Document:

exv10w1

Exhibit 10.1

AMENDMENT NO. 1

     THIS AMENDMENT NO. 1, dated as of May 12, 2010 (this “Amendment”), of that certain
Credit Agreement referenced below is by and among HEALTHCARE REALTY TRUST INCORPORATED, a Maryland
corporation (the “Borrower”), the Lenders and BANK OF AMERICA, N.A., as Administrative
Agent. Capitalized terms used but not otherwise defined herein shall have the meanings provided in
the Credit Agreement.

W I T N E S S E T H

     WHEREAS, a $550 million revolving credit facility has been established in favor of the
Borrower pursuant to the terms of that Amended and Restated Credit Agreement dated as of September
30, 2009 (as amended and modified, the “Credit Agreement”), among the Borrower, the Lenders
identified therein, and Bank of America, N.A., as Administrative Agent;

     WHEREAS, the Borrower has requested certain modifications to the terms of the Credit
Agreement; and

     WHEREAS, the Lenders have agreed to the requested modifications on the terms and conditions
set forth herein;

     NOW, THEREFORE, in consideration of these premises and other good and valuable consideration,
the receipt and sufficiency of which is hereby acknowledged, the parties agree as follows:

     1. Amendment to Credit Agreement. The defined term “Consolidated EBITDA” in Section
1.01 of the Credit Agreement is amended to read as follows:

     “Consolidated EBITDA” means, for any period for the Consolidated Group, the sum
of (a) net income attributable to common stockholders (or its equivalent) plus (b)
to the extent deducted in determining net income attributable to common stockholders (or its
equivalent), (i) Consolidated Interest Expense, (ii) the amount of income taxes (or
minus the amount of tax benefits), (iii) depreciation and amortization, and (iv)
expenses reducing net income attributable to common stockholders (or its equivalent) during
such period which do not represent a cash expenditure in such period or any future period
and minus all items increasing net income attributable to common stockholders (or
its equivalent) during such period which do not represent a cash receipt in such period or
in any future period, in each case on a consolidated basis determined in accordance with
GAAP. Except as otherwise expressly provided, the applicable period shall be for the four
(4) consecutive fiscal quarters ending as of the date of determination.

     2. Condition Precedent. This Amendment shall be effective immediately upon receipt by
the Administrative Agent of counterparts of this Agreement duly executed by the Borrower and the
Required Lenders.

     3. Effectiveness of Amendment. Upon satisfaction of the condition precedent set forth
in Section 2 hereof, all references to the Credit Agreement in each of the Credit Documents
shall hereafter mean the Credit Agreement as amended by this Amendment. Except as specifically
amended hereby or otherwise agreed, the Credit Agreement is hereby ratified and confirmed and shall
remain in full force and effect according to its terms.

     4. Representations and Warranties; Defaults. The Borrower affirms the following:

     (a) all necessary action to authorize the execution, delivery and performance of this
Amendment has been taken;

     (b) after giving effect to this Amendment, the representations and warranties set forth
in the Credit Agreement and the other Credit Documents are true and correct in all material
respects as of the date hereof (except those which expressly relate to an earlier period);
and

     (c) after giving effect to this Amendment, no Default or Event of Default shall exist.

38

 

     5. Full Force and Effect. Except as modified hereby, all of the terms and provisions
of the Credit Agreement and the other Credit Documents (including schedules and exhibits thereto)
shall remain in full force and effect.

     6. Affirmation of Obligations. The Borrower (a) affirms all of its obligations under
the Credit Documents and (b) agrees that this Amendment and all documents executed in connection
herewith do not operate to reduce or discharge their obligations under any Credit Document.

     7. Expenses. The Borrower agrees to pay all reasonable costs and expenses of the
Administrative Agent in connection with the preparation, execution and delivery of this Amendment,
including the reasonable fees and expenses of Moore & Van Allen, PLLC.

     8. Counterparts. This Amendment may be executed in any number of counterparts, each
of which when so executed and delivered shall be deemed an original, and it shall not be necessary
in making proof of this Amendment to produce or account for more than one such counterpart.
Delivery by any party hereto of an executed counterpart of this Amendment by facsimile shall be
effective as such party’s original executed counterpart and shall constitute a representation that
such party’s original executed counterpart will be delivered.

     9. Amendment is a Credit Document. Each of the parties hereto hereby agrees that this
Amendment is a Credit Document.

     10. Governing Law. This Amendment shall be governed by, and construed in accordance
with, the law of the State of New York.

[Signatures on Following Pages]

     IN WITNESS WHEREOF, each of the parties hereto has caused a counterpart of this Amendment to
be duly executed and delivered as of the date first above written.

	 	 	 	 	 	 	 

	BORROWER:	 	HEALTHCARE REALTY TRUST
	 	 	INCORPORATED
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Scott W. Holmes
 

Scott W. Holmes
	 	 
	 

	 	Title:
	 	Executive Vice President and Chief Financial Officer	 	 
	 
	 	 	 	 	 	 
	 ADMINISTRATIVE AGENT:	 	BANK OF AMERICA, N.A.,
	 	 	as Administrative Agent
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Amie L. Edwards
 

Amie L. Edwards
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 

39

 

	 	 	 	 	 	 	 

	LENDERS:	 	BANK OF AMERICA, N.A.,
	 	 	as L/C Issuer, Swing Line Lender and as a Lender
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Amie L. Edwards
 

Amie L. Edwards
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK
	 	 	NEW YORK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Thomas Randolph
 

Thomas Randolph
	 	 
	 

	 	Title:
	 	Managing Director	 	 
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ David Christiansen
 

David Christiansen
	 	 
	 

	 	Title:
	 	Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	BARCLAYS BANK PLC
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Noam Azachi
 

Noam Azachi
	 	 
	 

	 	Title:
	 	Assistant Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	JPMORGAN CHASE BANK, N.A.
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Ralph Totoonchi
 

Ralph Totoonchi
	 	 
	 

	 	Title:
	 	Vice President	 	 

40

 

	 	 	 	 	 	 	 

	 	 	REGIONS BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Craig Gardella
 

Craig Gardella
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	UBS AG STAMFORD BRANCH
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Irja R. Otsa
 

Irja R. Otsa
	 	 
	 

	 	Title:
	 	Associate Director	 	 
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Mary E. Evans
 

Mary E. Evans
	 	 
	 

	 	Title:
	 	Associate Director	 	 
	 
	 	 	 	 	 	 
	 	 	WACHOVIA BANK, NATIONAL ASSOCIATION
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Andrew W. Hussion
 

Andrew W. Hussion
	 	 
	 

	 	Title:
	 	Assistant Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	FIFTH THIRD BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ John Stringfield
 

John Stringfield
	 	 
	 

	 	Title:
	 	Vice President	 	 

41

 

	 	 	 	 	 	 	 

	 	 	SUNTRUST BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ John Cappellari
 

John Cappellari
	 	 
	 

	 	Title:
	 	Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	BANK OF MONTREAL
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Aaron Lanski
 

Aaron Lanski
	 	 
	 

	 	Title:
	 	Director	 	 
	 
	 	 	 	 	 	 
	 	 	BANK OF NOVA SCOTIA
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Karen L. Anillo
 

Karen L. Anillo
	 	 
	 

	 	Title:
	 	Director	 	 
	 
	 	 	 	 	 	 
	 	 	STATE BANK OF INDIA
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	Name:
	 	 

	 	 
	 

	 	Title:	 	 	 	 
	 
	 	 	 	 	 	 
	 	 	COMPASS BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	Eric J. Paul
 

Eric J. Paul
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 

42

 

	 	 	 	 	 	 	 

	 	 	PINNACLE NATIONAL BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Todd Carter
 

Todd Carter
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	AVENUE BANK
	 
	 	 	 	 	 	 
	 

	 	By:

Name:
	 	/s/ Carol S. Titus
 

Carol S. Titus
	 	 
	 

	 	Title:
	 	Senior Vice President	 	 
	 
	 	 	 	 	 	 
	 	 	CHANG HWA COMMERCIAL BANK, LTD., LOS ANGELES BRANCH
	 
	 	 	 	 	 	 
	 

	 	By:	 	 	 	 
	 

	 	Name:
	 	 

	 	 
	 

	 	Title:	 	 	 	 

43exv10w1

Exhibit 10.1

EXECUTION COPY

AGREEMENT AND PLAN OF MERGER

between

F.N.B. CORPORATION

and

COMM BANCORP, INC.

DATED AS OF AUGUST 9, 2010

 

 

TABLE OF CONTENTS

	 	 	 	 	 	 	 
	 	 	 	 	Page
	ARTICLE 1

	 	THE MERGER 	 	 	1	 
	1.1

	 	The Merger 	 	 	1	 
	1.2

	 	Effective Time 	 	 	2	 
	1.3

	 	Effects of the Merger 	 	 	2	 
	1.4

	 	Conversion of CBI Capital Stock 	 	 	2	 
	1.5

	 	CBI 401(k) Plan 	 	 	3	 
	1.6

	 	CBI DRP Plan 	 	 	3	 
	1.7

	 	FNB Capital Stock 	 	 	3	 
	1.8

	 	Articles of Incorporation and Bylaws of the Surviving Company
	 	 	4	 
	1.9

	 	Tax Consequences 	 	 	4	 
	1.10

	 	The Bank Merger 	 	 	4	 
	ARTICLE 2

	 	EXCHANGE OF SHARES 	 	 	4	 
	2.1

	 	FNB to Make Merger Consideration Available 	 	 	4	 
	2.2

	 	Exchange of Shares 	 	 	4	 
	2.3

	 	Adjustments for Dilution and Other Matters 	 	 	6	 
	2.4

	 	Withholding Rights 	 	 	7	 
	ARTICLE 3

	 	REPRESENTATIONS AND WARRANTIES OF CBI 	 	 	7	 
	3.1

	 	Corporate Organization 	 	 	7	 
	3.2

	 	Capitalization 	 	 	9	 
	3.3

	 	Authority; No Violation 	 	 	9	 
	3.4

	 	Consents and Approvals 	 	 	10	 
	3.5

	 	Reports 	 	 	11	 
	3.6

	 	Financial Statements 	 	 	12	 
	3.7

	 	Broker’s Fees 	 	 	13	 
	3.8

	 	Absence of Certain Changes or Events 	 	 	13	 
	3.9

	 	Material Adverse Effect 	 	 	13	 
	3.10

	 	Legal Proceedings 	 	 	13	 
	3.11

	 	Taxes and Tax Returns 	 	 	13	 
	3.12

	 	Employee Benefits 	 	 	16	 
	3.13

	 	Compliance with Applicable Law 	 	 	19	 
	3.14

	 	Contracts 	 	 	19	 
	3.15

	 	Agreements with Regulatory Agencies 	 	 	20	 
	3.16

	 	Undisclosed Liabilities 	 	 	20	 
	3.17

	 	Environmental Liability 	 	 	20	 
	3.18

	 	Real Property 	 	 	21	 
	3.19

	 	State Takeover Laws 	 	 	22	 
	3.20

	 	Reorganization 	 	 	22	 
	3.21

	 	Opinion 	 	 	22	 

(i) 

 

	 	 	 	 	 	 	 
	 	 	 	 	Page
	3.22

	 	Insurance	 	 	22	 
	3.23

	 	Investment Securities	 	 	23	 
	3.24

	 	Intellectual Property	 	 	23	 
	3.25

	 	Loans; Nonperforming and Classified Assets	 	 	23	 
	3.26

	 	Fiduciary Accounts	 	 	26	 
	3.27

	 	Allowance for Loan Losses	 	 	26	 
	3.28

	 	Subordinated Debt	 	 	26	 
	ARTICLE 4

	 	REPRESENTATIONS AND WARRANTIES OF FNB	 	 	26	 
	4.1

	 	Corporate Organization	 	 	26	 
	4.2

	 	Capitalization	 	 	27	 
	4.3

	 	Authority; No Violation	 	 	28	 
	4.4

	 	Consents and Approvals	 	 	28	 
	4.5

	 	Reports	 	 	29	 
	4.6

	 	Financial Statements	 	 	29	 
	4.7

	 	Broker’s Fees	 	 	30	 
	4.8

	 	Absence of Certain Changes or Events	 	 	30	 
	4.9

	 	Legal Proceedings	 	 	30	 
	4.10

	 	Taxes and Tax Returns	 	 	31	 
	4.11

	 	Employee Benefits	 	 	32	 
	4.12

	 	SEC Reports	 	 	35	 
	4.13

	 	Compliance with Applicable Law	 	 	35	 
	4.14

	 	Contracts	 	 	36	 
	4.15

	 	Agreements with Regulatory Agencies	 	 	36	 
	4.16

	 	Undisclosed Liabilities	 	 	36	 
	4.17

	 	Environmental Liability	 	 	37	 
	4.18

	 	Reorganization	 	 	37	 
	4.19

	 	Loans; Nonperforming and Classified Assets	 	 	38	 
	4.20

	 	Fiduciary Accounts	 	 	38	 
	4.21

	 	Allowance for Loan Losses	 	 	38	 
	ARTICLE 5

	 	COVENANTS RELATING TO CONDUCT OF BUSINESS	 	 	38	 
	5.1

	 	Conduct of Businesses Prior to the Effective Time	 	 	38	 
	5.2

	 	CBI Forbearances	 	 	39	 
	5.3

	 	FNB Forbearances	 	 	44	 
	5.4

	 	Voting Agreements	 	 	44	 
	ARTICLE 6

	 	ADDITIONAL AGREEMENTS	 	 	45	 
	6.1

	 	Regulatory Matters	 	 	45	 
	6.2

	 	Access to Information	 	 	47	 
	6.3

	 	CBI Shareholder Approval	 	 	48	 
	6.4

	 	Commercially Reasonable Efforts; Cooperation	 	 	48	 
	6.5

	 	NYSE Approval	 	 	48	 
	6.6

	 	Benefit Plans	 	 	48	 
	6.7

	 	Indemnification; Directors’ and Officers’ Insurance	 	 	50	 

(ii) 

 

	 	 	 	 	 	 	 
	 	 	 	 	Page
	6.8

	 	Additional Agreements	 	 	51	 
	6.9

	 	Advice of Changes	 	 	52	 
	6.10

	 	Dividends	 	 	52	 
	6.11

	 	Certain Actions	 	 	52	 
	6.12

	 	Transition	 	 	55	 
	6.13

	 	Tax Representation Letters	 	 	55	 
	6.14

	 	Moore Voting Agreement	 	 	55	 
	ARTICLE 7

	 	CONDITIONS PRECEDENT	 	 	55	 
	7.1

	 	Conditions to Each Party’s Obligation to Effect the Merger	 	 	55	 
	7.2

	 	Conditions to Obligation of FNB to Effect the Merger	 	 	56	 
	7.3

	 	Conditions to Obligation of CBI to Effect the Merger	 	 	57	 
	ARTICLE 8

	 	TERMINATION AND AMENDMENT	 	 	58	 
	8.1

	 	Termination	 	 	58	 
	8.2

	 	Effect of Termination	 	 	60	 
	8.3

	 	Amendment	 	 	60	 
	8.4

	 	Extension; Waiver	 	 	60	 
	ARTICLE 9

	 	GENERAL PROVISIONS	 	 	61	 
	9.1

	 	Closing	 	 	61	 
	9.2

	 	Nonsurvival of Representations, Warranties and Agreements	 	 	61	 
	9.3

	 	Expenses	 	 	61	 
	9.4

	 	Notices	 	 	62	 
	9.5

	 	Interpretation	 	 	63	 
	9.6

	 	Counterparts	 	 	63	 
	9.7

	 	Entire Agreement	 	 	63	 
	9.8

	 	Governing Law; Jurisdiction	 	 	63	 
	9.9

	 	Severability	 	 	64	 
	9.10

	 	Assignment; Third Party Beneficiaries	 	 	65	 
	 
	EXHIBITS:
	 	 	 	 	 	 
	Exhibit A

	 	Form of Bank Merger Agreement
	 	 	A-1	 
	Exhibit B

	 	Form of Voting Agreement
	 	 	B-1	 
	Exhibit C

	 	Form of Affiliates Letter
	 	 	C-1	 

(iii) 

 

INDEX OF DEFINED TERMS

	 	 	 	 	 
	 	 	Section
	Acquisition Proposal

	 	 	6.11	(e)
	Agreement

	 	Preamble

	Articles of Merger

	 	 	1.2	 
	Average Closing Price

	 	 	1.4	(d)
	Bank Merger

	 	 	1.10	 
	Bank Merger Agreement

	 	 	1.10	 
	BHC Act

	 	 	3.1	(b)
	Break-up Fee

	 	 	6.11	(f)
	Cash Amount

	 	 	1.4	(a)
	CBI

	 	Preamble

	CBI Articles

	 	 	3.1	(b)
	CBI Bank

	 	 	1.5	 
	CBI Benefit Plans

	 	 	3.12	 
	CBI Bylaws

	 	 	3.1	(b)
	CBI Common Stock

	 	 	1.4	(a)
	CBI Disclosure Schedule

	 	Art. 3 Preamble

	CBI DRP

	 	 	1.6	 
	CBI Employment Agreements

	 	 	3.12	 
	CBI Plan

	 	 	3.12	 
	CBI Qualified Plans

	 	 	3.12	(d)
	CBI Recommendation

	 	 	6.3	 
	CBI Regulatory Agreement

	 	 	3.15	 
	CBI Representatives

	 	 	6.11	(a)
	CBI Shareholders Meeting

	 	 	6.3	 
	CBI Subsidiaries

	 	 	3.1	(c)
	Certificates

	 	 	1.4	(b)
	Change in CBI Recommendation

	 	 	6.11	(b)
	Claim

	 	 	6.7	(a)
	Closing

	 	 	9.1	 
	Closing Date

	 	 	9.1	 
	Code

	 	Preamble

	Confidentiality Agreements

	 	 	6.2	(b)
	Contamination

	 	 	3.17	(b)
	Contracts

	 	 	5.2	(j)
	Controlled Group Liability

	 	 	3.12	 
	Credit Facilities

	 	 	5.2	(f)
	Delinquent Loans

	 	 	3.9	 
	DRSP Plan

	 	 	1.4	(c)

(iv) 

 

	 	 	 	 	 
	 	 	Section
	Effective Date

	 	 	1.2	 
	Effective Time

	 	 	1.2	 
	Environmental Laws

	 	 	3.17	(b)
	Environmental Liability

	 	 	3.17	(b)
	ERISA

	 	 	3.12	 
	ERISA Affiliate

	 	 	3.12	 
	Exchange Act

	 	 	4.6	 
	Exchange Agent

	 	 	2.1	 
	Exchange Fund

	 	 	2.1	 
	FBCA

	 	 	1.1	(a)
	FDIC

	 	 	3.4	 
	Federal Reserve Board

	 	 	3.4	 
	FINRA

	 	 	3.1	(c)
	FNB

	 	Preamble

	FNB 2009 10-K

	 	 	4.6	 
	FNB 10-Q

	 	 	4.16	 
	FNB Bank

	 	 	1.9	 
	FNB Benefit Plans

	 	 	4.11	 
	FNB Bylaws

	 	 	4.1	(b)
	FNB Charter

	 	 	4.1	(b)
	FNB Common Stock

	 	 	1.4	(a)
	FNB Disclosure Schedule

	 	Art. IV Preamble

	FNB Employment Agreement

	 	 	4.11	 
	FNB Plans

	 	 	6.6	(a)
	FNB Preferred Stock

	 	 	4.2	(a)
	FNB Qualified Plans

	 	 	4.11	(d)
	FNB Regulatory Agreement

	 	 	4.15	 
	FNB Reports

	 	 	4.12	 
	FNB Stock Plans

	 	 	4.2	(a)
	FNB Subsidiaries

	 	 	3.1	(c)
	GAAP

	 	 	3.1	(c)
	Governmental Entity

	 	 	3.4	 
	Hazardous Substances

	 	 	3.17	(b)
	HSR Act

	 	 	3.4	 
	Indemnified Parties

	 	 	6.7	(a)
	Injunction

	 	 	7.1	(e)
	Insurance Amount

	 	 	6.7	(c)
	Intellectual Property

	 	 	3.24	 
	IRS

	 	 	3.11	(a)
	Leased Properties

	 	 	3.18	(c)
	Leases

	 	 	3.18	(b)
	Loans

	 	 	3.25	(a)

(v) 

 

	 	 	 	 	 
	 	 	Section
	Material Adverse Effect

	 	 	3.1	(c)
	Materially Burdensome Regulatory Condition

	 	 6.1(d)

	Merger

	 	Preamble

	Merger Consideration

	 	 	1.4	(a)
	Multiemployer Plan

	 	 	3.12	 
	Multiple Employer Plan

	 	 	3.12	(f)
	NYSE

	 	 	3.1	(c)
	OCC

	 	 	3.4	 
	OREO

	 	 	3.25	(b)
	Other Regulatory Approvals

	 	 	3.4	 
	Owned Properties

	 	 	3.18	(a)
	PA DOB

	 	 	3.4	 
	Payment Event

	 	 	6.11	(g)
	PBCL

	 	 	1.1	(a)
	PBGC

	 	 	3.12	(e)
	Person

	 	 	3.10	(a)
	Proxy Statement

	 	 	3.4	 
	Registration Statement

	 	 	3.4	 
	Regulatory Agencies

	 	 	3.5	 
	Requisite Regulatory Approvals

	 	 	7.1	(c)
	SEC

	 	 	3.4	 
	Securities Act

	 	 	1.6	(d)
	SRO

	 	 	3.4	 
	Stock Amount

	 	 	1.4	(a)
	Subsidiary

	 	 	3.1	(c)
	Superior Proposal

	 	 	6.11	(e)
	Surviving Company

	 	Preamble

	Tax Returns

	 	 	3.11	(c)
	Taxes

	 	 	3.11	(b)
	The FINRA Stock Market

	 	 	3.1	(c)
	Third Party

	 	 	3.18	(d)
	Third Party Leases

	 	 	3.18	(d)
	Voting Agreement

	 	Preamble

	Withdrawal Liability

	 	 	3.12	 

(vi) 

 

AGREEMENT AND PLAN OF MERGER

     AGREEMENT AND PLAN OF MERGER, dated as of August 9, 2010 (this “Agreement”), between F.N.B.
CORPORATION, a Florida corporation (“FNB”), and COMM BANCORP, INC., a Pennsylvania corporation
(“CBI”).

W I T N E S S E T H:

     WHEREAS, the Boards of Directors of CBI and FNB have determined that it is in the best
interests of their respective companies and their shareholders to consummate the strategic business
combination transaction provided for in this Agreement in which CBI will, on the terms and subject
to the conditions set forth in this Agreement, merge with and into FNB (the “ Merger “), so that
FNB is the surviving company in the Merger (sometimes referred to in such capacity as the
“Surviving Company”); and

     WHEREAS, for federal income Tax, as defined in Section 3.10(b), purposes, it is intended that
the Merger shall qualify as a reorganization under the provisions of Section 368(a) of the Internal
Revenue Code of 1986, as amended (the “Code”);

     WHEREAS, the members of the CBI Board of Directors and Joseph P. Moore, Jr. will execute a
voting agreement in the form of Exhibit B (the “Voting Agreement”); and

     WHEREAS, the parties desire to make certain representations, warranties and agreements in
connection with the Merger and also to prescribe certain conditions to the Merger.

