regard to whether such payment is reasonable compensation for personal services performed or to be performed in the future.

(x) Neither United nor any of its Subsidiaries has made any agreement, taken any action, or omitted to take any action, with respect to or as part of any United Compensation and Benefit Plan that is an operational failure under Section 409A of the Code or that would reasonably be expected to subject United or any of its Subsidiaries to any obligation to report any amount or withhold any amount as includable in income and subject to tax, interest or any penalty by any service provider to United or any of its Subsidiaries under Section 409A of the Code or to pay any reimbursement or other payment to any service provider, as defined under Section 409A of the Code, respecting any such tax, interest or penalty under Section 409A of the Code.

(m) No Brokers. No action has been taken by United that would give rise to any valid claim against any party hereto for a brokerage commission, finder’s fee or other like payment with respect to the transactions contemplated by this Agreement, excluding a Previously Disclosed fee to Sandler ▇’▇▇▇▇▇ + Partners, L.P.

(n) Labor Matters. Neither United nor any of its Subsidiaries is a party to or is bound by any collective bargaining agreement, contract or other agreement or understanding with a labor union or labor organization, nor is United or any of its Subsidiaries the subject of a proceeding asserting that it or any such Subsidiary has committed an unfair labor practice (within the meaning of the National Labor Relations Act) or seeking to compel United or any such Subsidiary to bargain with any labor organization as to wages or conditions of employment, nor is there any strike or other labor dispute involving it or any of its Subsidiaries pending or, to United’s knowledge, threatened, nor is United aware of any activity involving its or any of its Subsidiaries’ employees seeking to certify a collective bargaining unit or engaging in other organizational activity.

(o) Takeover Laws. United has taken all action required to be taken by it in order to exempt this Agreement and the transactions contemplated hereby from, and this Agreement and the transactions contemplated hereby are exempt from, the requirements of any Takeover Laws applicable to United.

(p) Environmental Matters. To United’s knowledge, neither the conduct nor operation of United or its Subsidiaries nor any condition of any property presently or previously owned, leased or operated by any of them (including, without limitation, in a fiduciary or agency capacity), or on which any of them holds a Lien, violates or violated Environmental Laws and to United’s knowledge no condition has existed or event has occurred with respect to any of them

or any such property that, with notice or the passage of time, or both, is reasonably likely to result in liability under Environmental Laws. To United’s knowledge, neither United nor any of its Subsidiaries has received any notice from any person or entity that United or its Subsidiaries or the operation or condition of any property ever owned, leased, operated or held as collateral or in a fiduciary capacity by any of them are or were in violation of or otherwise are alleged to have liability under any Environmental Law, including, but not limited to, responsibility (or potential responsibility) for the cleanup or other remediation of any pollutants, contaminants, or hazardous or toxic wastes, substances or materials at, on, beneath or originating from any such property.

(q) Tax Matters. (i) All Tax Returns that are required to be filed by or with respect to United and its Subsidiaries have been duly filed, (ii) all Taxes shown to be due on the Tax Returns referred to in clause (i) have been paid in full, (iii) the Tax Returns referred to in clause (i) have been examined by the Internal Revenue Service or the appropriate state, local or foreign taxing authority or the period for assessment of the Taxes in respect of which such Tax Returns were required to be filed has expired, (iv) all deficiencies asserted or assessments made as a result of such examinations have been paid in full, (v) no issues that have been raised by the relevant taxing authority in connection with the examination of any of the Tax Returns referred to in clause (i) are currently pending, and (vi) no waivers of statutes of limitation have been given by or requested with respect to any Taxes of United or its Subsidiaries. United has made available to Centra a true and correct copy of the United States Federal Income Tax Returns filed by United and its Subsidiaries for the most recent fiscal year ended on December 31, 2009. Neither United nor any of its Subsidiaries has any liability with respect to income, franchise or similar Taxes that accrued on or before December 31, 2009 in excess of the amounts accrued with respect thereto that are reflected in the financial statements of United as of December 31, 2009. As of the date hereof, neither United nor any of its Subsidiaries has any knowledge of any conditions that exist that might prevent or impede the Merger from qualifying as a reorganization within the meaning of Section 368(a) of the Code.

(r) Risk Management Instruments. Neither United not any of its Subsidiaries are parties to any interest rate swaps, caps, floors, option agreements, futures and forward contracts and other similar risk management arrangements, whether entered into for United’s own account, or for the account of one or more of United’s Subsidiaries or their customers.

(s) Books and Records. The books and records of United and its Subsidiaries have been fully, properly and accurately maintained in all material respects, and there are no material inaccuracies or discrepancies of any kind contained or reflected therein, and they fairly reflect the substance of events and transactions included therein.

(t) Insurance. United Previously Disclosed all of the insurance policies, binders, or bonds maintained by United or its Subsidiaries. United and its Subsidiaries are insured with insurers believed to be reputable against such risks and in such amounts as the management of United reasonably has determined to be prudent in accordance with industry practices. All such insurance policies are in full force and effect; United and its Subsidiaries are not in material default thereunder; and all claims thereunder have been filed in due and timely fashion.

(u) Funds Available. United has, and will have available to it at the Effective Time, sources of capital and authorized shares of United Common Stock sufficient to pay the Merger Consideration and the amounts payable pursuant to Section 4.03.

(v) Representations and Warranties of United with Respect to Merger Sub.

(i) Organization, Standing and Authority. Merger Sub is duly organized and validly existing in good standing under the laws of the state of its organization, and is or prior to the Effective Time will be duly qualified to do business and in good standing in the jurisdictions where its ownership or leasing of property or the conduct of its business requires it to be so qualified. Merger Sub will have been organized for the purpose of the transactions contemplated by this Agreement, and no newly chartered Merger Sub will have previously conducted any business or incurred any liabilities.

(ii) Power. Merger Sub has, or prior to the Effective Time will have, the power and authority to execute, deliver and perform its obligations under this Agreement and to consummate the transactions contemplated hereby.

(iii) Authority. This Agreement and the transactions contemplated hereby have been, or prior to the Effective Time will have been, authorized by all requisite action on the part of Merger Sub and its respective subsidiaries or members. Upon execution and delivery of Annex A, this Agreement will be a valid and legally binding agreement of Merger Sub enforceable in accordance with its terms (except as enforceability may be limited by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and similar laws of general applicability relating to or affecting creditors’ rights or by general equity principles).

