ZIONS BANCORPORATION UNDERWRITING AGREEMENT 5,750,000 Depositary Shares Each Representing a 1/40th Interest In a Share of Series F Fixed-Rate Non-Cumulative Perpetual Preferred Stock

Exhibit 1.1

ZIONS BANCORPORATION

UNDERWRITING AGREEMENT

5,750,000 Depositary Shares

Each Representing a 1/40th Interest

In a Share of

Series F Fixed-Rate Non-Cumulative

Perpetual Preferred Stock

May 1, 2012

Deutsche Bank Securities Inc.

00 Xxxx Xxxxxx, 0^xx Xxxxx

Xxx Xxxx, Xxx Xxxx 00000

Ladies and Gentlemen:

Zions Bancorporation, a Utah corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell to the underwriter named in Schedule I hereto (the “Underwriter”) an aggregate of 5,750,000 depositary shares of the Company (the “Depositary Shares”), each representing a 1/40th interest in the Company’s Series F Fixed-Rate Non-Cumulative Perpetual Preferred Stock (the “Preferred Stock”) and collectively representing 143,750 shares of Preferred Stock (the “Preferred Shares” and, together with the Depositary Shares, the “Securities”), pursuant to this underwriting agreement (this “Agreement”).

The Preferred Shares shall have the rights, powers and preferences set forth in the Articles of Amendment relating thereto (the “Articles of Amendment”). The Preferred Shares are to be deposited against delivery of depositary receipts (the “Depositary Receipts”) evidencing the Depositary Shares that are to be issued by Zions First National Bank, as depositary (the “Depositary”), under the Deposit Agreement to be entered into among the Company, the Depositary and the holders from time to time of the Depositary Receipts issued thereunder (the “Deposit Agreement”).

Section 1. Representations and Warranties. The Company hereby represents and warrants to, and agrees with, the Underwriter that:

(a) The Offering Documents. An “automatic shelf registration statement” as defined under Rule 405 under the Securities Act of 1933, as amended (the “Act”), on Form S-3 (File No. 333-173299), with respect to the Company’s preferred stock and depositary shares (including the Securities), debt securities, common stock and other securities, including a form of prospectus, was filed by the Company with the Securities and Exchange Commission (the “Commission”) not earlier than three years prior to the date hereof; such registration statement, and any post-effective amendment thereto, became effective on filing; and no stop order suspending the effectiveness of such registration statement or any part thereof has been issued and no proceeding for that purpose has been initiated or, to the knowledge of the Company, threatened by the Commission, and no notice of objection of the Commission to the use of such form of registration statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) under the Act has been received by the Company (the base prospectus filed as part of such registration statement, in the form in which it has most recently been filed with the Commission on or prior to the date of this Agreement, is hereinafter called the “Basic Prospectus”; the

various parts of such registration statement, excluding any Form T-1 but including all exhibits thereto and any prospectus supplement relating to the Securities that is filed with the Commission and deemed by virtue of Rule 430B to be part of such registration statement, each as amended at the time such part of the registration statement became effective, are hereinafter collectively called the “Registration Statement”; the Basic Prospectus, as amended and supplemented immediately prior to the Applicable Time (as defined in Section 1(c) hereof), is hereinafter called the “Pricing Prospectus”; any preliminary prospectus (including any preliminary prospectus supplement) specifically relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act is hereinafter called a “Preliminary Prospectus”; the form of final prospectus specifically relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act in accordance with Section 5(a) hereof, is hereinafter called the “Prospectus”; any reference herein to the Basic Prospectus, the Pricing Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include the documents incorporated by reference therein pursuant to Item 12 of Form S -3 under the Act, as of the date of such prospectus; any reference to any amendment or supplement to the Basic Prospectus, any Preliminary Prospectus or the Prospectus shall be deemed to refer to and include any post-effective amendment to the Registration Statement, any prospectus supplement relating to the Securities filed with the Commission pursuant to Rule 424(b) under the Act and any documents filed under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and incorporated therein, in each case after the date of the Basic Prospectus, such Preliminary Prospectus or the Prospectus, as the case may be; any reference to any amendment to the Registration Statement shall be deemed to refer to and include any annual report of the Company filed pursuant to Section 13(a) or 15(d) of the Exchange Act after the effective date of the Registration Statement that is incorporated by reference in the Registration Statement; and any “issuer free writing prospectus” as defined in Rule 433 under the Act relating to the Securities is hereinafter called an “Issuer Free Writing Prospectus”).

(b) Preliminary Prospectus. No order preventing or suspending the use of the Basic Prospectus, any Preliminary Prospectus or any Issuer Free Writing Prospectus has been issued by the Commission, and the Basic Prospectus and each Preliminary Prospectus, at the time of filing thereof, conformed in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder, and did not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter specifically for use therein.

(c) Pricing Disclosure Package. For the purposes of this Agreement, the “Applicable Time” means the time at which bids may no longer be submitted to Zions Direct, Inc., the auction agent (the “Auction Agent”), in connection with the auction relating to the Securities (the “Auction”), such time being referred to in the Pricing Prospectus as the submission deadline, as set forth in the Pricing Prospectus (including any extension of such deadline); the Pricing Prospectus and any applicable Issuer Free Writing Prospectus(es) issued at or prior to such Applicable Time and listed on Schedule II(c) (collectively, the “Pricing Disclosure Package”) as of the Applicable Time, did not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; and each Issuer Free Writing Prospectus listed on Schedule II(a) or Schedule II (c) hereto does not conflict with the information contained in the Registration Statement, the Pricing Prospectus or the Prospectus and each such Issuer Free Writing Prospectus, as supplemented by and taken together with the Pricing Disclosure Package as of the Applicable Time, did not include any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter specifically for use therein.