     NOW, THEREFORE, in consideration of the mutual covenants, representations, warranties and
agreements contained in this Agreement, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, and intending to be legally bound hereby, the parties
agree as follows:

ARTICLE 1

THE MERGER

     1.1 The Merger.

          (a) Subject to the terms and conditions of this Agreement, in accordance with the Pennsylvania
Business Corporation Law (the “PBCL”) and the Florida Business Corporation Act (the “FBCA”), at the
Effective Time as defined in Section 1.2, CBI shall merge with and into FNB. FNB shall be the
Surviving Company in the Merger, and shall continue its corporate existence under the laws of the
State of Florida. As of the Effective Time, the separate corporate existence of CBI shall cease.

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          (b) FNB may at any time change the method of effecting the combination and CBI shall cooperate
in such efforts, including by entering into an appropriate amendment to this Agreement, to the
extent such amendment only changes the method of effecting the business combination and does not
substantively affect this Agreement or the rights and obligations of the parties or their
respective shareholders under this Agreement; provided, however, that no such change shall (i)
alter or change the amount or kind of the Merger Consideration as defined in Section 1.4(a)
provided for in this Agreement, (ii) adversely affect the Tax treatment of CBI’s shareholders as a
result of receiving the Merger Consideration or the Tax treatment of either party pursuant to this
Agreement or (iii) materially impede or delay consummation of the transactions this Agreement
contemplates.

     1.2 Effective Time. The Merger shall become effective as set forth in the articles of
merger (the “Articles of Merger”) that shall be filed with the Secretary of State of the
Commonwealth of Pennsylvania and the Secretary of State of the State of Florida on or before the
Closing Date as defined in Section 9.1. The term “Effective Time” shall mean the date and time
when the Merger becomes effective as set forth in the Articles of Merger. “Effective Date” shall
mean the date on which the Effective Time occurs.

     1.3 Effects of the Merger.

          (a) Effects Under PBCL and FBCA. At and after the Effective Time, the Merger shall
have the effects set forth in Sections 1921 through 1932 of the PBCL and Sections 607.1101 through
607.11101 of the FBCA.

          (b) Directors and Executive Officers of the Surviving Company. The directors of the
Surviving Company immediately after the Merger shall be the directors of FNB immediately prior to
the Merger. The executive officers of the Surviving Company immediately after the Merger shall be
the executive officers of FNB immediately prior to the Merger.

     1.4 Conversion of CBI Capital Stock.

          (a) Subject to the provisions of this Agreement, each share of common stock, $.33 par value,
of CBI (“CBI Common Stock”) issued and outstanding immediately prior to the Effective Time shall,
by virtue of the Merger, no longer be outstanding and shall as of the Effective Time automatically
be converted into and shall thereafter represent the right to receive as merger consideration (the
“Merger Consideration”) (i) 3.4545 shares of common stock, $.01 par value, of FNB (“FNB Common
Stock”) and (ii) an amount in cash equal to $10.00, without interest. As used in this Agreement,
“Stock Amount” refers to the aggregate amount of shares of FNB Common Stock to be delivered at the
Closing pursuant to Section 1.4(a) and the “Cash Amount” refers to the aggregate amount of cash to
be delivered at the Closing pursuant to Section 1.4(a).

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          (b) At the Effective Time, the stock transfer books of CBI shall be closed as to holders of
CBI Common Stock immediately prior to the Effective Time and no transfer of CBI Common Stock by any
such holder shall thereafter be made or recognized. If, after the Effective Time, certificates
representing CBI Common Stock (“Certificates”) are properly presented in accordance with Section
2.2 of this Agreement to the Exchange Agent, as defined in Section 2.1, such Certificates shall be
canceled and converted into the right to receive the Merger Consideration and any dividends or
distributions to which the holder of such Certificates is entitled pursuant to Section 2.2(b).

          (c) Each holder of CBI Common Stock shall have the option of enrolling the whole shares of FNB
Common Stock issuable to such shareholder upon the consummation of the Merger in FNB’s Dividend
Reinvestment and Direct Stock Purchase Plan (the “DRSP Plan”)

          (d) Notwithstanding any other provision of this Agreement, each holder of CBI Common Stock who
would otherwise be entitled to receive a fractional share of FNB Common Stock, after taking into
account all Certificates delivered by such holder, shall receive an amount in cash, without
interest, rounded to the nearest cent, equal to the product obtained by multiplying (a) the Average
Closing Price, as defined below, as of the Closing Date by (b) the fraction of a share, calculated
to the nearest ten-thousandth when expressed in decimal form, of FNB Common Stock, to which such
holder would otherwise be entitled. No such holder shall be entitled to dividends or other rights
in respect of any such fractional shares. “Average Closing Price” means, as of any specified date,
the average composite closing price of FNB Common Stock on the NYSE as reported in New York Stock
Exchange Composite Transactions in The Wall Street Journal (Eastern Edition) or, if not reported
therein, in another mutually agreed upon authoritative source, for each of the 20 consecutive
trading days ending on and including the fifth such trading day prior to the specified date rounded
to the nearest ten-thousandth.

     1.5 CBI 401(K) Plan. Not later than the day immediately preceding the Closing Date,
CBI agrees to cause Community Bank and Trust Company (“CBI Bank”) to (i) terminate its 401(k) Plan
and (ii) return to CBI for cancellation shares of CBI Common Stock held by CBI Bank’s Trust
Department for future 401(k) Plan distributions that remain at that time undistributed to 401(k)
Plan participants, which shares of CBI Common Stock shall be canceled and not be subject to
conversion pursuant to Section 1.4.

     1.6 CBI DRP Plan. Not later than the day immediately preceding the Closing Date, CBI
agrees to terminate the Dividend Reinvestment Plan of Comm Bancorp, Inc. (the “CBI DRP Plan”) and
distribute any fractions prior to the Closing Date.

     1.7 FNB Capital Stock. At and after the Effective Time, each share of FNB capital
stock issued and outstanding immediately prior to the Effective Time shall remain issued and
outstanding and shall not be affected by the Merger.

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     1.8 Articles of Incorporation and Bylaws of the Surviving Company. FNB’s Charter, as
defined in Section 4.1(b), as in effect immediately prior to the Effective Time shall be the
articles of incorporation of the Surviving Company until thereafter amended in accordance with
applicable law. FNB’s Bylaws, as defined in Section 4.1(b), as in effect immediately prior to the
Effective Time shall be the bylaws of the Surviving Company until thereafter amended in accordance
with applicable law.

     1.9 Tax Consequences. It is intended that the Merger shall constitute a
“reorganization” within the meaning of Section 368(a) of the Code, and that this Agreement shall
constitute a “plan of reorganization” for purposes of Sections 354 and 361 of the Code.

     1.10 The Bank Merger. As soon as practicable after the execution of this Agreement,
CBI and FNB shall cause CBI Bank and First National Bank of Pennsylvania (“FNB Bank”) to enter into
a bank merger agreement, the form of which is attached to this Agreement as Exhibit A (the “Bank
Merger Agreement”), that provides for the merger of CBI Bank with and into FNB Bank (the “Bank
Merger”), in accordance with applicable laws and regulations and the terms of the Bank Merger
Agreement and as soon as practicable after consummation of the Merger. The Bank Merger Agreement
provides that the directors of FNB Bank upon consummation of the Bank Merger shall be the directors
of FNB Bank immediately prior to the Bank Merger.

ARTICLE 2

EXCHANGE OF SHARES

     2.1 FNB to Make Merger Consideration Available. Within four business days following
the Effective Time, FNB shall deposit, or shall cause to be deposited, with the Registrar and
Transfer Company, (the “Exchange Agent”), for the benefit of the former shareholders of CBI Common
Stock for exchange in accordance with this Article 2, (i) authority to issue book entries
representing the shares of FNB Common Stock sufficient to deliver the aggregate Stock Amount, (ii)
cash in an aggregate amount equal to the Cash Amount for all of the outstanding shares of CBI
Common Stock, (iii) immediately available funds equal to any dividends or distributions payable in
accordance with Section 2.2(b) and (iv) cash in lieu of any fractional shares (such cash and book
entries for shares of FNB Common Stock, collectively being referred to as the “Exchange Fund”), to
be issued pursuant to Section 1.4(a) and paid pursuant to Section 1.4(a) in exchange for
outstanding shares of CBI Common Stock.

     2.2 Exchange of Shares.

          (a) After the Effective Time of the Merger, each holder of a Certificate formerly representing
CBI Common Stock, other than Treasury Shares, who surrenders or has surrendered such Certificate or
customary affidavits and indemnification regarding the

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loss or destruction of such Certificate, together with duly executed transmittal materials to
the Exchange Agent, shall, upon acceptance thereof, be entitled to (i) a book entry representing
the FNB Common Stock and (ii) the cash into which the shares of CBI Common Stock shall have been
converted pursuant to Section 1.4, as well as cash in lieu of any fractional share of FNB Common
Stock to which such holder would otherwise be entitled, if applicable. The Exchange Agent shall
accept such Certificate upon compliance with such reasonable and customary terms and conditions as
the Exchange Agent may impose to effect an orderly exchange thereof in accordance with normal
practices. Until surrendered as contemplated by this Section 2.2, each Certificate representing
CBI Common Stock shall be deemed from and after the Effective Time of the Merger to evidence only
the right to receive the Merger Consideration to which it is entitled hereunder upon such
surrender. FNB shall not be obligated to deliver the Merger Consideration to which any former
holder of CBI Common Stock is entitled as a result of the Merger until such holder surrenders his
Certificate or Certificates for exchange as provided in this Section 2.2. If any certificate for
shares of FNB Common Stock, or any check representing cash and/or declared but unpaid dividends, is
to be issued in a name other than that in which a Certificate surrendered for exchange is issued,
the Certificate so surrendered shall be properly endorsed and otherwise in proper form for transfer
and the person requesting such exchange shall affix any requisite stock transfer tax stamp to the
Certificate surrendered or provide funds for their purchase or establish to the satisfaction of the
Exchange Agent that such taxes are not payable.

          (b) No dividends or other distributions declared or made after the Effective Time of the
Merger with respect to FNB Common Stock with a record date after the Effective Time of the Merger
shall be paid to the holder of any unsurrendered Certificate with respect to the shares of FNB
Common Stock represented thereby or issuable in respect thereof, and no cash payment in lieu of a
fractional share shall be paid to any such holder pursuant to Section 1.4, until the holder of
record of such Certificate shall surrender such Certificate. Subject to the effect of applicable
laws, following surrender of any such Certificate, FNB shall cause the book entries to be made for
the benefit of such record holder representing whole shares of FNB Common Stock issued in exchange
for such Certificate and FNB shall pay to such record holder, without interest, (i) at the time of
such surrender, the amount of any cash payable in lieu of a fractional share of FNB Common Stock to
which such holder is entitled pursuant to Section 1.4 and the amount of dividends or other
distributions with a record date on or after the Effective Time of the Merger theretofore paid with
respect to such whole shares of FNB Common Stock, and (ii) at the appropriate payment date, the
amount of dividends or other distributions with a record date after the Effective Time of the
Merger but prior to surrender and a payment date subsequent to surrender payable with respect to
such whole shares of FNB Common Stock.

          (c) All cash and shares of FNB Common Stock issued upon the surrender for exchange of shares
of CBI Common Stock or the provision of customary affidavits and indemnification for lost or
mutilated Certificates in accordance with the terms of this

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Agreement and the letter of transmittal, including any cash paid pursuant to Section 1.4,
shall be deemed to have been issued in full satisfaction of all rights pertaining to such shares of
CBI Common Stock, and there shall be no further registration of transfers on the stock transfer
books of FNB, after the Merger, of the shares of CBI Common Stock that were outstanding immediately
prior to the Effective Time of the Merger. If, after the Effective Time of the Merger,
Certificates are presented to FNB for any reason, they shall be canceled and exchanged as provided
in this Agreement.

          (d) Any portion of the Exchange Fund, including any interest thereon, that remains
undistributed to the shareholders of CBI following the passage of 12 months after the Effective
Time of the Merger shall be delivered to FNB, upon demand, and any shareholders of CBI who have not
theretofore complied with this Section 2.2 shall thereafter look only to FNB for payment of their
claim for cash and for FNB Common Stock, any cash in lieu of fractional shares of FNB Common Stock
and any dividends or distributions with respect to FNB Common Stock.

          (e) Neither CBI nor FNB shall be liable to any holder of shares of CBI Common Stock or FNB
Common Stock, as the case may be, for such shares, and cash or dividends or distributions with
respect thereto, or cash from the Exchange Fund delivered to a public official pursuant to any
applicable abandoned property, escheat or similar law.

          (f) The Exchange Agent shall not be entitled to vote or exercise any rights of ownership with
respect to the shares of FNB Common Stock and cash held by it from time to time hereunder, except
that it shall receive and hold all dividends or other distributions paid or distributed with
respect to such shares of FNB Common Stock for the account of the Persons entitled thereto.

     2.3 Adjustments for Dilution and Other Matters. If prior to the Effective Time of the
Merger:

          (a) FNB shall declare a stock dividend or distribution on FNB Common Stock with a record date
prior to the Effective Time of the Merger, or subdivide, split up, reclassify or combine FNB Common
Stock, or make a distribution other than a regular quarterly cash dividend not in excess of $.20
per share, on FNB Common Stock in any security convertible into FNB Common Stock, in each case with
a record date prior to the Effective Time of the Merger; or

          (b) the outstanding shares of FNB Common Stock shall have been increased, decreased, changed
into or exchanged for a different number or kind of shares or securities, in each case as a result
of a reorganization, recapitalization, reclassification, stock dividend, stock split, reverse stock
split or other similar change in FNB’s capitalization other than pursuant to a business combination
transaction with another bank holding company or financial services company, then a proportionate
adjustment or adjustments will be made to

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the Merger Consideration, which adjustment may include, as appropriate, the issuance of
securities, property or cash on the same basis as that on which any of the foregoing shall have
been issued or issuable to, distributed or distributable to or paid or payable to holders of FNB
Common Stock generally.

     2.4 Withholding Rights. The Exchange Agent or, subsequent to the first anniversary of
the Effective Time, FNB, shall be entitled to deduct and withhold from any cash portion of the
Merger Consideration, any cash in lieu of fractional shares of FNB Common Stock, cash dividends or
distributions payable pursuant to Section 2.2(b) and any other cash amounts otherwise payable
pursuant to this Agreement to any holder of CBI Common Stock such amounts as the Exchange Agent or
FNB, as the case may be, is required to deduct and withhold under the Code, or any provision of
state, local or foreign Tax law, with respect to the making of such payment. To the extent the
amounts are so withheld by the Exchange Agent or FNB, as the case may be, such withheld amounts
shall be treated for all purposes of this Agreement as having been paid to the holder of shares of
CBI Common Stock in respect of whom such deduction and withholding was made by the Exchange Agent
or FNB, as the case may be.

ARTICLE 3

REPRESENTATIONS AND WARRANTIES OF CBI

     Except as disclosed in the disclosure schedule delivered by CBI to FNB (the “CBI Disclosure
Schedule”), CBI hereby represents and warrants to FNB as follows:

     3.1 Corporate Organization.

          (a) CBI is a corporation duly organized, validly existing and in good standing under the laws
of the Commonwealth of Pennsylvania. CBI has the corporate power and authority and has all
licenses, permits and authorizations of applicable Governmental Entities required to own or lease
all of its properties and assets and to carry on its business as it is now being conducted, and is
duly licensed or qualified to do business in each jurisdiction in which the nature of the business
conducted by it or the character or location of the properties and assets owned or leased by it
makes such licensing or qualification necessary, except where such failure to be licensed or
qualified does not have a Material Adverse Effect upon CBI.

          (b) CBI is duly registered as a bank holding company under the Bank Holding Company Act of
1956, as amended (the “BHC Act”). True and complete copies of the Articles of Incorporation of CBI
(the “CBI Articles”) and the Bylaws of CBI (the “CBI Bylaws”), as in effect as of the date of this
Agreement, have previously been made available to FNB.

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          (c) Each of CBI’s Subsidiaries (i) is duly organized and validly existing under the laws of
its jurisdiction of organization, (ii) is duly qualified to do business and in good standing in all
jurisdictions, whether federal, state, local or foreign, where its ownership or leasing of property
or the conduct of its business requires it to be so qualified and (iii) has all requisite corporate
power and authority, and has all licenses, permits and authorizations of applicable Governmental
Entities required, to own or lease its properties and assets and to carry on its business as now
conducted, except in each of (i) — (iii) as would not be reasonably likely to have, either
individually or in the aggregate, a Material Adverse Effect on CBI. As used in this Agreement, (i)
the word “Subsidiary” when used with respect to either party, means any corporation, partnership,
joint venture, limited liability company or any other entity (A) of which such party or a
subsidiary of such party is a general partner or (B) at least a majority of the securities or other
interests of which having by their terms ordinary voting power to elect a majority of the board of
directors or persons performing similar functions with respect to such entity is directly or
indirectly owned by such party and/or one or more subsidiaries thereof, and the terms “CBI
Subsidiaries” and “FNB Subsidiaries” shall mean any direct or indirect Subsidiary of CBI or FNB,
respectively, and (ii) the term “Material Adverse Effect” means, with respect to FNB, CBI or the
Surviving Company, as the case may be, any event, circumstance, development, change or effect that
alone or in the aggregate with other events, circumstances, developments, changes or effects (A) is
materially adverse to the business, results of operations or financial condition of such party and
its Subsidiaries taken as a whole; provided, however, that, with respect to this clause (A),
Material Adverse Effect shall not be deemed to include effects to the extent resulting from (1)
changes, after the date of this Agreement, in U.S. generally accepted accounting principles
(“GAAP”) or regulatory accounting requirements applicable to banks or savings associations and
their holding companies generally, (2) changes, after the date of this Agreement, in laws, rules or
regulations of general applicability or interpretations thereof by courts or Governmental Entities,
as defined in Section 3.4, (3) actions or omissions of (a) FNB or (b) CBI, taken at the request of,
or with the prior written consent of the other or required hereunder, (4) changes, events or
developments, after the date of this Agreement, in the national or world economy or financial or
securities markets generally or changes, events or developments, after the date of this Agreement
in general economic conditions or other changes, events or developments, after the date of this
Agreement that affect banks or their holding companies generally except to the extent that such
changes have a materially disproportionate adverse effect on such party relative to other similarly
situated participants in the markets or industries in which they operate, (5) consummation or
public disclosure of the transactions this Agreement contemplates, including the resignation of
employment of employees or any impact on such party’s business, customer relations, condition or
results of operations, in each case as a result therefrom, (6) any outbreak or escalation of war or
hostilities, any occurrence or threats of terrorist acts or any armed hostilities associated
therewith and any national or international calamity, disaster or emergency or any escalation
thereof, (7) any changes in interest rates or foreign currency rates, (8) any claim, suit, action,
audit,
arbitration, investigation, inquiry or other proceeding or order which in any manner
challenges, seeks to prevent, enjoin, alter or

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delay, or seeks damages as a result of or in connection with, the transactions this Agreement
contemplates, (9) any failure by such party to meet any published, whether by such party or a third
party research analyst, or internally prepared estimates of revenues or earnings, (10) a decline in
the price, or a change in the trading volume of, such party’s common stock on The Financial
Industry Regulatory Authority, including any successor exchange (“FINRA”), or the New York Stock
Exchange, including any successor exchange (“NYSE”), as applicable, and (11) any matter to the
extent that (i) it is disclosed in reasonable detail in the party’s disclosure schedules delivered
to the other party pursuant to this Agreement or in such party’s SEC reports referenced in Section
4.12, as applicable, and (ii) such disclosed matter does not worsen in a materially adverse manner
or (B) materially delays or impairs the ability of such party to timely consummate the transactions
this Agreement contemplates.

     3.2 Capitalization.

          (a) The authorized capital stock of CBI consists of 12,000,000 shares of CBI Common Stock, of
which, as of June 30, 2010, 1,722,923 shares were issued and outstanding. As of June 30, 2010, no
shares of CBI Common Stock were reserved for issuance pursuant to stock options or any other rights
to purchase or otherwise acquire any capital stock of CBI. All of the issued and outstanding
shares of CBI Common Stock have been duly authorized and validly issued and are fully paid,
nonassessable and free of preemptive rights. Except pursuant to this Agreement and as set forth in
Section 3.2(a) of the CBI Disclosure Schedule, CBI 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 CBI Common Stock or any other equity
securities of CBI or any securities representing the right to purchase or otherwise receive any
shares of CBI Common Stock.

          (b) All of the issued and outstanding shares of capital stock or other equity ownership
interests of each Subsidiary of CBI are owned by CBI, directly or indirectly, free and clear of any
material liens, pledges, charges and security interests and similar encumbrances, other than liens
for property Taxes not yet due and payable (“Liens”), and all of such shares or equity ownership
interests are duly authorized and validly issued and are fully paid, nonassessable and free of
preemptive rights, except as provided in Section 1530 of the PBCL or similar laws in the case of
depository institutions. No such Subsidiary has or is bound by any outstanding subscriptions,
options, warrants, calls, commitments or agreements of any character calling for the purchase or
issuance of any shares of capital stock or any other equity security of such Subsidiary or any
securities representing the right to purchase or otherwise receive any shares of capital stock or
any other equity security of such Subsidiary.

     3.3 Authority; No Violation.

          (a) CBI has full corporate power and authority to execute and deliver this Agreement and to
consummate the transactions this Agreement contemplates, subject to the

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receipt of necessary CBI Shareholder and Regulatory Approvals. The execution and delivery of
this Agreement and the consummation of the transactions this Agreement contemplates have been duly
and validly approved by the Board of Directors of CBI. Except for the approval and adoption of
this Agreement and the transactions this Agreement contemplates by the affirmative vote of the
holders of 75% of the outstanding shares of CBI Common Stock at such meeting at which a quorum is
present, no other corporate approvals on the part of CBI are necessary to approve this Agreement.
This Agreement has been duly and validly executed and delivered by CBI and, assuming due
authorization, execution and delivery by FNB, constitutes the valid and binding obligation of CBI,
enforceable against CBI in accordance with its terms, except as may be limited by bankruptcy,
insolvency, moratorium, reorganization or similar laws affecting the rights of creditors generally
and the availability of equitable remedies.

          (b) Neither the execution and delivery of this Agreement by CBI nor the consummation by CBI of
the transactions this Agreement contemplates, nor compliance by CBI with any of the terms or
provisions of this Agreement, will (i) violate any provision of the CBI Articles or the CBI Bylaws
or (ii) assuming that the consents, approvals and filings referred to in Section 3.4 are duly
obtained and/or made and are in full force and effect, (A) violate any statute, code, ordinance,
rule, regulation, judgment, order, writ, decree or Injunction as defined in Section 7.1(e)
applicable to CBI, any of its Subsidiaries or any of their respective properties or assets or (B)
violate, conflict with, result in a breach of any provision of, constitute a default or an event
which, with notice or lapse of time, or both, would constitute a default under, result in the
termination of or a right of termination or cancellation under, accelerate the performance required
by, or result in the creation of any Lien upon any of the respective properties or assets of CBI or
any of its Subsidiaries under, any of the terms, conditions or provisions of any note, bond,
mortgage, indenture, deed of trust, license, lease, agreement or other instrument or obligation to
which CBI or any of its Subsidiaries is a party, or by which they or any of their respective
properties or assets may be bound or affected, except for such violations, conflicts, breaches or
defaults with respect to clause (ii) that are not reasonably likely to have, either individually or
in the aggregate, a Material Adverse Effect on CBI.