ARTICLE VII

Covenants

7.01 Reasonable Best Efforts. Subject to the terms and conditions of this Agreement, each of Centra and United agrees to use its reasonable best efforts in good faith to take, or cause to be taken, all actions, and to do, or cause to be done, all things necessary, proper or desirable, or advisable under applicable laws, so as to permit consummation of the Merger as promptly as practicable and otherwise to enable consummation of the transactions contemplated hereby and shall cooperate fully with the other party hereto to that end.

7.02 Stockholder Approvals. Centra agrees to take, in accordance with applicable law and the Centra Certificate and Centra By-laws, all action necessary to convene an appropriate meeting of its stockholders to consider and vote upon the approval of this Agreement and any other matters required to be approved by Centra’s stockholders for consummation of the Merger (including any adjournment or postponement, the “Centra Meeting”), as promptly as practicable after the Registration Statement is declared effective. The Centra Board will recommend that the Centra stockholders approve and adopt the Agreement and the transactions contemplated hereby, provided that the Centra Board may fail to make such recommendation, or withdraw, modify or change any such recommendation, if the Centra Board, after having consulted with and considered the advice of outside counsel, has determined that the making of such

recommendation, or the failure to withdraw, modify or change such recommendation, would be reasonably likely to constitute a breach of the fiduciary duties of the members of the Centra Board under applicable law.

7.03 Registration Statement.

(a) United agrees to prepare a registration statement on Form S-4 (the “Registration Statement”) to be filed by United with the SEC in connection with the issuance of United Common Stock in the Merger (including the prospectus of United and proxy solicitation materials of Centra constituting a part thereof (the “Proxy Statement”) and all related documents). Centra and United agree to cooperate, and to cause their respective Subsidiaries to cooperate, with the other and its counsel and its accountants in the preparation of the Registration Statement and the Proxy Statement. United agrees to file the Registration Statement (including the Proxy Statement in preliminary form) with the SEC as promptly as reasonably practicable and in any event within 90 days from the date of this Agreement. Each of Centra and United agrees to use all reasonable efforts to cause the Registration Statement to be declared effective under the Securities Act as promptly as reasonably practicable after filing thereof. United also agrees to use all reasonable efforts to obtain, prior to the effective date of the Registration Statement, all necessary state securities law or “Blue Sky” permits and approvals required to carry out the transactions contemplated by this Agreement. Each of United and Centra agrees to furnish to the other party all information concerning itself, its Subsidiaries, officers, directors and stockholders and such other matters as may be reasonably necessary or advisable or as may be reasonably requested in connection with the Registration Statement, Proxy Statement or any other statement, filing, notice or application made by or on behalf of United, Centra or their respective Subsidiaries to any Governmental Authority in connection with the Merger and the other transactions contemplated by this Agreement. Centra shall have the right to review and consult with United and approve the form of, and any characterization of such information included in, the Registration Statement prior to its being filed with the SEC.

(b) Each of Centra and United agrees, as to itself and its Subsidiaries, that none of the information supplied or to be supplied by it for inclusion or incorporation by reference in (i) the Registration Statement will, at the time the Registration Statement and each amendment or supplement thereto, if any, becomes effective under the Securities Act, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading, and (ii) the Proxy Statement and any amendment or supplement thereto will, at the date of mailing to stockholders and at the time of the Centra Meeting, as the case may be, contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading or any statement which, in the light of the circumstances under which such statement is made, will be false or misleading with respect to any material fact, or which will omit to state any material fact necessary in order to make the statements therein not false or misleading or necessary to correct any statement in any earlier statement in the Proxy Statement or any amendment or supplement thereto. Each of Centra and United further agrees that if it shall become aware prior to the Effective Date of any information furnished by it that would cause any of the statements in the Proxy Statement to be false or misleading with respect to any material fact, or to omit to state any material fact necessary to make the statements therein not false or misleading, to promptly inform the other party thereof and to take the necessary steps to correct the Proxy Statement.

(c) United agrees to advise Centra, promptly after United receives notice thereof, of the time when the Registration Statement has become effective or any supplement or amendment has been filed, of the issuance of any stop order or the suspension of the qualification of United Stock for offering or sale in any jurisdiction, of the initiation or threat of any proceeding for any such purpose, or of any request by the SEC for the amendment or supplement of the Registration Statement or for additional information.

7.04 Press Releases. Each of Centra and United agrees that it will not, without the prior approval of the other party, file any material pursuant to SEC Rules 165 or 425, or issue any press release or written statement for general circulation relating to the transactions contemplated hereby, except as otherwise required by applicable law or regulation or NASDAQ rules.

7.05 Access; Information.

(a) Each of Centra and United agrees that upon reasonable notice and subject to applicable laws relating to the exchange of information, it shall afford the other party and the other party’s officers, employees, counsel, accountants and other authorized representatives, such access during normal business hours throughout the period prior to the Effective Time to the books, records (including, without limitation, tax returns and work papers of independent auditors), properties, personnel and to such other information as any party may reasonably request and, during such period, it shall furnish promptly to such other party (i) a copy of each material report, schedule and other document filed by it pursuant to the requirements of federal or state securities laws, and (ii) all other information concerning the business, properties and personnel of it as the other may reasonably request. Neither United or its Subsidiaries nor Centra or its Subsidiaries shall be required to provide access to or to disclose information where such access or disclosure would jeopardize the attorney-client privilege of United, Centra or their respective Subsidiaries, as the case may be, or contravene any applicable law or regulation or binding contract, agreement or arrangement entered into prior to the date of this Agreement; and in any such event, the parties will make appropriate substitute disclosure arrangements.

(b) Each agrees that it will not, and will cause its representatives not to, use any information obtained pursuant to this Section 7.05 (as well as any other information obtained prior to the date hereof in connection with the entering into of this Agreement) for any purpose unrelated to the consummation of the Merger and the other transactions contemplated by this Agreement. Subject to the requirements of law, each party will keep confidential, and will cause its representatives to keep confidential, all information and documents obtained pursuant to this Section 7.05 (as well as any other information obtained prior to the date hereof in connection with the entering into of this Agreement) unless such information (i) was already known to such party, (ii) becomes available to such party from other sources not known by such party to be bound by a confidentiality obligation, (iii) is disclosed with the prior written approval of the party to which such information pertains or (iv) is or becomes readily ascertainable from published information or trade sources. In the event that this Agreement is terminated or the

transactions contemplated by this Agreement shall otherwise fail to be consummated, each party shall promptly cause all copies of documents or extracts thereof containing information and data as to another party hereto to be returned to the party that furnished the same. No investigation by either party of the business and affairs of the other shall affect or be deemed to modify or waive any representation, warranty, covenant or agreement in this Agreement, or the conditions to either party’s obligation to consummate the transactions contemplated by this Agreement.

