IBERIABANK CORPORATION (a Louisiana corporation) 2,000,000 Depositary Shares Each Representing a 1/400th Interest in a Share Of 6.60% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C UNDERWRITING AGREEMENT

Exhibit 1.1

Execution Version

IBERIABANK CORPORATION

(a Louisiana corporation)

2,000,000 Depositary Shares

Each Representing a 1/400th Interest in a Share

Of 6.60% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C

UNDERWRITING AGREEMENT

Dated: May 3, 2016

IBERIABANK CORPORATION

(a Louisiana corporation)

2,000,000 Depositary Shares

Each Representing a 1/400th Interest in a Share

Of 6.60% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C

UNDERWRITING AGREEMENT

May 3, 2016

XXXXX, XXXXXXXX & XXXXX, INC.

XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX

INCORPORATED

as Representatives of the several Underwriters

c/o Keefe, Xxxxxxxx & Xxxxx, Inc.

000 Xxxxxxx Xxxxxx

0xx Xxxxx

Xxx Xxxx, Xxx Xxxx 00000

Ladies and Gentlemen:

IBERIABANK Corporation, a Louisiana corporation (the “Company”), confirms its agreement with Xxxxx, Xxxxxxxx & Xxxxx, Inc. (“KBW”), Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated (“ML”) and each of the other Underwriters named in Schedule A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 11 hereof), for whom KBW and ML are acting as Representatives (in such capacity, the “Representatives”), with respect to (i) the sale by the Company and the purchase by the Underwriters, acting severally and not jointly, of the respective number of depositary shares (the “Initial Depositary Shares”), each such depositary share representing ownership of a 1/400 interest in a share of the Company’s 6.60% Fixed-to-Floating Rate Non-cumulative Perpetual Preferred Stock, Series C, par value $1.00 per share, (the “Preferred Stock”) set forth in Schedule A hereto and (ii) the grant by the Company to the Underwriters, acting severally and not jointly, of the option described in Section 2(b) hereof to purchase all or any part of 300,000 additional depositary shares (the “Option Depositary Shares” and together with the Initial Depositary Shares, the “Depositary Shares”). Shares of Preferred Stock will, when issued, be deposited by the Company against delivery of depositary receipts (“Depositary Receipts”) to be issued by Computershare Trust Company, N.A. as depositary (the “Depositary”) under the Deposit Agreement, to be dated as of the Closing Time (as defined in Section 2(c)), among the Company, the Depositary and the holders from time to time of the Depositary Receipts issued thereunder (the “Deposit Agreement”). Each Depositary Receipt will evidence one or more Depositary Shares. The Preferred Stock and the Depositary Shares are herein collectively referred to as the “Securities.”

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

The Company has prepared and filed with the Securities and Exchange Commission (the “Commission”) an “automatic shelf registration statement”, as defined under Rule 405 (“Rule 405”) under the Securities Act of 1933, as amended (the “1933 Act”), on Form S-3 (File No. 333-202489) covering the public offering and sale of certain securities of the Company, including the Securities, under the 1933 Act and the rules and regulations promulgated thereunder (the “1933 Act Regulations”), which automatic shelf registration statement became effective under Rule 462(e) of the 1933 Act Regulations (“Rule 462(e)”). Such registration statement, as of any time, means such registration statement as amended by any post-effective amendments thereto at such time, including the exhibits and any schedules thereto at such time, the documents incorporated or deemed to be incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to Rule 430B of the 1933 Act Regulations (“Rule 430B”), is referred to herein as the “Registration Statement;” provided, that the “Registration Statement” without reference to a time means such registration statement as amended by any post-effective amendments thereto as of the time of the first contract of sale for the Securities, which time shall be considered the “new effective date” of the Registration Statement with respect to the Securities within the meaning of Rule 430B(f)(2), including the exhibits and schedules thereto as of such time, the documents incorporated or deemed to be incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to the Rule 430B. Each preliminary prospectus supplement and the base prospectus used in connection with the offering of the Securities, including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act immediately prior to the Applicable Time (as defined below), are collectively referred to herein as a “preliminary prospectus.” Promptly after execution and delivery of this Agreement, the Company will prepare and file a final prospectus supplement relating to the Securities in accordance with the provisions of Rule 424(b) of the 1933 Act Regulations (“Rule 424(b)”). The final prospectus supplement and the base prospectus, in the form first furnished to the Underwriters for use in connection with the offering and sale of the Securities, including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act immediately prior to the Applicable Time, are collectively referred to herein as the “Prospectus.” For purposes of this Agreement, all references to the Registration Statement, any preliminary prospectus or the Prospectus or any amendment or supplement thereto shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system (or any successor system) (“XXXXX”).

As used in this Agreement:

“Applicable Time” means 3:30 p.m., New York City time, on May 3, 2016 or such other time as agreed by the Company and the Representatives.

“General Disclosure Package” means each Issuer General Use Free Writing Prospectus and the most recent preliminary prospectus furnished to the Underwriters for general distribution to investors prior to the Applicable Time, all considered together.

“Issuer Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 of the 1933 Act Regulations (“Rule 433”), including, without limitation, any “free writing prospectus” (as defined in Rule 405) relating to the Securities that is (i) required to be filed with the Commission by the Company, (ii) a “road show that is a written communication” within the meaning of Rule 433(d)(8)(i), whether or not required to be filed with the Commission, or (iii) exempt from filing with the Commission pursuant to Rule 433(d)(5)(i) because it contains a description of the Securities or of the offering thereof that does not reflect the final terms, in each case in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g).

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

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

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

SECTION 1. Representations and Warranties.

(a) Representations and Warranties by the Company. The Company represents and warrants to each Underwriter at the date hereof, the Applicable Time, the Closing Time (as defined below) and any Date of Delivery (as defined below), and agrees with each Underwriter, as follows:

(i) Compliance of the Registration Statement, the Prospectus and Incorporated Documents. The Company meets the requirements for use of Form S-3 under the 1933 Act. The Registration Statement is an automatic shelf registration statement under Rule 405 and the Securities were registered by the Company on such automatic shelf registration statement. Each of the Registration Statement and any post-effective amendment thereto has become effective under the 1933 Act. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no notice of objection of the Commission to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) of the 1933 Act Regulations (“Rule 401(g)(2)”) has been received by the Company, no order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the Company’s knowledge, contemplated. The Company has complied with each request (if any) from the Commission for additional information.

Each of the Registration Statement and any post-effective amendment thereto, at the time of its effectiveness and as of each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2), complied in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations. Each preliminary prospectus and the Prospectus and any amendment or supplement thereto, at the time each was filed with the Commission, complied in all material respects with the requirements of the 1933 Act and the 1933 Act Regulations and are identical to the electronically transmitted copies thereof filed with the Commission pursuant to XXXXX, except to the extent permitted by Regulation S-T.

The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, when they became effective or at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the requirements of the 1934 Act and the 1934 Act Regulations.

(ii) Accurate Disclosure. Neither the Registration Statement nor any amendment thereto, at its effective time, at the Closing Time or at any Date of Delivery, contained, contains or will contain an untrue statement of a material fact or omitted, omits or will omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. At the Applicable Time, neither (A) the General Disclosure Package nor (B) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. Neither the Prospectus nor any amendment or supplement thereto, as of its issue date, at the Closing Time or at any Date of Delivery, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, at the time the Registration Statement became effective or when such incorporated documents were filed with the Commission, as the case may be, when read together with the other information in the Registration Statement, the General Disclosure Package or the Prospectus, as the case may be, did not, does not and will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement or any amendment thereto or the General Disclosure Package or the Prospectus or any amendment or supplement thereto made in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives expressly for use therein. For purposes of this Agreement, the only information so furnished shall be the information in the third paragraph, the fourth sentence of the eighth paragraph, the ninth paragraph and the eleventh paragraph, each under the heading “Underwriting,” in each case, contained in the Registration Statement, the preliminary prospectus contained in the General Disclosure Package and the Prospectus (collectively, the “Underwriter Information”).

(iii) Issuer Free Writing Prospectuses. No Issuer Free Writing Prospectus conflicts or will conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus, including any document incorporated by reference therein, that has not been superseded or modified. Any offer that is a written communication relating to the Securities made prior to the initial filing of the Registration Statement by the Company or any person acting on its behalf (within the meaning, for this paragraph only, of paragraph (c) of Rule 163 of the 1933 Act Regulations (“Rule 163”)) has been filed with the Commission in accordance with the exemption provided by Rule 163 and otherwise complied with the requirements of Rule 163, including, without limitation, the legending requirement, to qualify such offer for the exemption from Section 5(c) of the 1933 Act provided by Rule 163.