     3.4 Consents and Approvals. Except for (i) the filing by FNB of applications and
notices, as applicable, with the Board of Governors of the Federal Reserve System (the “Federal
Reserve Board”) under the BHC Act and the Federal Reserve Act, as amended, and approval of such
applications and notices, and, in connection with the merger of CBI Bank with and into FNB Bank,
the filing by FNB of applications and notices, as applicable, with the Federal Deposit Insurance
Corporation (the “FDIC”), the Office of the Comptroller of the Currency (the “OCC”) or the
Pennsylvania Department of Banking (the “PA DOB”) and the Federal Reserve Board, and approval of
such applications and notice, (ii) the filing by FNB of any required applications or notices with
any foreign or state banking, insurance or other regulatory or self-regulatory authorities and
approval of such applications and notices (the

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“Other Regulatory Approvals”), (iii) the filing by FNB with the Securities and Exchange
Commission (the “SEC”) of a proxy statement in definitive form relating to the meetings of CBI
shareholders to be held in connection with this Agreement (the “ Proxy Statement”) and the
transactions this Agreement contemplates and of a registration statement by FNB on Form S-4 that is
declared effective (the “Registration Statement”) in which the Proxy Statement will be included as
a prospectus, and declaration of effectiveness of the Registration Statement, (iv) the filing by
FNB of the Articles of Merger with and the acceptance for record by the Secretary of State of the
Commonwealth of Pennsylvania pursuant to the PBCL and the filing of the Articles of Merger with and
the acceptance for record by the Secretary of State of the State of Florida pursuant to the FBCA,
(v) any notices or filings by CBI and FNB required under the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the “HSR Act”), (vi) any consents, authorizations, approvals,
filings or exemptions by FNB in connection with compliance with the applicable provisions of
federal and state securities laws relating to the regulation of broker-dealers, investment advisers
or transfer agents and the rules and regulations thereunder and of any applicable industry
self-regulatory organization (“SRO”), and the rules of FINRA or the NYSE, or that are required
under consumer finance, insurance mortgage banking and other similar laws, (vii) approval of the
listing of such FNB Common Stock issuable in the Merger, (viii) the adoption of this Agreement by
the requisite vote of shareholders of CBI and (ix) filings, if any, required by FNB as a result of
the particular status of FNB, no consents or approvals of or filings or registrations by FNB with
any court, administrative agency or commission or other governmental authority or instrumentality
or SRO (each a “Governmental Entity”) are necessary in connection with (A) the execution and
delivery by CBI of this Agreement and (B) the consummation by CBI of the Merger and the other
transactions this Agreement contemplates. Nothing in this Section 3.4 is intended or shall be
construed as requiring CBI to take any of the actions described in this Agreement, or relieving FNB
of its obligations to make such filings or obtain approvals or consents necessary to the
consummation of this Agreement and the transactions contemplated in this Agreement.

     3.5 Reports. CBI and each of its Subsidiaries have in all material respects timely
filed all reports, registrations and statements, together with any amendments required to be made
with respect thereto, that they were required to file since January 1, 2008 with (i) the Federal
Reserve Board, (ii) the FDIC, (iii) any state regulatory authority, (iv) any foreign regulatory
authority and (v) any SRO (collectively, “Regulatory Agencies”) and with each other applicable
Governmental Entity, and all other reports and statements required to be filed by them since
January 1, 2008, including any report or statement required to be filed pursuant to the laws, rules
or regulations of the United States, any state, any foreign entity, or any Regulatory Agency, and
have paid all fees and assessments due and payable in connection therewith. Except for normal
examinations conducted by a Regulatory Agency in the ordinary course of the business of CBI and its
Subsidiaries, no Regulatory Agency has initiated or has pending any proceeding or, to the knowledge
of CBI, investigation into the business or operations of CBI or any of its Subsidiaries since
January 1, 2008. There (i) is no

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unresolved violation, criticism or exception by any Regulatory Agency with respect to any
report or statement relating to any examinations or inspections of CBI or any of its Subsidiaries
and (ii) has been no formal or informal inquiries by, or disagreements or disputes with, any
Regulatory Agency with respect to the business, operations, policies or procedures of CBI since
January 1, 2008, except as set forth in Section 3.5 of the CBI Disclosure Schedule.

     3.6 Financial Statements.

          (a) (i) CBI has previously made available to FNB copies of the consolidated balance sheets of
CBI and its Subsidiaries as of December 31, 2007, 2008 and 2009 (as restated), and the related
consolidated statements of income, shareholders’ equity and cash flows for the years then ended,
accompanied by the audit reports of their independent registered public accountants with respect
to CBI for the years ended December 31, 2007, 2008 and 2009. The December 31, 2009 consolidated
balance sheet of CBI, as restated, including the related notes, where applicable, fairly presents
in all material respects the consolidated financial position of CBI and its Subsidiaries as of the
date thereof, and the other financial statements referred to in this Section 3.6, including the
related notes, where applicable, fairly present in all material respects the results of the
consolidated operations, cash flows and changes in shareholders equity and consolidated financial
position of CBI and its Subsidiaries for the respective fiscal periods or as of the respective
dates set forth in this Agreement, subject to normal year-end audit adjustments in amounts
consistent with past experience in the case of unaudited statements, each of such statements,
including the related notes, where applicable, complies in all material respects with applicable
accounting requirements and with the published rules with respect thereto and each of such
statements, including the related notes, where applicable, has been prepared in all material
respects in accordance with GAAP consistently applied during the periods involved, except, in each
case, as indicated in such statements or in the notes thereto. The books and records of CBI and
its Subsidiaries have been, and are being, maintained in all material respects in accordance with
GAAP and any other applicable legal and accounting requirements and reflect only actual
transactions.

          (b) No agreement pursuant to which any loans or other assets have been or shall be sold by CBI
or its Subsidiaries entitled the buyer of such loans or other assets, unless there is material
breach of a representation or covenant by CBI or its Subsidiaries, to cause CBI or its Subsidiaries
to repurchase such loan or other asset or the buyer to pursue any other form of recourse against
CBI or its Subsidiaries. To the knowledge of CBI, there has been no material breach of a
representation or covenant by CBI or its Subsidiaries in any such agreement. Since March 1, 2010,
CBI has made no cash, stock or other dividend or any other distribution with respect to the capital
stock of CBI or any of its Subsidiaries has been declared, set aside or paid. Except as disclosed
in Section 3.6 of the CBI Disclosure Schedule, no shares of capital stock of CBI have been
purchased, redeemed or otherwise acquired,

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directly or indirectly, by CBI since January 1, 2008, and no agreements have been made to do
the foregoing.

     3.7 Broker’s Fees. Except as set forth in Section 3.7 of the CBI Disclosure Schedule,
neither CBI nor any CBI Subsidiary nor any of their respective officers or directors has employed
any broker or finder or incurred any liability for any broker’s fees, commissions or finder’s fees
in connection with the Merger or related transactions this Agreement contemplates.

     3.8 Absence of Certain Changes or Events. Since December 31, 2009, except as set
forth in Schedule 3.8 of the CBI Disclosure Schedule, (i) CBI and its Subsidiaries have, except in
connection with the negotiation and execution and delivery of this Agreement, carried on their
respective businesses in all material respects in the ordinary course consistent with past practice
and (ii) there has not been any Material Adverse Effect with respect to CBI.

     3.9 Material Adverse Effect. A Material Adverse Effect shall be deemed to have
occurred if CBI’s Delinquent Loans as of any month end prior to the Closing Date, excluding any
month end subsequent to June 30, 2011, equals or exceeds $65 million. “Delinquent Loans” shall
mean (i) all loans with principal and/or interest that are 30-89 days past due, (ii) all loans with
principal and/or interest that are at least 90 days past due and still accruing, (iii) all loans
with principal and/or interest that are nonaccruing, (iv) restructured and impaired loans, (v) OREO
and (vi) net charge-offs from June 30, 2010 through the Closing Date.

     3.10 Legal Proceedings.

          (a) There is no pending, or, to CBI’s knowledge, threatened, litigation, action, suit,
proceeding, investigation or arbitration by any individual, partnership, corporation, trust, joint
venture, organization or other entity (each, a “Person”) or Governmental Entity that has had, or is
reasonably likely to have a Material Adverse Effect on CBI and its Subsidiaries, taken as a whole,
in each case with respect to CBI or any of its Subsidiaries or any of their respective properties
or permits, licenses or authorizations.

          (b) There is no judgment, or regulatory restriction, other than those of general application
that apply to similarly situated financial or bank holding companies or their Subsidiaries, that
has been imposed upon CBI, any of its Subsidiaries or the assets of CBI or any of its Subsidiaries,
that has had, or is reasonably likely to have, a Material Adverse Effect on CBI and its
Subsidiaries, taken as a whole.

     3.11 Taxes and Tax Returns.

          (a) Each of CBI and its Subsidiaries has duly and timely filed, including all applicable
extensions, all Tax Returns as defined in subsection (c) below required to be filed by it on or
prior to the date of this Agreement, all such Tax Returns being accurate and

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complete in all material respects, has timely paid or withheld and timely remitted all Taxes
shown thereon as arising and has duly and timely paid or withheld and timely remitted all Taxes,
whether or not shown on any Tax Return, that are due and payable or claimed to be due from it by a
Governmental Entity other than Taxes that (i) are being contested in good faith, which have not
been finally determined, and (ii) have been adequately reserved against in accordance with GAAP on
CBI’s most recent consolidated financial statements. All required estimated Tax payments
sufficient to avoid any underpayment penalties or interest have been made by or on behalf of each
of CBI and its Subsidiaries. Neither CBI nor any of its Subsidiaries has granted any extension or
waiver of the limitation period for the assessment or collection of Tax that remains in effect.
Except as set forth in Section 3.10 of the CBI Disclosure Schedule, there are no disputes, audits,
examinations or proceedings in progress or pending, including any notice received of an intent to
conduct an audit or examination, or claims asserted, for Taxes upon CBI or any of its Subsidiaries.
No claim has been made by a Governmental Entity in a jurisdiction where CBI or any of its
Subsidiaries have not filed Tax Returns such that CBI or any of its Subsidiaries is or may be
subject to taxation by that jurisdiction. All deficiencies asserted or assessments made as a
result of any examinations by any Governmental Entity of the Tax Returns of, or including, CBI or
any of its Subsidiaries have been fully paid. No issue has been raised by a Governmental Entity in
any prior examination or audit of each of CBI and its Subsidiaries which, by application of the
same or similar principles, could reasonably be expected to result in a proposed deficiency in
respect of such Governmental Entity for any subsequent taxable period. There are no Liens for
Taxes, other than statutory liens for Taxes not yet due and payable, upon any of the assets of CBI
or any of its Subsidiaries. Neither CBI nor any of its Subsidiaries is a party to or is bound by
any Tax sharing, allocation or indemnification agreement or arrangement, other than such an
agreement or arrangement exclusively between or among CBI and its Subsidiaries. Neither CBI nor
any of its Subsidiaries (A) has been a member of an affiliated group filing a consolidated federal
income Tax Return, other than a group the common parent of which was CBI, or (B) has any liability
for the Taxes of any Person, other than CBI or any of its Subsidiaries, under Treas. Reg.
§1.1502-6, or any similar provision of state, local or foreign law, or as a transferee or
successor, by contract or otherwise. Neither CBI nor any of its Subsidiaries has been, within the
past two years or otherwise as part of a “plan” or series of related transactions, within the
meaning of Section 355(e) of the Code, of which the Merger is also a part, or a “distributing
corporation” or a “controlled corporation”, within the meaning of Section 355(a)(1)(A) of the Code,
in a distribution of stock intended to qualify for tax-free treatment under Section 355 of the
Code. Except as set forth in Section 3.2(a) of the CBI Disclosure Schedule, no share of CBI Common
Stock is owned by a Subsidiary of CBI. CBI is not and has not been a “United States real property
holding company” within the meaning of Section 897(c)(2) of the Code during the applicable period
specified in Section 897(c)(1)(A)(ii) of the Code. Neither CBI, its Subsidiaries nor any other
Person on their behalf has executed or entered into any written agreement with, or obtained or
applied for any written consents or written clearances or any other Tax rulings from, nor has there
been any written agreement executed or entered into on behalf of any of them with

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any Governmental Entity, relating to Taxes, including any private letter rulings of the U.S.
Internal Revenue Service (“IRS”) or comparable rulings of any Governmental Entity and closing
agreements pursuant to Section 7121 of the Code or any predecessor provision thereof or any similar
provision of any applicable law, which rulings or agreements would have a continuing effect after
the Effective Time. Neither CBI nor any of its Subsidiaries has engaged in a “reportable
transaction,” as set forth in Treas. Reg. § 1.6011-4(b), or any transaction that is the same as
or substantially similar to one of the types of transactions that the IRS has determined to be a
tax avoidance transaction and identified by notice, regulation or other form of published guidance
as a “listed transaction,” as set forth in Treas. Reg. § 1.6011-4(b)(2). FNB has received
complete copies of (i) all federal, state, local and foreign income or franchise Tax Returns of CBI
and its Subsidiaries relating to the taxable periods beginning January 1, 2009 or later and (ii)
any audit report issued within the last three years relating to any Taxes due from or with respect
to CBI or its Subsidiaries. Neither CBI, any of its Subsidiaries nor FNB, as a successor to CBI,
will be required to include any item of material income in, or exclude any material item of
deduction from, taxable income for any taxable period or portion thereof ending after the Closing
Date as a result of any (i) change in method of accounting for a taxable period ending on or prior
to the Closing Date, (ii) installment sale or open transaction disposition made on or prior to the
Effective Time, (iii) prepaid amount received on or prior to the Closing Date or (iv) deferred
intercompany gain or any excess loss account of CBI or any of its Subsidiaries for periods or
portions of periods described in Treasury Regulations under Section 1502 of the Code, or any
corresponding or similar provision of state, local or foreign law, for periods or portions thereof
ending on or before the Closing Date.

          (b) As used in this Agreement, the term “Tax” or “Taxes” means (i) all federal, state, local,
and foreign income, excise, gross receipts, gross income, ad valorem, profits, gains, property,
capital, sales, transfer, use, payroll, bank shares tax, employment, severance, withholding,
duties, intangibles, franchise, backup withholding, inventory, capital stock, license, employment,
social security, unemployment, excise, stamp, occupation, and estimated taxes, and other taxes,
charges, levies or like assessments, (ii) all interest, penalties, fines, additions to tax or
additional amounts imposed by any Governmental Entity in connection with any item described in
clause (i) and (iii) any transferee liability in respect of any items described in clauses (i) or
(ii) payable by reason of Contract, assumption, transferee liability, operation of Law, Treas. Reg
§1.1502-6(a) or any predecessor or successor thereof of any analogous or similar provision under
law or otherwise.

          (c) As used in this Agreement, the term “Tax Return” means any return, declaration, report,
claim for refund, or information return or statement relating to Taxes, including any schedule or
attachment thereto, and including any amendment thereof, supplied or required to be supplied to a
Governmental Entity and any amendment thereof including, where permitted or required, combined,
consolidated or unitary returns for any group of entities.

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     3.12 Employee Benefits. For purposes of this Agreement, the following terms shall
have the following meaning:

     “Controlled Group Liability” means any and all liabilities (i) under Title IV of ERISA, (ii)
under Section 302 of ERISA, (iii) under Sections 412 and 4971 of the Code and (iv) as a result of a
failure to comply with the continuation coverage requirements of Section 601 et seq. of ERISA and
Section 4980B of the Code other than such liabilities that arise solely out of, or relate solely
to, the CBI Benefit Plans.

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

     “ERISA Affiliate” means, with respect to any entity, trade or business, any other entity,
trade or business that is, or was at the relevant time, a member of a group described in Section
414(b), (c), (m) or (o) of the Code or Section 4001(b)(1) of ERISA that includes or included the
first entity, trade or business, or that is, or was at the relevant time, a member of the same
“controlled group” as the first entity, trade or business pursuant to Section 4001(a)(14) of ERISA.

     “Multiemployer Plan” means any “multiemployer plan” within the meaning of Section 4001(a)(3)
of ERISA.

     “CBI Benefit Plans” means any material employee benefit plan, program, policy, practice, or
other arrangement providing benefits to any current or former employee, officer or director of CBI
or any of its Subsidiaries or any beneficiary or dependent thereof that is sponsored or maintained
by CBI or any of its Subsidiaries or to which CBI or any of its Subsidiaries contributes or is
obligated to contribute, whether or not written, including without limitation any employee welfare
benefit plan within the meaning of Section 3(1) of ERISA, any employee pension benefit plan within
the meaning of Section 3(2) of ERISA, whether or not such plan is subject to ERISA, and any bonus,
incentive, deferred compensation, vacation, stock purchase, stock option, severance, employment,
change of control or fringe benefit plan, program or policy.

     “CBI Employment Agreements” means a written contract, offer letter or agreement of CBI or any
of its Subsidiaries with or addressed to any individual who is rendering or has rendered services
thereto as an employee pursuant to which CBI or any of its Subsidiaries has any actual or
contingent liability or obligation to provide compensation and/or benefits in consideration for
past, present or future services.

     “CBI Plan” means any CBI Benefit Plan other than a Multiemployer Plan.

     “Withdrawal Liability” means liability to a Multiemployer Plan as a result of a complete or
partial withdrawal from such Multiemployer Plan, as those terms are defined in Part I of Subtitle E
of Title IV of ERISA.

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          (a) Section 3.12(a) of the CBI Disclosure Schedule includes a complete list of all material
CBI Benefit Plans and all material CBI Employment Agreements.

          (b) With respect to each CBI Plan, CBI has delivered or made available to FNB a true, correct
and complete copy of: (i) each writing constituting a part of such CBI Plan, including without
limitation all plan documents, current employee communications, benefit schedules, trust
agreements, and insurance contracts and other funding vehicles, (ii) the most recent Annual Report
(Form 5500 Series) and accompanying schedule, if any, (iii) the current summary plan description
and any material modifications thereto, if any, in each case, whether or not required to be
furnished under ERISA, (iv) the most recent annual financial report, if any, (v) the most recent
actuarial report, if any and (vi) the most recent determination letter from the IRS, if any. CBI
has delivered or made available to FNB a true, correct and complete copy of each material CBI
Employment Agreement.

          (c) All material contributions required to be made to any CBI Plan by applicable law or
regulation or by any plan document or other contractual undertaking, and all material premiums due
or payable with respect to insurance policies funding any CBI Plan, for any period through the date
of this Agreement have been timely made or paid in full or, to the extent not required to be made
or paid on or before the date of this Agreement, have been fully reflected on the financial
statements to the extent required by GAAP. Each CBI Benefit Plan that is an employee welfare
benefit plan under Section 3(1) of ERISA either (i) is funded through an insurance company contract
and is not a “welfare benefit fund” within the meaning of Section 419 of the Code or (ii) is
unfunded.

          (d) With respect to each CBI Plan, CBI and its Subsidiaries have complied, and are now in
compliance, in all material respects, with all provisions of ERISA, the Code and all laws and
regulations applicable to such CBI Plans. Each CBI Plan has been administered in all material
respects in accordance with its terms. There is not now, nor do any circumstances exist that would
reasonably be expected to give rise to, any requirement for the posting of security with respect to
any CBI Plan or the imposition of any material lien on the assets of CBI or any of its Subsidiaries
under ERISA or the Code. Section 3.12(d) of the CBI Disclosure Schedule identifies each CBI Plan
that is intended to be a “qualified plan” within the meaning of Section 401(a) of the Code (the
“CBI Qualified Plans”). The IRS has issued a favorable determination letter with respect to each
CBI Qualified Plan and the related trust that has not been revoked or CBI is entitled to rely on a
favorable opinion issued by the IRS, and, to the knowledge of CBI, there are no existing
circumstances and no events have occurred that would reasonably be expected to adversely affect the
qualified status of any CBI Qualified Plan or the related trust. No trust funding any CBI Plan is
intended to meet the requirements of Code Section 501(c)(9). To the knowledge of CBI, none of CBI
and its Subsidiaries nor any other person, including any fiduciary, has engaged in any “prohibited
transaction”, as defined in Section 4975 of the Code or Section 406 of ERISA, which would
reasonably be expected to subject any of the CBI Plans or their related trusts,

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CBI, any of its Subsidiaries or any person that CBI or any of its Subsidiaries has an
obligation to indemnify, to any material Tax or penalty imposed under Section 4975 of the Code or
Section 502 of ERISA.

          (e) Except as set forth in Section 3.12(e) of the CBI Disclosure Schedule with respect to each
CBI Plan that is subject to Title IV or Section 302 of ERISA or Section 412 or 4971 of the Code,
(i) there does not exist any accumulated funding deficiency within the meaning of Section 412 of
the Code or Section 302 of ERISA, whether or not waived, and (ii) (A) the fair market value of the
assets of such CBI Plan equals or exceeds the actuarial present value of all accrued benefits under
such CBI Plan, whether or not vested, on a termination basis, (B) no reportable event within the
meaning of Section 4043(c) of ERISA for which the 30-day notice requirement has not been waived has
occurred, (C) all premiums, if any, to the Pension Benefit Guaranty Corporation (the “PBGC”) have
been timely paid in full, (D) no liability, other than for premiums to the PBGC, under Title IV of
ERISA has been or would reasonably be expected to be incurred by CBI or any of its Subsidiaries and
(E) the PBGC has not instituted proceedings to terminate any such CBI Plan and, to CBI’s knowledge,
no condition exists that makes it reasonably likely that such proceedings will be instituted or
which would reasonably be expected to constitute grounds under Section 4042 of ERISA for the
termination of, or the appointment of a trustee to administer, any such CBI Plan, except as would
not have a Material Adverse Effect, individually or in the aggregate, in the case of clauses (A),
(B), (C), (D) and (E).

          (f) (i) No CBI Benefit Plan is a Multiemployer Plan or a plan that has two or more
contributing sponsors at least two of whom are not under common control, within the meaning of
Section 4063 of ERISA (a “Multiple Employer Plan”), (ii) none of CBI and its Subsidiaries nor any
of their respective ERISA Affiliates has, at any time during the last six years, contributed to or
been obligated to contribute to any Multiemployer Plan or Multiple Employer Plan and (iii) none of
CBI and its Subsidiaries nor any of their respective ERISA Affiliates has incurred, during the last
six years, any Withdrawal Liability that has not been satisfied in full. There does not now exist,
nor do any circumstances exist that would reasonably be likely to result in, any Controlled Group
Liability that would be a liability of CBI or any of its Subsidiaries following the Effective Time,
other than such liabilities that arise solely out of, or relate solely to, the CBI Benefit Plans.
Without limiting the generality of the foregoing, neither CBI nor any of its Subsidiaries, nor, to
CBI’s knowledge, any of their respective ERISA Affiliates, has engaged in any transaction described
in Section 4069 or Section 4204 or 4212 of ERISA.

          (g) Except as set forth in Section 3.12(g) of the CBI Disclosure Schedule, CBI and its
Subsidiaries have no liability for life, health, medical or other welfare benefits to former
employees or beneficiaries or dependents thereof, except for health continuation coverage as
required by Section 4980B of the Code, Part 6 of Title I of ERISA or applicable law and at no
expense to CBI and its Subsidiaries.