(d) Incorporated Documents. The documents incorporated by reference in the Pricing Prospectus and the Prospectus, when they became effective or were filed with the Commission, as the case may be, conformed in all material respects to the applicable requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder, and none of such documents, when they became effective or were filed with the Commission, contained an untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading; and any further documents so filed and incorporated by reference in the Prospectus or any further amendment or supplement thereto, when such documents become effective or are filed with the Commission, as the case may be, will conform in all material respects to the applicable requirements of the Act or the Exchange Act, as applicable, and the rules and regulations of the Commission thereunder and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter specifically for use therein; no such documents were filed with the Commission since the Commission’s close of business on the business day immediately prior to the date of this Agreement and prior to the execution of this Agreement, except as set forth on Schedule II(b) hereto; and the financial statements of the Company and its consolidated subsidiaries incorporated by reference in the Registration Statement, the Pricing Prospectus and the Prospectus, together with the related schedules and notes, present fairly in all material respects the financial position of the Company and its consolidated subsidiaries at the dates indicated and the results of operations and cash flows for the periods shown in such financial statements and, except as otherwise disclosed in the Registration Statement, the Pricing Prospectus and the Prospectus, such financial statements have been prepared or will be prepared in conformity with generally accepted accounting principles in the United States applied on a consistent basis.

(e) Registration Statement and Prospectus. The Registration Statement conforms, and the Prospectus and any further amendments or supplements to the Registration Statement and the Prospectus will conform, in all material respects to the requirements of the Act and the rules and regulations of the Commission thereunder and do not and will not, as of the applicable effective date as to each part of the Registration Statement and as of the applicable filing date as to the Prospectus and any amendment or supplement thereto, contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter specifically for use therein.

(f) No Material Adverse Change. Neither the Company nor any of its subsidiaries has sustained since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Pricing Prospectus; and, since the respective dates as of which information is given in the Registration Statement and the Pricing Prospectus, there has not been any change in the capital stock (other than (i) repurchases of common stock of the Company in an aggregate amount that is less than 2% of the number of outstanding shares of common stock as of the time this representation is given or deemed given and (ii) issuances of or other transfers of capital stock in the ordinary course of business pursuant

to the Company’s employee benefit plans or awards issued thereunder or its dividend reinvestment plan) or long-term debt of the Company or any of its subsidiaries or any material adverse change, or any development involving a prospective material adverse change, in or affecting the financial condition, results of operations, shareholders’ equity, business or properties of the Company and its subsidiaries, taken as a whole, otherwise than as disclosed, set forth or contemplated in the Pricing Prospectus.

(g) Organization, Qualification and Good Standing. The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the jurisdiction of its incorporation, with power and authority (corporate and other) to own its properties and conduct its business as described in the Pricing Prospectus. The Company has been duly qualified as a foreign corporation for the transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or leases properties or conducts any business so as to require such qualification, or is subject to no material liability or disability by reason of the failure to be so qualified in any such jurisdiction.

(h) Capitalization. The Company has an authorized capitalization as set forth in the Pricing Prospectus, and all of the issued shares of capital stock of the Company have been duly and validly authorized and issued and are fully paid and non-assessable and have been issued in compliance in all material respects with applicable federal and state securities laws. None of the outstanding shares of common stock were issued in violation of any preemptive rights, rights of first refusal or other similar rights to subscribe for or purchase securities of the Company. Except as described in the Registration Statement and the Pricing Prospectus, and except with respect to equity awards issued under the Company’s equity incentive plans or pursuant to the Securities Purchase Agreement, by and between the Company and the United States Department of the Treasury under the Troubled Asset Relief Program Capital Purchase Program (the “CPP Agreement”), there are no outstanding options, warrants, preemptive rights, rights of first refusal or other rights to purchase, or equity or debt securities convertible into or exchangeable or exercisable for, any capital stock of the Company.

(i) The Securities and the Deposit Agreement. The deposit of the Preferred Shares by the Company in accordance with the Deposit Agreement has been duly authorized by the Company, and the Preferred Shares have been duly and validly authorized by the Company, except that the Articles of Amendment have not yet been approved by the Company’s Board of Directors or a committee thereof, and, when the Depositary Shares are issued and delivered by the Company pursuant to this Agreement, the Preferred Shares will have been duly executed, issued and delivered and will be fully paid and nonassessable; assuming due execution and delivery of the Depositary Receipts and the Deposit Agreement by the Depositary, each Depositary Receipt will be duly and validly issued and will entitle the holder thereof to the benefits provided therein and in the Deposit Agreement; the Deposit Agreement has been duly and validly authorized by the Company, and, at the Time of Delivery (as defined in Section 4(a) hereof), will have been duly executed and delivered by the Company and will constitute a valid and legally binding instrument, enforceable in accordance with its terms, subject, as to enforcement, to bankruptcy, insolvency, reorganization and other laws of general applicability relating to or affecting creditors’ rights and to general equity principles; and the Securities conform and the Deposit Agreement will conform in all material respects to the descriptions thereof contained in the Pricing Disclosure Package and the Prospectus.

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

(k) Articles of Amendment. At the Time of Delivery (as defined in Section 4(a) hereof), the Articles of Amendment will have been duly and validly authorized by the Company.

(l) Fair Summary. The statements set forth in the Pricing Prospectus and the Prospectus under the captions “Description of Series F Preferred Stock,” “Description of Depositary Shares,” “Description of Preferred Stock We May Offer” and “Description of Depositary Shares We May Offer,” insofar as they purport to constitute a summary of the terms of the Securities, “The Auction Process,” insofar as they purport to describe the auction process used to determine the public offering price of the Securities and under the captions “Certain United States Federal Income Tax Consequences,” “United States Taxation,” “Plan of Distribution” and “Underwriting,” insofar as they purport to describe the provisions of the laws and documents referred to therein, are accurate, complete and fair.

(m) No Registration Rights by Others. Except as contemplated by the CPP Agreement, there are no persons with registration or other similar rights to have any equity or debt securities registered for sale under the Registration Statement or included in the offering contemplated by this Agreement, except for such rights as have been duly waived.

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

(o) No Conflicts; No Consents or Approvals Required. The issuance and sale of the Securities, the execution and delivery by the Company of this Agreement, the compliance by the Company with all of the provisions of the Securities, the Deposit Agreement and this Agreement, and the consummation of the transactions herein and therein contemplated will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under (or, with the giving of notice or lapse of time, constitute a default under), (i) any indenture, loan agreement, mortgage, deed of trust or other agreement or instrument to which the Company is a party or by which the Company is bound or to which any of the property or assets of the Company is subject, (ii) the Restated Articles of Incorporation, as amended, or the Restated Bylaws of the Company or (iii) any statute or any order, rule or regulation of any court or governmental agency or body having jurisdiction over the Company or any of its properties, except where, for purposes of clauses (i) and (iii), such conflict, breach, violation or default would not, individually or in the aggregate, have a material adverse effect on the current or future financial condition, results of operations, shareholders’ equity, business or properties of the Company and its subsidiaries, taken as a whole (a “Material Adverse Effect”); and no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issuance and sale of the Securities, the execution and delivery by the Company of the Deposit Agreement and this Agreement, or the consummation by the Company of the transactions contemplated by the Deposit Agreement or this Agreement, except such as have been obtained under the Act and such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the sale of the Securities by the Underwriter.