(c) During the period from the date of this Agreement to the Effective Time, each party shall promptly furnish the other with copies of all monthly and other interim financial statements produced in the ordinary course of business as the same shall become available.

(d) The provisions of this Section 7.05 are in addition to, and not in lieu of that certain letter agreement dated October 5, 2010, between United and ▇▇▇▇▇, ▇▇▇▇▇▇▇▇ & ▇▇▇▇▇, Inc, the terms of which are hereby specifically confirmed.

7.06 Acquisition Proposals. Centra agrees that it shall not, and shall cause its Subsidiaries and its Subsidiaries’ officers, directors, agents, advisors and affiliates not to, solicit or encourage inquiries or proposals with respect to, or engage in any negotiations concerning, or provide any confidential information to, or have any discussions with any person relating to, any Acquisition Proposal. It shall immediately cease and cause to be terminated any activities, discussions or negotiations conducted prior to the date of this Agreement with any parties other than United with respect to any of the foregoing and shall use its reasonable best efforts to enforce any confidentiality or similar agreement relating to an Acquisition Proposal. Centra will inform United promptly of all relevant details of any inquiries or contacts by third parties relating to the possible disposition of the business or the capital stock of Centra or any merger, change or control or other business combination involving Centra. Notwithstanding the foregoing, if, at any time the Centra Board determines in good faith, after consultation with outside counsel, that failure to do so would be reasonably likely to constitute a breach of its fiduciary duties under applicable law, Centra, in response to a written Acquisition Proposal that was unsolicited after the date of this Agreement or that did not otherwise result from a breach of this Section 7.06, may furnish non-public information with respect to Centra to the Person who made such Acquisition Proposal and participate in negotiations regarding such Acquisition Proposal.

7.07 Takeover Laws. No party hereto shall take any action that would cause the transactions contemplated by this Agreement to be subject to requirements imposed by any Takeover Law and each of them shall take all necessary steps within its control to exempt (or ensure the continued exemption of) the transactions contemplated by this Agreement from any applicable Takeover Law, as now or hereafter in effect.

7.08 Exemption from Liability Under Section 16(b). United and Centra agree that, in order to most effectively compensate and retain certain directors and officers of Centra in connection with the Merger, both prior to and after the Effective Time, it is desirable that the directors and officers of Centra not be subject to a risk of liability under Section 16(b) of the Exchange Act, and for that compensatory and retentive purposes agree to the provisions of this Section 7.08. The Centra Board, or a committee of “Non-Employee Directors” (as such term is

defined for purposes of Rule 16b-3(d) under the Exchange Act) thereof, shall adopt a resolution providing that the disposition by the directors and officers of Centra Common Stock and Centra Stock Options, in each case pursuant to the transactions contemplated by this Agreement, are intended to be exempt from liability pursuant to Section 16(b) under the Exchange Act.

7.09 Regulatory Applications.

(a) United and Centra and their respective Subsidiaries shall cooperate and use their respective reasonable best efforts to prepare all documentation, to effect all filings and to obtain all permits, consents, approvals and authorizations of all third parties and Governmental Authorities necessary to consummate the transactions contemplated by this Agreement. Each Party shall use its reasonable efforts to resolve objections, if any, which may be asserted with respect to the Merger under any applicable law, regulation or decree, including agreeing to divest any assets, deposits, lines of business or branches; provided, that United shall not be required to agree to any condition or take any action if such agreements or the taking of such action is reasonably likely to result in a condition or restriction having an effect of the type referred to in Section 8.01(b). Each of United and Centra shall have the right to review in advance, and to the extent practicable each will consult with the other, in each case subject to applicable laws relating to the exchange of information, with respect to, all material written information submitted to any third party or any Governmental Authority in connection with the transactions contemplated by this Agreement. In exercising the foregoing right, each of the parties hereto agrees to act reasonably and as promptly as practicable. Each party hereto agrees that it will consult with the other party hereto with respect to the obtaining of all material permits, consents, approvals and authorizations of all third parties and Governmental Authorities necessary or advisable to consummate the transactions contemplated by this Agreement and each party will keep the other party apprised of the status of material matters relating to completion of the transactions contemplated hereby, including advising the other party upon receiving any communication from a Governmental Authority the consent or approval of which is required for the consummation of the Merger and the other transactions contemplated by this Agreement that causes such party to believe that there is a reasonable likelihood that any required consent or approval from a Governmental Authority will not be obtained or that the receipt of such consent or approval may be materially delayed (a “Regulatory Communication”). Upon the receipt of a Regulatory Communication, without limiting the scope of the foregoing paragraphs, United shall, to the extent permitted by applicable law (i) promptly advise Centra of the receipt of any substantive communication from a Governmental Authority with respect to the transactions contemplated hereby, (ii) provide Centra with a reasonable opportunity to participate in the preparation of any response thereto and the preparation of any other substantive submission or communication to any Governmental Authority with respect to the transactions contemplated hereby and to review any such response, submission or communication prior to the filing or submission thereof, and (iii) provide Centra with the opportunity to participate in any meetings or substantive telephone conversations that United or its Subsidiaries or their respective representatives may have from time to time with any Governmental Authority with respect to the transactions contemplated by this Agreement.

(b) Each party agrees, upon request, to furnish the other party with all information concerning itself, its Subsidiaries, directors, officers and stockholders and such other matters as may be reasonably necessary or advisable in connection with any filing, notice or application made by or on behalf of such other party or any of its Subsidiaries to any third party or Governmental Authority.

7.10 Indemnification.

(a) Following the Effective Date and for a period of six years thereafter, United shall indemnify, defend and hold harmless the present directors, officers and employees of Centra and its Subsidiaries (each, an “Indemnified Party”) against all costs or expenses (including reasonable attorneys’ fees), judgments, fines, losses, claims, damages or liabilities (collectively, “Costs”) incurred in connection with any claim, action, suit, proceeding or investigation, whether civil, criminal, administrative or investigative, arising out of actions or omissions occurring at or prior to the Effective Time (including the transactions contemplated by this Agreement), whether asserted or claimed prior to, at or after the Effective Time to the fullest extent that Centra is permitted or required to indemnify (and advance expenses to) its directors and officers under the laws of the State of West Virginia, the Centra Certificate, the Centra By-Laws and any agreement as in effect on the date hereof; provided that any determination required to be made with respect to whether an officer’s, director’s or employee’s conduct complies with the standards set forth under West Virginia law, the Centra Certificate, the Centra By-Laws and any agreement shall be made by independent counsel (which shall not be counsel that provides material services to United) selected by United and reasonably acceptable to such officer or director. United shall comply with any indemnification agreements between Centra or its Subsidiaries on the one hand, and their respective directors and officers on the other hand; provided, however, that each of Centra and its Subsidiaries, as applicable, agrees to exercise its reasonable best efforts to obtain amendments to each indemnification agreement applicable to it prior to the Effective Date so that terms of any such agreement aligns with the time periods set forth in this Section 7.10.