(iv) Well-Known Seasoned Issuer. (A) At the original effectiveness of the Registration Statement, (B) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the 1933 Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the 1934 Act or form of prospectus), (C) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c)) made any offer relating to the Securities in reliance on the exemption of Rule 163 and (D) at the Applicable Time, the Company was and is a “well-known seasoned issuer”, as defined in Rule 405.

(v) Company Not Ineligible Issuer. (A) At the time of filing the Registration Statement and any post-effective amendment thereto, (B) at the earliest time thereafter that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Securities and (C) at the Applicable Time, the Company was not and is not an “ineligible issuer,” as defined in Rule 405.

(vi) Independent Accountants. The accountants who certified the financial statements and supporting schedules, included in the Registration Statement, the General Disclosure Package and the Prospectus, of the Company are (A) independent public accountants as required by the 1933 Act, the 1933 Act Regulations, the 1934 Act, the 1934 Act Regulations and the Public Accounting Oversight Board and (B) a registered public accounting firm as defined by the PCAOB whose registration has not been superseded or revoked and who has not requested such registration to be withdrawn.

(vii) Financial Statements; Non-GAAP Financial Measures. The financial statements of the Company included in the Registration Statement, the General Disclosure Package and the Prospectus, together with the related schedules and notes, comply in all material respects with the requirements of the 1933 Act and present fairly in all material respects the financial position of the Company and its consolidated Subsidiaries (as defined below) at the dates indicated and the statement of operations, stockholders’ equity and cash flows of the Company and its consolidated Subsidiaries for the periods specified; said financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods involved. The supporting schedules, if any, present fairly in all material respects in accordance with GAAP the information required to be stated therein. The selected financial data and the summary financial information included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in all material respects the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included therein. Except as included therein, no historical or pro forma financial statements or supporting schedules are required to be included in the Registration Statement, any preliminary prospectus or the Prospectus under the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations. To the extent applicable, all disclosures contained in the Registration Statement, the General Disclosure Package or the Prospectus, if any, regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply in all material respects with Regulation G under the 1934 Act and Item 10 of Regulation S-K under the 1933 Act. The interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus is updated as necessary to comply in all material respects with the requirements of the 1933 Act and the Commission’s rules and guidelines applicable thereto and present fairly the consolidated financial position, results of operations and changes in financial position of the Company and its subsidiaries (the “Subsidiaries”) on the basis stated in the Registration Statement at the respective dates or for the respective periods to which they apply.

(viii) No Material Adverse Change in Business. Since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package and the Prospectus, except as otherwise stated therein, (A) there has been no material adverse change in the condition, financial or otherwise, or in the earnings or business affairs of the Company and its Subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business (a “Material Adverse Change”), (B) there have been no transactions entered into by the Company

or any of its Subsidiaries, other than those in the ordinary course of business, which are material with respect to the Company and its Subsidiaries considered as one enterprise, and (C) there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock.

(ix) Good Standing of the Company. The Company has been duly organized and is validly existing as a corporation in good standing under the laws of the State of Louisiana and has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and to enter into and perform its obligations under this Agreement; and the Company is duly qualified as a foreign corporation to transact business and is in good standing in each other jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure to so qualify or to be in good standing would not result in a material adverse effect (A) in the condition, financial or otherwise, or in the earnings or business affairs of the Company and its Subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business or (B) in the ability of the Company to perform its obligations under, and to consummate the transactions contemplated by, this Agreement, the Deposit Agreement and the Securities (each of (A) and (B), a “Material Adverse Effect”).

(x) Good Standing of Subsidiaries. IBERIABANK is a bank chartered under the laws of the State of Louisiana to transact business as a state-chartered bank and the charter of IBERIABANK is in full force and effect. IBERIABANK is the only “significant subsidiary” of the Company (as such term is defined in Rule 1-02 of Regulation S-X). Each Subsidiary has been duly organized and is validly existing as a corporation or other organization in good standing under the laws of the jurisdiction of its incorporation, has corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and is duly qualified as a foreign corporation to transact business and is in good standing in each jurisdiction in which such qualification is required, whether by reason of the ownership or leasing of property or the conduct of business, except where the failure so to qualify or to be in good standing would not result in a Material Adverse Effect. Except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, all of the issued and outstanding capital stock of each such Subsidiary has been duly authorized and validly issued, is fully paid and non-assessable and is owned by the Company, directly or through Subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity; none of the outstanding shares of capital stock of any Subsidiary was issued in violation of the preemptive or similar rights of any securityholder of such Subsidiary arising by operation of law, or under the articles of incorporation, bylaws or other organizational documents of the Company or any Subsidiary or under any agreement to which the Company or any Subsidiary is a party. The only Subsidiaries of the Company are the Subsidiaries listed on Schedule D hereto.

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

arising by operation of law, or under the articles of incorporation, bylaws or other organizational documents of the Company or any Subsidiary or under any agreement to which the Company or any Subsidiary is a party.

(xii) Authorization of Agreement. This Agreement has been duly authorized, executed and delivered by the Company.

(xiii) Authorization and Description of Securities. The shares of Preferred Stock to be purchased by the Underwriters from the Company have been duly authorized for issuance and sale to the Underwriters pursuant to this Agreement and, when issued and delivered by the Company pursuant to this Agreement against payment of the consideration set forth herein, will be validly issued and fully paid and non-assessable, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity, and will not have been issued in violation of or subject to any preemptive or similar right. Prior to the Closing Time, the Articles of Amendment for the Preferred Stock will have been duly filed with the Secretary of State of the State of Louisiana. The Preferred Stock shall be uncertificated, which complies with the requirements of Louisiana Business Corporation Act, the Company’s Articles of Incorporation, as amended by the Articles of Amendments with respect to the Preferred Stock (collectively, the “Charter”), the Company’s By-Laws (“By-Laws”) and the rules of the NASDAQ Global Select Market. The Securities conform to all statements relating thereto contained in the Registration Statement, the General Disclosure Package and the Prospectus and such statements conform to the rights set forth in the instruments defining the same.

(xiv) Depositary Shares. The Depositary Shares being delivered to the Underwriters at the Closing Time have been duly authorized.

(xv) Authorization and Description of Deposit Agreement. The Deposit Agreement has been duly authorized by the Company and, at the Closing Time, assuming the Deposit Agreement is the valid and legally binding obligation of the Depositary, will constitute a valid and legally binding agreement of the Company enforceable against the Company in accordance with its terms, except as such enforceability may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting creditors’ rights generally and by general equitable principles. The Deposit Agreement conforms in all material respects to all statements relating thereto contained in the Registration Statement, the General Disclosure Package and Prospectus.

The deposit of the Preferred Stock in respect of the Depositary Shares by the Company in accordance with the Deposit Agreement has been duly authorized and, assuming the Deposit Agreement is the valid and legally binding obligation of the Depositary, upon due issuance by the Depositary of the Depositary Receipts evidencing the Depositary Shares against the deposit of Preferred Stock in accordance with the provisions of the Deposit Agreement and payment therefor in accordance with this Agreement, the Depositary Receipts will be duly and validly issued and will entitle the persons in whose names the Depositary Receipts are registered to the rights specified therein and in the Deposit Agreement, except as such enforceability may be limited by bankruptcy, insolvency, reorganization, moratorium or other similar laws relating to or affecting creditors’ rights generally and by general equitable principles.

(xvi) Registration Rights. There are no persons with registration rights or other similar rights to have any securities registered for sale pursuant to the Registration Statement or otherwise registered for sale or sold by the Company under the 1933 Act pursuant to this Agreement other than any rights that have been disclosed in the Registration Statement, the General Disclosure Package and the Prospectus and have been waived.