(p) No Violation or Default. Neither the Company nor any of its significant subsidiaries (as defined in Rule 1-02 of Regulation S-X of the Commission) (each, a “Significant Subsidiary”) is (i) in violation of the Restated Articles of Incorporation, as amended, or the Restated Bylaws of the Company, or the charter or bylaws of such Significant Subsidiary, as applicable, (ii) in default (or, with the giving of notice or lapse of time would be in default) in the performance or observance of any obligation, agreement, covenant or condition contained in any indenture, loan agreement, mortgage, deed of trust or other agreement or instrument to which it is a party or by which it or any of its properties may be bound or (iii) in violation of any statute, law, rule, regulation, judgment, order or decree of any court, regulatory body, administrative agency, governmental body, arbitrator or other authority having jurisdiction over the Company or any of the Significant Subsidiaries, except where, for purposes of clauses (ii) and (iii), such default or violation would not, individually or in the aggregate, have a Material Adverse Effect.

(q) Legal Proceedings. Other than as set forth in the Pricing Prospectus, there are no legal or governmental proceedings pending to which the Company or any of its subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which, if determined adversely to the Company or any of its subsidiaries, would individually or in the aggregate have a Material Adverse Effect; and, to the best of the Company’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others.

(r) Investment Company Act. The Company is not and, after giving effect to the offering and sale of the Securities as herein contemplated and the application of the proceeds thereof as described in the Pricing Prospectus, will not be an “investment company,” as such term is defined in the Investment Company Act of 1940, as amended.

(s) Well-Known Seasoned Issuer. (A) (i) At the time of filing the Registration Statement, (ii) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the Exchange Act or form of prospectus) and (iii) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) under the Act) made any offer relating to the Securities in reliance on the exemption of Rule 163 under the Act, the Company was a “well-known seasoned issuer” as defined in Rule 405 under the Act; and (B) at the earliest time after the filing of the Registration Statement that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) under the Act) of the Securities, the Company was not an “ineligible issuer” as defined in Rule 405 under the Act.

(t) Independent Accountants. Ernst & Young LLP, who have certified certain financial statements of the Company and its subsidiaries and have audited the Company’s internal control over financial reporting, are independent public accountants as required by the Act and the Exchange Act and the rules and regulations of the Commission thereunder.

(u) Organization, Good Standing and Capital Stock of Significant Subsidiaries. Each Significant Subsidiary of the Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of its jurisdiction of incorporation; and all of the issued shares of capital stock of each such Significant Subsidiary have been duly and validly authorized and issued, are fully paid and non-assessable, and (except for directors’ qualifying shares) are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims.

(v) Accounting Controls. The Company maintains a system of internal control over financial reporting (as such term is defined in Rule 13a-15(f) under the Exchange Act) that complies with the requirements of the Exchange Act and has been designed by the Company’s principal executive officer and principal financial officer, or under their supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. The Company’s internal control over financial reporting was effective as of December 31, 2011, and the Company is not aware of any material weaknesses in its internal control over financial reporting. Since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus, there has been no change in the Company’s internal control over financial reporting that has materially adversely affected, or is reasonably likely to materially adversely affect, the Company’s internal control over financial reporting.

(w) Disclosure Controls. The Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15(e) under the Exchange Act, the scope of which includes interactive data in eXtensible Business Reporting Language) that comply with the requirements of the Exchange Act; such disclosure controls and procedures have been designed to ensure 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 those entities; and such disclosure controls and procedures are effective.

(x) Financial Holding Company. The Company is a financial holding company registered under the Bank Holding Company Act of 1956, as amended; and each of the Company’s banking subsidiaries holds the requisite authority from its respective banking regulatory authority to do business as a national banking association under the laws of the United States or as a state-chartered banking corporation under the laws of such subsidiary’s jurisdiction of incorporation, as the case may be.

(y) OFAC. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent or employee of the Company or any of its subsidiaries (in their capacity as such) is currently subject to any U.S. sanctions administered by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”); and the Company will not directly or indirectly use the proceeds of the offering, or lend, contribute or otherwise make available such proceeds, to any subsidiary, joint venture partner or other person or entity, for the purpose of financing the activities of any person currently subject to any U.S. sanctions administered by OFAC.

(z) Compliance with Regulators. The Company and its Significant Subsidiaries are in compliance with all applicable laws administered by and regulations of the Board of Governors of the Federal Reserve System, the Federal Deposit Insurance Corporation, the Office of the Comptroller of the Currency and any other federal or state bank regulatory authority with jurisdiction over the Company or any such Significant Subsidiary, other than where such failures to comply would not, individually or in the aggregate, have a Material Adverse Effect.

(aa) Licenses and Permits. The Company and its subsidiaries possess all certificates, licenses, authorizations and permits issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses, and neither the Company nor any of its subsidiaries has received any notice of proceedings relating to the revocation or modification of any such certificate, license, authorization or permit, in each case except for such certificates, licenses, authorizations and permits which the failure to have or the revocation or modification of which would not, individually or in the aggregate have a Material Adverse Effect.

(bb) No Agreements with Regulators. There are no written agreements or other written statements as described under 12 U.S.C. 1818(u) between any federal banking agency and the Company or any of its subsidiaries (whether or not such federal banking agency has determined that publication would be contrary to the public interest) and there are no agreements, memoranda of understanding, cease and desist orders, orders of prohibition or suspension or consent decrees between any federal or state regulatory authority and the Company or any of its subsidiaries, in each case other than such agreements, memoranda of understanding, cease and desist orders, orders of prohibition or suspension or consent decrees as would not, individually or in the aggregate, have a Material Adverse Effect.