(b) For a period of six years from and after the Effective Time, United shall (i) maintain in effect (A) the current provisions regarding indemnification of and the advancement of expenses to Indemnified Parties contained in the Centra Certificate and Centra By-Laws (or comparable organizational documents) of each of Centra and its Subsidiaries and (B) any indemnification agreements of Centra and its Subsidiaries with or for the benefit of any Indemnified Parties existing on the date hereof, and (ii) indemnify the Indemnified Parties to the fullest extent permitted by applicable law. For purposes of the foregoing: (i) in the event any claim is asserted within the six year period during which Centra and its Subsidiaries, (A) all such rights in respect of any such claim shall continue until disposition thereof and (B) the Indemnified Party shall be entitled to advancement of expenses within five business days following receipt of any such claim involving such Indemnified Party; and (ii) any determination required to be made with respect to whether an Indemnified Party’s conduct complies with the standards set forth under WVBCA, the Centra Certificate or Centra By-Laws or any such agreement, as the case may be, for purposes of the allowance of indemnification or advancement of expenses, shall be made by independent legal counsel selected by such Indemnified Party and reasonably acceptable to United. The fees and expenses of such independent legal counsel shall be paid for by United.

(c) For a period of six years from the Effective Time, United shall use its reasonable best efforts to provide that portion of director’s and officer’s liability insurance that

serves to reimburse the present and former officers and directors of Centra or any of its Subsidiaries (determined as of the Effective Time) (as opposed to Centra) with respect to claims against such directors and officers arising from facts or events which occurred before the Effective Time, which insurance shall contain at least the same coverage and amounts, and contain terms and conditions no less advantageous, as that coverage currently provided by Centra; provided, that in no event shall United be required to expend more than 150% of the current amount expended by Centra (the “Insurance Amount”) to maintain or procure such directors and officers insurance coverage; provided, further, that if United is unable to maintain or obtain the insurance called for by this Section 7.10(b), United shall use its reasonable best efforts to obtain as much comparable insurance as is available for the Insurance Amount; provided, further, that officers and directors of Centra or any Subsidiary may be required to make application and provide customary representations and warranties to United’s insurance carrier for the purpose of obtaining such insurance.

(d) Any Indemnified Party wishing to claim indemnification under Section 7.10(a), upon learning of any claim, action, suit, proceeding or investigation described above, shall promptly notify United thereof; provided that the failure so to notify shall not affect the obligations of United under Section 7.10(a) unless and to the extent that United is actually prejudiced as a result of such failure.

(e) If United or any of its successors or assigns shall consolidate with or merge into any other entity and shall not be the continuing or surviving entity of such consolidation or merger or shall transfer all or substantially all of its assets to any entity, then and in each case, proper provision shall be made so that the successors and assigns of United shall assume the obligations set forth in this Section 7.10.

(f) The provisions of this Section 7.10, (i) shall survive the Effective Time and are intended to be for the benefit of, and shall be enforceable by, each Indemnified Party and his or her heirs and representatives, and (ii) are in addition to, and not in substitution for, any other rights to indemnification or contribution that any such person may have by agreement or otherwise.

7.11 Benefit Plans.

(a) It is the intention of United that at and following the Effective Time (i) it will provide employees of Centra with employee benefit plans substantially similar in the aggregate to those provided to similarly situated employees of United, except with respect to the United Pension Plan, (ii) United shall cause any and all pre-existing condition limitations (to the extent such limitations did not apply to a pre-existing condition under the Compensation and Benefit Plans) and eligibility waiting periods under group health plans to be waived with respect to such participants and their eligible dependents, and (iii) all Centra employees will receive credit for years of service with Centra and its predecessors prior to the Effective Time for purposes of eligibility and vesting (but not for purposes of benefit accrual other than accrual for vacation or paid time off in the then current calendar year; provided, that, in accordance with United’s policies, no vacation or paid time off shall be thereafter carried over into a subsequent calendar year) under United’s benefit plans, except with respect to the United Pension Plan. All Centra employees and their eligible dependents will receive credit for co-payments, deductibles

and out-of-pocket maximums satisfied by employees and dependents under the Compensation and Benefit Plans. United shall maintain Centra’s existing employee benefit plans until such time as United has provided similar plans to Centra’s employees as contemplated in the preceding sentence. Centra employees shall not be entitled to accrual of benefits or allocation of contributions under United’s benefit plans based on years of service with Centra and its predecessors prior to the Effective Date, except with respect to any vacation or paid time off accrual.

(b) United agrees that each Centra employee who is involuntarily terminated by United (other than for cause) within six months of the Effective Date, shall receive a severance payment equal to two weeks of base pay (at the rate in effect on the termination date) for each year of service at Centra (with credit for partial years of service) with a maximum payment equal to 20 weeks of base pay.

(c) Centra shall use reasonable efforts to take such action as may be necessary to terminate its 401(k) plan, including the receipt of a favorable determination letter from the IRS relating to the termination of the 401(k) plan. In the event a favorable ruling is not issued, Centra agrees that termination of the 401(k) plan shall not occur and the 401(k) plan shall not be merged with United’s 401(k) plan.

7.12 Notification of Certain Matters. Each of Centra and United shall give prompt notice to the other of any fact, event or circumstance known to it that (i) is reasonably likely, individually or taken together with all other facts, events and circumstances known to it, to result in any Material Adverse Effect with respect to it or (ii) would cause or constitute a material breach of any of its representations, warranties, covenants or agreements contained herein.

7.13 Directors and Officers.

(a) United agrees to cause two individuals from Centra to be appointed as directors of United at the Effective Time. The individuals shall be chosen by Centra, subject to consent by United, which shall not be unreasonably withheld.

(b) United agrees to cause three individuals from Centra to be appointed to serve on the board of directors of United Bank at the effective time of the Bank Merger. The individuals chosen by Centra to serve as directors of United Bank shall be subject to the approval of the United Board.