(xvii) Absence of Defaults and Conflicts. The Company is not in violation of its Charter or By-laws; none of the Subsidiaries is in violation of its charter or bylaws and neither the Company nor any of its Subsidiaries is in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of its Subsidiaries is a party or by which it or any of them may be bound, or to which any of the property or assets of the Company or any Subsidiary is subject (collectively, “Agreements and Instruments”) except for such violations or defaults that would not, singly or in the aggregate, result in a Material Adverse Effect; and the execution, delivery and performance of this Agreement and the Deposit Agreement and the consummation of the transactions contemplated herein and therein, and in the Registration Statement (including the issuance and sale of the Securities and the use of the proceeds from the sale of the Securities as described in the Prospectus under the caption “Use of Proceeds”) and compliance by the Company with its obligations hereunder and under the Deposit Agreement have been duly authorized by all necessary corporate action and do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Company or any Subsidiary pursuant to, the Agreements and Instruments (except for such conflicts, breaches or defaults or liens, charges or encumbrances that would not result, singly or in the aggregate, in a Material Adverse Effect); nor will such action result in any violation of the provisions of the Charter or By-laws of the Company or any Subsidiary; nor will such action result in any violation of any applicable law, statute, rule, regulation, judgment, order, writ or decree of any government, government instrumentality or court, domestic or foreign, having jurisdiction over the Company or any Subsidiary or any of their assets, properties or operations (except for such violations that would not result, singly or in the aggregate, in a Material Adverse Effect). As used herein, a “Repayment Event” means any event or condition which gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any Subsidiary.

(xviii) Absence of Labor Dispute. No labor dispute with the employees of the Company or any Subsidiary exists or, to the knowledge of the Company, is imminent, and the Company is not aware of any existing or imminent labor disturbance by the employees of any of its or any Subsidiary’s principal suppliers, manufacturers, customers or contractors, which, in either case, would result, singly or in the aggregate, in a Material Adverse Effect.

(xix) Absence of Proceedings. There is no action, suit, proceeding, inquiry or investigation before or brought by any court or governmental agency or body, domestic or foreign, now pending, or, to the knowledge of the Company, threatened, against or affecting the Company or any Subsidiary, which is required to be disclosed in the Registration Statement (other than as disclosed therein), or which would result in a Material Adverse Effect, or which would result in materially and adversely affecting the properties or assets thereof; the aggregate of all pending legal or governmental proceedings to which the Company or any Subsidiary is a party or of which any of their respective property or assets is the subject which are not described in the Registration Statement, including ordinary routine litigation incidental to the business, would not result in a Material Adverse Effect.

(xx) Bank Holding Company Act. The Company has been duly registered as a bank holding company and has elected to be treated as a financial holding company under the applicable provisions of the Bank Holding Company Act of 1956, as amended. Each of the Company and IBERIABANK is in compliance in all material respects with all applicable laws administered by and regulations of the Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation (the “FDIC”), and the Louisiana Office of Financial Institutions, as applicable (collectively, the “Bank Regulatory Authorities”), the Equal Credit Opportunity Act, the Fair Housing Act, the Community Reinvestment Act, the Home Mortgage Disclosure Act, the Bank Secrecy Act, to the extent such laws or regulations apply to the Company or IBERIABANK, as applicable, other than where such failures to comply would not have a Material Adverse Effect. Except as disclosed in the Registration Statement, the General Disclosure Package, and the Prospectus, or except as would not otherwise result in a Material Adverse Effect, neither the Company nor IBERIABANK is a party to any written agreement or memorandum of understanding with, or a party to, any commitment letter or similar undertaking to, or is subject to any order or directive by, or is a recipient of an extraordinary supervisory letter from, or has adopted any board resolutions at the request of, any Bank Regulatory Authority which restricts materially the conduct of its business, or in any manner relates to its capital adequacy, its credit policies or its management, nor have any of them been advised by any Bank Regulatory Authority that it is contemplating issuing or requesting (or is considering the appropriateness of issuing or requesting) any such order, decree, agreement, memorandum of understanding, extraordinary supervisory letter, commitment letter or similar submission, or any such board resolutions. As of Xxxxx 00, 0000, XXXXXXXXXX met or exceeded the standards necessary to be considered “well capitalized” under the FDIC’s regulatory framework for prompt corrective action.

(xxi) Accuracy of Exhibits. There are no contracts or documents which are required to be described in the Registration Statement, or the General Disclosure Package, the Prospectus or the documents incorporated by reference therein or to be filed as exhibits thereto which have not been so described and filed as required.

(xxii) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any Governmental Entity is necessary or required for the performance by the Company of its obligations under this Agreement, in connection with the offering, issuance or sale of the Securities or the consummation of the transactions contemplated in this Agreement and the Deposit Agreement, except the filing of the Articles of Amendment for the Securities with the Secretary of State of the State of Louisiana prior to the Closing Time or such as have been already obtained or as may be required under the 1933 Act, the 1933 Act Regulations, the rules of the NASDAQ Global Select Market, the securities laws of any state or non-U.S. jurisdiction or the rules of Financial Industry Regulatory Authority, Inc. (“FINRA”).

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

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

(xxiv) Title to Property. The Company and its Subsidiaries have good and marketable title to all real property owned by the Company and its Subsidiaries and good title to all other properties owned by them, in each case, free and clear of all mortgages, pledges, liens, security interests, claims, restrictions or encumbrances of any kind except such as (A) are described in the Registration Statement, the General Disclosure Package and the Prospectus or (B) would not, singly or in the aggregate, have a Material Adverse Effect and all of the leases and subleases under which the Company or any of its Subsidiaries holds properties described in the Registration Statement, the General Disclosure Package and the Prospectus, are in full force and effect, except as would not, singly or in the aggregate, have a Material Adverse Effect, and neither the Company nor any Subsidiary has any notice of any material claim of any sort that has been asserted by anyone adverse to the rights of the Company or any Subsidiary under any of the leases or subleases mentioned above, or affecting or questioning the rights of the Company or such Subsidiary to the continued possession of the leased or subleased premises under any such lease or sublease, except as would not, singly or in the aggregate, have a Material Adverse Effect.

(xxv) Possession of Intellectual Property. The Company and its Subsidiaries own or possess, or can acquire on reasonable terms, adequate patents, patent rights, licenses, inventions, copyrights, know-how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures and excluding generally commercially available “off the shelf” software programs licensed pursuant to shrink wrap or “click and accept” licenses), trademarks, service marks, trade names or other intellectual property (collectively, “Intellectual Property”) necessary to carry on the business now operated by them, except as would not, singly or in the aggregate, have a Material Adverse Effect, and neither the Company nor any of its Subsidiaries has received any notice or is otherwise aware of any infringement of or conflict with asserted rights of others with respect to any Intellectual Property or of any facts or circumstances which would render any Intellectual Property invalid or inadequate to protect the interest of the Company or any of its Subsidiaries therein, except for any infringement or conflict or invalidity or inadequacy, singly or in the aggregate, would not result in a Material Adverse Effect.

(xxvi) Environmental Laws. Except as described in the Registration Statement and except as would not, singly or in the aggregate, result in a Material Adverse Effect, (A) neither the Company nor any of its Subsidiaries is in violation of any federal, state, local or foreign statute, law, rule, regulation, ordinance, code, policy or rule of common law or any judicial or administrative interpretation thereof, including any judicial or administrative order, consent, decree or judgment, relating to pollution or protection of human health, the environment (including, without limitation, ambient air, surface water, groundwater, land surface or subsurface strata) or wildlife, including, without limitation, laws and regulations relating to the release or threatened release of chemicals, pollutants, contaminants, wastes, toxic substances, hazardous substances, petroleum or petroleum products, asbestos-containing materials or mold (collectively, “Hazardous Materials”) or to the manufacture, processing, distribution, use, treatment, storage, disposal, transport or handling of Hazardous Materials (collectively, “Environmental Laws”), (B) the Company and its Subsidiaries have all permits, authorizations and approvals required under any applicable Environmental Laws and are each in compliance with their requirements, (C) there are

no pending or threatened administrative, regulatory or judicial actions, suits, demands, demand letters, claims, liens, notices of noncompliance or violation, investigation or proceedings relating to any Environmental Law against the Company or any of its Subsidiaries and (D) there are no events or circumstances that would result in forming the basis of an order for clean-up or remediation, or an action, suit or proceeding by any private party or governmental body or agency, against or affecting the Company or any of its Subsidiaries relating to Hazardous Materials or any Environmental Laws.

(xxvii) Internal Control Over Financial Reporting. The Company and each of its Subsidiaries maintains a system of internal accounting controls sufficient to provide reasonable assurance that (A) transactions are executed in accordance with management’s general or specific authorizations; (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain asset accountability; (C) access to assets is permitted only in accordance with management’s general or specific authorization; and (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences. Except as described in the Registration Statement, the General Disclosure Package and Prospectus, since the end of the Company’s most recent audited fiscal year, there has been (I) no material weakness in the Company’s internal control over financial reporting (whether or not remediated) and (II) no change in the Company’s internal control over financial reporting that has materially affected, or would result in materially affecting, the Company’s internal control over financial reporting.