(cc) Anti-Money Laundering. The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with all applicable financial recordkeeping and reporting requirements, including those of the Bank Secrecy Act, as amended by Title III of the Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 (USA PATRIOT Act), and the applicable anti-money laundering statutes of jurisdictions

where the Company and its subsidiaries conduct business, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any governmental agency (collectively, the “Anti-Money Laundering Laws”), except where the failure to so comply would not, individually or in the aggregate, have a Material Adverse Effect, and no action, suit or proceeding by or before any court or governmental agency, authority or body or any arbitrator involving the Company or any of its subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the knowledge of the Company, threatened that would, individually or in the aggregate, have a Material Adverse Effect.

(dd) FCPA. Neither the Company nor any of its subsidiaries nor, to the knowledge of the Company, any director, officer, agent or employee of the Company or any of its subsidiaries (in their capacity as such) has used any corporate funds for any unlawful contribution, gift, entertainment or other unlawful expense relating to political activity in violation of the U.S. Foreign Corrupt Practices Act of 1977 (the “FCPA”); made any direct or indirect unlawful payment to any “foreign official” (as such term is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office in contravention of the FCPA; or made any bribe, rebate, payoff, influence payment, kickback or other unlawful payment prohibited under any applicable law or regulation equivalent to the FCPA.

(ee) No Stabilization. The Company has not taken and will not take, directly or indirectly, any action designed to or that might be reasonably expected to cause or result in stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Securities.

(ff) XBRL. The interactive data in eXtensible Business Reporting Language included or incorporated by reference in the Registration Statement, the Prospectus and the Pricing Disclosure Package fairly presents the information called for in all material respects and has been prepared in all material respects in accordance with the Commission’s rules and guidelines applicable thereto.

(gg) Officers’ Certificate. Any certificate signed by any officer of the Company delivered to the Underwriter or to counsel for the Underwriter pursuant to or in connection with this Agreement shall be deemed a representation and warranty by the Company to the Underwriter as to the matters covered thereby as of the date or dates indicated in such certificate.

Section 2. Sale and Delivery of Securities.

(a) Subject to the terms and conditions set forth herein, the Company agrees to sell to the Underwriter and the Underwriter agrees to purchase from the Company, at a purchase price per Depositary Share of $24.625, the number of Depositary Shares set forth opposite the name of the Underwriter in Schedule I hereto. The total number of Depositary Shares to be purchased by the Underwriter pursuant to this Agreement shall be the aggregate number of Depositary Shares as set forth in Schedule I hereto.

Section 3. Offering by the Underwriter. Upon authorization by the Underwriter of the release of the Securities, the Underwriter proposes to offer the Securities for sale upon the terms and conditions set forth in the Prospectus.

Section 4. Delivery of the Depositary Shares.

(a) The Depositary Shares to be purchased by the Underwriter hereunder will be represented by one or more definitive global Depositary Receipts in book-entry form which will be deposited by or on behalf of the Company with The Depository Trust Company (“DTC”) or its designated custodian.

The Company will deliver the Depositary Shares to the Underwriter, against payment by or on behalf of the Underwriter of the purchase price therefor by wire transfer of Federal (same-day) funds to the account specified by the Company to the Underwriter at least forty-eight hours in advance, by causing DTC to credit the Depositary Shares to the account of Deutsche Bank Securities Inc. at DTC. The Company will cause a certificate representing the Preferred Shares and the global Depositary Receipt, representing the Depositary Shares, to be made available to the Underwriter for checking at least twenty-four hours prior to any Time of Delivery (as defined below) at the office of DTC or its designated custodian (the “Designated Office”). The time and date of such delivery and payment shall be 9:30 a.m., New York City time, on May 7, 2012 or such other time and date as the Underwriter and the Company may agree upon in writing. Such time and date are herein called the “Time of Delivery.”

(b) The documents to be delivered at the Time of Delivery by or on behalf of the parties hereto pursuant to Section 8 hereof, including the cross-receipt for the Depositary Shares and any additional documents requested by the Underwriter pursuant to Section 8(j) hereof, will be delivered at the offices of Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP, Xxx Xxxxxxx Xxxxx, Xxx Xxxx, Xxx Xxxx 00000 (the “Closing Location”), and the Depositary Shares will be delivered at the Designated Office, all at the Time of Delivery. A meeting will be held at the Closing Location at 1:00 p.m., New York City time, on the New York Business Day next preceding the Time of Delivery, at which meeting the final drafts of the documents to be delivered pursuant to the preceding sentence will be available for review by the parties hereto. “New York Business Day” shall mean each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in New York City are generally authorized or obligated by law or executive order to close.

Section 5. Covenants. The Company agrees with the Underwriter:

(a) Required Filings; Notice to the Underwriter. To prepare the Prospectus in a form approved by the Underwriter and to file such Prospectus pursuant to Rule 424(b) under the Act not later than the Commission’s close of business on the second business day following the date of this Agreement; to make no further amendment or any supplement to the Registration Statement, the Basic Prospectus or the Prospectus prior to the Time of Delivery which shall be disapproved by the Underwriter promptly after reasonable notice thereof; so long as the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required in connection with the offering or sale of the Securities; to advise the Underwriter, promptly after it receives notice thereof, of the time when any amendment to the Registration Statement has been filed or becomes effective or any amendment or supplement to the Prospectus has been filed and to furnish the Underwriter with copies thereof; to prepare a final term sheet, containing solely a description of the Securities in a form approved by the Underwriter and to file such term sheet pursuant to Rule 433(d) under the Act within the time required by such Rule; to file promptly all other material required to be filed by the Company with the Commission pursuant to Rule 433(d) under the Act; to file promptly all reports and any definitive proxy or information statements required to be filed by the Company with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of the Prospectus and for so long as the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required in connection with the offering or sale of the Securities; to advise the Underwriter, promptly after it receives notice thereof, of the issuance by the Commission of any stop order or of any order preventing or suspending the use of any Preliminary Prospectus or other prospectus in respect of the Securities, of any 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) under the Act, of the suspension of the qualification of the Securities for offering or sale in any jurisdiction, of the initiation or threatening of any proceeding for any such purpose, or of any request by the Commission for the amending or supplementing of the Registration Statement or the Prospectus or for additional information; and, in the event of the issuance of any stop order or of any order preventing or suspending the use of any

Preliminary Prospectus or other prospectus in respect of the Securities or suspending any such qualification, to promptly use its reasonable best efforts to obtain the withdrawal of such order; and in the event of any such issuance of a notice of objection, promptly to take such reasonable steps as may be necessary to permit offers and sales of the Securities by the Underwriter, which may include, without limitation, amending the Registration Statement or filing a new registration statement, at the Company’s expense (references herein to the Registration Statement shall include any such amendment or new registration statement).