7.14 Compliance with Laws. Each of Centra and its Subsidiaries shall comply in all material respects with all applicable federal, state, local and foreign statutes, laws, regulations, ordinances, rules, judgments, orders or decrees applicable thereto or to employees conducting such businesses.

ARTICLE VIII

Conditions to Consummation of the Merger

8.01 Conditions to Each Party’s Obligation to Effect the Merger. The respective obligation of each of United and Centra to consummate the Merger is subject to the fulfillment or written waiver by United and Centra prior to the Effective Time of each of the following conditions:

(a) Stockholder Approval. This Agreement shall have been duly approved by the requisite vote of the stockholders of Centra.

(b) Regulatory Approvals. All regulatory approvals required to consummate the transactions contemplated hereby shall have been obtained and shall remain in full force and effect and all statutory waiting periods in respect thereof shall have expired and no such approvals shall contain any conditions, restrictions or requirements applicable either before or after the Effective Time which the United Board reasonably determines in good faith would have a Material Adverse Effect on United and its Subsidiaries taken as a whole taking into account the consummation of the Merger in making such determination.

(c) No Injunction. No Governmental Authority of competent jurisdiction shall have enacted, issued, promulgated, enforced or entered any statute, rule, regulation, judgment, decree, injunction or other order (whether temporary, preliminary or permanent) that is in effect and prohibits consummation of the transactions contemplated by this Agreement.

(d) Registration Statement. The Registration Statement shall have become effective under the Securities Act and no stop order suspending the effectiveness of the Registration Statement shall have been issued and no proceedings for that purpose shall have been initiated or threatened by the SEC.

(e) Listing. To the extent required, the shares of United Common Stock to be issued in the Merger shall have been approved for listing on the NASDAQ, subject to official notice of issuance.

8.02 Conditions to Obligation of Centra. The obligation of Centra to consummate the Merger is also subject to the fulfillment or written waiver by Centra prior to the Effective Time of each of the following conditions:

(a) Representations and Warranties. The representations and warranties of United set forth in this Agreement shall be true and correct, subject to the standard set forth in Section 6.02, as of the date of this Agreement and as of the Effective Date as though made on and as of the Effective Date (except that representations and warranties that by their terms speak as of the date of this Agreement or some other date shall be true and correct as of such date), and Centra shall have received a certificate, dated the Effective Date, signed on behalf of United by the Chief Executive Officer and the Chief Financial Officer of United to such effect.

(b) Performance of Obligations of United. United shall have performed in all material respects all obligations required to be performed by it under this Agreement at or prior to the Effective Time, and Centra shall have received a certificate, dated the Effective Date, signed on behalf of United by the Chief Executive Officer and the Chief Financial Officer of United to such effect.

(c) Opinion of Centra’s Counsel. Centra shall have received an opinion of DLA Piper LLP (US), counsel to Centra, dated the Effective Date, to the effect that, on the basis

of facts, representations and assumptions set forth in such opinion, (i) the Merger constitutes a “reorganization” within the meaning of Section 368 of the Code and (ii) no gain or loss will be recognized by stockholders of Centra who receive shares of United Common Stock in exchange for shares of Centra Common Stock, except that gain or loss may be recognized as to cash received as Merger Consideration and cash received in lieu of fractional share interests. In rendering its opinion, DLA Piper LLP (US) may require and rely upon representations contained in letters from Centra, United, officers and employees of Centra or United, and others.

8.03 Conditions to Obligation of United. The obligation of United to consummate the Merger is also subject to the fulfillment or written waiver by United prior to the Effective Time of each of the following conditions:

(a) Representations and Warranties. The representations and warranties of Centra set forth in this Agreement shall be true and correct, subject to the standard set forth in Section 6.02, as of the date of this Agreement and as of the Effective Date as though made on and as of the Effective Date (except that representations and warranties that by their terms speak as of the date of this Agreement or some other date shall be true and correct as of such date) and United shall have received a certificate, dated the Effective Date, signed on behalf of Centra by the Chief Executive Officer and the Chief Financial Officer of Centra to such effect.

(b) Performance of Obligations of Centra. Centra shall have performed in all material respects all obligations required to be performed by it under this Agreement at or prior to the Effective Time, and United shall have received a certificate, dated the Effective Date, signed on behalf of Centra by the Chief Executive Officer and the Chief Financial Officer of Centra to such effect.

(c) Opinion of United’s Counsel. United shall have received an opinion of ▇▇▇▇▇▇ ▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Love LLP, special counsel to United, dated the Effective Date, to the effect that, on the basis of facts, representations and assumptions set forth in such opinion, the Merger constitutes a reorganization under Section 368 of the Code. In rendering its opinion, ▇▇▇▇▇▇ Rice ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Love LLP may require and rely upon representations contained in letters from United, Centra, officers and employees of United or Centra, and others.

ARTICLE IX

Termination

9.01 Termination. This Agreement may be terminated, and the Merger may be abandoned:

(a) Mutual Consent. At any time prior to the Effective Time, by the mutual consent of United and Centra, if the Board of Directors of each so determines by vote of a majority of the members of its entire Board.

(b) Breach. At any time prior to the Effective Time, by United or Centra (provided that the party seeking termination is not then in material breach of any representation, warranty, covenant or other agreement contained herein), if its Board of Directors so determines by vote of a majority of the members of its entire Board, in the event of either: (i) a breach by the

other party of any representation or warranty contained herein (subject to the standard set forth in Section 6.02), which breach cannot be or has not been cured within 30 days after the giving of written notice to the breaching party of such breach; or (ii) a material breach by the other party of any of the covenants or agreements contained herein, which material breach cannot be or has not been cured within 30 days after the giving of written notice to the breaching party of such breach.

(c) Delay. At any time prior to the Effective Time, by United or Centra, if its Board of Directors so determines by vote of a majority of the members of such party’s entire Board of Directors, in the event that the Merger is not consummated by October 31, 2011, except to the extent that the failure of the Merger then to be consummated arises out of or results from the knowing action or inaction of the party seeking to terminate pursuant to this Section 9.01(c).

(d) Failure of United Conditions. By United (provided that United is not then in material breach of any representation, warranty, covenant or other agreement contained herein) if the conditions in Sections 8.03(a) or 8.03(b) of this Agreement have not been satisfied by Centra within five business days of satisfaction of the last condition in Section 8.01 to be satisfied (and cannot be, or have not been, cured by Centra within 30 days after the giving of written notice of such failure) and have not been waived by United.