(xxviii) Disclosure Controls and Procedures. The Company and its Subsidiaries employ disclosure controls and procedures (as such term is defined in Rule 13a-15 under the 1934 Act), which (A) are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the 1934 Act is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms and that material information relating to the Company and its Subsidiaries is made known to the Company’s principal executive officer and principal financial officer by others within the Company and its Subsidiaries to allow timely decisions regarding disclosure, (B) have been evaluated by management of the Company for effectiveness as of the end of the Company’s most recent fiscal quarter, and (C) were then effective in all material respects to perform the functions for which they were established. Based on the evaluation of the Company’s and each Subsidiary’s disclosure controls and procedures described above, the Company is not aware of (1) any significant deficiency in the design or operation of internal controls which could adversely affect the Company’s or its Subsidiaries’ ability to record, process, summarize and report financial data or any material weaknesses in internal controls or (2) any fraud, whether or not material, that involves management or other employees who have a significant role in the Company’s or its Subsidiaries’ internal controls. Since the most recent evaluation of the Company’s disclosure controls and procedures described above, there have been no changes in internal controls or in other factors that could significantly affect internal controls.

(xxix) Compliance with the Xxxxxxxx-Xxxxx Act. There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply in all material respects with any provision of the Xxxxxxxx-Xxxxx Act of 2002 and the rules and regulations promulgated in connection therewith, including Section 402 related to loans and Sections 302 and 906 related to certifications.

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

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

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

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

(xxxiv) Absence of Manipulation. Neither the Company nor any of its Subsidiaries, nor any affiliates of the Company or its Subsidiaries, has taken, directly or indirectly, any action designed to cause or result in any unlawful stabilization or manipulation of the price of the Securities.

(xxxv) Foreign Corrupt Practices Act. None of the Company, any of its Subsidiaries or, to the best knowledge of the Company, any director, officer, agent or employee of the Company or any of its Subsidiaries has (A) used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity; (B) made any direct or indirect unlawful payment to any foreign or domestic government official or employee from corporate funds; (C) violated or is in violation of any provision of the Foreign Corrupt Practices Act of 1977, as amended or any applicable non-U.S. anti-bribery statute or regulation; or (D) made any bribe, rebate, payoff, influence payment, kickback or other unlawful payment.

(xxxvi) Anti-Money Laundering Laws. The operations of the Company and its Subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the money laundering statutes of all applicable jurisdictions and the rules and regulations thereunder issued, administered or enforced by any Governmental Entity (collectively, the “Anti-Money Laundering Laws”); and no action, suit or proceeding by or before any Governmental Entity involving the Company or any of its Subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the best knowledge of the Company, threatened.

(xxxvii) OFAC. None of the Company, any of its Subsidiaries or, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of its Subsidiaries is currently the subject of any sanctions administered or enforced by the U.S. Department of the Treasury’s Office of Foreign Assets Control (“OFAC”), the United Nations Security Council (“UNSC”), the European Union, Her Majesty’s Treasury (“HMT”), or other relevant sanctions authority (collectively, Sanctions”); and the Company will not directly or indirectly use the proceeds of the sale of the Securities, or lend, contribute or otherwise make available such proceeds to any Subsidiary, joint venture partner or other individual or entity (“Person”) for the purpose of funding the activities or business of or with any Person, or in any country or territory, that, at the time of such funding, is the subject of Sanctions or in any other manner that will result in a violation by any Person (including any Person participating in the transaction, whether as underwriter, advisor, investor or otherwise) of Sanctions.

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

(xxxix) Statistical and Market-Related Data. The statistical and market related data contained in the Prospectus and Registration Statement are based on or derived from sources which the Company believes are reliable and accurate.

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

(xli) Forward-Looking Statements. No forward-looking statement (within the meaning of Section 27A of the 1933 Act and Section 21E of the 0000 Xxx) contained in the Registration Statement and the Prospectus has been made or reaffirmed without a reasonable basis or has been disclosed other than in good faith.

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

(xliii) Deposit Insurance. The deposit accounts of IBERIABANK are insured by the FDIC up to applicable legal limits, IBERIABANK has paid all premiums and assessments required by the FDIC and the regulations thereunder, and no proceeding for the termination or revocation of such insurance is pending or, to the knowledge of the Company, threatened.

(b) Officer’s Certificates. Any certificate signed by any officer of the Company or any of its Subsidiaries delivered to the Representatives or to counsel for the Underwriters shall be deemed a representation and warranty by the Company to each Underwriter as to the matters covered thereby.

SECTION 2. Sale and Delivery to Underwriters; Closing.

(a) Initial Depositary Shares. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to each Underwriter, severally and not jointly, and each Underwriter, severally and not jointly, agrees to purchase from the Company, at the price per share set forth in Schedule A, the number of Initial Depositary Shares set forth in Schedule A opposite the name of such Underwriter, plus any additional number of Initial Depositary Shares which such Underwriter may become obligated to purchase pursuant to the provisions of Section 11 hereof, subject, in each case, to such adjustments among the Underwriters as the Representatives in their sole discretion shall make to eliminate any sales or purchases of fractional shares.

(b) Option Depositary Shares. In addition, on the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company grant(s) an option to the Underwriters, severally and not jointly, to purchase up to an additional 300,000 depositary shares solely for the purpose of covering any over-allotments, if any, at the price per share set forth in Schedule A plus accrued dividends from the Closing Time; provided, that the purchase price per Optional Depositary Share shall be reduced by an amount per share equal to any dividends or distributions declared by the Company and payable on the Initial Depositary Shares but not payable on the Optional Depositary Shares. The option hereby granted may be exercised for 30 days after the date hereof and may be exercised in whole or in part at any time from time to time upon notice by the Representatives to the Company setting forth the number of Option Depositary Shares as to which the several Underwriters are then exercising the option and the time and date of payment and delivery for such Option Depositary Shares. Any such time and date of delivery (a “Date of Delivery”) shall be determined by the Representatives, but shall not be earlier than two full business days or later than seven full business days after the exercise of said option, nor in any event prior to the Closing Time. If the option is exercised as to all or any portion of the Option Depositary Shares, each of the Underwriters, acting severally and not jointly, will purchase that proportion of the total number of Option Depositary Shares then being purchased which the number of Initial Depositary Shares set forth in Schedule A opposite the name of such Underwriter bears to the total number of Initial Depositary Shares, subject, in each case, to such adjustments as the Representatives in their sole discretion shall make to eliminate any sales or purchases of fractional shares.

(c) Payment. Payment of the purchase price for, and delivery of certificates for, the Initial Depositary Shares shall be made at the offices of Xxxxxxxxx & Xxxxxxx LLP, One CityCenter, 000 Xxxxx Xxxxxx, XX, Xxxxxxxxxx, XX 00000, or at such other place as shall be agreed upon by the Representatives and the Company, at 9:00 A.M. (New York City time) on May 9, 2016 (unless postponed in accordance with the provisions of Section 11), or such other time not later than ten business days after such date as shall be agreed upon by the Representatives and the Company (such time and date of payment and delivery being herein called “Closing Time”).

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

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

SECTION 3. Covenants of the Company. The Company covenants with each Underwriter as follows:

(a) Compliance with Commission Requests. Until the last Date of Delivery, the Company, subject to Section 3(b), hereof will comply with the requirements of Rule 430B, and will notify the Representatives immediately, and confirm the notice in writing, (i) when any post-effective amendment to the Registration Statement or any new registration statement relating to the Securities shall become effective or any amendment or supplement to the General Disclosure Package or the Prospectus shall have been used or filed, as the case may be, including any document incorporated by reference therein, in each case only as permitted by Section 3 hereof, (ii) of the receipt of any comments from the Commission, (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or supplement to the General Disclosure Package or the Prospectus, including any document incorporated by reference therein, or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto or any notice of objection to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) or of the issuance of any order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto, or of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any examination pursuant to Section 8(d) or 8(e) of the 1933 Act concerning the Registration Statement and (v) if the Company becomes the subject of a proceeding under Section 8A of the 1933 Act in connection with the offering of the Securities. The Company will effect all filings required under Rule 424(b), in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)), and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus. Until the last Date of Delivery, the Company will make every reasonable effort to prevent the issuance of any stop, prevention or suspension order and, if any such order is issued, to obtain the lifting thereof at the earliest possible moment. The Company shall pay the required Commission filing fees relating to the Securities within the time required by Rule 456(b)(1)(i) of the 1933 Act Regulations without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) of the 1933 Act Regulations (including, if applicable, by updating the “Calculation of Registration Fee” table in accordance with Rule 456(b)(1)(ii) either in a post-effective amendment to the Registration Statement or on the cover page of a prospectus filed pursuant to Rule 424(b)).