(b) Rule 430B(h). If required by Rule 430B(h) under the Act, to prepare a form of prospectus in a form approved by the Underwriter and to file such form of prospectus pursuant to Rule 424(b) under the Act not later than may be required by Rule 424(b) under the Act; and to make no further amendment or supplement to such form of prospectus which shall be disapproved by the Underwriter promptly after reasonable notice thereof.

(c) Qualification of Securities. Promptly from time to time to take such action as the Underwriter may reasonably request to qualify the Securities for offering and sale under the securities laws of such jurisdictions as the Underwriter may request and to comply with such laws so as to permit the continuance of sales and dealings therein in such jurisdictions for as long as may be necessary to complete the distribution of the Securities; provided that in connection therewith, the Company shall not be required to qualify as a foreign corporation or to file a general consent to service of process in any jurisdiction.

(d) Delivery of Copies; Ongoing Compliance. Prior to 10:00 a.m., New York City time, on the New York Business Day next succeeding the date of this Agreement, and thereafter from time to time, to furnish the Underwriter with written and electronic copies of the Prospectus in New York City in such quantities and at such locations as the Underwriter may reasonably request, and, if the delivery of a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is required at any time prior to the expiration of nine months after the time of issue of the Prospectus in connection with the offering or sale of the Securities and if at such time any event shall have occurred as a result of which the Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made when such Prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) is delivered, not misleading, or, if for any other reason it shall be necessary during such same period to amend or supplement the Prospectus or to file under the Exchange Act any document incorporated by reference in the Prospectus in order to comply with the Act or the Exchange Act, to notify the Underwriter and upon the Underwriter’s request to file such document and to prepare and furnish without charge to the Underwriter and to any dealer in securities as many written and electronic copies as they may from time to time reasonably request of an amended Prospectus or a supplement to the Prospectus which will correct such statement or omission or effect such compliance; and in case the Underwriter is required to deliver a prospectus (or in lieu thereof, the notice referred to in Rule 173(a) under the Act) in connection with sales of any of the Securities at any time nine months or more after the time of issue of the Prospectus, upon the request of the Underwriter but at the expense of the Underwriter, to prepare and deliver to the Underwriter as many written and electronic copies as the Underwriter may request of an amended or supplemented Prospectus complying with Section 10(a)(3) of the Act.

(e) Earnings Statement. To make generally available to its security holders as soon as practicable, but in any event not later than sixteen months after the effective date of the Registration Statement (as defined in Rule 158(c) under the Act), an earnings statement of the Company and its subsidiaries (which need not be audited) complying with Section 11(a) of the Act and the rules and regulations of the Commission thereunder (including, at the option of the Company, Rule 158).

(f) Exchange Listing. To use its commercially reasonable efforts to list the Depositary Shares for trading on the New York Stock Exchange (“NYSE”).

(g) Filing Fees. To pay the required Commission filing fees relating to the Securities within the time required by Rule 456(b)(1) under the Act without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) under the Act.

(h) Use of Proceeds. To use the net proceeds received by it from the sale of the Depositary Shares pursuant to this Agreement in the manner specified in the Pricing Prospectus under the caption “Use of Proceeds.”

(i) NYSE. In connection with the offering and sale of the Securities, to file with the NYSE all documents and notices, and make all certifications, required by the NYSE of companies that have secondary listings on the NYSE.

(j) No Stabilization. To not take, directly or indirectly, any action designed to cause or result in, or that might reasonably be expected to constitute, under the Exchange Act or otherwise, the stabilization or manipulation of the price of any securities of the Company to facilitate the sale or resale of the Securities.

(k) Company Lockup. The Company will not, without the prior consent of the Underwriter, offer, pledge, announce the intention to sell, 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, lend or otherwise transfer or dispose of, for a period of 30 days after the date hereof, except as provided hereunder and except with respect to any such transactions relating to the Company’s Series A Floating Rate Non-Cumulative Perpetual Preferred Stock, 9.50% Series C Non-Cumulative Perpetual Preferred Stock, Series D Non-Cumulative Perpetual Preferred Stock or Series E Fixed Rate Non-Cumulative Perpetual Preferred Stock (other than any new issuances of such securities that are not pursuant to an exchange offer conducted in accordance with Section 3(a)(9) of the Act), any depositary shares or preferred stock, or securities convertible into or exchangeable for any depositary shares, any preferred stock or any such other securities of the Company which are substantially similar to the Securities.

(l) Articles of Amendment. To obtain the necessary approval from the Company’s Board of Directors or a committee thereof of the Articles of Amendment prior to the Time of Delivery. At the Time of Delivery, the Articles of Amendment will have been duly and validly authorized by the Company.

Section 6. Free Writing Prospectus.

(a) (i) The Company represents and agrees that, without the prior consent of the Underwriter, it has not made and will not make any offer relating to the Securities that would constitute a “free writing prospectus” as defined in Rule 405 under the Act;

(ii) the Underwriter represents and agrees that, without the prior consent of the Company, it has not made and will not make any offer relating to the Securities that would constitute a free writing prospectus required to be filed with the Commission; and

(iii) any such free writing prospectus the use of which has been consented to by the Company and the Underwriter (including the final term sheet prepared and filed pursuant to Section 5(a) hereof) is listed on Schedule II(a) or Schedule II(c) hereto.

(b) The Company has complied and will comply with the requirements of Rule 433 under the Act applicable to any Issuer Free Writing Prospectus, including timely filing with the Commission or retention where required and legending.

(c) The Company agrees that if at any time following issuance of an Issuer Free Writing Prospectus any event occurred or occurs as a result of which such Issuer Free Writing Prospectus would conflict with the information in the Registration Statement, the Pricing Prospectus or the Prospectus or would include an untrue statement of a material fact or omit to state any material fact necessary in order to make the statements therein, in the light of the circumstances then prevailing, not misleading, the Company will give prompt notice thereof to the Underwriter and, if requested by the Underwriter, will prepare and furnish without charge to the Underwriter an Issuer Free Writing Prospectus or other document which will correct such conflict, statement or omission; provided, however, that this representation and warranty shall not apply to any statements or omissions in an Issuer Free Writing Prospectus made in reliance upon and in conformity with information furnished in writing to the Company by the Underwriter specifically for use therein.