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          (h) Except as set forth on Section 3.12(h) of the CBI Disclosure Schedule, neither the
execution nor the delivery of this Agreement nor the consummation of the transactions this
Agreement contemplates will, either alone or in conjunction with any other event, whether
contingent or otherwise, (i) result in any payment or benefit becoming due or payable, or required
to be provided, to any director, employee or independent contractor of CBI or any of its
Subsidiaries, (ii) increase the amount or value of any benefit or compensation otherwise payable or
required to be provided to any such director, employee or independent contractor, (iii) result in
the acceleration of the time of payment, vesting or funding of any such benefit or compensation or
(iv) result in any amount failing to be deductible by reason of Section 280G of the Code or would
be subject to an excise tax under Section 4999 of the Code or Section 409A of the Code.

          (i) No labor organization or group of employees of CBI or any of its Subsidiaries has made a
pending demand for recognition or certification, and there are no representation or certification
proceedings or petitions seeking a representation proceeding presently pending or, to CBI’s
knowledge, threatened to be brought or filed, with the National Labor Relations Board. Each of CBI
and its Subsidiaries is in material compliance with all applicable laws respecting employment and
employment practices, terms and conditions of employment, wages and hours and occupational safety
and health.

     3.13 Compliance with Applicable Law. CBI and each of its Subsidiaries are not in
default in any material respect under any, applicable law, statute, order, rule, regulation, policy
or guideline of any Governmental Entity applicable to CBI or any of its Subsidiaries, including the
Equal Credit Opportunity Act, the Fair Housing Act, the Community Reinvestment Act, the Home
Mortgage Disclosure Act, the Uniting and Strengthening America by Providing Appropriate Tools
Required to Intercept and Obstruct Terrorist (USA Patriot) Act of 2001, the Bank Secrecy Act, the
Dodd-Frank Wall Street Reform and Consumer Protection Act and applicable limits on loans to one
borrower, except where such noncompliance or default is not reasonably likely to have, either
individually or in the aggregate, a Material Adverse Effect on CBI and its Subsidiaries taken as a
whole.

     3.14 Contracts. Except for matters that have not had and would not reasonably be
likely to have, individually or in the aggregate, a Material Adverse Effect on CBI and its
Subsidiaries taken as a whole, (i) none of CBI nor any of its Subsidiaries is, with or without the
lapse of time or the giving of notice, or both, in breach or default in any material respect under
any material contract, lease, license or other agreement or instrument, (ii) to the knowledge of
CBI, none of the other parties to any such material contract, lease, license or other agreement or
instrument is, with or without the lapse of time or the giving of notice, or both, in breach or
default in any material respect thereunder and (iii) neither CBI nor any of its Subsidiaries has
received any written notice of the intention of any party to terminate or cancel any such material
contract, lease, license or other agreement or instrument whether as a termination or cancellation
for convenience or for default of CBI or any of its Subsidiaries.

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     3.15 Agreements with Regulatory Agencies. Except to the extent disclosure hereunder
is precluded by applicable law, neither CBI nor any of its Subsidiaries is subject to any
cease-and-desist or other order or enforcement action issued by, or is a party to any written
agreement, consent agreement or memorandum of understanding with, or is a party to any commitment
letter or similar undertaking to, or is subject to any order or directive by, or has been ordered
to pay any civil money penalty by, or has been since January 1, 2008, a recipient of any
supervisory letter from, or since January 1, 2008, has adopted any policies, procedures or board
resolutions at the request or suggestion of any Regulatory Agency or other Governmental Entity that
currently restricts in any material respect the conduct of its business or that in any material
manner relates to its capital adequacy, its ability to pay dividends, its credit or risk management
policies, its management or its business, other than those of general application that apply to
similarly situated financial holding companies or their Subsidiaries, each item in this sentence,
whether or not set forth in Section 3.11 of the CBI Disclosure Schedule (an “CBI Regulatory
Agreement”), nor has CBI or any of its Subsidiaries been advised since January 1, 2008 by any
Regulatory Agency or other Governmental Entity that it is considering issuing, initiating,
ordering, or requesting any such CBI Regulatory Agreement.

     3.16 Undisclosed Liabilities. Except for (i) those liabilities that are reflected or
reserved against on the consolidated balance sheet of CBI as of June 30, 2010, including any notes
thereto, (ii) liabilities incurred in connection with this Agreement and the transactions this
Agreement contemplates and (iii) liabilities incurred in the ordinary course of business consistent
with past practice since June 30, 2010, neither CBI nor any of its Subsidiaries has incurred any
liability of any nature whatsoever, whether absolute, accrued, contingent or otherwise and whether
due or to become due, that has had or is reasonably likely to have, either individually or in the
aggregate, a Material Adverse Effect on CBI.

     3.17 Environmental Liability.

          (a) To CBI’s Knowledge, (A) CBI and its Subsidiaries are in material compliance with
applicable Environmental Laws, (B) no Contamination exceeding applicable cleanup standards or
remediation thresholds exists at real property, including buildings or other structures, currently
or formerly owned or operated by CBI or any of its Subsidiaries, that reasonably could result in a
material Environmental Liability for CBI or its Subsidiaries, (C) no Contamination exists at any
real property currently owned by a third party that reasonably could result in a material
Environmental Liability for CBI or its Subsidiaries, (D) neither CBI nor any of its Subsidiaries
has received any written notice, demand letter, or claim alleging any material violation of, or
liability under, any Environmental Law, (E) neither CBI nor any of its Subsidiaries is subject to
any order, decree, injunction or other agreement with any Governmental Entity or any third party
under any Environmental Law that reasonably could result in a material Environmental Liability of
CBI or its Subsidiaries and (F) CBI has set forth in Section 3.17 of the CBI Disclosure Schedule
and made available to

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FNB copies of all environmental reports or studies, sampling data, correspondence and filings
in its possession relating to CBI, its Subsidiaries and any currently owned or operated real
property of CBI which were prepared in the last five years.

          (b) As used in this Agreement, (A) the term “Environmental Laws” means collectively, any and
all laws, ordinances, rules, regulations, directives, orders, authorizations, decrees, permits, or
other mandates, of a Governmental Entity relating to any Hazardous Substance, Contamination,
protection of the Environment or protection of human health and safety, including, without
limitation, those relating to emissions, discharges or releases or threatened emissions, discharges
or releases to, on, onto or into the environment of any Hazardous Substance, (B) the term
“Hazardous Substance” means any element, substance, compound or mixture whether solid, liquid or
gaseous that is subject to regulation by any Governmental Entity under any Environmental Law, or
the presence or existence of which gives rise to any Environmental Liability, (C) the term
“Contamination” means the emission, discharge or release of any Hazardous Substance to, on, onto or
into the environment and the effects of such emission, discharge or release, including the presence
or existence of any such Hazardous Substance and (D) the term “Environmental Liability” means
liabilities for response, remedial or investigation costs, and any other expenses, including
reasonable attorney an consultant fees, laboratory costs and litigation costs, required under, or
necessary to attain or maintain compliance with, applicable Environmental Laws or relating to or
arising from Contamination or Hazardous Substances.

     3.18 Real Property.

          (a) Each of CBI and its Subsidiaries has good title free and clear of all Liens to all real
property owned by such entities (the “Owned Properties”), except for Liens that do not materially
detract from the present use of such real property.

          (b) A true and complete copy of each agreement pursuant to which CBI or any of its
Subsidiaries leases any real property, such agreements, together with any amendments, modifications
and other supplements thereto (collectively, the “Leases”), has heretofore been made available to
FNB. Each Lease is valid, binding and enforceable against CBI or its applicable Subsidiary in
accordance with its terms and is in full force and effect, except as may be limited by bankruptcy,
insolvency, moratorium, reorganization or similar laws affecting the rights of creditors generally
and the availability of equitable remedies. There is not under any such Lease any material
existing default by CBI or any of its Subsidiaries or, to the knowledge of CBI, any other party
thereto, or any event which with notice or lapse of time or both would constitute such a default.
The consummation of the transactions this Agreement contemplates will not cause defaults under the
Leases, provided necessary consents disclosed in the CBI Disclosure Schedule have been obtained and
are in effect, except for any such default which would not, individually or in the aggregate, have
a Material Adverse Effect on CBI and its Subsidiaries taken as a whole.

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          (c) The Owned Properties and the properties leased pursuant to the Leases (the “Leased
Properties”) constitute all of the real estate on which CBI and its Subsidiaries maintain their
facilities or conduct their business as of the date of this Agreement, except for locations the
loss of which would not result in a Material Adverse Effect on CBI and its Subsidiaries taken as a
whole.

          (d) A true and complete copy of each agreement pursuant to which CBI or any of its
Subsidiaries leases real property to a third party (“Third Party”), such agreements, together with
any amendments, modifications and other supplements thereto (collectively, the “Third Party
Leases”), has heretofore been made available to FNB. Each Third Party Lease is valid, binding and
enforceable in accordance with its terms and is in full force and effect, except as may be limited
by bankruptcy, insolvency, moratorium, reorganization or similar laws affecting the rights of
creditors generally and the availability of equitable remedies. To the knowledge of CBI, there are
no existing defaults by the tenant under any Third Party Lease, or any event which with notice or
lapse of time or both which would constitute such a default and which individually or in the
aggregate would have a Material Adverse Effect on CBI and its Subsidiaries taken as a whole.

     3.19 State Takeover Laws. CBI has previously taken any and all action necessary to
render the provisions of the Pennsylvania anti-takeover statutes in Sections 2538 through 2588
inclusive of the PBCL that may be applicable to the Merger and the other transactions this
Agreement contemplates inapplicable to FNB and its respective affiliates, and to the Merger, this
Agreement and the transactions this Agreement contemplates. The Board of Directors of CBI has
approved this Agreement and the transactions this Agreement contemplates as required to render
inapplicable to such Agreement and the transactions this Agreement contemplates any restrictive
provisions in CBI’s Articles or CBI’s Bylaws.

     3.20 Reorganization. As of the date of this Agreement, CBI is not aware of any fact
or circumstance that could reasonably be expected to prevent the Merger from qualifying as a
“reorganization” within the meaning of Section 368(a) of the Code.

     3.21 Opinion. Prior to the execution of this Agreement, CBI has received an opinion
from Sandler O’Neill & Partners L.P. to the effect that as of the date thereof and based upon and
subject to the matters set forth in this Agreement, the Merger Consideration is fair to the
shareholders of CBI from a financial point of view. Such opinion has not been amended or rescinded
as of the date of this Agreement.

     3.22 Insurance. CBI and its Subsidiaries are insured with reputable insurers against
such risks and in such amounts as are set forth in Section 3.22 of the CBI Disclosure Schedule and
as its management reasonably has determined to be prudent in accordance with industry practices.

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     3.23 Investment Securities. Except where failure to be true would not reasonably be
expected to have a Material Adverse Effect on CBI, (a) each of CBI and its Subsidiaries has good
title to all securities owned by it, except those securities sold under repurchase agreements
securing deposits, borrowings of federal funds or borrowings from the Federal Reserve Banks or the
Federal Home Loan Banks or held in any fiduciary or agency capacity, free and clear of any Liens,
except to the extent such securities are pledged in the ordinary course of business to secure
obligations of CBI or its Subsidiaries, and such securities are valued on the books of CBI in
accordance with GAAP in all material respects.

     3.24 Intellectual Property. CBI and each of its Subsidiaries owns, or is licensed to
use, in each case, free and clear of any Liens, all Intellectual Property used in the conduct of
its business as currently conducted that is material to CBI and its Subsidiaries, taken as a whole.
Except as would not reasonably be likely to have a Material Adverse Effect on CBI, (i)
Intellectual Property used in the conduct of its business as currently conducted that is material
to CBI and its Subsidiaries does not, to the knowledge of CBI, infringe on or otherwise violate the
rights of any person and is in accordance with any applicable license pursuant to which CBI or any
Subsidiary acquired the right to use any Intellectual Property and (ii) neither CBI nor any of its
Subsidiaries has received any written notice of any pending claim with respect to any Intellectual
Property used by CBI and its Subsidiaries. For purposes of this Agreement, “Intellectual Property”
means registered trademarks, service marks, brand names, certification marks, trade dress and other
indications of origin, the goodwill associated with the foregoing and registrations in the United
States Patent and Trademark Office or in any similar office or agency of the United States or any
state thereof, all letters patent of the United States and all reissues and extensions thereof.

     3.25 Loans; Nonperforming and Classified Assets.

          (a) Except as set forth in Section 3.25 of the CBI Disclosure Schedule, each loan (“Loan”) on
the books and records of CBI and its Subsidiaries was made and has been serviced in all material
respects in accordance with their customary lending standards in the ordinary course of business,
is evidenced in all material respects by appropriate and sufficient documentation and, to the
knowledge of CBI, constitutes the legal, valid and binding obligation of the obligor named in this
Agreement, subject to bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and
similar laws of general applicability relating to or affecting creditor’s rights or by general
equity principles.

          (b) CBI has set forth in Section 3.25 of the CBI Disclosure Schedule as to CBI and each CBI
Subsidiary as of the latest practicable date prior to the date of this Agreement: (A) any written
or, to CBI’s knowledge, oral Loan under the terms of which the obligor is 90 or more days
delinquent in payment of principal or interest, or to CBI’s knowledge, in default of any other
material provision thereof, (B) each Loan that has been classified as “substandard,” “doubtful,”
“loss” or “special mention” or words of similar import by CBI, a CBI Subsidiary or an applicable
regulatory authority, (C) a listing of the Other Real Estate

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Owned (“OREO”) acquired by foreclosure or by deed-in-lieu thereof, including the book value
thereof and (D) each Loan with any director, executive officer or five percent or greater
shareholder of CBI or a CBI Subsidiary, or to the knowledge of CBI, any Person controlling,
controlled by or under common control with any of the foregoing.

          (c) Except as set forth in Section 3.25 of the CBI Disclosure Schedule, as of the date of this
Agreement, none of CBI nor any CBI Subsidiary is a party to any written or oral loan agreement,
note or borrowing arrangement, including, without limitation, leases, credit enhancements,
commitments, guarantees and interest-bearing assets, with any director, officer or 5% or greater
shareholder of CBI or any CBI Subsidiary or any Affiliate of any of the foregoing.

          (d) Except as set forth in Section 3.25(d) of the CBI Disclosure Schedule, all reserves or
other allowances for loan losses reflected in CBI’s financial statements referred to in Section
3.6(a) as of and for the year ended December 31, 2009 and the six months ended June 30, 2010,
complied with all Laws and are adequate under GAAP. Neither CBI nor FNB has been notified by any
state or federal bank regulatory agency that its reserves are inadequate or that the practices and
policies of CBI in establishing its reserves for the year ended December 31, 2009 and the six
months ended June 30, 2010, and in accounting for delinquent and classified assets generally fail
to comply with applicable accounting or regulatory requirements, or that the Bank Regulators or
CBI’s independent auditor believes such reserves to be inadequate or inconsistent with the
historical loss experience of CBI.

          (e) CBI has previously furnished FNB with a complete list of all extensions of credit and OREO
that have been classified by any federal or state bank regulatory agency as other loans specially
mentioned, special mention, substandard, doubtful, loss, classified or criticized, credit risk
assets, concerned loans or words of similar import. CBI agrees to update such list than monthly
after the date of this Agreement and until the earlier of the Closing Date or the date that this
Agreement is terminated in accordance with its terms.

          (f) All loans owned by CBI or any CBI Subsidiary, or in which CBI or any CBI Subsidiary has an
interest, comply in all material respects with all Laws, including, but not limited to, applicable
usury statutes, underwriting and recordkeeping requirements and the Truth in Lending Act, the Equal
Credit Opportunity Act, and the Real Estate Settlement Procedures Act.

          (g) Except as set forth in Section 3.25(d) of the CBI Disclosure Schedule, all loans owned by
CBI or any CBI Subsidiary are collectable, except to the extent reserves CBI had made against such
loans in CBI’s consolidated financial statements at June 30, 2010. Each of CBI and each CBI
Subsidiary holds mortgages contained in its loan portfolio for its own benefit to the extent of its
interest shown therein; such mortgages evidence liens having the priority indicated by the terms of
such mortgages, including the associated loan documents, subject, as of the date of recordation or
filing of applicable security instruments, only to such

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exceptions as are discussed in attorneys’ opinions regarding title or in title insurance
policies in the mortgage files relating to the loans secured by real property or are not material
as to the collectability of such loans and all loans owned by CBI and each CBI Subsidiary are with
full recourse to the borrowers, except as set forth at Section 3.25(d) of the CBI Disclosure
Schedule, and each of CBI and any CBI Subsidiary has taken no action which would result in a waiver
or negation of any rights or remedies available against the borrower or guarantor, if any, on any
loan. All applicable remedies against all borrowers and guarantors are enforceable except as may
be limited by bankruptcy, insolvency, moratorium or other similar laws affecting creditors’ rights
and except as may be limited by the exercise of judicial discretion in applying principles of
equity.

          (h) Except as set forth at Section 3.25(c) of the CBI Disclosure Schedule, each outstanding
loan participation sold by CBI or any CBI Subsidiary was sold with the risk of non-payment of all
or any portion of that underlying loan to be shared by each participant proportionately to the
share of such loan represented by such participation without any recourse of such other lender or
participant to CBI or any CBI Subsidiary for payment or repurchase of the amount of such loan
represented by the participation or liability under any yield maintenance or similar obligation.

          (i) CBI and each CBI Subsidiary have properly perfected or caused to be properly perfected all
security interests, liens, or other interests in any collateral securing any loans made by it.

          (j) The CBI Disclosure Schedule sets forth a list of all loans or other extensions of credit
to all directors, officers and employees, or any other Person covered by Regulation O of the Board
of Governors of the Federal Reserve System.

          (k) The CBI Disclosure Schedule sets forth a listing, as of June 30, 2010, by account, of:
(i) all loans, including loan participations, of CBI or any other CBI Subsidiary that have had
their respective terms to maturity accelerated during the past twelve months, (ii) all loan
commitments or lines of credit of CBI that have been terminated CBI during the past 12 months by
reason of a default or adverse developments in the condition of the borrower or other events or
circumstances affecting the credit of the borrower, (iii) each borrower, customer or other party
which has notified CBI during the past 12 months of, or has asserted against CBI, in each case in
writing, any “lender liability” or similar claim, and each borrower, customer or other party which
has given CBI any oral notification of, or orally asserted to or against CBI, any such claim, (iv)
all loans, (A) that are contractually past due 90 days or more in the payment of principal and/or
interest, (B) that are on non-accrual status, (C) that as of the date of this Agreement are
classified as “Other Loans Specially Mentioned”, “Special Mention”, “Substandard”, “Doubtful”,
“Loss”, “Classified”, “Criticized”, “Watch List” or words of similar import, together with the
principal amount of and accrued and unpaid interest on each such loan and the identity of the
obligor thereunder, (D) where, during the past three years, the interest rate terms have been
reduced and/or the maturity dates have

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been extended subsequent to the agreement under which the loan was originally created due to
concerns regarding the borrower’s ability to pay in accordance with such initial terms, or (E)
where a specific reserve allocation exists in connection therewith and (iv) all assets classified
by CBI as OREO and all other assets currently held that were acquired through foreclosure or in
lieu of foreclosure.

     3.26 Fiduciary Accounts. CBI and each of its Subsidiaries has properly administered
all accounts for which it acts as a fiduciary, including but not limited to accounts for which it
serves as a trustee, agent, custodian, personal representative, guardian, conservator or investment
advisor, in accordance with the terms of the governing documents and applicable laws and
regulations. Neither CBI nor any of its Subsidiaries, nor any of their respective directors,
officers or employees, has committed any breach of trust to CBI’s knowledge with respect to any
fiduciary account and the records for each such fiduciary account are true and correct and
accurately reflect the assets of such fiduciary account.

     3.27 Allowance For Loan Losses. CBI Bank’s allowance for loan losses is sufficient at
the date of this Agreement for its reasonably anticipated loan losses, is in compliance with the
standards established by applicable Governmental Entities and GAAP and, to the knowledge of CBI, is
adequate.

     3.28 Subordinated Debt. CBI’s outstanding subordinated debt qualifies as Tier 2
capital under the applicable regulations of the federal bank regulatory agencies with jurisdiction
over CBI and its Subsidiaries.

ARTICLE 4

REPRESENTATIONS AND WARRANTIES OF FNB

     Except as disclosed in the disclosure schedule delivered by FNB to CBI (the “FNB Disclosure
Schedule”), FNB hereby represents and warrants to CBI as follows:

     4.1 Corporate Organization.

          (a) FNB is a corporation duly organized, validly existing and in good standing under the laws
of the State of Florida. FNB has the corporate power and authority and has all licenses, permits
and authorizations of applicable Governmental Entities required to own or lease all of its
properties and assets and to carry on its business as it is now being conducted, and is duly
licensed or qualified to do business in each jurisdiction in which the nature of the business
conducted by it or the character or location of the properties and assets owned or leased by it
makes such licensing or qualification necessary, except where such failure to be licensed or
qualified does not have a Material Adverse Effect upon FNB.

          (b) FNB is duly registered as a bank holding company and is a financial holding company under
the BHC Act. True and complete copies of the Articles of

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Incorporation (the “FNB Charter”) and Bylaws of FNB (the “FNB Bylaws”), as in effect as of the
date of this Agreement, have previously been made available to CBI.

          (c) Each FNB Subsidiary (i) is duly organized and validly existing under the laws of its
jurisdiction of organization, (ii) is duly qualified to do business and in good standing in all
jurisdictions, whether federal, state, local or foreign, where its ownership or leasing of property
or the conduct of its business requires it to be so qualified and (iii) has all requisite corporate
power and authority, and has all licenses, permits and authorizations of applicable Governmental
Entities required, to own or lease its properties and assets and to carry on its business as now
conducted, except in each of (i) – (iii) as would not be reasonably likely to have, either
individually or in the aggregate, a Material Adverse Effect on FNB.

     4.2 Capitalization.

          (a) The authorized capital stock of FNB consists of 500,000,000 shares of FNB Common Stock, of
which, as of June 30, 2010, 114,684,308 shares were issued and outstanding, and 20,000,000 shares
of preferred stock, $.01 par value (the “FNB Preferred Stock”), of which, as of the date of this
Agreement, no shares were issued and outstanding. As of June 30, 2010, 151,418 shares of FNB
Common Stock were held in FNB’s treasury. As of the date hereof, no shares of FNB Common Stock or
FNB Preferred Stock were reserved for issuance, except for 10,313,803 shares of FNB Common Stock
reserved for issuance upon exercise of options issued or available for issuance pursuant to
employee and director stock plans of FNB in effect as of the date of this Agreement (the “FNB Stock
Plans”) and warrants issued to the United States Treasury Department. All of the issued and
outstanding shares of FNB Common Stock have been, and all shares of FNB Common Stock that may be
issued pursuant to the FNB Stock Plans will be, when issued in accordance with the terms thereof,
duly authorized and validly issued and are fully paid, nonassessable and free of preemptive rights,
with no personal liability attaching to the ownership thereof. Except pursuant to this Agreement,
the FNB Stock Plans and warrants FNB issued to the United States Treasury Department, FNB 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 FNB Common Stock or any other
equity securities of FNB or any securities representing the right to purchase or otherwise receive
any shares of FNB Common Stock. The shares of FNB Common Stock to be issued pursuant to the Merger
have been duly authorized and, when issued and delivered in accordance with the terms of this
Agreement, will have been validly issued, fully paid, nonassessable and free of preemptive rights.