(b) Continued Compliance with Securities Laws. The Company will comply with the 1933 Act, the 1933 Act Regulations, the 1934 Act and the 1934 Act Regulations so as to permit the completion of the distribution of the Securities as contemplated in this Agreement and in the Registration Statement, the General Disclosure Package and the Prospectus. If at any time when a prospectus relating to the Securities is (or, but for the exception afforded by Rule 172 of the 1933 Act Regulations (“Rule 172”), would be) required by the 1933 Act to be delivered in connection with sales of the Securities ending no later than nine months from the date hereof (the “Delivery Period”) any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriters or for the Company, to (i) amend the Registration Statement in order that the Registration Statement will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) amend or supplement the General Disclosure Package or the Prospectus in order that the General Disclosure Package or the Prospectus, as the case may be, will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in the light of the circumstances existing at the time it is delivered to a purchaser or (iii)

amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus, as the case may be, including, without limitation, any document incorporated therein by reference, in order to comply with the requirements of the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations, the Company will promptly (A) give the Representatives written notice of such event or condition, (B) prepare any amendment or supplement as may be necessary to correct such statement or omission or to make the Registration Statement, the General Disclosure Package or the Prospectus comply with such requirements and, a reasonable amount of time prior to any proposed filing or use, furnish the Representatives with copies of any such amendment or supplement and (C) file with the Commission any such amendment or supplement and use its best efforts to have any amendment to the Registration Statement declared effective by the Commission as soon as possible if the Company is no longer eligible to file an automatic shelf registration statement, provided that the Company shall not file or use any such amendment or supplement to which the Representatives or counsel for the Underwriters shall object.

(c) Filing or Use of Amendments or Supplements. The Company has given the Representatives written notice of any filings made pursuant to the 1934 Act or 1934 Act Regulations within 48 hours prior to the Applicable Time and will give the Representatives written notice of its intention to file or use any amendment to the Registration Statement or any amendment or supplement to the General Disclosure Package or the Prospectus, whether pursuant to the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations or otherwise, from the Applicable Time to the later of (i) the end of the Delivery Period and (ii) the last Date of Delivery, and will furnish the Representatives with copies of any such amendment or supplement a reasonable amount of time prior to such proposed filing or use, as the case may be, and will not file or use any such amendment or supplement to which the Representatives or counsel for the Underwriters shall reasonably object.

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

(e) Delivery of Prospectuses. The Company has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus as such Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the 1933 Act. The Company will furnish to each Underwriter, without charge, during the period when a prospectus relating to the Securities is (or, but for the exception afforded by Rule 172, would be) required by the 1933 Act to be delivered in connection with sales of the Securities, such number of copies of the Prospectus (as amended or supplemented) as such Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to XXXXX, except to the extent permitted by Regulation S-T.

(f) Blue Sky Qualifications. The Company will use its best efforts, in cooperation with the Underwriters, to qualify the Securities for offering and sale under the applicable securities laws of such states and non-U.S. jurisdictions as the Representatives may designate and to maintain such qualifications in effect during the Delivery Period; provided, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject.

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

(h) Use of Proceeds. The Company will use the net proceeds received by it from the sale of the Securities in the manner specified in the Registration Statement, the preliminary prospectus contained in the General Disclosure Package and the Prospectus under “Use of Proceeds.”

(i) Listing. The Company will use its best efforts to effect the listing of the Securities on the NASDAQ Global Select Market within 30 days after the Closing Time.

(j) Restriction on Sale of Securities. During a period of 30 days from the date of this Agreement, the Company will not, without the prior written consent of the Representatives, (i) directly or indirectly, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, or lend or otherwise transfer or dispose of, the Securities or any securities that are substantially similar to the Securities, whether owned as of the date hereof or hereafter acquired or with respect to which such person has or hereafter acquires the power of disposition, or file, or cause to be filed, any registration statement under the 1933 Act with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Securities or such other securities, whether any such swap or transaction described in clause (i) or (ii) above is to be settled by delivery of any Securities or such other securities, in cash or otherwise. The foregoing sentence shall not apply to the Securities to be sold hereunder.

(k) Reporting Requirements. The Company, during the Delivery Period, will file all documents required to be filed with the Commission pursuant to the 1934 Act within the time periods required by, and each such document will meet the requirements of, the 1934 Act and 1934 Act Regulations.

(l) Final Term Sheet. The Company will prepare a final term sheet (the “Final Term Sheet”) containing the final terms of the Securities and their offering, in a form approved by the Underwriters and attached as Schedule C hereto, and acknowledges that the Final Term Sheet is an Issuer Free Writing Prospectus and will comply with its related obligations set forth in Section 3(m) hereof. The Company will furnish to each Underwriter, without charge, copies of the Final Term Sheet promptly upon its completion.

(m) Issuer Free Writing Prospectuses. The Company agrees that, unless it obtains the prior written consent of the Representatives, it will not make any offer relating to the Securities that would constitute an Issuer Free Writing Prospectus or that would otherwise constitute a “free writing prospectus,” or a portion thereof, required to be filed by the Company with the Commission or retained by the Company under Rule 433; provided, that the Representatives will be deemed to have consented to the Issuer General Use Free Writing Prospectuses listed on Schedule B hereto and any “road show that is a written communication” within the meaning of Rule 433(d)(8)(i) that has been reviewed by the Representatives. The Company represents that it has treated or agrees that it will treat each such free writing prospectus consented to, or deemed consented to, by the Representatives as an Issuer Free Writing Prospectus and that it has complied and will comply with the applicable requirements of Rule 433 with respect thereto, including timely filing with the Commission where required, legending and record keeping. If at any time following issuance of an Issuer Free Writing Prospectus during the Delivery Period there occurred or

occurs an event or condition as a result of which such Issuer Free Writing Prospectus included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing at that subsequent time, not misleading, the Company will promptly notify the Representatives in writing and will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus to correct such untrue statement or omission.

(n) Removal Deadline. If, immediately prior to the third anniversary of the initial effective date of the Registration Statement (the “Renewal Deadline”), any Securities remain unsold by the Underwriters, the Company will, prior to the Renewal Deadline, (i) promptly notify the Representatives in writing and (ii) promptly file, if it is eligible to do so, a new automatic shelf registration statement relating to the Securities, in a form and substance satisfactory to the Underwriters. If, at the Renewal Deadline, the Company is not eligible to file an automatic shelf registration statement, the Company will, prior to the Renewal Deadline, (i) promptly notify the Representatives in writing, (ii) promptly file a new shelf registration statement or post-effective amendment on the proper form relating to such Securities, in a form and substance satisfactory to the Underwriters, (iii) use its best efforts to cause such registration statement or post-effective amendment to be declared effective within 60 days after the Renewal Deadline and (iv) promptly notify the Representatives in writing of such effectiveness. The Company will take all other action necessary or appropriate to permit the offering and sale of the Securities to continue as contemplated in the expired Registration Statement. References herein to the “Registration Statement” shall include such new automatic shelf registration statement or such new shelf registration statement or post-effective amendment, as the case may be.

(o) Filing of Articles of Amendment. The Company will use its best efforts to file, prior to the Closing Time, the Articles of Amendment for the Preferred Stock with the Secretary of State of the State of Louisiana.

(p) DTC. The Company will cooperate with the Underwriters and use its best efforts to permit the Securities to be eligible for clearance, settlement and trading through the facilities of The Depository Trust Company (“DTC”).

SECTION 4. Payment of Expenses.