Section 7. Payment of Expenses. The Company covenants and agrees with the Underwriter that the Company will pay or cause to be paid the following: (i) the fees, disbursements and expenses of the Company’s counsel and accountants in connection with the registration of the Securities under the Act and all other expenses in connection with the preparation, printing and filing of the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, any Issuer Free Writing Prospectus and the Prospectus and amendments and supplements thereto and the mailing and delivering of copies thereof to the Underwriter and dealers; (ii) the cost of printing or producing this Agreement, any Blue Sky and Legal Investment Memoranda, closing documents (including any compilations thereof) and any other documents in connection with the offering, purchase, sale and delivery of the Securities; (iii) all expenses in connection with the qualification of the Securities for offering and sale under state securities laws as provided in Section 5(c) hereof, including the fees and disbursements of counsel for the Underwriter in connection with such qualification and in connection with the Blue Sky and Legal Investment Surveys; (iv) any fees charged by securities rating services for rating the Securities; (v) any filing fees incident to, and the fees and disbursements of counsel for the Underwriter in connection with, any required review by the Financial Industry Regulatory Authority, Inc. of the terms of the sale of the Securities; (vi) all fees and expenses in connection with listing the Depositary Shares on the NYSE; (vii) the cost of preparing the Securities; (viii) the costs and charges of the Depositary, any transfer agent or registrar or any dividend distribution agent; and (ix) all other costs and expenses incident to the performance of its obligations hereunder which are not otherwise specifically provided for in this Section. It is understood, however, that, except as provided in this Section, and Sections 9 and 12 hereof, the Underwriter will pay all of its own costs and expenses, including the fees of its counsel, transfer taxes on resale of any of the Securities by it, and any advertising expenses connected with any offers it may make.

Section 8. Conditions of Obligations of the Underwriter. The obligations of the Underwriter hereunder shall be subject, in its discretion, to the condition that (i) all representations and warranties and other statements of the Company herein are, at and as of the Time of Delivery, true and correct (ii) the Company shall have performed all of its obligations hereunder theretofore to be performed and (iii) the following additional conditions:

(a) Registration Compliance; No Stop Order. The Prospectus shall have been filed with the Commission pursuant to Rule 424(b) under the Act within the applicable time period prescribed for such filing by the rules and regulations under the Act and in accordance with Section 5(a) hereof; the final term sheet contemplated by Section 5(a) hereof, and any other material required to be filed by the Company pursuant to Rule 433(d) under the Act, shall have been filed with the Commission within the applicable time periods prescribed for such filings by Rule 433; no stop order suspending the

effectiveness of the Registration Statement or any part thereof shall have been issued and no proceeding for that purpose shall have been initiated or threatened by the Commission and 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) under the Act shall have been received; no stop order suspending or preventing the use of the form of the Prospectus or any Issuer Free Writing Prospectus shall have been initiated or threatened by the Commission; and all requests for additional information on the part of the Commission shall have been complied with to the reasonable satisfaction of the Underwriter.

(b) Opinion and Negative Assurance Letters of Counsel to the Underwriter. Xxxxxx Xxxxxxxx Xxxxx & Xxxxxxxx LLP, counsel for the Underwriter, shall have furnished to the Underwriter such written opinion or opinions, dated the Time of Delivery, in form and substance reasonably satisfactory to the Underwriter, with respect to such matters as the Underwriter may reasonably request, and such counsel shall have received such papers and information as they may reasonably request to enable them to pass upon such matters.

(c) Opinion and Negative Assurance Letters of Counsel to the Company. Xxxxxxxx & Xxxxxxxx LLP and Xxxxxxxxx Xxxxxxx & XxXxxxxxxx, a Professional Corporation, counsels for the Company, shall each have furnished to the Underwriter their written opinions, each dated the Time of Delivery, substantially in the form of Annex I(a), Annex I(b), Annex I(c) and Annex I(d) hereto, as applicable.

(d) Comfort Letters. On the date of the Prospectus at a time prior to the execution of this Agreement, at 9:30 a.m., New York City time, on the effective date of any post-effective amendment to the Registration Statement filed subsequent to the date of this Agreement and also at the Time of Delivery, Ernst & Young LLP shall have furnished to the Underwriter a letter or letters, dated the respective dates of delivery thereof, in form and substance reasonably satisfactory to the Underwriter and its counsel, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements of the Company and its subsidiaries included or incorporated by reference in the Registration Statement.

(e) No Material Adverse Change. (i) Neither the Company nor any of its subsidiaries shall have sustained since the date of the latest audited financial statements included or incorporated by reference in the Pricing Prospectus any loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, otherwise than as set forth or contemplated in the Pricing Prospectus, and (ii) since the respective dates as of which information is given in the Pricing Prospectus there shall not have been any change in the capital stock or long term debt of the Company or any of its subsidiaries or any change, or any development involving a prospective change, in or affecting the general affairs, management, financial position, stockholders’ equity or results of operations of the Company and its subsidiaries, otherwise than as set forth or contemplated in the Pricing Prospectus, the effect of which, in any such case described in clause (i) or (ii), is in the judgment of the Underwriter so material and adverse as to make it impracticable or inadvisable to proceed with the public offering or the delivery of the Securities on the terms and in the manner contemplated in the Prospectus.

(f) Listing. The Company shall have applied for listing of the Depositary Shares on the NYSE.

(g) No Ratings Downgrade. On or after the Applicable Time, (i) no downgrading shall have occurred in the rating accorded the Company’s debt securities or preferred stock by any “nationally recognized statistical rating organization,” as that term is defined by the Commission for purposes of Rule 436(g)(2) under the Act, and (ii) no such organization shall have publicly announced that it has under surveillance or review, with possible negative implications, its rating of any of the Company’s debt securities or preferred stock.