          (b) All of the issued and outstanding shares of capital stock or other equity ownership
interests of each Subsidiary of FNB are owned by FNB, directly or indirectly, free and clear of any
Liens, and all of such shares or equity ownership interests are duly authorized and validly issued
and are fully paid, nonassessable and free of preemptive rights. No such Subsidiary has or is
bound by any outstanding subscriptions, options, warrants, calls, commitments or agreements of any
character calling for the purchase or

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issuance of any shares of capital stock or any other equity security of such Subsidiary or any
securities representing the right to purchase or otherwise receive any shares of capital stock or
any other equity security of such Subsidiary.

     4.3 Authority; No Violation.

          (a) FNB has full corporate power and authority to execute and deliver this Agreement and to
consummate the transactions this Agreement contemplates. The execution and delivery of this
Agreement and the consummation of the transactions this Agreement contemplates have been duly and
validly approved by the Board of Directors of FNB and no other corporate approvals on the part of
FNB are necessary to approve this Agreement. This Agreement has been duly and validly executed and
delivered by FNB and, assuming due authorization, execution and delivery by CBI, constitutes the
valid and binding obligation of FNB, enforceable against FNB in accordance with its terms, except
as may be limited by bankruptcy, insolvency, moratorium, reorganization or similar laws affecting
the rights of creditors generally and the availability of equitable remedies.

          (b) Neither the execution and delivery of this Agreement by FNB, nor the consummation by FNB
of the transactions this Agreement contemplates, nor compliance by FNB with any of the terms or
provisions of this Agreement, will (i) violate any provision of the FNB Charter or the FNB Bylaws
or (ii) assuming that the consents, approvals and filings referred to in Section 4.4 are duly
obtained and/or made and are in full force and effect, (A) violate any statute, code, ordinance,
rule, regulation, judgment, order, writ, decree or Injunction applicable to FNB, any of its
Subsidiaries or any of their respective properties or assets or (B) violate, conflict with, result
in a breach of any provision of, constitute a default, or an event which, with notice or lapse of
time, or both, would constitute a default, under, result in the termination of or a right of
termination or cancellation under, accelerate the performance required by, or result in the
creation of any Lien upon any of the respective properties or assets of FNB or any of its
Subsidiaries under, any of the terms, conditions or provisions of any note, bond, mortgage,
indenture, deed of trust, license, lease, agreement or other instrument or obligation to which FNB
or any of its Subsidiaries is a party, or by which they or any of their respective properties or
assets may be bound or affected, except for such violations, conflicts, breaches or defaults with
respect to clause (iii) that are not reasonably likely to have, either individually or in the
aggregate, a Material Adverse Effect on FNB.

     4.4 Consents and Approvals. Except for (i) the filing of applications and notices, as
applicable, with the Federal Reserve Board under the BHC Act and the Federal Reserve Act, as
amended, and approval of such applications and notices, and, in connection with the acquisition of
the Bank by FNB, the filing of applications and notices, as applicable, with the FDIC, the OCC or
the PA DOB and the Federal Reserve Board and approval of such applications and notice, (ii) the
Other Regulatory Approvals, (iii) the filing with the SEC of the Proxy Statement and the filing and
declaration of effectiveness of the Registration Statement, (iv) the filing of the Articles of
Merger with and the acceptance for record by the

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Secretary of State of the Commonwealth of Pennsylvania pursuant to the PBCL and the filing of
the Articles of Merger with and the acceptance for record by the Secretary of State of the State of
Florida pursuant to the FBCA, (v) any notices or filings under the HSR Act, (vi) any consents,
authorizations, approvals, filings or exemptions in connection with compliance with the applicable
provisions of federal and state securities laws relating to the regulation of broker-dealers,
investment advisers or transfer agents and the rules and regulations thereunder and of any
applicable industry SRO, and the rules of FINRA or the NYSE, or that are required under consumer
finance, mortgage banking and other similar laws, (vii) such filings and approvals as are required
to be made or obtained under the securities or “Blue Sky” laws of various states in connection with
the issuance of the shares of FNB Common Stock pursuant to this Agreement and approval of listing
such FNB Common Stock on the NYSE and (viii) filings, if any, required as a result of the
particular status of CBI, no consents or approvals of or filings or registrations with any
Governmental Entity are necessary in connection with (A) the execution and delivery by FNB of this
Agreement and (B) the consummation by FNB of the Merger and the other transactions this Agreement
contemplates.

     4.5 Reports. FNB and each of its Subsidiaries have in all material respects timely
filed all reports, registrations and statements, together with any amendments required to be made
with respect thereto, that they were required to file since January 1, 2008 with the Regulatory
Agencies and with each other applicable Governmental Entity, including the SEC, and all other
reports and statements required to be filed by them since January 1, 2008, including any report or
statement required to be filed pursuant to the laws, rules or regulations of the United States, any
state, any foreign entity, or any Regulatory Agency, and have paid all fees and assessments due and
payable in connection therewith. Except for normal examinations conducted by a Regulatory Agency
in the ordinary course of the business of FNB and its Subsidiaries, no Regulatory Agency has
initiated or has pending any proceeding or, to the knowledge of FNB, investigation into the
business or operations of FNB or any of its Subsidiaries since January 1, 2008. There is no
unresolved violation, criticism or exception by any Regulatory Agency with respect to any report or
statement relating to any examinations or inspections of FNB or any of its Subsidiaries.

     4.6 Financial Statements. FNB has previously made available to CBI copies of the
consolidated balance sheet of FNB and its Subsidiaries as of December 31, 2007, 2008 and 2009, and
the related consolidated statements of income, changes in shareholders’ equity and cash flows for
the years then ended as reported in FNB’s Annual Report on Form 10-K for the fiscal year ended
December 31, 2009 (the “FNB 2009 10-K”), filed with the SEC under the Securities and Exchange Act
of 1934, as amended (the “Exchange Act”), accompanied by the audit report of Ernst & Young LLP,
independent registered public accountants with respect to FNB for the years ended December 31,
2007, 2008 and 2009. The December 31, 2009 consolidated balance sheet of FNB, including the
related notes, where applicable, fairly presents in all material respects the consolidated
financial position of FNB and its

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Subsidiaries as of the date thereof, and the other financial statements referred to in this
Section 4.6, including the related notes, where applicable, fairly present in all material respects
the results of the consolidated operations, cash flows and changes in shareholders’ equity and
consolidated financial position of FNB and its Subsidiaries for the respective fiscal periods or as
of the respective dates in this Agreement set forth, subject to normal year-end audit adjustments
in amounts consistent with past experience in the case of unaudited statements, each of such
statements, including the related notes, where applicable, complies in all material respects with
applicable accounting requirements and with the published rules and regulations of the SEC with
respect thereto, and each of such statements, including the related notes, where applicable, has
been prepared in all material respects in accordance with GAAP consistently applied during the
periods involved, except, in each case, as indicated in such statements or in the notes thereto.
The books and records of FNB and its Subsidiaries have been, and are being, maintained in all
material respects in accordance with GAAP and any other applicable legal and accounting
requirements and reflect only actual transactions.

     4.7 Broker’s Fees. Neither FNB nor any FNB Subsidiary nor any of their respective
officers or directors has employed any broker or finder or incurred any liability for any brokers
fees, commissions or finder’s fees in connection with the Merger or related transactions this
Agreement contemplates.

     4.8 Absence of Certain Changes or Events. Since December 31, 2009, except as publicly
disclosed in the Forms 10-K, 10-Q and 8-K comprising the FNB Reports, as defined in Section 4.12,
filed prior to the date of this Agreement (i) FNB and the FNB Subsidiaries have, except in
connection with the negotiation and execution and delivery of this Agreement, carried on their
respective businesses in all material respects in the ordinary course consistent with past practice
and (ii) there has not been any Material Adverse Effect with respect to FNB.

     4.9 Legal Proceedings.

          (a) There is no pending, or, to FNB’s knowledge, threatened, litigation, action, suit,
proceeding, investigation or arbitration by any Person or Governmental Entity that has had, or is
reasonably likely to have, a Material Adverse Effect on FNB and its Subsidiaries, taken as a whole,
in each case with respect to FNB or any of its Subsidiaries or any of their respective properties
or permits, licenses or authorizations.

          (b) There is no judgment, or regulatory restriction, other than those of general application
that apply to similarly situated financial or bank holding companies or their Subsidiaries, that
has been imposed upon FNB, any of its Subsidiaries or the assets of FNB or any of its Subsidiaries
that has had or is reasonably likely to have, a Material Adverse Effect on FNB or its Subsidiaries,
taken as a whole.

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     4.10 Taxes and Tax Returns. Each of FNB and its Subsidiaries has duly and timely
filed, including all applicable extensions, all Tax Returns required to be filed by it on or prior
to the date of this Agreement, all such Tax Returns being accurate and complete in all material
respects, has timely paid or withheld and timely remitted all Taxes shown thereon as arising and
has duly and timely paid or withheld and timely remitted all Taxes, whether or not shown on any Tax
Return, that are due and payable or claimed to be due from it by a Governmental Entity other than
Taxes that (i) are being contested in good faith, which have not been finally determined, and (ii)
have been adequately reserved against in accordance with GAAP on FNB’s most recent consolidated
financial statements. All required estimated Tax payments sufficient to avoid any underpayment
penalties or interest have been made by or on behalf of each of FNB and its Subsidiaries. Neither
FNB nor any of its Subsidiaries has granted any extension or waiver of the limitation period for
the assessment or collection of Tax that remains in effect. There are no disputes, audits,
examinations or proceedings in progress or pending, including any notice received of an intent to
conduct an audit or examination, or claims asserted, for Taxes upon FNB or any of its Subsidiaries.
No claim has been made by a Governmental Entity in a jurisdiction where the FNB or any of its
Subsidiaries has not filed Tax Returns such that FNB or any of its Subsidiaries is or may be
subject to taxation by that jurisdiction. All deficiencies asserted or assessments made as a
result of any examinations by any Governmental Entity of the Tax Returns of, or including, FNB or
any of its Subsidiaries have been fully paid. No issue has been raised by a Governmental Entity in
any prior examination or audit of each of FNB and its Subsidiaries which, by application of the
same or similar principles, could reasonably be expected to result in a proposed deficiency in
respect of such Governmental Entity for any subsequent taxable period. There are no Liens for
Taxes, other than statutory liens for Taxes not yet due and payable, upon any of the assets of FNB
or any of its Subsidiaries. Neither FNB nor any of its Subsidiaries is a party to or is bound by
any Tax sharing, allocation or indemnification agreement or arrangement, other than such an
agreement or arrangement exclusively between or among FNB and its Subsidiaries. Neither FNB nor
any of its Subsidiaries (A) has been a member of an affiliated group filing a consolidated federal
income Tax Return, other than a group the common parent of which was FNB, or (B) has any liability
for the Taxes of any Person, other than FNB or any of its Subsidiaries, under Treas. Reg.
§1.1502-6, or any similar provision of state, local or foreign law, or as a transferee or
successor, by contract or otherwise. Neither FNB nor any of its Subsidiaries has been, within the
past two years or otherwise as part of a “plan, or series of related transactions”, within the
meaning of Section 355(e) of the Code, of which the Merger is also a part, or a “distributing
corporation” or a “controlled corporation”, within the meaning of Section 355(a)(1)(A) of the Code)
in a distribution of stock intended to qualify for tax-free treatment under Section 355 of the
Code. No share of FNB Common Stock is owned by a Subsidiary of FNB. FNB is not and has not been a
“United States real property holding company” within the meaning of Section 897(c)(2) of the Code
during the applicable period specified in Section 897(c)(1)(A)(ii) of the Code. Neither FNB, its
Subsidiaries nor any other Person on their behalf has executed or entered into any written
agreement with, or obtained or applied for any written consents or written

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clearances or any other Tax rulings from, nor has there been any written agreement executed or
entered into on behalf of any of them with any Taxing Authority, relating to Taxes, including any
IRS private letter rulings or comparable rulings of any Taxing Authority and closing agreements
pursuant to Section 7121 of the Code or any predecessor provision thereof or any similar provision
of any applicable law, which rulings or agreements would have a continuing effect after the
Effective Time. Neither FNB nor any of its Subsidiaries has engaged in a “reportable transaction,”
as set forth in Treas. Reg. §1.6011-4(b), or any transaction that is the same as or substantially
similar to one of the types of transactions that the IRS has determined to be a tax avoidance
transaction and identified by notice, regulation or other form of published guidance as a “listed
transaction,” as set forth in Treas. Reg. §1.6011-4(b)(2). CBI has received complete copies of (i)
all federal, state, local and foreign income or franchise Tax Returns of FNB and its Subsidiaries
relating to the taxable periods beginning January 1, 2008 or later and (ii) any audit report issued
within the last three years relating to any Taxes due from or with respect to FNB or its
Subsidiaries. Neither FNB, nor any of its Subsidiaries will be required to include any item of
material income in, or exclude any material item of deduction from, taxable income for any taxable
period, or portion thereof, ending after the Closing Date as a result of any (i) change in method
of accounting for a taxable period ending on or prior to the Closing Date, (ii) installment sale or
open transaction disposition made on or prior to the Effective Time, (iii) prepaid amount received
on or prior to the Closing Date or (iv) deferred intercompany gain or any excess loss account of
FNB or any of its Subsidiaries for periods or portions of periods described in Treasury Regulations
under Section 1502 of the Code, or any corresponding or similar provision of state, local or
foreign law, for periods, or portions thereof, ending on or before the Closing Date.

     4.11 Employee Benefits. For purposes of this Agreement, the following terms shall
have the following meaning:

     “FNB Benefit Plans” means any material employee benefit plan, program, policy, practice, or
other arrangement providing benefits to any current or former employee, officer or director of FNB
or any of its Subsidiaries or any beneficiary or dependent thereof that is sponsored or maintained
by FNB or any of its Subsidiaries or to which FNB or any of its Subsidiaries contributes or is
obligated to contribute, whether or not written, including without limitation any employee welfare
benefit plan within the meaning of Section 3(1) of ERISA, any employee pension benefit plan within
the meaning of Section 3(2) of ERISA, whether or not such plan is subject to ERISA, and any bonus,
incentive, deferred compensation, vacation, stock purchase, stock option, severance, employment,
change of control or fringe benefit plan, program or policy.

     “FNB Employment Agreements” means a written contract, offer letter or agreement of FNB or any
of its Subsidiaries with or addressed to any individual who is rendering or has rendered services
thereto as an employee pursuant to which FNB or any of its Subsidiaries

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has any actual or contingent liability or obligation to provide compensation and/or benefits
in consideration for past, present or future services.

     “FNB Plan” means any FNB Benefit Plan other than a Multiemployer Plan.

          (a) Section 4.11(a) of the FNB Disclosure Schedule includes a complete list of all material
FNB Benefit Plans and all material FNB Employment Agreements.

          (b) With respect to each FNB Plan, FNB has delivered or made available to CBI a true, correct
and complete copy of: (i) each writing constituting a part of such FNB Plan, including without
limitation all plan documents, employee communications, benefit schedules, trust agreements, and
insurance contracts and other funding vehicles, (ii) the most recent Annual Report (Form 5500
Series) and accompanying schedule, if any, (iii) the current summary plan description and any
material modifications thereto, if any (in each case, whether or not required to be furnished under
ERISA), (iv) the most recent annual financial report, if any, (v) the most recent actuarial report,
if any, and (vi) the most recent determination letter from the IRS, if any. FNB has delivered or
made available to CBI a true, correct and complete copy of each material FNB Employment Agreement.

          (c) All material contributions required to be made to any FNB Plan by applicable law or
regulation or by any plan document or other contractual undertaking, and all material premiums due
or payable with respect to insurance policies funding any FNB Plan, for any period through the date
of this Agreement have been timely made or paid in full or, to the extent not required to be made
or paid on or before the date of this Agreement, have been fully reflected on the financial
statements to the extent required by GAAP. Each FNB Benefit Plan that is an employee welfare
benefit plan under Section 3(1) of ERISA either (i) is funded through an insurance company contract
and is not a “welfare benefit fund” within the meaning of Section 419 of the Code or (ii) is
unfunded.

          (d) With respect to each FNB Plan, FNB and its Subsidiaries have complied, and are now in
compliance, in all material respects, with all provisions of ERISA, the Code and all laws and
regulations applicable to such FNB Plans. Each FNB Plan has been administered in all material
respects in accordance with its terms. There is not now, nor do any circumstances exist that would
reasonably be expected to give rise to, any requirement for the posting of security with respect to
a FNB Plan or the imposition of any material lien on the assets of FNB or any of its Subsidiaries
under ERISA or the Code. Section 4.11(d) of the FNB Disclosure Schedule identifies each FNB Plan
that is intended to be a “qualified plan” within the meaning of Section 401(a) of the Code (“FNB
Qualified Plans”). The IRS has issued a favorable determination letter with respect to each
Qualified Plan and the related trust that has not been revoked or FNB is entitled to rely on a
favorable opinion issued by the IRS, and, to the knowledge of FNB, there are no existing
circumstances and no events have occurred that would reasonably be expected to adversely affect the
qualified status of any FNB Qualified Plan or the related trust. No trust funding any FNB Plan is
intended to meet the

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requirements of Code Section 501(c)(9). To the knowledge of FNB, none of FNB and its
Subsidiaries nor any other person, including any fiduciary, has engaged in any “prohibited
transaction”, as defined in Section 4975 of the Code or Section 406 of ERISA, which would
reasonably be expected to subject any of the FNB Plans or their related trusts, FNB, any of its
Subsidiaries or any person that FNB or any of its Subsidiaries has an obligation to indemnify, to
any material Tax or penalty imposed under Section 4975 of the Code or Section 502 of ERISA.

          (e) With respect to each FNB Plan that is subject to Title IV or Section 302 of ERISA or
Section 412 or 4971 of the Code, (i) there does not exist any accumulated funding deficiency within
the meaning of Section 412 of the Code or Section 302 of ERISA, whether or not waived, and, (ii)
except as would not have, individually or in the aggregate, a Material Adverse Effect: (A) the
fair market value of the assets of such FNB Plan equals or exceeds the actuarial present value of
all accrued benefits under such FNB Plan, whether or not vested, on a termination basis, (B) no
reportable event within the meaning of Section 4043(c) of ERISA for which the 30-day notice
requirement has not been waived has occurred, (C) all premiums to the PBGC have been timely paid in
full, (D) no liability, other than for premiums to the PBGC, under Title IV of ERISA has been or
would reasonably be expected to be incurred by FNB or any of its Subsidiaries and (E) the PBGC has
not instituted proceedings to terminate any such FNB Plan and, to FNB’s knowledge, no condition
exists that presents a risk that such proceedings will be instituted or which would reasonably be
expected to constitute grounds under Section 4042 of ERISA for the termination of, or the
appointment of a trustee to administer, any such FNB Plan.

          (f) (i) No FNB Benefit Plan is a Multiemployer Plan or a Multiple Employer Plan, (ii) none of
FNB and its Subsidiaries nor any of their respective ERISA Affiliates has, at any time during the
last six years, contributed to or been obligated to contribute to any Multiemployer Plan or
Multiple Employer Plan and (iii) none of FNB and its Subsidiaries nor any of their respective ERISA
Affiliates has incurred, during the last six years, any Withdrawal Liability that has not been
satisfied in full. There does not now exist, nor do any circumstances exist that would reasonably
be expected to result in, any Controlled Group Liability that would be a liability of FNB or any of
its Subsidiaries following the Effective Time, other than such liabilities that arise solely out
of, or relate solely to, the FNB Benefit Plans. Without limiting the generality of the foregoing,
neither FNB nor any of its Subsidiaries, nor, to FNB’s knowledge, any of their respective ERISA
Affiliates, has engaged in any transaction described in Section 4069 or Section 4204 or 4212 of
ERISA.

          (g) Other than a medical retirement plan, FNB and its Subsidiaries have no liability for life,
health, medical or other welfare benefits to former employees or beneficiaries or dependents
thereof, except for health continuation coverage as required by Section 4980B of the Code, Part 6
of Title I of ERISA or applicable law and at no expense to FNB and its Subsidiaries.

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          (h)
Neither the execution nor the delivery of this Agreement nor the consummation of the
transactions this Agreement contemplates will, either alone or in conjunction with any other event,
whether contingent or otherwise, (i) result in any payment or benefit becoming due or payable, or
required to be provided, to any director, employee or independent contractor of FNB or any of its
Subsidiaries, (ii) increase the amount or value of any benefit or compensation otherwise payable or
required to be provided to any such director, employee or independent contractor, (iii) result in
the acceleration of the time of payment, vesting or funding of any such benefit or compensation or
(iv) result in any amount failing to be deductible by reason of Section 280G of the Code or would
be subject to an excise tax under Section 4999 of the Code or Section 409A of the Code.

          
(i) No labor organization or group of employees of FNB or any of its Subsidiaries has made a
pending demand for recognition or certification, and there are no representation or certification
proceedings or petitions seeking a representation proceeding presently pending or, to FNB’s
knowledge, threatened to be brought or filed, with the National Labor Relations Board or any other
labor relations tribunal or authority. Each of FNB and its Subsidiaries is in material compliance
with all applicable laws and collective bargaining agreements respecting employment and employment
practices, terms and conditions of employment, wages and hours and occupational safety and health.

     4.12 SEC Reports. FNB has previously made available to CBI an accurate and complete
copy of each final registration statement, prospectus, report, schedule and definitive proxy
statement FNB has filed since January 1, 2008 with the SEC pursuant to the Securities Act of 1933,
as amended (the “Securities Act”) or the Exchange Act (the “FNB Reports”) and prior to the date of
this Agreement, as of the date of such FNB Report, contained any untrue statement of a material
fact or omitted to state any material fact required to be stated in this Agreement or necessary in
order to make the statements made in this Agreement, in light of the circumstances in which they
were made, not misleading, except that information as of a later date, but before the date of this
Agreement, shall be deemed to modify information as of an earlier date. Since January 1, 2008, as
of their respective dates, all FNB Reports filed under the Securities Act and the Exchange Act
complied as to form in all material respects with the published rules and regulations of the SEC
with respect thereto.

     4.13 Compliance with Applicable Law. FNB and each of its Subsidiaries are not in
default in any material respect under any applicable law, statute, order, rule, regulation, policy
or guideline of any Governmental Entity applicable to FNB or any of its Subsidiaries, including the
Equal Credit Opportunity Act, the Fair Housing Act, the Community Reinvestment Act, the Home
Mortgage Disclosure Act, the Uniting and Strengthening America by Providing Appropriate Tools
Required to Intercept and Obstruct Terrorist (USA Patriot) Act of 2001, the Bank Secrecy Act, the
Dodd-Frank Wall Street Reform and Consumer Protection Act and applicable limits on loans to one
borrower, except where such

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noncompliance or default is not reasonably likely to, either individually or in the aggregate,
have a Material Adverse Effect on FNB and its Subsidiaries, taken as a whole.