(e) Failure of Centra Conditions. By Centra (provided that Centra is not then in material breach of any representation, warranty, covenant or other agreement contained herein) if the conditions in Sections 8.02(a) or 8.02(b) of this Agreement have not been satisfied by United within five business days of satisfaction of the last condition in Section 8.01 to be satisfied (and cannot be, or have not been, cured by United within 30 days after the giving of written notice of such failure) and have not been waived by Centra.

(f) No Approval. By Centra or United, if its Board of Directors so determines by a vote of a majority of the members of its entire Board of Directors, in the event (i) the approval of any Governmental Authority required for consummation of the Merger and the other transactions contemplated by this Agreement shall have been denied by final nonappealable action of such Governmental Authority or (ii) any stockholder approval required by Section 8.01(a) herein is not obtained at the Centra Meeting.

(g) Failure to Recommend, Etc. At any time prior to the Centra Meeting, by United if the Centra Board shall have failed to make its recommendation referred to in Section 7.02, withdrawn such recommendation or modified or changed such recommendation in a manner adverse in any respect to the interests of United.

(h) Superior Proposal. By Centra, if the Centra Board so determines by a vote of the majority of the members of its entire board, at any time prior to the Centra Meeting, in order to concurrently enter into an agreement with respect to an unsolicited Acquisition Proposal that was received and considered by Centra in compliance with Section 7.06 and that would, if consummated, result in a transaction that is more favorable to Centra’s stockholders from a financial point of view than the Merger (a “Superior Proposal”); provided, that (i) this Agreement may be terminated by Centra pursuant to this Section 9.01(h) only after the fifth business day following United’s receipt of written notice from Centra advising United that

Centra is prepared to enter into an agreement with respect to a Superior Proposal and only if, during such five business day period, United does not make an offer to Centra that the Centra Board determines in good faith, after consultation with its financial and legal advisors, is at least as favorable as the Superior Proposal and (ii) Centra pays the Fee specified in Section 9.03.

(i) Decline in United Common Stock Price. By Centra, if the Centra Board so determines by a vote of the majority of the members of the entire Centra Board, at any time during the five-day period commencing with the Determination Date, if both of the following conditions are satisfied:

(i) The number obtained by dividing the Average Closing Price by the Starting Price (as defined below) (the “United Ratio”) shall be less than 0.80; and

(ii) (x) the United Ratio shall be less than (y) the number obtained by dividing the Final Index Price by the Index Price on the Starting Date (each as defined below) and subtracting 0.15 from the quotient in this clause (ii) (y) (such number in this clause (ii) (y) being referred to herein as the “Index Ratio”);

subject, however, to the following three sentences. If Centra elects to exercise its termination right pursuant to this Section 9.01(i), it shall give written notice to United (provided that such notice of election to terminate may be withdrawn at any time within the aforementioned five-day period). During the five-day period commencing with its receipt of such notice, United shall have the option to increase the consideration to be received by the holders of Centra Common Stock hereunder, by adjusting the Exchange Ratio (calculated to the nearest one one-thousandth) to equal the lesser of (x) a number (rounded to the nearest one one-thousandth) obtained by dividing (A) the product of the Starting Price, 0.80 and the Exchange Ratio (as then in effect) by (B) the Average Closing Price and (y) a number (rounded to the nearest one one-thousandth) obtained by dividing (A) the product of the Index Ratio and the Exchange Ratio (as then in effect) by (B) the United Ratio. If United so elects within such five-day period, it shall give prompt written notice to Centra of such election and the revised Exchange Ratio, whereupon no termination shall have occurred pursuant to this Section 9.01(i) and this Agreement shall remain in effect in accordance with its terms (except as the Exchange Ratio shall have been so modified.)

For purposes of this Section 9.01(i), the following terms shall have the meanings indicated:

“Final Index Price” shall mean the average of the Index Prices for the 20 consecutive full trading days ending on the trading day prior to the Determination Date.

“Index Group” shall mean the NASDAQ Bank Index.

“Index Price” shall mean the closing price on such date of the Index Group.

“Starting Date” shall mean the last trading day immediately preceding the date of the first public announcement of entry into this Agreement.

“Starting Price” shall mean the closing price of a share of United Common Stock on the NASDAQ (as reported in The Wall Street Journal, or if not reported therein, in another authoritative source) on the Starting Date.

9.02 Effect of Termination and Abandonment. In the event of termination of this Agreement and the abandonment of the Merger pursuant to this Article IX, no party to this Agreement shall have any liability or further obligation to any other party hereunder except (i) as set forth in Section 9.03, (ii) that termination will not relieve a breaching party from liability for any willful breach of this Agreement giving rise to such termination, and (iii) Sections 7.03(b), 7.05(b), 9.02, 9.03, 10.05, 10.06, 10.07, 10.08, 10.09 and 10.10 shall survive any termination of this Agreement.

9.03 Fees and Expenses.

(a) In the event that, (i) this Agreement shall be terminated by Centra pursuant to Section 9.01(h), then Centra shall pay United promptly (but in no event later than two business days after the date of termination of this Agreement by Centra) a fee of $7,500,000 (the “Fee”), which amount shall be payable in immediately available funds or (ii) this Agreement is terminated by United pursuant to Section 9.01(g), and prior to that date that is 12 months after such termination, Centra or any of its Subsidiaries enters into any Acquisition Agreement or any Acquisition Proposal is consummated (regardless of whether such Acquisition Proposal is consummated before or after termination of this Agreement), then Centra shall pay United the Fee on the earlier of such date of execution or consummation, which amount shall be payable in immediately available funds. For the purposes of this Section, “Acquisition Agreement” shall mean any letter of intent, memorandum of understanding, agreement in principle, acquisition agreement, merger agreement, or other similar agreement constituting or related to, or which is intended to or would be reasonably likely to lead to, any Acquisition Proposal. For purposes of the foregoing, the term “Acquisition Proposal” shall have the meaning set forth in the definition of “Acquisition Proposal” in Section 1.01 except that the references to “24.99%” shall be deemed to be references to “51%.” In no event shall Centra be required to pay the Fee on more than one occasion.

(b) In the event that Centra shall fail to pay the Fee when due, then Centra shall pay the Fee plus the costs and expenses actually incurred by United (including, without limitation, fees and expenses of counsel) in connection with the collection of the Fee under the enforcement of this Section 9.03, together with interest on such unpaid Fee and costs and expenses, commencing on the date that the Fee became due, at a rate equal to the rate of interest publicly announced by Citibank, N.A., from time to time, in the City of New York, as such bank’s Base Rate plus 2.00%.