(h) No Market Disruption. On or after the Applicable Time there shall not have occurred any of the following: (i) a suspension or material limitation in trading in securities generally on the NYSE or the NASDAQ Global Select Market (“NASDAQ”); (ii) a suspension or material limitation in trading in the Company’s securities on the NYSE or NASDAQ; (iii) a general moratorium on commercial banking activities declared by either Federal or New York, California, Utah, Nevada, Colorado, Washington, Idaho, Arizona or Texas State authorities or a material disruption in commercial banking or securities settlement or clearance services in the United States; (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war or (v) the occurrence of any other calamity or crisis or any change in financial, political or economic conditions in the United States or elsewhere, if the effect of any such event specified in clause (iv) or (v) in the judgment of the Underwriter makes it impracticable or inadvisable to proceed with the public offering or the delivery of the Securities on the terms and in the manner contemplated in the Prospectus.

(i) Prospectus Delivery. The Company shall have complied with the provisions of Section 5(d) hereof with respect to the timely furnishing of prospectuses.

(j) Officers’ Certificates. The Company shall have furnished or caused to be furnished to the Underwriter, at the Time of Delivery, certificates of officers of the Company satisfactory to the Underwriter as to the accuracy of the representations and warranties of the Company herein at and as of such time, as to the performance by the Company of all of its obligations hereunder to be performed at or prior to such time, as to the matters set forth in subsections (a) and (e) of this Section 8 and as to such other matters as the Underwriter may reasonably request.

(k) Deposit of Preferred Shares. The Depositary shall have furnished to the Underwriter a certificate evidencing the deposit of the Preferred Shares underlying the Depositary Shares.

(l) Articles of Amendment. The Articles of Amendment shall have been duly and validly authorized by the Company’s Board of Directors or a committee thereof. The Articles of Amendment shall have been validly filed with the Utah Division of Corporations and Commercial Code.

Section 9. Indemnification and Contribution.

(a) Indemnification of the Underwriter. The Company will indemnify and hold harmless the Underwriter against any losses, claims, damages or liabilities, to which the Underwriter may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) (i) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, any Issuer Free Writing Prospectus or any “issuer information” filed or required to be filed pursuant to Rule 433(d) under the Act, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, and will reimburse the Underwriter for any legal or other expenses reasonably incurred by the Underwriter in connection with investigating or defending any such action or claim as such expenses are incurred; provided, however, that the Company shall not be liable in any such case to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission made in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or

supplement thereto, or any Issuer Free Writing Prospectus, in reliance upon and in conformity with written information furnished to the Company by the Underwriter specifically for use therein or (ii) result from the gross negligence, willful misconduct or bad faith of the Auction Agent.

(b) Indemnification of the Company. The Underwriter will indemnify and hold harmless the Company against any losses, claims, damages or liabilities to which the Company may become subject, under the Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon an untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any amendment or supplement thereto, or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading, in each case to the extent, but only to the extent, that such untrue statement or alleged untrue statement or omission or alleged omission was made in the Registration Statement, the Basic Prospectus, any Preliminary Prospectus, the Pricing Prospectus or the Prospectus, or any such amendment or supplement thereto, or any Issuer Free Writing Prospectus, in reliance upon and in conformity with written information furnished to the Company by the Underwriter specifically for use therein; and will reimburse the Company for any legal or other expenses reasonably incurred by the Company in connection with investigating or defending any such action or claim as such expenses are incurred.

(c) Notice and Procedures. Promptly after receipt by an indemnified party under subsection (a) or (b) above of notice of the commencement of any action, such indemnified party shall, if a claim in respect thereof is to be made against the indemnifying party under such subsection, notify the indemnifying party in writing of the commencement thereof; but the omission so to notify the indemnifying party shall not relieve it from any liability which it may have to any indemnified party otherwise than under such subsection except and then only to the extent such indemnifying party is materially prejudiced thereby. In case any such action shall be brought against any indemnified party and it shall notify the indemnifying party of the commencement thereof, the indemnifying party shall be entitled to participate therein and, to the extent that it shall wish, to assume the defense thereof, with counsel satisfactory to such indemnified party (who shall not, except with the consent of the indemnified party, be counsel to the indemnifying party), and, after notice from the indemnifying party to such indemnified party of its election so to assume the defense thereof, the indemnifying party shall not be liable to such indemnified party under such subsection for any legal expenses of other counsel or any other expenses, in each case subsequently incurred by such indemnified party, in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the written consent of the indemnified party, effect the settlement or compromise of, or consent to the entry of any judgment with respect to, any pending or threatened action or claim in respect of which indemnification or contribution may be sought hereunder (whether or not the indemnified party is an actual or potential party to such action or claim) unless such settlement, compromise or judgment (i) includes an unconditional release of the indemnified party from all liability arising out of such action 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) Contribution. If the indemnification provided for in this Section 9 is unavailable to or insufficient to hold harmless an indemnified party under subsection (a) or (b) above in respect of any losses, claims, damages or liabilities (or actions in respect thereof) referred to therein, then the indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriter on the other from the offering of the Securities to which such loss, claim, damage or liability (or action in respect thereof) relates. If, however, the allocation provided by the immediately

preceding sentence is not permitted by applicable law or if the indemnified party failed to give the notice required under subsection (c) above, then the indemnifying party shall contribute to such amount paid or payable by the indemnified party in such proportion as is appropriate to reflect not only such relative benefits but also the relative fault of the Company on the one hand and the Underwriter on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities (or actions in respect thereof), as well as any other relevant equitable considerations. The relative benefits received by the Company on the one hand and the Underwriter on the other shall be deemed to be in the same proportion as the total net proceeds from the offering (before deducting expenses) received by the Company bear to the total underwriting discounts and commissions received by the Underwriter, in each case as set forth in the table on the cover page of the Prospectus. The relative fault shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Company on the one hand or the Underwriter on the other and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. The Company and the Underwriter agree that it would not be just and equitable if contribution pursuant to this subsection (d) were determined by pro rata allocation or by any other method of allocation which does not take account of the equitable considerations referred to above in this subsection (d). The amount paid or payable by an indemnified party as a result of the losses, claims, damages or liabilities (or actions in respect thereof) referred to above in this subsection (d) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any such action or claim. Notwithstanding the provisions of this subsection (d), the Underwriter shall not be required to contribute any amount in excess of the amount by which the total price at which the Depositary Shares underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which the Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

(e) Limitation on Liability. The obligations of the Company under this Section 9 shall be in addition to any liability which the Company may otherwise have and shall extend, upon the same terms and conditions, to the directors and officers of the Underwriter and to each person, if any, who controls the Underwriter within the meaning of the Act and the Exchange Act, each broker-dealer affiliate of the Underwriter and each officer and director of such affiliate; and the obligations of the Underwriter under this Section 9 shall be in addition to any liability which the Underwriter may otherwise have and shall extend, upon the same terms and conditions, to each officer and director of the Company and to each person, if any, who controls the Company within the meaning of the Act.