     4.14 Contracts. Except for matters that have not had and would not reasonably be
likely to have, individually or in the aggregate, a Material Adverse Effect on FNB and its
Subsidiaries taken as a whole, (i) none of FNB nor any of its Subsidiaries is, with or without the
lapse of time or the giving of notice, or both, in breach or default in any material respect under
any material contract, lease, license or other agreement or instrument, (ii) to the knowledge of
FNB, none of the other parties to any such material contract, lease, license or other agreement or
instrument is, with or without the lapse of time or the giving of notice, or both, in breach or
default in any material respect thereunder and (iii) neither FNB nor any of its Subsidiaries has
received any written notice of the intention of any party to terminate or cancel any such material
contract, lease, license or other agreement or instrument whether as a termination or cancellation
for convenience or for default of FNB or any of its Subsidiaries.

     4.15 Agreements with Regulatory Agencies. Neither FNB nor any of its Subsidiaries is
subject to any cease-and-desist or other order or enforcement action issued by, or is a party to
any written agreement, consent agreement or memorandum of understanding with, or is a party to any
commitment letter or similar undertaking to, or is subject to any order or directive by, or has
been since January 1, 2008, a recipient of any supervisory letter from, or has been ordered to pay
any civil money penalty by, or since January 1, 2008, has adopted any policies, procedures or board
resolutions at the request or suggestion of any Regulatory Agency or other Governmental Entity that
currently restricts in any material respect the conduct of its business or that in any material
manner relates to its capital adequacy, its ability to pay dividends, its credit or risk management
policies, its management or its business, other than those of general application that apply to
similarly situated financial holding companies or their Subsidiaries, each item in this sentence,
whether or not set forth in the FNB Disclosure Schedule (“FNB Regulatory Agreement”), nor has FNB
or any of its Subsidiaries been advised since January 1, 2008 by any Regulatory Agency or other
Governmental Entity that it is considering issuing, initiating, ordering or requesting any such FNB
Regulatory Agreement. Each bank Subsidiary of FNB has at least a “satisfactory” rating under the
U.S. Community Reinvestment Act.

     4.16 Undisclosed Liabilities. Except for (i) those liabilities that are reflected or
reserved against on the consolidated balance sheet of FNB included in FNB’s Quarterly Report on
Form 10-Q for the fiscal quarter ended June 30, 2010 (the “FNB 10-Q”), including any notes thereto,
(ii) liabilities incurred in connection with this Agreement and the transactions contemplated
thereby and (iii) liabilities incurred in the ordinary course of business consistent with past
practice since June 30, 2010, since June 30, 2010, neither FNB nor any of its Subsidiaries has
incurred any liability of any nature whatsoever, whether absolute, accrued, contingent or otherwise
and whether due or to become due, that, either

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individually or in the aggregate, has had or is reasonably likely to have, a Material Adverse
Effect on FNB.

     4.17 Environmental Liability.

          (a) To FNB’s Knowledge, (A) FNB and its Subsidiaries are in material compliance with
applicable Environmental Laws, (B) no Contamination exceeding applicable cleanup standards or
remediation thresholds exists at real property, including buildings or other structures, currently
or formerly owned or operated by FNB or any of its Subsidiaries, that reasonably could result in a
material Environmental Liability for FNB or its Subsidiaries, (C) no Contamination exists at any
real property currently owned by a third party that reasonably could result in a material
Environmental Liability for FNB or its Subsidiaries, (D) neither FNB nor any of its Subsidiaries
has received any notice, demand letter, claim or request for information alleging any material
violation of, or liability under, any Environmental Law, (E) neither FNB nor any of its
Subsidiaries is subject to any order, decree, injunction or other agreement with any Governmental
Entity or any third party under any Environmental Law that reasonably could result in a material
Environmental Liability of FNB or its Subsidiaries and (F) FNB has set forth in the FNB Disclosure
Schedule and made available to CBI copies of all environmental reports or studies, sampling data,
correspondence and filings in its possession or relating to FNB, its Subsidiaries and any currently
owned or operated property of FNB which were prepared in the last five years.

          (b) There are no legal, administrative, arbitral or other proceedings, claims, actions, causes
of action, private environmental investigations or remediation activities or governmental
investigations of any nature seeking to impose, or that are reasonably likely to result in the
imposition, on FNB of any liability or obligation arising under common law or under any local,
state or federal environmental statute, regulation or ordinance including the Comprehensive
Environmental Response, Compensation and Liability Act of 1980, as amended, pending or threatened
against FNB, which liability or obligation is reasonably likely to have, either individually or in
the aggregate, a Material Adverse Effect on FNB. To the knowledge of FNB, there is no reasonable
basis for any such proceeding, claim, action or governmental investigation that would impose any
liability or obligation that would be reasonably likely to have, individually or in the aggregate,
a Material Adverse Effect on FNB. FNB is not subject to any agreement, order, judgment, decree,
letter or memorandum by or with any Governmental Entity or third party imposing any liability or
obligation with respect to the foregoing that is reasonably likely to have, either individually or
in the aggregate, a Material Adverse Effect on FNB.

     4.18 Reorganization. As of the date of this Agreement, FNB is not aware of any fact
or circumstance that could reasonably be expected to prevent the Merger from qualifying as a
“reorganization” within the meaning of Section 368(a) of the Code.

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     4.19 Loans; Nonperforming and Classified Assets.

          (a) Except as set forth in Section 4.19 of the FNB Disclosure Schedule, each Loan on the books
and records of FNB and its Subsidiaries was made and has been serviced in all material respects in
accordance with their customary lending standards in the ordinary course of business, is evidenced
in all material respects by appropriate and sufficient documentation and, to the knowledge of FNB,
constitutes the legal, valid and binding obligation of the obligor named in this Agreement, subject
to bankruptcy, insolvency, reorganization, moratorium, fraudulent transfer and similar laws of
general applicability relating to or affecting creditor’s rights or by general equity principles.

          (b) FNB has set forth in Section 4.19 of the FNB Disclosure Schedule as to FNB and each FNB
Subsidiary as of the latest practicable date prior to the date of this Agreement: (A) any written
or, to FNB’s knowledge, oral Loan under the terms of which the obligor is 90 or more days
delinquent in payment of principal or interest, or to FNB’s knowledge, in default of any other
material provision thereof, (B) each Loan that has been classified as “substandard,” “doubtful,”
“loss” or “special mention” or words of similar import by FNB, a FNB Subsidiary or an applicable
regulatory authority, (C) a listing of OREO and (D) each Loan with any director, executive officer
or five percent or greater shareholder of FNB or a FNB Subsidiary, or to the knowledge of FNB, any
Person controlling, controlled by or under common control with any of the foregoing.

     4.20 Fiduciary Accounts. FNB and each of its Subsidiaries has properly administered
all accounts for which it acts as a fiduciary, including but not limited to accounts for which it
serves as a trustee, agent, custodian, personal representative, guardian, conservator or investment
advisor, in accordance with the terms of the governing documents and applicable laws and
regulations. Neither FNB nor any of its Subsidiaries, nor any of their respective directors,
officers or employees, has committed any breach of trust to FNB’s knowledge with respect to any
fiduciary account and the records for each such fiduciary account are true and correct and
accurately reflect the assets of such fiduciary account.

     4.21 Allowance for Loan Losses. FNB Bank’s allowance for loan losses is sufficient at
the date of this Agreement for its reasonably anticipated loan losses, is in compliance with the
standards established by applicable Governmental Entities and GAAP and, to the knowledge of FNB, is
adequate.

ARTICLE 5

COVENANTS RELATING TO CONDUCT OF BUSINESS

     5.1 Conduct of Businesses Prior to the Effective Time.

          (a) During the period from the date of this Agreement to the Effective Time, except as
expressly contemplated or permitted by this Agreement, each of FNB and CBI shall,

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and shall cause each of its respective Subsidiaries to, (i) conduct its business in the
ordinary course in all material respects, (ii) use reasonable best efforts to maintain and preserve
intact its business organization, employees and advantageous business relationships and retain the
services of its key officers and key employees and (iii) take no action that would reasonably be
expected to prevent or materially impede or delay the obtaining of, or materially adversely affect
the ability of the parties expeditiously to obtain, any necessary approvals of any Regulatory
Agency, Governmental Entity or any other person or entity required for the transactions this
Agreement contemplates or to perform its covenants and agreements under this Agreement or to
consummate the transactions this Agreement contemplates or thereby.

          (b) CBI agrees that between the date of this Agreement and the Effective Time, the materials
presented at the meetings of the Loan Committee of CBI’s Board of Directors shall be provided to
FNB within three business days after each meeting and CBI shall provide the minutes of each meeting
to FNB within five days after such meeting.

     5.2 CBI Forbearances. During the period from the date of this Agreement to the
Effective Time, except as set forth in Section 5.2 of the CBI Disclosure Schedule and except as
expressly contemplated or permitted by this Agreement, CBI shall not, and shall not permit any of
its Subsidiaries to, without the prior written consent of FNB, which shall not be unreasonably
withheld:

          (a) (i) other than dividends and distributions by a direct or indirect Subsidiary of CBI to
CBI or any direct or indirect wholly owned Subsidiary of CBI, declare, set aside or pay any
dividends on, make any other distributions in respect of, or enter into any agreement with respect
to the voting of, any of its capital stock, (ii) split, combine or reclassify any of its capital
stock or issue or authorize the issuance of any other securities in respect of, in lieu of, or in
substitution for, shares of its capital stock, except upon the exercise of CBI Stock Options that
are outstanding or are required by an existing contract, plan, arrangement or policy, as of the
date of this Agreement in accordance with their present terms or (iii) purchase, redeem or
otherwise acquire any shares of capital stock or other securities of CBI or any of its
Subsidiaries, or any rights, warrants or options to acquire any such shares or other securities;

          (b) grant any stock options, restricted stock units or other equity-based award with respect
to shares of CBI Common Stock under any of the CBI Stock Plans, or otherwise, except as required by
an existing contract, plan, arrangement or policy, or grant any individual, corporation or other
entity any right to acquire any shares of its capital stock, or issue any additional shares of
capital stock or other securities, other than the issuance of CBI Common Stock upon the exercise of
CBI Stock Options;

          (c) amend the CBI Articles, CBI Bylaws or other comparable organizational documents;

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          (d) (i) acquire or agree to acquire by merging or consolidating with, or by purchasing any
assets or any equity securities of, or by any other manner, any business or any Person, or
otherwise acquire or agree to acquire any assets except inventory or other similar assets in the
ordinary course of business consistent with past practice or (ii) open, acquire, close or sell any
branches;

          (e) sell, lease, license, mortgage or otherwise encumber or subject to any Lien, or otherwise
dispose of any of its properties or assets other than securitizations and other transactions in the
ordinary course of business consistent with past practice;

          (f) except for borrowings having a maturity of not more than 30 days under existing credit
facilities, or renewals, extensions or replacements therefor that do not increase the aggregate
amount available thereunder and that do not provide for any termination fees or penalties, prohibit
pre-payments or provide for any pre-payment penalties, or contain any like provisions limiting or
otherwise affecting the ability of CBI or its applicable Subsidiaries or successors from
terminating or pre-paying such facilities, or contain financial terms less advantageous than
existing credit facilities, and as they may be so renewed, extended or replaced (“Credit
Facilities”) that are incurred in the ordinary course of business consistent with past practice,
incur any indebtedness for borrowed money or issue any debt securities or assume, guarantee or
endorse, or otherwise become responsible for the obligations of any Person, other than CBI or any
wholly owned Subsidiary thereof, or, other than in the ordinary course of business consistent with
past practice, make any loans, advances or capital contributions to, or investments in, any Person
other than its wholly owned Subsidiaries and as a result of ordinary advances and reimbursements to
employees and endorsements of banking instruments;

          (g) change in any material respect its accounting methods, except as may be necessary and
appropriate to conform to changes in tax laws requirements, changes in GAAP or regulatory
accounting principles or as required by CBI’s independent auditors or its Regulatory Agencies;

          (h) change in any material respects its underwriting, operating, investment or risk management
or other similar policies of CBI or any of its Subsidiaries except as required by applicable law or
policies imposed by any Regulatory Agency or any Governmental Entity;

          (i) make, change or revoke any material Tax election, file any material amended Tax Return,
enter into any closing agreement with respect to a material amount of Taxes, settle any material
Tax claim or assessment or surrender any right to claim a refund of a material amount of Taxes;

          (j) other than in the ordinary course of business consistent with past practice, terminate or
waive any material provision of any material agreement, contract or

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obligation (collectively, “Contracts”) other than normal renewals of Contracts without
materially adverse changes, additions or deletions of terms, provided that Contracts under Section
5.1(s) shall be subject to that subsection rather than this clause, or enter into or renew any
agreement or contract or other binding obligation of CBI or its Subsidiaries containing (i) any
restriction on the ability of CBI and its Subsidiaries, or, after the Merger, FNB and its
Subsidiaries, to conduct its business as it is presently being conducted or currently contemplated
to be conducted after the Merger or (ii) any restriction on CBI or its Subsidiaries, or, after the
Merger, FNB and its Subsidiaries, in engaging in any type of activity or business;

          (k) incur any capital expenditures in excess of $50,000 individually or $100,000 in the
aggregate;

          (l) except as required by agreements or instruments in effect on the date of this Agreement,
alter in any material respect, or enter into any commitment to alter in any material respect, any
material interest in any corporation, association, joint venture, partnership or business entity in
which CBI directly or indirectly holds any equity or ownership interest on the date of this
Agreement, other than any interest arising from any foreclosure, settlement in lieu of foreclosure
or troubled loan or debt restructuring in the ordinary course of business consistent with past
practice;

          (m) agree or consent to any material agreement or material modifications of existing
agreements with any Regulatory Authority or Governmental Entity in respect of the operations of its
business, except as required by law or regulation based upon the advice of CBI’s legal advisors;

          (n) pay, discharge, settle or compromise any claim, action, litigation, arbitration, suit,
investigation or proceeding, other than any such payment, discharge, settlement or compromise in
the ordinary course of business consistent with past practice that involves solely money damages in
an amount not in excess of $50,000 individually or $100,000 in the aggregate;

          (o) issue any broadly distributed communication of a general nature to employees, including
general communications relating to benefits and compensation, or customers without the prior
approval of FNB, which will not be unreasonably delayed or withheld, except for communications in
the ordinary course of business that do not relate to the Merger or other transactions this
Agreement contemplates;

          (p) take any action, or knowingly fail to take any action, which action or failure to act
would be reasonably expected to prevent the Merger from qualifying as a reorganization within the
meaning of Section 368(a) of the Code;

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          (q) take any action that would materially impede or delay the ability of the parties to obtain
any necessary approvals of any Regulatory Agency or other Governmental Entity required for the
transactions this Agreement contemplates;

          (r) take any action that is intended or is reasonably likely to result in any of its
representations or warranties set forth in this Agreement being or becoming untrue in any material
respect at any time prior to the Effective Time, or in any of the conditions to the Merger set
forth in Article VII not being satisfied or in a violation of any provision of this Agreement,
except, in every case, as may be required by applicable law;

          (s) make, renew or otherwise modify any Loan, loan commitment, letter of credit or other
extension of credit (individually, a “Loan” and collectively, “Loans”) to any Person if the Loan is
an existing credit on the books of CBI and classified as “substandard,” “doubtful” or “loss” or
such Loan is in an amount in excess of $150,000 and classified as “special mention” without the
approval of FNB, or make, renew or otherwise modify any Loan or Loans if immediately after making
an unsecured Loan or Loans, such Person would be indebted to CBI Bank in an aggregate amount in
excess of $200,000 on an unsecured basis or undersecured, or make any fully secured Loan or Loans
to any Person, except for any Loan secured by a first mortgage on single family owner-occupied real
estate, if, immediately after making a secured Loan, such Person would be indebted to CBI Bank in
an aggregate amount in excess of $1,500,000 or, without approval of FNB, shall not make, renew or
otherwise modify any Loan or Loans secured by an owner-occupied 1-4 single-family residence with a
principal balance in excess of $500,000 or in any event if such Loan does not conform with CBI
Bank’s Credit Policy Manual if, in the case of any of the foregoing types of Loan or Loans, FNB
shall object thereto within three business days after receipt of notice of such proposed Loan, and
the failure to provide a written objection within three business days after receipt of notice of
such proposed Loan from CBI Bank shall be deemed as the approval of FNB to make such Loan or Loans.
FNB reserves the right to observe the loan approval process by the Board of Directors of CBI or its
Loan Committee;

          (t) enter into or amend or renew any employment, consulting, severance or similar agreements
or arrangements with any director, officer or employee of CBI or its Subsidiaries or grant any
salary or wage increase or increase any employee benefit, including discretionary or other
incentive or bonus payments, except in accordance with the terms of any applicable CBI incentive
plan, make any grants of awards to newly hired employees or accelerate the vesting of any unvested
stock options, except:

               (A) for other changes that are required by applicable law or are advisable in order to comply
with Section 409A of the Code, upon prior written notice to FNB;

               (B) to pay the amounts or to provide payments under plans and/or commitments set forth in the
CBI Disclosure Schedule;

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               (C) for retention bonuses to such persons and in such amounts as are mutually agreed by FNB
and CBI; or

               (D) severance payments pursuant to the severance agreements or employment agreements that are
set forth in Section 5.2 of the CBI Disclosure Schedule.

          (u) Hire any person as an employee of CBI or any of its Subsidiaries or promote any employee,
except (i) to satisfy contractual obligations existing as of the date of this Agreement and set
forth in Section 5.2 of the CBI Disclosure Schedule or (ii) to fill any vacancies existing as of
the date of this Agreement and described in Section 5.2 of the CBI Disclosure Schedule or (iii) to
fill any vacancies arising after the date of this Agreement at a comparable level of compensation
with persons whose employment is terminable at the will of CBI or a Subsidiary of CBI, as
applicable, provided, however, that such total compensation for any one employee may not exceed
$40,000;

          (v) agree to take, make any commitment to take, or adopt any resolutions of its Board of
Directors in support of, any of the actions prohibited by this Section 5.2;

          (w) acquire any new loan participation or loan servicing rights;

          (x) originate, participate or purchase any new loan or other credit facility commitment
(including, without limitation, lines of credit and letters of credit) outside of its primary
market area in the Pennsylvania counties of Lackawanna, Luzerne, Monroe, Susquehanna, Wayne and
Wyoming;

          (y) engage in any new loan transaction with an officer or director or related party; or

          (z) purchase any equity securities or purchase any debt securities other than debt securities
with a quality rating of “AAA” by either Standard & Poor’s Ratings Services or Moody’s Investors
Services for corporate bonds.

     Except as otherwise set forth in this Agreement and except for agreements, arrangements or
commitments entered into as a result of the transactions this Agreement contemplates, unless
provided for in a business plan, budget or similar plan delivered to FNB prior to the date of this
Agreement, in the ordinary course of business of CBI shall not include any sale, assignment,
transfer, pledge, hypothecation or other disposition of any assets having a book or market value,
whichever is greater, in the aggregate in excess of $100,000, other than (i) pledges of, or liens
on, assets to secure government deposits, advances made to CBI by the Federal Home Loan Bank Board
or the Federal Reserve Board, the payment of taxes, assessments, or similar charges which are not
yet due and payable, the payment of deposits, repurchase agreements, bankers acceptances, “treasury
tax and loan” accounts consistent with past practices, or the collection and/or processing of
checks, drafts of letters of credit consistent with customary banking practices or the exercise of
trust powers,

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(ii) sales of assets received in satisfaction of debts previously contracted in the ordinary course
of its banking business or (iii) issuance of loans, sales of previously purchased government
guaranteed loans, or transactions in the investment securities portfolio by CBI or repurchase
agreements made, in each case, in the ordinary course of banking business.

     5.3 FNB Forbearances. During the period from the date of this Agreement to the
Effective Time, except as expressly contemplated or permitted by this Agreement, FNB shall not, and
shall not permit any of its Subsidiaries to, without the prior written consent of CBI:

          (a) amend, repeal or otherwise modify any provision of the FNB Charter or the FNB Bylaws other
than those that would not be adverse to CBI or its shareholders or those that would not impede
FNB’s ability to consummate the transactions this Agreement contemplates;

          (b) take any action, or knowingly fail to take any action, which action or failure to act
would be reasonably expected to prevent the Merger from qualifying as a reorganization within the
meaning of Section 368(a) of the Code;

          (c) take any action that is intended or is reasonably likely to result in any of its
representations or warranties set forth in this Agreement being or becoming untrue in any material
respect at any time prior to the Effective Time, or in any of the conditions to the Merger set
forth in Article VII not being satisfied or in a violation of any provision of this Agreement,
except, in every case, as may be required by applicable law;

          (d) make any material investment either by purchase of stock or securities, contributions to
capital, property transfers or purchase of any property or assets of any other individual,
corporation or other entity, in any case to the extent such action would be reasonably expected to
prevent, or materially impede or delay, the consummation of the transactions this Agreement
contemplates;

          (e) take any action that would materially impede or delay the ability of the parties to obtain
any necessary approvals of any Regulatory Agency or other Governmental Entity required for the
transactions this Agreement contemplates; or

          (f) agree to take, make any commitment to take, or adopt any resolutions of its board of
directors in support of, any of the actions prohibited by this Section 5.3.

     5.4 Voting Agreements. CBI shall deliver within 30 days after the date of this
Agreement an executed Voting Agreement from each member of the CBI Board of Directors and Joseph P.
Moore, Jr.

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ARTICLE 6

ADDITIONAL AGREEMENTS

     6.1 Regulatory Matters.

          (a) FNB agrees to prepare and file, as soon as practicable, the Registration Statement with
the SEC in connection with the issuance of FNB Common Stock in the Merger including the Proxy
Statement and prospectus and other proxy solicitation materials of CBI constituting a part thereof
and all related documents. CBI shall prepare and furnish to FNB such information relating to it
and its directors, officers and shareholders as may be reasonably required in connection with the
above referenced documents based on its knowledge of and access to the information required for
said documents, and CBI, and its legal, financial and accounting advisors, shall have the right to
review in advance and approve, which approval shall not be unreasonably withheld such Registration
Statement prior to its filing. CBI agrees to cooperate with FNB and FNB’s counsel and accountants
in requesting and obtaining appropriate opinions, consents and letters from its financial advisor
and independent auditor in connection with the Registration Statement and the Proxy Statement. As
long as CBI has cooperated as described above, FNB agrees to file, or cause to be filed, the
Registration Statement and the Proxy Statement with the SEC as promptly as reasonably practicable.
Each of CBI and FNB agrees to use its commercially reasonable efforts to cause the Registration
Statement to be declared effective under the Securities Act as promptly as reasonably practicable
after the filing thereof. FNB also agrees to use its reasonable best efforts to obtain all
necessary state securities law or “Blue Sky” permits and approvals required to carry out the
transactions this Agreement contemplates. After the SEC has declared the Registration Statement
effective under the Securities Act, CBI shall promptly mail at its expense the Proxy Statement to
its shareholders.