(a) Expenses. The Company will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and each amendment thereto, (ii) the preparation, printing and delivery to the Underwriters of copies of each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus and any amendments or supplements thereto and any costs associated with electronic delivery of any of the foregoing by the Underwriters to investors, (iii) the preparation and filing of the Articles of Amendment for the Securities with the Secretary of State of the State of Louisiana and the preparation, issuance and delivery of the certificates for the Securities to the Underwriters, including any stock or other transfer taxes and any stamp or other duties payable upon the sale, issuance or delivery of the Securities to the Underwriters, (iv) the fees and disbursements of the Company’s counsel, accountants and other advisors, (v) the qualification of the Securities under securities laws in accordance with the provisions of Section 3(f) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection therewith and in connection with the preparation of the Blue Sky Survey and any supplement thereto, and the fees and expenses of making the Securities eligible for clearance, settlement and trading through the facilities of DTC, provided that such fees, disbursements and expenses, together with the expenses under clause (viii) below, shall not exceed $10,000 in the aggregate, (vi) the fees and expenses of any transfer agent or registrar for the Securities, (vii) the costs and expenses of the Company relating to investor presentations on

any “road show” undertaken in connection with the marketing of the Securities, including, without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, travel and lodging expenses of the representatives and officers of the Company and any such consultants, and the cost of aircraft and other transportation chartered in connection with the road show, (viii) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriters in connection with, the review by FINRA, if required, of the terms of the sale of the Securities, provided that such fees, disbursements and expenses, together with the expenses under clause (v) above, shall not exceed $10,000 in the aggregate, (ix) any fees payable in connection with the rating of the Securities by the rating agencies, (x) the fees and expenses incurred in connection with the listing of the Securities on the NASDAQ Global Select Market and (xi) the costs and expenses (including, without limitation, any damages or other amounts payable in connection with legal or contractual liability) associated with the reforming of any contracts for sale of the Securities made by the Underwriters caused by a breach of the representation contained in the second sentence of Section 1(a)(ii).

(b) Termination of Agreement. If this Agreement is terminated by the Representatives in accordance with the provisions of Section 6, Section 10(a) or Section 11 hereof, the Company shall reimburse the Underwriters for all of their out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriters.

SECTION 5. Use of Free Writing Prospectuses by Underwriters. Each Underwriter represents and agrees that, unless it obtains the prior consent of the Company and the Representatives, it has not made and will not make any offer relating to the Securities that would constitute an Issuer Free Writing Prospectus, or that would otherwise constitute a “free writing prospectus,” as defined in Rule 405, required to be filed with the Commission.

SECTION 6. Conditions of Underwriters’ Obligations. The obligations of the several Underwriters hereunder are subject to the accuracy of the representations and warranties of the Company contained herein or in certificates of any officer of the Company or any of its Subsidiaries delivered pursuant to the provisions hereof, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement, etc. The Registration Statement was filed by the Company with the Commission not earlier than three years prior to the date hereof and became effective upon filing in accordance with Rule 462(e). Each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus have been filed as required by Rule 424(b) (without reliance on Rule 424(b)(8)) and Rule 433, as applicable, within the time period prescribed by, and in compliance with, the 1933 Act Regulations. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no notice of objection to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) has been received by the Company, no order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the Company’s knowledge, contemplated. The Company has complied with each request (if any) from the Commission for additional information. The Company shall have paid the required Commission filing fees relating to the Securities within the time period required by Rule 456(b)(1)(i) of the 1933 Act Regulations without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) of the 1933 Act Regulations and, if applicable, shall have updated the “Calculation of Registration Fee” table in accordance with Rule 456(b)(1)(ii) either in a post-effective amendment to the Registration Statement or on the cover page of a prospectus filed pursuant to Rule 424(b).

(b) Opinion of Counsel for Company. At the Closing Time, the Representatives shall have received the favorable opinion, dated the Closing Time, of (i) Xxxxxx Xxxxxx, Executive Vice President, Corporate Secretary and General Counsel of the Company, and (ii) Xxxxxxx Xxxxxxx & Xxxxxxxx LLP, special counsel for the Company, in form and substance satisfactory to the Representatives, together with signed or reproduced copies of such letters for each of the other Underwriters, in form and substance reasonably satisfactory to the Representatives.

(c) Opinion of Counsel for Underwriters. At the Closing Time, the Representatives shall have received the favorable opinion, dated the Closing Time, of Xxxxxxxxx & Xxxxxxx LLP, counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters with respect to such matters as the Underwriters may reasonably request. In giving such opinion, such counsel may rely, as to all matters governed by the laws of jurisdictions other than the law of the State of New York and the federal securities laws of the United States, upon the opinions of counsel satisfactory to the Representatives. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers and other representatives of the Company and its subsidiaries and certificates of public officials.

(d) Officers’ Certificate. At the Closing Time, the Representatives shall have received a certificate of the Chief Executive Officer or the President of the Company and of the chief financial or chief accounting officer of the Company, dated the Closing Time, to the effect that (i) there has been no material adverse change in the condition, financial or otherwise, or in the earnings or business affairs of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, (ii) the representations and warranties of the Company in this Agreement are true and correct with the same force and effect as though expressly made at and as of the Closing Time, (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Time, and (iv) the conditions specified in Section 6(a) hereof have been satisfied.

(e) Accountant’s Comfort Letter. At the time of the execution of this Agreement, the Representatives shall have received from Ernst & Young LLP a letter, dated such date, in form and substance satisfactory to the Representatives, together with signed or reproduced copies of such letter for each of the other Underwriters, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and financial information contained in the Registration Statement, the General Disclosure Package and the Prospectus.

(f) Bring-down Comfort Letter. At the Closing Time, the Representatives shall have received from Ernst & Young LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to Section 6(e) hereof, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(g) Certificate of the Chief Financial Officer. At the Closing Time, the Representatives shall have received a certificate executed by the Chief Financial Officer, in form and substance reasonably satisfactory to the Representatives.

(h) No Objection. If a filing with FINRA is required, FINRA has confirmed that it has not raised any objection with respect to the fairness and reasonableness of the underwriting terms and arrangements relating to the offering of the Securities.

(i) No Important Changes. Since the execution of this Agreement, (i) in the judgment of the Representatives, since the date hereof or the respective dates of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, there shall not have occurred any Material Adverse Effect, and (ii) there shall not have been any decrease in or withdrawal of the rating of

any debt securities or preferred securities of the Company or any of its subsidiaries by any “nationally recognized statistical rating organization” (as defined for purposes of Section 3(a)(62) of the 0000 Xxx) or any notice given of any intended or potential decrease in or withdrawal of any such rating or of a possible change in any such rating that does not indicate the direction of the possible change.

(j) Filing of Articles of Amendment. Prior to the Closing Time, the Articles of Amendment for the Securities shall have been duly filed with the Secretary of State of the State of Louisiana and shall be in full force and effect.

(k) Clearance, Settlement and Trading. Prior to the Closing Time, the Securities shall be eligible for clearance, settlement and trading through the facilities of DTC.

(l) Conditions to Purchase of Option Depositary Shares. In the event that the Underwriters exercise their option provided in Section 2(b) hereof to purchase all or any portion of the Option Depositary Shares, the representations and warranties of the Company contained herein and the statements in any certificates furnished by the Company or any of its subsidiaries hereunder shall be true and correct as of each Date of Delivery, the conditions set forth in Sections 5(g), (h) and (i) hereof shall be satisfied at each Date of Delivery and, at the relevant Date of Delivery, the Representatives shall have received:

(i) Officers’ Certificate. A certificate, dated such Date of Delivery, of the Chief Executive Officer or the President of the Company and of the chief financial or chief accounting officer of the Company confirming that the certificate delivered at the Closing Time pursuant to Section 6(d) hereof remains true and correct as of such Date of Delivery.

(ii) Opinion of Counsel for Company. The favorable opinion of (i) Xxxxxx Xxxxxx, Executive Vice President, Corporate Secretary and General Counsel of the Company, and (ii) Xxxxxxx Xxxxxxx & Xxxxxxxx LLP, special counsel for the Company, in form and substance satisfactory to the Representatives, dated such Date of Delivery, relating to the Option Depositary Shares to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 6(b) hereof.

(iii) Opinion of Counsel for Underwriters. The favorable opinion of Xxxxxxxxx & Xxxxxxx LLP, counsel for the Underwriters, in form and substance satisfactory to the Representatives, dated such Date of Delivery, relating to the Option Depositary Shares to be purchased on such Date of Delivery and otherwise to the same effect as the opinion required by Section 6(c) hereof.

(iv) Bring-down Comfort Letter. A letter from Ernst & Young LLP, in form and substance satisfactory to the Representatives, dated such Date of Delivery, substantially in the same form and substance as the letter furnished to the Representatives pursuant to Section 6(e) hereof, except that the “specified date” in the letter furnished pursuant to this paragraph shall be a date not more than three business days prior to such Date of Delivery.

