Preview | Agreement and Plan of Merger |

FIRST OAK BROOK BANCSHARES, INC.

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RECITALS		1
ARTICLE I	CERTAIN DEFINITIONS	2
1.1	Certain Definitions	2
ARTICLE II	THE TRANSACTIONS	10
2.1	The Merger	10
2.2	Bank Merger	11
2.3	Effective Date	11
2.4	Reservation of Right to Revise Transactions	11
ARTICLE III	CONVERSION OF SHARES	12
3.1	Conversion of FOBB Common Stock; Merger Consideration; Dissenting Shares	12
3.2	Election Procedures	14
3.3	Delivery of Merger Consideration to Exchange Agent; Payment of Merger Consideration Relating to Certificates Surrendered at or Prior to the Election Deadline	17
3.4	Exchange and Other Procedures Relating to Certificates Surrendered after the Election Deadline	18
3.5	Return of Exchange Fund	19
3.6	Withholding	19
ARTICLE IV	ACTIONS PENDING TRANSACTION	20
4.1	Forbearances of FOBB and its Subsidiaries	20
4.2	Forbearances of MBFI and its Subsidiaries	24
ARTICLE V	REPRESENTATIONS AND WARRANTIES OF FOBB	25
5.1	Standard	25
5.2	Capitalization	25
5.3	Organization, Standing and Authority of FOBB	26
5.4	FOBB Subsidiaries	26
5.5	Authorized and Effective Agreement	27
5.6	Securities Documents and Regulatory Reports	28
5.7	Material Adverse Effect	28
5.8	Environmental Matters	28
5.9	Tax Matters	29
5.10	Legal Proceedings	30
5.11	Compliance with Laws	30
5.12	Employee Benefit Plans	31

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5.13	Certain Contracts	32
5.14	Brokers and Finders	32
5.15	Insurance	33
5.16	Properties	33
5.17	Labor	33
5.18	Allowance for Loan Losses	33
5.19	Transactions with Insiders	33
5.20	Fairness Opinion	34
5.21	No Undisclosed Liabilities	34
5.22	Indemnification	34
5.23	Loan Portfolio	34
5.24	Investment Portfolio	35
5.25	Books and Records	35
5.26	Defaults	35
5.27	Intellectual Property	35
5.28	Risk Management Instruments	35
5.29	Trust Administration	36
5.30	Internal Controls	36
5.31	Takeover Laws	36
5.32	Representations Not Misleading	36
ARTICLE VI	REPRESENTATIONS AND WARRANTIES OF MBFI	37
6.1	Standard	37
6.2	Capitalization	37
6.3	Organization, Standing and Authority of MBFI	38
6.4	MBFI Subsidiaries	38
6.5	Authorized and Effective Agreement	38
6.6	Securities Documents and Regulatory Reports	39
6.7	Material Adverse Effect	40
6.8	Environmental Matters	40
6.9	Tax Matters	40
6.10	Legal Proceedings	41
6.11	Compliance with Laws	41
6.12	Employee Benefit Plans	42
6.13	Brokers and Finders	42
6.14	Insurance	42
6.15	Properties	42
6.16	Labor	43
6.17	Allowance for Loan Losses	43
6.18	Transactions with Insiders	43
6.19	Fairness Opinion	43
6.20	No Undisclosed Liabilities	43

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6.21	Indemnification	44
6.22	Loan Portfolio	44
6.23	Investment Portfolio	44
6.24	Books and Records	44
6.25	Defaults	45
6.26	Intellectual Property	45
6.27	Risk Management Instruments	45
6.28	Trust Administration	45
6.29	Internal Controls	45
6.30	Takeover Laws	46
6.31	Representations Not Misleading	46
ARTICLE VII	COVENANTS	46
7.1	Reasonable Best Efforts	46
7.2	FOBB Shareholder Approval	46
7.3	MBFI Shareholder Approval	47
7.4	Registration Statement and Proxy Statement	47
7.5	Access; Information	48
7.6	Alternative Proposal	50
7.7	Affiliate Agreements	50
7.8	Press Releases	50
7.9	Takeover Laws	51
7.10	Conforming Entries	51
7.11	Systems Integration	52
7.12	Listing	52
7.13	Regulatory Applications	52
7.14	Current Information and Attendance at Board Meetings	53
7.15	Officers and Directors Insurance; Indemnification	54
7.16	Benefit Plans	55
7.17	FOBB Stock Options	57
7.18	DSUs and RSUs	58
7.19	Notification of Certain Matters	58
7.20	Litigation Matters	59
7.21	Section 16(b) Exemption	59
7.22	Reservation of Shares; Dividend	59
7.23	Expansion of MBFI Board and MB Bank Board	59
7.24	Best Practices, etc	60
ARTICLE VIII	CONDITIONS PRECEDENT	60
8.1	Conditions Precedent - Parties	60
8.2	Conditions Precedent - FOBB	61

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8.3	Conditions Precedent - MBFI	61
ARTICLE IX	TERMINATION, WAIVER AND AMENDMENT	62
9.1	Termination	62
9.2	Effect of Termination