          (b) Each of CBI and FNB agree that none of the respective information supplied or to be
supplied by it for inclusion or incorporation by reference in the Registration Statement shall, 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 in this Agreement or necessary to make the statements
in this Agreement not misleading. Each of CBI and FNB agree that none of the respective
information supplied or to be supplied by it for inclusion or incorporation by reference in the
Proxy Statement and any amendment or supplement thereto shall contain any untrue statement of a
material fact or omit to state any material fact required to be stated in this Agreement or
necessary to make the statements in this Agreement not misleading. Each of CBI and FNB further
agree that if such party shall become aware prior to the Effective Time of any information
furnished by such party that would cause any of the statements in the Registration Statement or 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 in this Agreement not false or misleading, to
promptly

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inform the other parties thereof and an appropriate amendment or supplement describing such
information shall be filed promptly with the SEC and, to the extent required by law, disseminated
to the shareholders of CBI and/or FNB.

          (c) FNB agrees to advise CBI, promptly after FNB 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 FNB Common Stock for offering
or sale in any jurisdiction, of the initiation or, to the extent FNB is aware thereof, 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.

          (d) The parties shall cooperate with each other and use their respective reasonable best
efforts to promptly prepare and file all necessary documentation, to effect all applications,
notices, petitions and filings, to obtain as promptly as practicable all permits, consents,
approvals and authorizations of all third parties, Regulatory Agencies and Governmental Entities
that are necessary or advisable to consummate the transactions this Agreement contemplates,
including the Merger, and to comply with the terms and conditions of all such permits, consents,
approvals and authorizations of all such Regulatory Agencies and Governmental Entities. CBI and
FNB shall have the right to review in advance, and, to the extent practicable, each will consult
the other on, in each case subject to applicable laws relating to the exchange of information, all
the information relating to CBI or FNB, as the case may be, and any of their respective
Subsidiaries, which appear in any filing made with, or written materials submitted to, any third
party, Regulatory Agency or any Governmental Entity in connection with the transactions this
Agreement contemplates. In exercising the foregoing right, each of the parties shall act
reasonably and as promptly as practicable. The parties shall consult with each other with respect
to the obtaining of all permits, consents, approvals and authorizations of all third parties,
Regulatory Agencies and Governmental Entities necessary or advisable to consummate the transactions
this Agreement contemplates and each party will keep the other apprised of the status of matters
relating to completion of the transactions this Agreement contemplates. Notwithstanding the
foregoing, nothing in this Agreement shall be deemed to require FNB to take any action, or commit
to take any action, or agree to any condition or restriction, in connection with obtaining the
foregoing permits, consents, approvals and authorizations of third parties, Regulatory Agencies or
Governmental Entities, that would reasonably be expected to have a Material Adverse Effect on FNB
and its Subsidiaries, including the Surviving Company after giving effect to the Merger, taken as a
whole after the Effective Time (a “Materially Burdensome Regulatory Condition”). In addition, CBI
agrees to cooperate and use its reasonable best efforts to assist FNB in preparing and filing such
petitions and filings, and in obtaining such permits, consents, approvals and authorizations of
third parties, Regulatory Agencies and Governmental Entities, that may be necessary or advisable to
effect any mergers and/or consolidations of Subsidiaries of CBI and FNB following consummation of
the Merger.

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          (e) Each of FNB and CBI shall, upon request, furnish to the other all information concerning
itself, its Subsidiaries, directors, officers and shareholders and such other matters as may be
reasonably necessary or advisable in connection with the Proxy Statement, the Registration
Statement or any other statement, filing, notice or application made by or on behalf of FNB, CBI or
any of their respective Subsidiaries to any Regulatory Agency or Governmental Entity in connection
with the Merger and the other transactions this Agreement contemplates.

          (f) Each of FNB and CBI shall promptly advise the other upon receiving any communication from
any Regulatory Agency or Governmental Entity whose consent or approval is required for consummation
of the transactions this Agreement contemplates that causes such party to believe that there is a
reasonable likelihood that any Requisite Regulatory Approval, as defined in Section 7.1(c), will
not be obtained or that the receipt of any such approval may be materially delayed.

          (g) CBI and FNB shall consult with each other before issuing any press release with respect to
the Merger or this Agreement and shall not issue any such press release or make any such public
statements without the prior consent of the other party, which shall not be unreasonably withheld;
provided, however, that a party may, without the prior consent of the other party, but after such
consultation, to the extent practicable under the circumstances, issue such press release or make
such public statements as may upon the advice of outside counsel be required by law or the rules or
regulations of the SEC, the FDIC, the OCC, the NYSE or FINRA. In addition, the Chief Executive
Officers of CBI and FNB shall be permitted to respond to appropriate questions about the Merger
from the press. CBI and FNB shall cooperate to develop all public announcement materials and make
appropriate management available at presentations related to the Merger as reasonably requested by
the other party.

     6.2 Access to Information.

          (a) Upon reasonable notice and subject to applicable laws relating to the exchange of
information, each of CBI and FNB shall, and shall cause each of its Subsidiaries to, afford to the
officers, employees, accountants, counsel and other representatives of the other, reasonable
access, during normal business hours during the period prior to the Effective Time, to all its
properties, books, contracts, commitments and records, and, during such period, the parties shall,
and shall cause its Subsidiaries to, make available to the other party all other information
concerning its business, properties and personnel as the other may reasonably request. CBI shall,
and shall cause each of its Subsidiaries to, provide to FNB a copy of each report, schedule and
other document filed or received by it during such period pursuant to the requirements of federal
or state banking laws other than reports or documents that such party is not permitted to disclose
under applicable law. Neither CBI nor FNB nor any of their Subsidiaries shall be required to
provide access to or to disclose information where such access or disclosure would jeopardize the
attorney-client privilege of

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such party or its Subsidiaries or contravene any law, rule, regulation, order, judgment,
decree, fiduciary duty or binding agreement entered into prior to the date of this Agreement. The
parties shall make appropriate substitute disclosure arrangements under circumstances in which the
restrictions of the preceding sentence apply to the extent possible in light of those restrictions.

          (b) All information and materials provided pursuant to this Agreement shall be subject to the
provisions of the Confidentiality Agreements entered into between CBI and FNB (the “Confidentiality
Agreements”).

          (c) No investigation by either of the parties or their respective representatives shall affect
the representations and warranties of the other set forth in this Agreement.

     6.3 CBI Shareholder Approval. CBI shall call a meeting of its shareholders for the
purpose of obtaining the requisite shareholder approval required in connection with this Agreement
and the Merger (the “CBI Shareholders Meeting”), and shall use its reasonable best efforts to call
such meeting as soon as reasonably practicable following the Registration Statement being declared
effective giving reasonable time for printing and mailing. Subject to Section 6.11, the Board of
Directors of CBI shall recommend approval and adoption of this Agreement, the Merger and the other
transactions this Agreement contemplates, by CBI’s shareholders and shall include such
recommendation in the Proxy Statement (the “CBI Recommendation”). Without limiting the generality
of the foregoing, CBI’s obligations pursuant to the first sentence of this Section 6.3 shall not be
affected by the commencement, public proposal, public disclosure or communication to CBI of any
Acquisition Proposal, as defined in Section 6.11(e). Notwithstanding the foregoing, if this
Agreement is terminated pursuant to Section 8.1, CBI’s obligations pursuant to the first sentence
of this Section 6.3 shall terminate.

     6.4 Commercially Reasonable Efforts; Cooperation. Each of CBI and FNB agrees to
exercise good faith and use its commercially reasonable best efforts to satisfy the various
covenants and conditions to Closing in this Agreement, and to consummate the transactions this
Agreement contemplates as promptly as possible.

     6.5 NYSE Approval. FNB shall cause the shares of FNB Common Stock to be issued in the
Merger to be approved for listing on the NYSE, subject to official notice of issuance, prior to the
Effective Time.

     6.6 Benefit Plans.

          (a) As soon as administratively practicable after the Effective Time, FNB shall take all
reasonable action so that employees of CBI and its Subsidiaries shall be entitled to participate in
each employee benefit plan, program or arrangement of FNB of general

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applicability with the exception of FNB’s defined benefit pension plan (the “FNB Plans”) to
the same extent as similarly-situated employees of FNB and its Subsidiaries, it being understood
that inclusion of the employees of CBI and its Subsidiaries in the FNB Plans may occur at different
times with respect to different plans, provided that coverage shall be continued under
corresponding Benefit Plans of CBI and its Subsidiaries until such employees are permitted to
participate in the FNB Plans and provided further, however, that nothing contained in this
Agreement shall require FNB or any of its Subsidiaries to make any grants to any former employee of
CBI under any discretionary equity compensation plan of FNB. FNB shall cause each FNB Plans in
which employees of CBI and its Subsidiaries are eligible to participate to recognize, for purposes
of determining eligibility to participate in, the vesting of benefits under the FNB Plans, the
service of such employees with CBI and its Subsidiaries to the same extent as such service was
credited for such purpose by CBI, provided, however, that such service shall not be recognized to
the extent that such recognition would result in a duplication of benefits. Except for the
commitment to continue those Benefit Plans of CBI and its Subsidiaries that correspond to FNB Plans
until employees of CBI and its Subsidiaries are included in such FNB Plans, nothing in this
Agreement shall limit the ability of FNB to amend or terminate any of CBI’s Benefit Plans in
accordance with and to the extent permitted by their terms at any time permitted by such terms.

          (b) At and following the Effective Time, and except as otherwise provided in Section 6.6(d)
FNB shall honor, and the Surviving Company shall continue to be obligated to perform, in accordance
with their terms, all benefit obligations to, and contractual rights of, current and former
employees of CBI and its Subsidiaries and current and former directors of CBI and its Subsidiaries
existing as of the Effective Date, as well as all employment, executive severance or
“change-in-control” or similar agreements, plans or policies of CBI that are set forth on Schedule
6.6(b) of the CBI Disclosure Schedule, subject to the receipt of any necessary approval from any
Governmental Entity. The severance or termination payments that are payable pursuant to such
agreements, plans or policies of CBI are set forth on Schedule 6.6(b) of the CBI Disclosure
Schedule. Following the consummation of the Merger and for one year thereafter, FNB shall, to the
extent not duplicative of other severance benefits, pay employees of CBI or its Subsidiaries who
are terminated for other than cause, severance as set forth on Schedule 6.6(b) of the FNB
Disclosure Schedule. Following the expiration of the foregoing severance policy, any years of
service recognized for purposes of this Section 6.6(b) will be taken into account under the terms
of any applicable severance policy of FNB or its Subsidiaries.

          (c) At such time as employees of CBI and its Subsidiaries become eligible to participate in a
medical, dental or health plan of FNB or its Subsidiaries, FNB shall cause each such plan to (i)
waive any preexisting condition limitations to the extent such conditions are covered under the
applicable medical, health or dental plans of FNB and (ii) waive any waiting period limitation or
evidence of insurability requirement that would otherwise be applicable to such employee or
dependent on or after the Effective Time to the extent such

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employee or dependent had satisfied any similar limitation or requirement under an analogous
Benefit Plan prior to the Effective Time.

          (d) Immediately prior to the Effective Time, CBI shall, at the written request of FNB, freeze
or terminate such of the CBI Benefit Plans as is requested by FNB.

          (e) By August 31, 2010, the five principal executive officers of CBI identified in Schedule
6.6(e) shall deliver to CBI and FNB a supplemental letter pursuant to which such officer agrees to
continue in the employment of CBI for the respective period of time set forth in Schedule 6.6(e)
and, were such officer to leave the employment of CBI prior to the expiration of such period, such
officer shall not be entitled to receive any severance or change of control benefits under such
agreement.

     6.7 Indemnification; Directors’ and Officers’ Insurance.

          (a) In the event of any threatened or actual claim, action, suit, proceeding or investigation,
whether civil, criminal or administrative, including any such claim, action, suit, proceeding or
investigation (each a “Claim”) in which any individual who is now, or has been at any time prior to
the date of this Agreement, or who becomes prior to the Effective Time, a director or officer of
CBI or any of its Subsidiaries or who is or was serving at the request of CBI or any of its
Subsidiaries as a director, officer, employee, member or otherwise of another Person (the
“Indemnified Parties”), is, or is threatened to be, made a party based in whole or in part on, or
arising in whole or in part out of, or pertaining to (i) the fact that he is or was a director or
officer of CBI or any of its Subsidiaries or was serving at the request of CBI or any of its
Subsidiaries as a director or officer of another Person or (ii) this Agreement or any of the
transactions this Agreement contemplates, whether asserted or arising before or after the Effective
Time, the parties shall cooperate and use their best efforts to defend against and respond thereto.
From and after the Effective Time, FNB shall, and shall cause the Surviving Company to, indemnify,
defend and hold harmless, as and to the fullest extent currently provided under applicable law, the
CBI Articles, the CBI Bylaws and any agreement set forth in Section 6.7 of the CBI Disclosure
Schedule, each such Indemnified Party against any losses, claims, damages, liabilities, costs,
expenses, including reimbursement for reasonable fees and expenses, including fees and expenses of
legal counsel, including local counsel, incurred in advance of the final disposition of any claim,
suit, proceeding or investigation upon receipt of any undertaking required by applicable law,
judgments, fines and amounts paid in settlement in connection with any such threatened or actual
claim, action, suit, proceeding or investigation.

          (b) FNB and the Surviving Company agree that all rights to indemnification of liabilities,
including advancement of expenses, and all limitations with respect thereto, existing in favor of
any Indemnified Person, as provided in the CBI Articles or the CBI Bylaws, shall survive the Merger
and shall continue in full force and effect, without any amendment thereto; provided, however, that
in the event any Claim is asserted or made, any

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determination required to be made with respect to whether an Indemnified Person’s conduct
complies with the standards set forth under the PBCL, the CBI Articles or the CBI Bylaws, as the
case may be, shall be made by independent legal counsel, whose fees and expenses shall be paid by
FNB and the Surviving Company, selected by such Indemnified Person and reasonably acceptable to
FNB; and, provided further that nothing in this Section 6.7 shall impair any rights or obligations
of any current or former director or officer of CBI or its Subsidiaries, including pursuant to the
respective organizational documents of CBI, or their respective Subsidiaries, under the PBCL or
otherwise.

          (c) Prior to the Effective Time, FNB shall obtain at the expense of CBI, and FNB shall
maintain for a period of six years following the Effective Time, directors’ and officers’ liability
insurance and fiduciary liability insurance policies in respect of acts or omissions occurring at
or prior to the Effective Time, including the transactions this Agreement contemplates, covering
the Indemnified Persons who as of the Effective Time are covered by CBI’s directors’ and officers’
liability insurance or fiduciary liability insurance policies, provided that FNB may substitute
therefor policies of at least the same coverage and amounts containing terms and conditions that
are not less advantageous than such policies of CBI or single premium tail coverage with policy
limits equal to CBI’s existing coverage limits, provided that in no event shall FNB be required to
expend for any one year an amount in excess of 150% of the annual premium currently paid by CBI for
such insurance (the “Insurance Amount”), and further provided that if FNB is unable to maintain or
obtain the insurance called for by this Section 6.7(c) as a result of the preceding provision, FNB
shall use its commercially reasonable best efforts to obtain the most advantageous coverage as is
available for the maximum Insurance Amount. The provisions of the immediately preceding sentence
shall be deemed to have been satisfied if prepaid policies have been obtained prior to the
Effective Time from an insurer or insurers selected by FNB that have an insurer financial strength
rating by A.M. Best Co. of at least “A,” which policies provide the Indemnified Persons with
coverage, from the Effective Time to the sixth anniversary of the Effective Time, including in
respect of the transactions this Agreement contemplates, on terms that are no less advantageous to
Indemnified Persons than CBI’s D&O Insurance existing immediately prior to the date of this
Agreement. If such prepaid policies have been obtained prior to the Effective Time, then the FNB
shall maintain such policies in full force and effect and continue the obligations thereunder.

          (d) The provisions of this Section 6.7 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.

     6.8 Additional Agreements. In case at any time after the Effective Time any further
action is necessary or desirable to carry out the purposes of this Agreement, including any merger
between a Subsidiary of FNB, on the one hand, and a Subsidiary of CBI, on the other hand, or to
vest the Surviving Company with full title to all properties, assets, rights,

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approvals, immunities and franchises of either party to the Merger, the proper officers and
directors of each party and their respective Subsidiaries shall take all such necessary action as
may be reasonably requested by, and at the sole expense of, FNB.

     6.9 Advice of Changes. Each of FNB and CBI shall promptly advise the other of any
change or event (i) having or reasonably likely to have a Material Adverse Effect on it or (ii)
that it believes would or would be reasonably likely to cause or constitute a material breach of
any of its representations, warranties or covenants contained in this Agreement; provided, however,
that no such notification shall affect the representations, warranties, covenants or agreements of
the parties, or remedies with respect thereto, or the conditions to the obligations of the parties
under this Agreement; provided, further, that a failure to comply with this Section 6.9 shall not
constitute the failure of any condition set forth in Article VII to be satisfied unless the
underlying Material Adverse Effect or material breach would independently result in the failure of
a condition set forth in Article VII to be satisfied.

     6.10 Dividends. After the date of this Agreement, CBI shall not declare or pay any
dividend in respect of CBI Common Stock.

     6.11 Certain Actions.

          (a) From the date of this Agreement through the Effective Time, except as otherwise permitted
by this Section 6.11, CBI will not, and will not authorize or permit any of its directors,
officers, agents, employees, investment bankers, attorneys, accountants, advisors, agents,
affiliates or representatives (collectively, “CBI Representatives”) to, directly or indirectly, (i)
initiate, solicit, encourage or take any action to facilitate, including by way of furnishing
information, any Acquisition Proposal, as defined in Section 6.11(e)(i), or any inquiries with
respect to or the making of any Acquisition Proposal, (ii) enter into or participate in any
discussions or negotiations with, furnish any information relating to CBI or any of its
Subsidiaries or afford access to the business, properties, assets, books or records of CBI or any
of its Subsidiaries to, otherwise cooperate in any way with, or knowingly assist, participate in,
facilitate or encourage any effort by any third party that is seeking to make, or has made, an
Acquisition Proposal or (iii) except in accordance with Section 8.1(g), approve, endorse or
recommend or enter into any letter of intent or similar document or any contract, agreement or
commitment contemplating or otherwise relating to an Acquisition Proposal.

          (b) Notwithstanding anything in this Agreement to the contrary, CBI and its Board of Directors
shall be permitted (i) to comply with Rule 14d-9 and Rule 14e-2 promulgated under the Exchange Act
with regard to an Acquisition Proposal provided that the Board of Directors of CBI shall not
withdraw or modify in a manner adverse to FNB the CBI Recommendation except as set forth in
subsection (iii) below, (ii) to engage in any discussions or negotiations with, and provide any
information to, any third party in response to a Superior Proposal, as defined in Section
6.11(e)(ii), by any such third party, if and only to the extent that (x) CBI’s Board of Directors
concludes in good faith, after consultation with

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outside counsel, that failure to do so could reasonably be expected to breach its fiduciary
duties under applicable law, (y) prior to providing any information or data to any third party in
connection with a Superior Proposal by any such third party, CBI’s Board of Directors receives from
such third party an executed confidentiality agreement, which confidentiality terms shall be no
less favorable to CBI than those contained in the Confidentiality Agreements between CBI and FNB, a
copy of which executed confidentiality agreement shall have been provided to FNB for informational
purposes and (z) at least 72 hours prior to providing any information or data to any third party or
entering into discussions or negotiations with any third party, CBI promptly notifies FNB in
writing of the name of such third party and the material terms and conditions of any such Superior
Proposal and (iii) to withdraw, modify, qualify in a manner adverse to FNB, condition or refuse to
make the CBI Recommendation (the “Change in CBI Recommendation”) if CBI’s Board of Directors
concludes in good faith, after consultation with outside counsel and financial advisors, that
failure to do so could reasonably be expected to breach its fiduciary duties under applicable law.

          (c) CBI will promptly, and in any event within 24 hours, notify FNB in writing of the receipt
of any Acquisition Proposal or any information related thereto, which notification shall describe
the Acquisition Proposal and identify the third party making the same.

          (d) CBI agrees that it will, and will cause the CBI Representatives to, immediately cease and
cause to be terminated any activities, discussions or negotiations existing as of the date of this
Agreement with any parties conducted heretofore with respect to any Acquisition Proposal.

          (e) For purposes of this Agreement:

               (i) The term “Acquisition Proposal” means any inquiry, proposal or offer, filing of any
regulatory application or notice, whether in draft or final form, or disclosure of an intention to
do any of the foregoing from any person relating to any (w) direct or indirect acquisition or
purchase of a business that constitutes a substantial, i.e., 20% or more, portion of the net
revenues, net income or net assets of CBI and its Subsidiaries, taken as a whole, (x) direct or
indirect acquisition or purchase of CBI Common Stock after the date of this Agreement by a Person
who on the date of this Agreement does not own 10% or more of CBI Common Stock and such Person by
reason of such purchase or acquisition first becomes the owner of 10% or more of CBI Common Stock
after the date of this Agreement or the direct or indirect acquisition or purchase of 5% or more of
CBI Common Stock after the date of this Agreement by a Person who on the date of this Agreement
owns 10% or more of CBI Common Stock, (y) tender offer or exchange offer that if consummated would
result in any Person beneficially owning 10% or more of any class of equity securities of CBI or
(z) merger, consolidation, business combination, recapitalization, liquidation, dissolution or
similar transaction involving CBI other than the transactions this Agreement contemplates.

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               (ii) The term “Superior Proposal” means any bona fide, unsolicited written Acquisition
Proposal made by a Third Party to acquire more than 50% of the combined voting power of the shares
of CBI Common Stock then outstanding or all or substantially all of CBI’s consolidated assets for
consideration consisting of cash and/or securities that is on terms that the Board of Directors of
CBI in good faith concludes, after consultation with its financial advisors and outside counsel,
taking into account, among other things, all legal, financial, regulatory and other aspects of the
proposal and the person making the proposal, including any break-up fees, expense reimbursement
provisions and conditions to consummation, (A) is on terms that the Board of Directors of CBI in
its good faith judgment believes to be more favorable to CBI than the Merger, (B) for which
financing, to the extent required, is then fully committed or reasonably determined to be available
by the Board of Directors of CBI and (C) is reasonably capable of being completed.

          (f) If a Payment Event, as defined in Section 6.11(g), occurs, CBI shall pay to FNB by wire
transfer of immediately available funds, within two business days following such Payment Event, a
fee of $2.8 million (the “Break-up Fee”), provided, however, that if a Payment Event occurs, CBI
shall have no obligation to pay FNB’s expenses under Section 9.3(b).

          (g) The term “Payment Event” means any of the following:

               (i) the termination of this Agreement by FNB pursuant to Section 8.1(f)(i);

               (ii) the termination of this Agreement by CBI pursuant to Section 8.1(g);

               (iii) the termination of this Agreement pursuant to any other Section following the
commencement of a tender offer or exchange offer for 25% or more of the outstanding shares of CBI
Common Stock and CBI shall not have sent to its shareholders, within 10 business days after the
commencement of such tender offer or exchange offer, a statement that the Board of Directors of CBI
recommends rejection of such tender offer or exchange offer; or

               (iv) the occurrence of any of the following events within 18 months of the termination of this
Agreement pursuant to Section 8.1(f)(i), provided that an Acquisition Proposal shall have been made
by a Third Party after the date of this Agreement and prior to such termination that shall not have
been withdrawn in good faith prior to such termination: (A) CBI enters into an agreement to merge
with or into, or be acquired, directly or indirectly, by merger or otherwise by, such Third Party,
(B) such Third Party, directly or indirectly, acquires substantially all of the total assets of CBI
and its Subsidiaries, taken as a whole or (C) such Third Party, directly or indirectly, acquires
more than 50% of the outstanding shares of

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CBI Common Stock. As used in this Agreement, “Third Party” means any person as defined in
Section 13(d) of the Exchange Act other than FNB or its affiliates.