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

(n) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement, or, in the case of any condition to the purchase of Option Depositary Shares on a Date of Delivery which is after the Closing Time, the obligations of the several Underwriters to purchase the relevant Option Depositary Shares, may be terminated by the Representatives by notice to the Company at any time at or prior to Closing Time or such Date of Delivery, as the case may be, and such termination shall be without liability of any party to any other party except as provided in Section 4 and except that Sections 1, 6, 7, 8, 14, 15 and 16 shall survive any such termination and remain in full force and effect.

SECTION 7. Indemnification.

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

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

(ii) against any and all loss, liability, claim, damage and expense whatsoever, as incurred, to the extent of the aggregate amount paid in settlement of any litigation, or any investigation or proceeding by any Governmental Entity, commenced or threatened, or of any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission; provided that (subject to Section 7(d) hereof) any such settlement is effected with the written consent of the Company;

(iii) against any and all expense whatsoever, as incurred (including the fees and disbursements of counsel chosen by the Representatives), reasonably incurred in investigating, preparing or defending against any litigation, or any investigation or proceeding by any Governmental Entity, commenced or threatened, or any claim whatsoever based upon any such untrue statement or omission, or any such alleged untrue statement or omission, to the extent that any such expense is not paid under (i) or (ii) above;

provided, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, or in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(b) Indemnification of Company, Directors and Officers. Each Underwriter severally agrees to indemnify and hold harmless the Company, its affiliates, directors, each of its officers who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in Section 7(a) hereof, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, or in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 7(a) hereof, counsel to the indemnified parties shall be selected by the Representatives, and, in the case of parties indemnified pursuant to Section 7(b) hereof, counsel to the indemnified parties shall be selected by the Company. An indemnifying party may participate at its own expense in the defense of any such action; provided, that counsel to the indemnifying party shall not (except with the prior written consent of the indemnified party) also be counsel to the indemnified party. In no event shall the indemnifying parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any Governmental Entity, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 7 or Section 8 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party.

(d) Settlement without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 7(a)(ii) effected without its written consent if (i) such settlement is entered into more than 60 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 45 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

SECTION 8. Contribution. If the indemnification provided for in Section 7 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company, on the one hand, and the Underwriters, on the other hand, from the offering of the Securities pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in

clause (i) above but also the relative fault of the Company, on the one hand, and the Underwriters, on the other hand, in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

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

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

The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 8 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 8. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 8 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any Governmental Entity, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

Notwithstanding the provisions of this Section 8, no Underwriter shall be required to contribute any amount in excess of the underwriting discount received by such Underwriter in connection with the Securities underwritten by it and distributed to the public.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 0000 Xxx) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 8, each person, if any, who controls an Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act and each Underwriter’s Affiliates, officers, directors and selling agents shall have the same rights to contribution as such Underwriter, and each director of the Company, each officer of the Company who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Company. The Underwriters’ respective obligations to contribute pursuant to this Section 8 are several in proportion to the number of Initial Depositary Shares set forth opposite their respective names in Schedule A hereto and not joint.

SECTION 9. Representations, Warranties and Agreements to Survive. All representations, warranties and agreements contained in this Agreement or in certificates of officers of the Company or any of its subsidiaries submitted pursuant hereto shall remain operative and in full force and effect regardless of (i) any investigation made by or on behalf of any Underwriter or its Affiliates, officers, directors and or selling agents, any person controlling any Underwriter or the Company’s officers or directors or any person controlling the Company and (ii) delivery of and payment for the Securities.

SECTION 10. Termination of Agreement.

(a) Termination. The Representatives may terminate this Agreement, by notice to the Company, at any time at or prior to the Closing Time, (i) if there has been, in the judgment of the Representatives, since the time of execution of this Agreement or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, any material adverse change in the condition, financial or otherwise, or in the earnings or business affairs of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, in each case the effect of which is such as to make it, in the judgment of the Representatives, impracticable or inadvisable to proceed with the completion of the offering of the Securities or to enforce contracts for the sale of the Securities, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission or the NASDAQ Global Select Market, or (iv) if trading generally on the New York Stock Exchange or the NASDAQ Global Select Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by order of the Commission, FINRA or any other Governmental Entity, or (v) if a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or with respect to Clearstream or Euroclear systems in Europe, or (vi) if a banking moratorium has been declared by either Federal, New York or Louisiana authorities.

(b) Liabilities. If this Agreement is terminated pursuant to this Section, such termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 1, 7, 8, 9, 15, 16 and 17 shall survive such termination and remain in full force and effect.

SECTION 11. Default by One or More of the Underwriters. If one or more of the Underwriters shall fail at the Closing Time or a Date of Delivery to purchase the Securities which it or they are obligated to purchase under this Agreement (the “Defaulted Securities”), the Representatives shall have the right, within 24 hours thereafter, to make arrangements for one or more of the non-defaulting Underwriters, or any other underwriters, to purchase all, but not less than all, of the Defaulted Securities in such amounts as may be agreed upon and upon the terms herein set forth; if, however, the Representatives shall not have completed such arrangements within such 24-hour period, then:

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

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

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

In the event of any such default which does not result in a termination of this Agreement or, in the case of a Date of Delivery which is after the Closing Time, which does not result in a termination of the obligation of the Underwriters to purchase and the Company to sell the relevant Option Depositary Shares, as the case may be, either the Representatives or the Company shall have the right to postpone Closing Time or the relevant Date of Delivery, as the case may be, for a period not exceeding seven days in order to effect any required changes in the Registration Statement, the General Disclosure Package or the Prospectus or in any other documents or arrangements. As used herein, the term “Underwriter” includes any person substituted for an Underwriter under this Section 11.

SECTION 12. Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Underwriters shall be directed to the Representatives care of KBW at 000 Xxxxxxx Xxxxxx, 0xx Xxxxx, Xxx Xxxx, Xxx Xxxx 00000, attention of Xxxxx Xxxxxx, fax (000) 000-0000, and ML at 00 Xxxxxxxxxxx Xxxxx, XX0 050 12 02, Xxx Xxxx, Xxx Xxxx 00000, attention of High Grade Transaction Management/Legal, fax (000) 000-0000; and notices to the Company shall be directed to it at 000 Xxxx Xxxxxxxx Xxxxxx, Xxxxxxxxx, Xxxxxxxxx 00000, attention of Xxxxxx X. Xxxxxx, Xx., Executive Vice President, Corporate Secretary and General Counsel, with a copy to Xxxxxxx Xxxxxxx & Xxxxxxxx LLP, 000 Xxxxxxxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000, Attention: Xxx X. Xxxxxxxx and Xxxxxx Xxxx.

SECTION 13. No Advisory or Fiduciary Relationship. The Company acknowledges and agrees that (a) the purchase and sale of the Securities pursuant to this Agreement, including the determination of the initial public offering price of the Securities and any related discounts and commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the several Underwriters, on the other hand, (b) in connection with the offering of the Securities and the process leading thereto, each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Company or any of its subsidiaries or its stockholders, creditors, employees or any other party, (c) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the Company with respect to the offering of the Securities or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company or any of its subsidiaries on other matters) or any other obligation to the Company with respect to the offering of the Securities except the obligations expressly set forth in this Agreement, (d) the Underwriters and their respective Affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company, and (e) the Underwriters have not provided any legal, accounting, financial, regulatory or tax advice with respect to the offering of the Securities and the Company has consulted its own respective legal, accounting, financial, regulatory and tax advisors to the extent it deemed appropriate.

SECTION 14. Parties. This Agreement shall each inure to the benefit of and be binding upon the Underwriters and the Company and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriters and the Company and their respective successors and the controlling persons, Affiliates, selling agents, officers and directors referred to in Sections 7 and 8 and their heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriters and the Company and their respective successors, and said controlling persons, Affiliates, selling agents, officers and directors and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Securities from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION 15. Trial by Jury. Each of the Company (on its behalf and, to the extent permitted by applicable law, on behalf of its stockholders and affiliates) and the Underwriters hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

SECTION 16. GOVERNING LAW. THIS AGREEMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF, THE STATE OF NEW YORK WITHOUT REGARD TO ITS CHOICE OF LAW PROVISIONS.

SECTION 17. Consent to Jurisdiction. Each of the parties hereto agrees that any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby (“Related Proceedings”) shall be instituted in (i) the federal courts of the United States of America located in the City and County of New York, Borough of Manhattan or (ii) the courts of the State of New York located in the City and County of New York, Borough of Manhattan (collectively, the “Specified Courts”), and irrevocably submits to the exclusive jurisdiction (except for proceedings instituted in regard to the enforcement of a judgment of any Specified Court (a “Related Judgment”), as to which such jurisdiction is non-exclusive) of the Specified Courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or proceeding brought in any Specified Court. Each of the parties hereto irrevocably and unconditionally waives any objection to the laying of venue of any suit, action or proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any Specified Court that any such suit, action or proceeding brought in any Specified Court has been brought in an inconvenient forum.