ARTICLE X

Miscellaneous

10.01 Survival. No representations, warranties, agreements and covenants contained in this Agreement shall survive the Effective Time (other than Sections 2.02(b), 7.10, 7.11, 7.13,

and this Article X and those other covenants and agreements contained in this Agreement that by their terms apply or are to be performed in whole or in part after the Effective Time, all of which shall survive the Effective Time).

10.02 Waiver; Amendment. Prior to the Effective Time, any provision of this Agreement may be (i) waived by the party benefited by the provision, or (ii) amended or modified at any time, by an agreement in writing between the parties hereto executed in the same manner as this Agreement, except that after the Centra Meeting, this Agreement may not be amended if it would violate the WVBCA.

10.03 Assignment. This Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective successors and assigns, but shall not be assigned by any party without the prior written consent of the other parties.

10.04 Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed to constitute an original.

10.05 Governing Law. This Agreement shall be governed by, and interpreted in accordance with, the laws of the State of West Virginia applicable to contracts made and to be performed entirely within such State (except to the extent that mandatory provisions of federal law are applicable). The parties hereby consent and submit to the exclusive jurisdiction and venue of any state or federal court located in the State of West Virginia.

10.06 Expenses. Subject to the obligations of Centra set forth in Section 9.03, each party hereto will bear all expenses incurred by it in connection with this Agreement and the transactions contemplated hereby, except that printing expenses shall be shared equally between Centra and United.

10.07 Notices. All notices, requests and other communications hereunder to a party shall be in writing and shall be deemed given if personally delivered, telecopied (with confirmation) or mailed by registered or certified mail (return receipt requested) to such party at its address set forth below or such other address as such party may specify by notice to the parties hereto.

If to Centra, to:

Centra Financial Holdings, Inc.

▇▇▇ ▇▇▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇

▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇

Chief Executive Officer

With a copy to:

DLA Piper LLP (US)

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇, ▇.▇.

▇▇▇▇▇▇▇▇▇▇, ▇.▇. ▇▇▇▇▇

Facsimile: (▇▇▇)▇▇▇-▇▇▇▇

Attn: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇ III, Esq.

▇▇▇▇▇▇▇ ▇. ▇▇▇▇, Esq.

▇▇▇▇▇▇▇ ▇▇▇▇▇ PLLC

▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇

▇.▇. ▇▇▇ ▇▇▇

▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇

Facsimile: (▇▇▇) ▇▇▇-▇▇▇▇

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Esq.

If to United, to:

United Bankshares, Inc.

▇▇▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇

▇▇▇▇▇▇▇▇▇▇▇, ▇▇ ▇▇▇▇▇

Attn: ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇

Chairman of the Board and Chief Executive Officer

▇▇▇▇▇▇ ▇▇▇▇▇▇

Chief Financial Officer

With a copy to:

▇▇▇▇▇▇ Rice ▇▇▇▇▇▇▇ ▇▇▇▇▇ & Love LLP

▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇ (25301)

P. O. ▇▇▇ ▇▇▇▇

▇▇▇▇▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇-▇▇▇▇

Facsimile: (▇▇▇) ▇▇▇-▇▇▇▇

Attn: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇, Esq.

10.08 Entire Understanding; No Third Party Beneficiaries. This Agreement represents the entire understanding of the parties hereto with reference to the transactions contemplated hereby and this Agreement supersedes any and all other oral or written agreements heretofore made. Except for Section 7.10, which shall inure to the benefit of the Persons referred to in such Sections, nothing in this Agreement expressed or implied, is intended to confer upon any person, other than the parties hereto or their respective successors, any rights, remedies, obligations or liabilities under or by reason of this Agreement.

10.09 Severability. The provisions of this Agreement will be deemed severable, and the invalidity or unenforceability of any provision will not affect the validity or enforceability of the other provisions hereof. If any provision of this Agreement, or the application thereof to any party or Person or any circumstance, is found by a court or other Governmental Authority of competent jurisdiction to be invalid or unenforceable, (a) a suitable and equitable provision will be substituted therefor in order to carry out, so far as may be valid and enforceable, the intent and purpose of such invalid or unenforceable provision, and (b) the remainder of this Agreement and the application of such provision to other parties, Persons or circumstances will not be affected by such invalidity or unenforceability, nor will such invalidity or unenforceability affect the validity or enforceability of such provision, or the application thereof, in any other jurisdiction.

10.10 Disclosures. Any disclosure made in any document delivered pursuant to this Agreement or referred to or described in writing in any Section of this Agreement or any schedule attached hereto shall be deemed to be disclosure for purposes of any other Section to which the relevance of such item is reasonably apparent.

10.11 Interpretation; Effect. When a reference is made in this Agreement to Sections, Exhibits or Disclosure Schedules, such reference shall be to a Section of, or Exhibit or Disclosure Schedule to, this Agreement unless otherwise indicated. The Disclosure Schedules as well as all other schedules and exhibits to this Agreement shall be deemed to be part of this Agreement and included in any reference to this Agreement. The table of contents and headings contained in this Agreement are for reference purposes only and are not part of this Agreement. Whenever the words “include,” “includes” or “including” are used in this Agreement, they shall be deemed to be followed by the words “without limitation.” Any pronoun used herein shall refer to any gender, either masculine, feminine or neuter, as the context requires. No provision of this Agreement shall be construed to require Centra, United or any of their respective Subsidiaries, affiliates or directors to take any action which would violate applicable law (whether statutory or common law), rule or regulation. The parties hereto acknowledge that each party hereto has reviewed, and has had an opportunity to have its counsel review, this Agreement and that any rule of construction to the effect that any ambiguities are to be resolved against the drafting party, or any similar rule operating against the drafter of an agreement, shall not be applicable to the construction or interpretation of this Agreement.

10.12 Publicity. United and Centra each shall consult with the other prior to issuing any press releases or otherwise making public announcements with respect to the Merger and the other transactions contemplated hereby and prior to making any filings with respect to any third party and/or any Governmental Authority with respect thereto, except as may be required by law or by obligations pursuant to any listing agreement with, or rules of, the NASDAQ or in connection with the regulatory application process, in which case the party required to make the release or announcement shall consult with the other to the extent practicable. The parties agree that the initial press release to be issued with respect to the transactions contemplated by this Agreement shall be in the form heretofore agreed to by the parties.

[Signature page follows this page.]

IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed in counterparts by their duly authorized officers, all as of the day and year first above written.


CENTRA FINANCIAL HOLDINGS, INC.