          (h) CBI acknowledges that the agreements contained in Section 6.11(e) are an integral part of
the transactions contemplated in this Agreement and that without these agreements FNB would not
enter into this Agreement. Accordingly, in the event CBI fails to pay to FNB the Break-up Fee,
promptly when due, CBI shall, in addition thereto, pay to FNB all costs and expenses, including
attorneys’ fees and disbursements, incurred in collecting such Break-up Fee together with interest
on the amount of the Break-up Fee or any unpaid portion thereof, from the date such payment was due
until the date such payment is received by FNB, accrued at the fluctuating prime rate as quoted in
The Wall Street Journal as in effect from time to time during the period.

     6.12 Transition. Commencing following the date of this Agreement, FNB and CBI shall,
and shall cause their respective Subsidiaries to, use their reasonable best efforts to facilitate
the integration, from and after the Closing, of CBI and its Subsidiaries with the businesses of FNB
and its Subsidiaries, without taking action that would, in effect, give FNB control over the
management or policies of CBI or any of its Subsidiaries. Without limiting the generality of the
foregoing, from the date of this Agreement through the Closing Date and consistent with the
performance of their day-to-day operations, the continuous operation of CBI and its Subsidiaries in
the ordinary course of business and applicable law, CBI shall cause the employees and officers of
CBI and its Subsidiaries, including the Bank, to cooperate with FNB in performing tasks reasonably
required in connection with such integration.

     6.13 Tax Representation Letters. Officers of FNB and CBI shall execute and deliver to
Duane Morris LLP, tax counsel to FNB, and Saul Ewing, LLP, special tax counsel to CBI, “Tax
Representation Letters” substantially in the form agreed to by the parties and such law firms at
such time or times as may be reasonably requested by such law firms, including at the time the
Proxy Statement and Registration Statement are declared effective by the SEC and at the Effective
Time, in connection with such tax counsel’s delivery of opinions pursuant to Section 7.2(c) and
Section 7.3(c) of this Agreement.

     6.14 Moore Voting Agreement. Joseph P. Moore, Jr. shall have entered into an
agreement with FNB in a form acceptable to FNB pursuant to which he agrees to vote all of the
shares of CBI that he owns of record or beneficially in favor of the adoption of this Agreement and
the Merger this Agreement contemplates.

ARTICLE 7

CONDITIONS PRECEDENT

     7.1 Conditions to Each Party’s Obligation to Effect the Merger. The respective
obligations of the parties to effect the Merger shall be subject to the satisfaction or waiver,

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where permitted by applicable law, at or prior to the Effective Time of the following
conditions:

          (a) Shareholder Approval. This Agreement and the Merger this Agreement contemplates
shall have been approved and adopted by the requisite affirmative vote of the holders of CBI Common
Stock entitled to vote thereon.

          (b) NYSE Listing. The shares of FNB Common Stock to be issued to the holders of CBI
Common Stock upon consummation of the Merger shall have been authorized for listing on the NYSE,
subject to official notice of issuance, provided FNB shall have used its reasonable best efforts to
cause such authorization of listing on the NYSE.

          (c) Regulatory Approvals. All regulatory approvals set forth in Sections 3.4 and 4.4
required to consummate the transactions this Agreement contemplates, including the Merger, shall
have been obtained and shall remain in full force and effect and all statutory waiting periods in
respect thereof shall have expired, all such approvals and the expiration of all such waiting
periods being referred as the “Requisite Regulatory Approvals”.

          (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) No Injunctions or Restraints; Illegality. No order, injunction or decree issued
by any court or agency of competent jurisdiction or other legal restraint or prohibition (an
“Injunction”) preventing the consummation of the Merger or any of the other transactions this
Agreement contemplates shall be in effect, provided FNB shall have used its reasonable best efforts
to have removed, lifted or resolved such legal restraint or prohibition. No statute, rule,
regulation, order, Injunction or decree shall have been enacted, entered, promulgated or enforced
by any Governmental Entity that prohibits or makes illegal consummation of the Merger.

          (f) Affiliates. Each member of the Board of Directors of CBI and any person who holds
of record or beneficially 5% or more of the outstanding shares of CBI Common Stock shall have
executed and delivered to FNB an Affiliates Letter in substantially the form of Exhibit C to this
Agreement.

     7.2 Conditions to Obligation of FNB to Effect the Merger. The obligation of FNB to
effect the Merger is also subject to the satisfaction or waiver by FNB, where permitted by
applicable law, at or prior to the Effective Time, of the following conditions:

          (a) Representations and Warranties. The representations and warranties of CBI
contained in this Agreement that are qualified by materiality, including Section 3.18, or contained
in Section 3.2 shall be true and correct as of the date of this Agreement and as of

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the Closing Date as though made on and as of the Closing Date and the representations and
warranties of CBI contained in this Agreement that are not so qualified shall be true and correct
in all material respects as of the date of this Agreement and as of the Closing Date as though made
on and as of the Closing Date, except in each case to the extent any such representation or
warranty expressly speaks as of an earlier specified date, in which case, as of such date, except
in each case where the failure of the representations and warranties, other than the
representations and warranties set forth in Section 3.1, to be so true and correct, without giving
effect to any qualification as to “material,” “materiality,” “material adverse effect” or similar
qualifications, are not, individually or in the aggregate, reasonably likely to result in a
Material Adverse Effect on CBI and FNB shall have received a certificate signed on behalf of CBI by
the Chief Executive Officer or the Chief Financial Officer of CBI to the foregoing effect.

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

          (c) Federal Tax Opinion. FNB shall have received the opinion of its counsel, Duane
Morris LLP, in form and substance reasonably satisfactory to FNB, dated the Closing Date, to the
effect that, on the basis of facts, representations and assumptions set forth in such opinion, the
Merger will be treated as a reorganization within the meaning of Section 368(a) of the Code. In
rendering such opinion, counsel may require and rely upon representations contained in certificates
of officers of CBI and FNB, reasonably satisfactory in form and substance to it.

          (d) Environmental Reports. At the request of FNB, CBI shall have furnished FNB with a
Phase I environmental study with respect to all real property owned by CBI or any of its
Subsidiaries, which Phase I environmental study shall be at the sole cost and expense of FNB, the
findings of which shall be commercially acceptable to FNB who shall not unreasonably withhold such
acceptance.

          (e) No Materially Burdensome Regulatory Condition. None of the Requisite Regulatory
Approvals shall have resulted in the imposition of a Materially Burdensome Regulatory Condition.

     7.3 Conditions to Obligation of CBI to Effect the Merger. The obligation of CBI to
effect the Merger is also subject to the satisfaction or waiver by CBI, where permitted by
applicable law, at or prior to the Effective Time of the following conditions:

          (a) Representations and Warranties. The representations and warranties of FNB
contained in this Agreement that are qualified by materiality shall be true and correct as of the
date of this Agreement and as of the Closing Date as though made on and as of the

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Closing Date and the representations and warranties of FNB contained in this Agreement that
are not so qualified shall be true and correct in all material respects as of the date of this
Agreement and as of the Closing Date as though made on and as of the Closing Date, except in each
case to the extent any such representation or warranty expressly speaks as of an earlier specified
date, in which case, as of such date, except in each case where the failure of the representations
and warranties to be so true and correct, without giving effect to any qualification as to
“material,” “materiality,” “material adverse effect” or similar qualifications, are not,
individually or in the aggregate, reasonably likely to result in a Material Adverse Effect on FNB
and CBI shall have received a certificate signed on behalf of FNB by the Chief Executive Officer or
the Chief Financial Officer of FNB to the foregoing effect.

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

          (c) Federal Tax Opinion. CBI shall have received the opinion of its special tax
counsel, Saul Ewing, LLP, in form and substance reasonably satisfactory to CBI, dated the Closing
Date, to the effect that, on the basis of facts, representations and assumptions set forth in such
opinion, the Merger will be treated as a reorganization within the meaning of Section 368(a) of the
Code. In rendering such opinion, counsel may require and rely upon representations contained in
certificates of officers of CBI and FNB, reasonably satisfactory in form and substance to it.

ARTICLE 8

TERMINATION AND AMENDMENT

     8.1 Termination. This Agreement may be terminated at any time prior to the Effective
Date, and the Merger may be abandoned:

          (a) Mutual Consent. By the mutual consent in writing of FNB and CBI if the Board of
Directors of each so determines by vote of a majority of the members of its entire Board.

          (b) Breach.

               (i) By FNB, if (A) any of the representations and warranties of CBI contained in this
Agreement shall fail to be true and correct such that the condition set forth in Section 7.2(a)
would not be satisfied or (B) CBI shall have breached or failed to comply with any of its
obligations under this Agreement such that the conditions set forth in Sections 7.1 or 7.2(b) would
not be satisfied, in either case other than as a result of a material breach by FNB of any of its
obligations under this Agreement and such failure or breach with respect to any such
representation, warranty or obligation cannot be cured, or, if curable, shall continue

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unremedied for a period of 30 days after CBI has received written notice from FNB of the
occurrence of such failure or breach, but in no event shall such 30-day period extend beyond June
30, 2011.

               (ii) By CBI, if (A) any of the representations and warranties of FNB contained in this
Agreement shall fail to be true and correct such that the condition set forth in Section 7.3(a)
would not be satisfied or (B) FNB shall have breached or failed to comply with any of its
obligations under this Agreement such that the conditions set forth in Sections 7.1 or 7.3(b) would
not be satisfied, in either case other than as a result of a material breach by CBI of any of its
obligations under this Agreement and such failure or breach with respect to any such
representation, warranty or obligation cannot be cured, or, if curable, shall continue unremedied
for a period of 30 days after FNB has received written notice from CBI of the occurrence of such
failure or breach, but in no event shall such 30-day period extend beyond June 30, 2011.

          (c) Delay. By FNB or CBI, if its Board of Directors so determines by vote of a
majority of the members of its entire Board, in the event that the Merger is not consummated on or
before 5:00 p.m., Eastern Daylight Time on June 30, 2011, except to the extent that the failure of
the Merger then to be consummated by such date shall be due to the failure of the party seeking to
terminate pursuant to this Section 8.1(c) to perform or observe the covenants and agreements of
such party set forth in this Agreement.

          (d) No Regulatory Approval. By FNB or CBI, if its Board of Directors so determines by
a vote of a majority of the members of its entire Board, in the event the approval of any
Governmental Entity required for consummation of the Merger this Agreement contemplates shall have
been denied by final nonappealable action of such Governmental Entity or an application therefor
shall have been permanently withdrawn at the request of a Governmental Entity, provided, however,
that no party shall have the right to terminate this Agreement pursuant to this Section 8.1(d) if
such denial shall be due to the failure of the party seeking to terminate this Agreement to perform
or observe the covenants of such party set forth in this Agreement.

          (e) No CBI Shareholder Approval. By FNB, or by CBI provided that CBI shall not be in
material breach of any of its obligations under Section 6.3, if any approval of the shareholders of
CBI this Agreement contemplates shall not have been obtained by reason of the failure to obtain the
required vote at the CBI Shareholder Meeting or at any adjournment or postponement thereof.

          (f) Failure to Recommend. At any time prior to the CBI Shareholder Meeting, by FNB if
(i) CBI shall have breached Section 6.3 in any respect materially adverse to FNB, (ii) the CBI
Board of Directors shall have failed to make the CBI Recommendation or shall have effected a Change
in CBI Recommendation, (iii) the CBI Board shall have recommended approval of an Acquisition
Proposal or (iv) CBI shall have materially breached

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its obligations under Section 6.3 by failing to call, give notice of, convene and hold the CBI
Shareholder Meeting.

          (g) Superior Proposal. At any time prior to the date of mailing of the Proxy
Statement, by CBI in order to enter concurrently into an Acquisition Proposal that has been
received by CBI and the CBI Board of Directors in compliance with Sections 6.11(a) and (b) and that
CBI’s Board of Directors concludes in good faith, in consultation with its financial and legal
advisors, that such Acquisition Proposal is a Superior Proposal; provided, however, that this
Agreement may be terminated by CBI pursuant to this Section 8.1(g) only after the fifth business
day following CBI’s provision of written notice to FNB advising FNB, that the CBI Board of
Directors is prepared to accept a Superior Proposal, it being agreed that the delivery of such
notice shall not entitle FNB to terminate this Agreement pursuant to this Section 8.1(g) and only
if (i) during such five-business day period, CBI has caused its financial and legal advisors to
negotiate with FNB in good faith to make such adjustments in the terms and conditions of this
Agreement such that such Acquisition Proposal would no longer constitute a Superior Proposal and
(ii) CBI’s Board of Directors has considered such adjustments in the terms and conditions of this
Agreement resulting from such negotiations and has concluded in good faith, based upon consultation
with its financial and legal advisers, that such Acquisition Proposal remains a Superior Proposal
even after giving effect to the adjustments proposed by FNB and further provided that such
termination shall not be effective until CBI has paid the Break-up Fee to FNB.

     8.2 Effect of Termination. In the event of termination of this Agreement by either
FNB or CBI as provided in Section 8.1, this Agreement shall forthwith become void and have no
effect except (i) Sections 6.1(g), 6.2(b), 6.11(f)-(h), 8.2, 8.3, 9.3 and 9.8 shall survive any
termination of this Agreement and (ii) notwithstanding anything to the contrary contained in this
Agreement, no party shall be relieved or released from any liability or damages arising out of its
willful breach of any of the provisions of this Agreement.

     8.3 Amendment. Subject to compliance with applicable law and Section 1.1(b), this
Agreement may be amended by the parties, by action taken or authorized by their respective Boards
of Directors at any time before or after approval of the matters presented in connection with
Merger by the shareholders of CBI; provided, however, that after any approval of the transactions
this Agreement contemplates by the shareholders of CBI, there may not be, without further approval
of their shareholders, any amendment of this Agreement that requires such further approval under
applicable law. This Agreement may not be amended except by an instrument in writing signed on
behalf of each of the parties.

     8.4 Extension; Waiver. At any time prior to the Effective Time, the parties, by
action taken or authorized by their respective Board of Directors, may, to the extent legally
allowed, (i) extend the time for the performance of any of the obligations or other acts of the
other party, (ii) waive any inaccuracies in the representations and warranties contained in this
Agreement and (iii) waive compliance with any of the agreements or conditions

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contained in this Agreement; provided, however, that after any approval of the transactions
this Agreement contemplates by the shareholders of CBI, there may not be, without further approval
of their shareholders, any extension or waiver of this Agreement or any portion of this Agreement
that changes the amount or form of the consideration to be delivered to the holders of CBI Common
Stock and the holders of FNB Common Stock under this Agreement, other than as this Agreement
contemplates. Any agreement on the part of a party to any such extension or waiver shall be valid
only if set forth in a written instrument signed on behalf of such party, but such extension or
waiver or failure to insist on strict compliance with an obligation, covenant, agreement or
condition shall not operate as a waiver of, or estoppel with respect to, any subsequent or other
failure.

ARTICLE 9

GENERAL PROVISIONS

     9.1 Closing. On the terms and subject to conditions set forth in this Agreement, the
closing of the Merger (the “Closing”) shall take place at 10:00 a.m. on a date and at a place to
be specified by the parties, which date shall be no later than five business days after the
satisfaction or waiver, subject to applicable law, of the latest to occur of the conditions set
forth in Article 7, other than those conditions that by their nature are to be satisfied or waived
at the Closing, unless extended by mutual written agreement of the parties (the “Closing Date”).

     9.2 Nonsurvival of Representations, Warranties and Agreements. None of the
representations, warranties, covenants and agreements set forth in this Agreement or in any
instrument delivered pursuant to this Agreement shall survive the Effective Time, except for
Articles 1, 2 and 9 and Sections 6.6, 6.7, 6.8 and 6.13.

     9.3 Expenses.

          (a) Each party to this Agreement will bear all expenses incurred by it in connection with this
Agreement and the transactions this Agreement contemplates, including fees and expenses of its own
financial consultants, accountants and counsel, except that expenses of printing the Proxy
Statement and the registration fee to be paid to the SEC in connection with the Registration
Statement shall be shared equally between CBI and FNB, and provided further that nothing contained
in this Agreement shall limit either party’s rights to recover any liabilities or damages arising
out of the other party’s willful breach of any provision of this Agreement.

          (b) In the event that this Agreement is terminated by:

               (i) FNB pursuant to Section 8.1(b)(i); or

               (ii) CBI pursuant to Section 8.1(b)(ii).

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then the non-terminating party shall pay to the terminating party by wire transfer of immediately
available funds, within two business days following delivery of a statement of such expenses, all
out-of-pocket costs and expenses, up to a maximum of $500,000, including without limitation,
professional fees of legal counsel, financial advisors and accountants, and their expenses,
actually incurred by the terminating party in connection with the Merger and this Agreement.

     9.4 Notices. All notices and other communications in connection with this Agreement
shall be in writing and shall be deemed given if delivered personally, sent via facsimile, with
confirmation, mailed by registered or certified mail, return receipt requested, or delivered by an
express courier, with confirmation, to the parties at the following addresses or at such other
address for a party as shall be specified by like notice:

          (a) if to CBI, to:

	 	 	 	Comm Bancorp, Inc.

125 North State Street

Clarks Summit, PA 18411

Attention: William F. Farber, Sr., President

Facsimile: 570-587-3761

	 	 	 	with a copy to:

	 	 	 	Saidis Sullivan Law

26 West High Street

Carlisle, PA 17013

Attention: John B. Lampi, Esq.

Facsimile: 717-243-6486

          (b) if to FNB, to:

	 	 	 	F.N.B. Corporation

One F.N.B. Boulevard

Hermitage, PA 16148

Attention: Stephen J. Gurgovits, President and Chief Executive Officer

Facsimile (724) 983-3515

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	 	 	 	with a copy to:

	 
	 	 	 	Duane Morris LLP

30 South 17th Street

Philadelphia, PA 19103

Attention: Frederick W. Dreher, Esq.

Facsimile: (215) 979-1213

     9.5 Interpretation. When a reference is made in this Agreement to Articles, Sections,
Exhibits or Schedules, such reference shall be to an Article or Section of or Exhibit or Schedule
to this Agreement unless otherwise indicated. The table of contents and headings contained in this
Agreement are for reference purposes only and shall not affect in any way the meaning or
interpretation 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.” The CBI
Disclosure Schedule and the FNB Disclosure Schedule, as well as all other schedules and all
exhibits to this Agreement, shall be deemed part of this Agreement and included in any reference to
this Agreement. This Agreement shall not be interpreted or construed to require any person to take
any action, or fail to take any action, if to do so would violate any applicable law. In this
Agreement, “knowledge” or “Knowledge” means the knowledge as of the date referenced of executive
officers of the applicable party following inquiry of persons within their organization and its
Subsidiaries who would be reasonably expected to be knowledgeable about the relevant subject
matter.

     9.6 Counterparts. This Agreement may be executed in two or more counterparts, all of
which shall be considered one and the same agreement and shall become effective when counterparts
have been signed by each of the parties and delivered to the other party, it being understood that
each party need not sign the same counterpart.

     9.7 Entire Agreement. This Agreement, including the documents and the instruments
referred to in this Agreement, together with the Confidentiality Agreements, constitutes the entire
agreement and supersedes all prior agreements and understandings, both written and oral, between
the parties with respect to the subject matter of this Agreement, other than the Confidentiality
Agreements.

     9.8 Governing Law; Jurisdiction.

          (a) This Agreement, the Merger and all claims arising hereunder or relating to this Agreement,
shall be governed and construed and enforced in accordance with the laws of the Commonwealth of
Pennsylvania, without giving effect to the principles of conflicts of law thereof.

          (b) Each of the parties to this Agreement irrevocably and unconditionally submits, for itself
and its property, to the exclusive jurisdiction of any Pennsylvania state

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court or the United States District Court for the Western District of Pennsylvania, in any
action or proceeding arising out of or relating to this Agreement. Each of the parties to this
Agreement agrees that, subject to rights with respect to post-trial motions and rights of appeal or
other avenues of review, a final judgment in any such action or proceeding shall be conclusive and
may be enforced in other jurisdictions by suit on the judgment or in any other manner provided by
law. Each of the parties to this Agreement irrevocably and unconditionally waives, to the fullest
extent it may legally and effectively do so, any objection that it may now or hereafter have to the
laying of venue of any suit, action or proceeding arising out of or relating to this Agreement in
any Pennsylvania state court or the United States District Court for the Western District of
Pennsylvania. Each of the parties to this Agreement irrevocably and unconditionally waives, to the
fullest extent it may legally and effectively do so, the defense of an inconvenient forum to the
maintenance of such action or proceeding in any such court.

          (c) EACH PARTY HERETO ACKNOWLEDGES AND AGREES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS
AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND DIFFICULT ISSUES, AND THEREFORE EACH SUCH PARTY
HEREBY IRREVOCABLY AND UNCONDITIONALLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN
RESPECT OF ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF OR RELATING TO THIS AGREEMENT, OR
THE TRANSACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY CERTIFIES AND ACKNOWLEDGES THAT (I) NO
REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT
SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, (II)
EACH PARTY UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) EACH PARTY MAKES
THIS WAIVER VOLUNTARILY AND (IV) EACH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG
OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 9.8.

     9.9 Severability. Except to the extent that application of this Section 9.9 would
have a Material Adverse Effect on CBI or FNB, any term or provision of this Agreement that is
invalid or unenforceable in any jurisdiction shall, as to that jurisdiction, be ineffective to the
extent of such invalidity or unenforceability without rendering invalid or unenforceable the
remaining terms and provisions of this Agreement or affecting the validity or enforceability of any
of the terms or provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted to be only so
broad as is enforceable. In all such cases, the parties shall use their reasonable best efforts to
substitute a valid, legal and enforceable provision that, insofar as practicable, implements the
original purposes and intents of this Agreement.

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     9.10 Assignment; Third Party Beneficiaries. Neither this Agreement nor any of the
rights, interests or obligations under this Agreement shall be assigned by either of the parties,
whether by operation of law or otherwise, without the prior written consent of the other party.
Subject to the preceding sentence, this Agreement shall be binding upon, inure to the benefit of
and be enforceable by each of the parties and their respective successors and assigns. Except as
otherwise specifically provided in Section 6.6 and 6.7, this Agreement, including the documents and
instruments referred to in this Agreement, is not intended to and does not confer upon any person
other than the parties to this Agreement any rights or remedies under this Agreement.

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     IN WITNESS WHEREOF, the duly authorized officers of F.N.B. Corporation and Comm Bancorp, Inc.
have executed this Agreement as of the date first above written.

	 	 	 	 	 
	 	F.N.B. CORPORATION

 	 
	 	By:  	/s/ Stephen J.  Gurgovits
 	 
	 	 	Stephen J.  Gurgovits, 	 
	 	 	President and Chief Executive Officer 	 
	 
	 	COMM BANCORP, INC.

 	 
	 	By:  	/s/ William F. Farber, Sr.
 	 
	 	 	William F. Farber, Sr., 	 
	 	 	Chairman of the Board, President
and

 Chief Executive Officer 	 
	 

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