Section 10. [Intentionally omitted.]

Section 11. Survival of Provisions. The respective indemnities, agreements, representations, warranties and other statements of the Company and the Underwriter, as set forth in this Agreement or made by or on behalf of them, respectively, pursuant to this Agreement, shall remain in full force and effect, regardless of any investigation (or any statement as to the results thereof) made by or on behalf of the Underwriter or any controlling person of the Underwriter, or the Company, or any officer or director or controlling person of the Company, and shall survive delivery of and payment for the Depositary Shares.

Section 12. Reimbursement of Underwriter’s Expenses. If for any reason, the Depositary Shares are not delivered by or on behalf of the Company as provided herein, the Company will reimburse the Underwriter for all out of pocket expenses, including fees and disbursements of counsel, reasonably incurred by the Underwriter in making preparations for the purchase, sale and delivery of the Depositary Shares, but the Company shall then be under no further liability to the Underwriter except as provided in Sections 7 and 9 hereof.

Section 13. [Intentionally omitted.]

Section 14. Notices. All statements, requests, notices and agreements hereunder shall be in writing, and if to the Underwriter shall be delivered or sent by mail, telex or facsimile transmission to Deutsche Bank Securities Inc., 00 Xxxx Xxxxxx, Xxx Xxxx, Xxx Xxxx 00000, Attention: DCM Syndicate, Facsimile: 000-000-0000, with a copy to the attention of the General Counsel, 36th Floor, Facsimile: 000 000-0000; and if to the Company shall be delivered or sent by mail, telex or facsimile transmission to the address of the Company set forth in the Registration Statement, Attention: General Counsel; provided, however, that any notice to the Underwriter pursuant to Section 9(c) hereof shall be delivered or sent by mail, telex or facsimile transmission to the Underwriter at its address set forth in its Underwriter Questionnaire, or telex constituting such Questionnaire, which address will be supplied to the Company by the Underwriter upon request. Any such statements, requests, notices or agreements shall take effect upon receipt thereof.

In accordance with the requirements of the USA Patriot Act (Title III of Pub. L. 107-56 (signed into law October 26, 2001)), the Underwriter is required to obtain, verify and record information that identifies their clients, including the Company, which information may include the name and address of their clients, as well as other information that will allow the Underwriter to properly identify their clients.

Section 15. Parties. This Agreement shall be binding upon, and inure solely to the benefit of, the Underwriter, the Company and, to the extent provided in Sections 9 and 11 hereof, the officers and directors of the Company or the Underwriter and each person who controls the Company or the Underwriter, and their respective heirs, executors, administrators, successors and assigns, and no other person shall acquire or have any right under or by virtue of this Agreement. No purchaser of any of the Depositary Shares from the Underwriter shall be deemed a successor or assign by reason merely of such purchase.

Section 16. Time and Business Day. Time shall be of the essence of this Agreement. As used herein, the term “business day” shall mean any day when the Commission’s office in Washington, D.C. is open for business.

Section 17. No Advisory or Fiduciary Relationship. The Company acknowledges and agrees that (i) the purchase and sale of the Depositary Shares pursuant to this Agreement is an arm’s-length commercial transaction between the Company, on the one hand, and the Underwriter, on the other, (ii) in connection therewith and with the process leading to such transaction the Underwriter is acting solely as a principal and not as the agent or fiduciary of the Company, (iii) the Underwriter has not assumed an advisory or fiduciary responsibility in favor of the Company with respect to the offering contemplated hereby or the process leading thereto (irrespective of whether the Underwriter has advised or is currently advising the Company on other matters) or any other obligation to the Company except the obligations expressly set forth in this Agreement and (iv) the Company has consulted its own legal and financial advisors to the extent it deemed appropriate. The Company agrees that it will not claim that the Underwriter has rendered advisory services of any nature or respect, or owes a fiduciary or similar duty to the Company, in connection with such transaction or the process leading thereto.

Section 18. Prior Agreements. This Agreement supersedes all prior agreements and understandings (whether written or oral) between the Company and the Underwriter with respect to the subject matter hereof.

Section 19. Governing Law. THIS AGREEMENT AND ANY MATTERS RELATED TO THIS TRANSACTION SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

Section 20. Counterparts. This Agreement may be executed by any one or more of the parties hereto in any number of counterparts, each of which shall be deemed to be an original, but all such respective counterparts shall together constitute one and the same instrument. This Agreement and any counterparts thereof may be delivered by any party by facsimile or other electronic transmission.

Section 21. Severability. The invalidity or unenforceability of any section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other section, paragraph, or provision hereof. If any section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.

Section 22. Disclosure of Tax Matters. Notwithstanding anything herein to the contrary, the Company is authorized to disclose to any persons the U.S. federal and state income tax treatment and tax structure of the potential transaction and all materials of any kind (including tax opinions and other tax analyses) provided to the Company relating to that treatment and structure, without the Underwriter imposing any limitation of any kind. However, any information relating to the tax treatment and tax structure shall remain confidential (and the foregoing sentence shall not apply) to the extent necessary to enable any person to comply with securities laws. For this purpose, “tax structure” is limited to any facts that may be relevant to that treatment.

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 Underwriter and the Company in accordance with its terms.


Very truly yours,

ZIONS BANCORPORATION

By:		/s/ Xxxxxxxxx X. Xxxx
		Name: Xxxxxxxxx X. Xxxx
		Title: SVP and Controller

Accepted as of the date hereof:

DEUTSCHE BANK SECURITIES INC.


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

By:		/s/ Xxxx Xxxxxxxxx
		Name: Xxxx Xxxxxxxxx
		Title: Director

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ZIONS BANCORPORATION UNDERWRITING AGREEMENT 5,750,000 Depositary Shares Each Representing a 1/40th Interest In a Share of Series F Fixed-Rate Non-Cumulative Perpetual Preferred Stock

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