	By:	/s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
		▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
	Title:	Chief Executive Officer

UNITED BANKSHARES, INC.

	By:	/s/ ▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
		▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
	Title:	Chairman of the Board and Chief Executive Officer

Signature Page to the Agreement and Plan of Reorganization

FORM OF

SUPPLEMENT FOR MERGER SUB ACCESSION

TO MERGER AGREEMENT

This SUPPLEMENT FOR MERGER SUB ACCESSION TO MERGER AGREEMENT, dated as of the day of , 2010 (this “Supplement”), to the Agreement and Plan of Reorganization, dated as of , 2010 (as may be amended from time to time in accordance with the terms thereof, the “Agreement”), by and between United Bankshares, Inc., a West Virginia corporation (“United”) and Centra Financial Holdings, Inc., a West Virginia corporation (“CFHI”).

WHEREAS, terms used but not otherwise defined herein have the meanings specified in the Agreement; and

WHEREAS, pursuant to Section 2.01 of the Agreement, United has determined to consummate the Merger in part through the merger of CFHI with and into , a corporation (the “Merger Sub”).

NOW, THEREFORE, in consideration of the premises and of the mutual covenants, representations and warranties contained in the Agreement, the parties agree as follows:

1. Agreement. Merger Sub agrees (i) to be bound by and subject to the terms of the Agreement, (ii) to become a party to the Agreement, as provided by Section 2.01 thereof, (iii) to perform all obligations and agreements set forth therein, and (iv) to adopt the Agreement with the same force and effect as if the undersigned were originally a party thereto.

2. Notice. Any notice required to be provided pursuant to Section 10.06 of the Agreement shall be given to the Merger Sub at the following address:

[Insert address and facsimile number]

IN WITNESS WHEREOF, this Supplement has been duly executed and delivered by the undersigned, duly authorized thereunto as of the date first hereinabove written.


[Insert name of Merger Sub ]

By:
Name:
Title:

CENTRA FINANCIAL HOLDINGS, INC.

By:
Name:
Title:

UNITED BANKSHARES, INC.

By:
Name:		▇▇▇▇▇▇▇ ▇. ▇▇▇▇▇
Title:		Chairman of the Board and Chief Executive Officer

List of Disclosure Schedules

to the

Agreement and Plan of Reorganization

dated December 15, 2010

between

United Bankshares, Inc. and Centra Financial Holdings, Inc.

Centra Disclosure Schedule


Schedule 5.01(a)		Forebearances of Centra; Ordinary Course
Schedule 5.01(b)		Forebearances of Centra; Capital Stock
Schedule 5.01(c)		Forebearances of Centra; Dividends, Etc.
Schedule 5.01(d)		Forebearances of Centra; Compensation; Employment Agreements, Etc.
Schedule 5.01(e)		Forebearances of Centra; Benefit Plans
Schedule 5.01(f)		Forebearances of Centra; Dispositions
Schedule 5.01(g)		Forebearances of Centra; Acquisition
Schedule 5.01(h)		Forebearances of Centra; Capital Stock
Schedule 5.01(i)		Forebearances of Centra; Accounting Methods
Schedule 5.01(j)		Forebearances of Centra; Contracts
Schedule 5.01(k)		Forebearances of Centra; Claims
Schedule 5.01(l)		Forebearances of Centra; Adverse Actions
Schedule 5.01(m)		Forebearances of Centra; Risk Management
Schedule 5.01(n)		Forebearances of Centra; Indebtedness
Schedule 5.01(o)		Forebearances of Centra; Commitments
Schedule 6.03(a)		Organization and Standing
Schedule 6.03(b)		Capitalization
Schedule 6.03(c)		Subsidiaries
Schedule 6.03(c)(i)		Subsidiaries
Schedule 6.03(c)(ii)		Subsidiaries
Schedule 6.03(d)		Corporate Power
Schedule 6.03(e)		Corporate Authority
Schedule 6.03(f)(i)		Consents and Approvals; No Defaults
Schedule 6.03(f)(ii)		Consents and Approvals; No Defaults
Schedule 6.03(g)(i)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(g)(ii)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(g)(iii)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(g)(iv)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(g)(v)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(g)(vi)		Financial Reports; Absence of Certain Charges or Events
Schedule 6.03(h)		Litigation
Schedule 6.03(i)(i)		Regulatory Matters
Schedule 6.03(g)(ii)		Regulatory Matters
Schedule 6.03(g)(iii)		Regulatory Matters
Schedule 6.03(j)(i)		Compliance with Laws
Schedule 6.03(j)(ii)		Compliance with Laws
Schedule 6.03(j)(iii)		Compliance with Laws
Schedule 6.03(j)(iv)		Compliance with Laws


Schedule 6.03(j)(v)		Compliance with Laws
Schedule 6.03(k)		Material Contracts; Defaults
Schedule 6.03(l)		Brokers
Schedule 6.03(m)(i)		Employee Benefit Plans
Schedule 6.03(m)(ii)		Employee Benefit Plans
Schedule 6.03(m)(iii)		Employee Benefit Plans
Schedule 6.03(m)(iv)		Employee Benefit Plans
Schedule 6.03(m)(v)		Employee Benefit Plans
Schedule 6.03(m)(vi)		Employee Benefit Plans
Schedule 6.03(m)(vii)		Employee Benefit Plans
Schedule 6.03(m)(viii)		Employee Benefit Plans
Schedule 6.03(m)(ix)		Employee Benefit Plans
Schedule 6.03(m)(x)		Employee Benefit Plans
Schedule 6.03(m)(xi)		Employee Benefit Plans
Schedule 6.03(m)(xii)		Employee Benefit Plans
Schedule 6.03(m)(xiii)		Employee Benefit Plans
Schedule 6.03(n)		Labor Matters
Schedule 6.03(o)		Takeover Laws
Schedule 6.03(p)		Environmental Matters
Schedule 6.03(q)		Tax Matters
Schedule 6.03(q)(i)		Tax Matters
Schedule 6.03(r)		Risk Management Instruments
Schedule 6.03(s)		Books and Records
Schedule 6.03(t)		Insurance

United Disclosure Schedule


Schedule 6.04(g)(i)		Financial Reports and SEC Documents
Schedule 6.04(g)(iii)		Reports
Schedule 6.04(q)		Insurance

AGREEMENT AND PLAN OF REORGANIZATION dated as of December 15, 2010 by and between UNITED BANKSHARES, INC. and CENTRA FINANCIAL HOLDINGS, INC.

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