SECTION 18. TIME. TIME SHALL BE OF THE ESSENCE OF THIS AGREEMENT. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 19. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same Agreement.

SECTION 20. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

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


Very truly yours,

IBERIABANK CORPORATION

By:	/s/ Xxxxxxx X. Xxxxxx
	Name:	Xxxxxxx X. Xxxxxx
	Title:	Senior Executive Vice President,
		Chief Financial Officer and Treasurer

[Signature Page to Underwriting Agreement]

CONFIRMED AND ACCEPTED,

as of the date first above written:

XXXXX, XXXXXXXX & XXXXX, INC.

XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX INCORPORATED


By:	XXXXX, XXXXXXXX & XXXXX, INC.

By:	/s/ Xxxx X. Xxxxxxx
	Name:	Xxxx X. Xxxxxxx
	Title:	Managing Director

By: XXXXXXX LYNCH, PIERCE, XXXXXX & XXXXX INCORPORATED



By:	/s/ Xxxxxxxxxx Xxxxxx
	Name:	Xxxxxxxxxx Xxxxxx
	Title:	Managing Director

For themselves and as Representatives of the other Underwriters named in Schedule A hereto.

[Signature Page to Underwriting Agreement]

SCHEDULE A

The initial public offering price per share for the Securities shall be $25.

The purchase price per share for the Securities to be paid by the several Underwriters shall be $24.2125, being an amount equal to the initial public offering price set forth above less $0.7875 per share.


Name of Underwriter	Number of Initial Securities
Xxxxx, Xxxxxxxx & Xxxxx, Inc.		1,000,000
Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated		1,000,000

Total		2,000,000

SCHEDULE B

Issuer Free Writing Prospectuses

1. Final Term Sheet

SCHEDULE C

Final Term Sheet

Filed Pursuant to Rule 433

Registration Statement No. 333-202489

IBERIABANK CORPORATION

PREFERRED STOCK, SERIES C

$50,000,000

2,000,000 Depositary Shares, Each Representing a 1/400^th Interest in a Share of IBERIABANK

Corporation’s 6.60% Fixed-to-Floating Non-Cumulative Perpetual Preferred Stock, Series C

FINAL TERM SHEET

Dated May 3, 2016

This term sheet supplements the information set forth under “Description of Series C Preferred Stock” in the Preliminary Prospectus Supplement dated May 3, 2016 to the Prospectus dated March 4, 2015 (together, the “Preliminary Prospectus”).


Issuer:		IBERIABANK Corporation

Security:		Depositary Shares, each representing a 1/400th interest in a share of IBERIABANK Corporation’s 6.60% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C

Size:		$50,000,000 (or 2,000,000 Depositary Shares)

Over-Allotment Option:		$7,500,000 (or 300,000 Depositary Shares)

Public Offering Price:		$25 per Depositary Share

Net Proceeds (Before Expenses):		$48,425,000 (or $55,688,750 if the underwriters exercise their over-allotment option in full)

Maturity:		Perpetual

Trade Date:		May 3, 2016

Settlement Date:		May 9, 2016 (T+4)

Dividend Rate (Non-Cumulative/Non-Mandatory):		From and including the original issue date to, but excluding, May 1, 2026, 6.60% and from and including May 1, 2026, three-month LIBOR plus 492 basis points


Dividend Payment Dates:		Each May 1, August 1, November 1, and February 1 beginning August 1, 2016 through May 1, 2026, subject to following business day convention (unadjusted), and thereafter each May 1, August 1, November 1, and February 1 beginning May 1, 2026 in accordance with the modified following business day convention (adjusted)

Day Count:		From the issue date to, but excluding, May 1, 2026, 30/360 and thereafter Actual/360

Business Days:		From the issue date, to but excluding, May 1, 2026, New York and thereafter New York/London

Optional Redemption:		At the Issuer’s option, subject to regulatory approval, at a redemption price equal to $10,000 per share (equivalent of $25 per depositary share), plus any declared and unpaid dividends (without regard to any undeclared dividends) to but excluding the redemption date, on any dividend payment date on or after May 1, 2026 and earlier within 90 days following a regulatory capital treatment event as described and subject to limitations in the Preliminary Prospectus

Listing:		The Issuer has filed an application to list the Depositary Shares on the Nasdaq Global Select Market under the symbol “IBKCO.” If the application is approved, trading of the Depositary Shares is expected to begin within 30 days after the issue date

Joint Book-Running Managers:		Xxxxx, Xxxxxxxx & Xxxxx, A Xxxxxx Company Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated

CUSIP/ISIN for the Depositary Shares:		450828 504 / US4508285040

IBERIABANK Corporation (the “Issuer”) has filed a registration statement (including a prospectus supplement and a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read those documents and the other documents that the Issuer has filed with the SEC for more complete information about the Issuer and this offering. You may obtain these documents for free by visiting XXXXX on the SEC website at xxx.xxx.xxx. Alternatively, the joint book-running managers will arrange to send you the prospectus supplement and the prospectus if you request them by contacting Xxxxx, Xxxxxxxx & Xxxxx, A Xxxxxx Company at 000 Xxxxxxx Xxxxxx, Xxxxxx Xxxxx, Xxx Xxxx, XX 00000, by e-mail at XXXxxxxxxXxxxxxx@xxx.xxx, by fax at 000-000-0000, or by calling 1-800-966-1559 or Xxxxxxx Lynch, Pierce, Xxxxxx & Xxxxx Incorporated, at 000 Xxxxxxxx, Xxxxxxxx Xxxxx, Xxx Xxxx, XX, 00000, Attn: Prospectus Department, by email at xx.xxxxxxxxxx_xxxxxxxx@xxxx.xxx or by calling 1-800-294-1322.

SCHEDULE D

Subsidiaries of the Company

IBERIABANK

Acadiana Holdings, L.L.C.

CB Florida CRE Holdings, LLC

CB Florida RRE Holdings, LLC

CSB Alabama CRE Holdings, LLC

CSB Alabama Sunhill Villas Holding, LLC

CSB Alabama RRE Holdings, LLC

CSB Florida CRE Holdings, LLC

CSB Florida Overlook Holdings, LLC

CSB Florida RRE Holdings, LLC

Finesco, LLC

IB SPE Management, Inc.

IBERIABANK Insurance Services, LLC

IBERIABANK Mortgage Company

Iberia Financial Services, L.L.C.

Iberia Investment Fund I, LLC

Iberia Investment Fund II, LLC

Jefferson Insurance Corporation

Laguna Vista, LLC

Xxx Cape, LLC

Liberty Bancorp Xxxxxxx LLC

840 Xxxxxxx LLC

Mercantile Capital Corporation Inc.

North River Holdings, Inc.

XX Xxxxxxx 1 LLC

XX Xxxxxxx 2 LLC

OB Capri LLC

OB Copperhead LLC

OB Creekside LLC

OB Florida CRE Holdings, LLC

OB Florida RRE Holdings, LLC

OB FHB LLC

XX Xxxxxx LLC

OB Keys LLC

OB Manatee Forest LLC

OB Marathon LLC

OB Marco Isle LLC

XX Xxxxxxx Terrace LLC

OB Naples LLC

OB NP LLC

OB RFB LLC

OB Waterford LLC

SB Florida CRE Holdings, LLC

SB Florida RRE Holdings, LLC

Security Mutual Financial Services, Inc.

Lenders Title Company

Asset Exchange, Inc.

United Title of Louisiana, Inc.

United Title of Alabama, Inc.

American Abstract and Title Company, Inc.

1887 Leasing, LLC

IB Aircraft Holdings, LLC

IBERIA Capital Partners L.L.C.

IBERIA CDE, L.L.C.

IBERIA Asset Management, Inc.

IB Holdings, LLC

IBERIABANK Asset Management, Inc.

OB Marina LLC

SB Florida Industrial Holdings, LLC

Significant Subsidiary of the Company

IBERIABANK

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IBERIABANK CORPORATION (a Louisiana corporation) 2,000,000 Depositary Shares Each Representing a 1/400th Interest in a Share Of 6.60% Fixed-to-Floating Rate Non-Cumulative Perpetual Preferred Stock, Series C UNDERWRITING AGREEMENT

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