Exhibit 1.1

22,000,000 Shares

AK Steel Holding Corporation

Common Stock

UNDERWRITING AGREEMENT

November 14, 2012

J.P. M ORGAN S ECURITIES LLC,

C REDIT S UISSE S ECURITIES (USA) LLC,

As Representatives of the Several Underwriters,

c/o J.P. Morgan Securities LLC

Dear Sirs:

1. Introductory . AK Steel Holding Corporation, a Delaware corporation (“ Company ”), agrees with the several Underwriters named in Schedule A hereto (“ Underwriters ”) to issue and sell to the several Underwriters 22,000,000 shares (“ Firm Securities ”) of its common stock, par value $0.01 per share (“ Securities ”), and also proposes to issue and sell to the Underwriters, at the option of the Underwriters, an aggregate of not more than 3,300,000 additional shares (“ Optional Securities ”) of its Securities as set forth below. The Firm Securities and the Optional Securities are herein collectively called the “ Offered Securities ”.

2. Representations and Warranties of the Company . The Company represents and warrants to, and agrees with, the several Underwriters that:

(a) Filing and Effectiveness of Registration Statement; Certain Defined Terms . The Company has filed with the Commission a registration statement on Form S-3 (No. 333-166303) and post-effective amendment No. 1 thereto, including a related prospectus or prospectuses, covering the registration of the Offered Securities under the Act, which has become effective. “ Registration Statement ” at any particular time means such registration statement in the form then filed with the Commission, including any amendment thereto, any document incorporated by reference therein and all 430B Information and all 430C Information with respect to such registration statement, that in any case has not been superseded or modified. “ Registration Statement ” without reference to a time means the Registration Statement as of the Effective Time. For purposes of this definition, 430B Information shall be considered to be included in the Registration Statement as of the time specified in Rule 430B.

For purposes of this Agreement:

“ 430B Information ” means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430B(e) or retroactively deemed to be a part of the Registration Statement pursuant to Rule 430B(f).

“ 430C Information ” means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430C.

“ Act ” means the Securities Act of 1933, as amended.

“ Applicable Time ” means 10:30 pm (Eastern time) on the date of this Agreement.

“ Closing Date ” has the meaning defined in Section 3 hereof.

“ Commission ” means the Securities and Exchange Commission.

“ Effective Time ” of the Registration Statement relating to the Offered Securities means the time of the first contract of sale for the Offered Securities.

“ Exchange Act ” means the Securities Exchange Act of 1934.

“ FCPA ” means the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder.

“ Final Prospectus ” means the Statutory Prospectus that discloses the public offering price, other 430B Information and other final terms of the Offered Securities and otherwise satisfies Section 10(a) of the Act.

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

“ Issuer Free Writing Prospectus ” means any “issuer free writing prospectus,” as defined in Rule 433, relating to the Offered Securities 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).

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

“ Rules and Regulations ” means the rules and regulations of the Commission.

“ Securities Laws ” means, collectively, the Sarbanes-Oxley Act of 2002 (“ Sarbanes-Oxley ”), the Act, the Exchange Act, the Rules and Regulations, the auditing principles, rules, standards and practices applicable to auditors of “issuers” (as defined in Sarbanes-Oxley) promulgated or approved by the Public Company Accounting Oversight Board and, as applicable, the rules of the New York Stock Exchange and the NASDAQ Stock Market (“ Exchange Rules ”).

“ Statutory Prospectus ” with reference to any particular time means the prospectus relating to the Offered Securities that is included in the Registration Statement immediately prior to that time, including all 430B Information and all 430C Information with respect to the Registration Statement. For purposes of the foregoing definition, 430B Information shall be considered to be included in the Statutory Prospectus only as of the actual time that form of prospectus (including a prospectus supplement) is filed with the Commission pursuant to Rule 424(b) and not retroactively.

“ Subsidiary ” means each direct and indirect subsidiary of the Company.

Unless otherwise specified, a reference to a “rule” is to the indicated rule under the Act.

(b)  Compliance with Securities Act Requirements . (i) (A) At the time the Registration Statement initially became effective, (B) at the time of each amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether by post-effective amendment, incorporated report or form of prospectus), (C) at the Effective Time relating to the Offered Securities and (D) on the Closing Date, the Registration Statement conformed and will conform in all material respects to the requirements of the Act and the Rules and Regulations and did not and will not include any untrue statement of a material fact or omit to state any material fact required to be

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stated therein or necessary to make the statements therein not misleading and (ii) (A) on its date, (B) at the time of filing the Final Prospectus pursuant to Rule 424(b) and (C) on the Closing Date, the Final Prospectus will conform in all material respects to the requirements of the Act and the Rules and Regulations, and will not include any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading. The preceding sentence does not apply to statements in or omissions from any such document based upon written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information is that described as such in Section 8(b) hereof.

(c) Automatic Shelf Registration Statement . (i)  Well-Known Seasoned Issuer Status . (A) At the time of initial filing 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 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 (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 Offered Securities in reliance on the exemption of Rule 163, the Company was a “well known seasoned issuer” as defined in Rule 405, including not having been an “ineligible issuer” as defined in Rule 405.

(ii) Effectiveness of Automatic Shelf Registration Statement . The Registration Statement is an “automatic shelf registration statement,” as defined in Rule 405, that initially became effective within three years of the date of this Agreement.

(iii) Eligibility to Use Automatic Shelf Registration Form . The Company has not received from the Commission any notice pursuant to Rule 401(g)(2) objecting to use of the automatic shelf registration statement form. If at any time when Offered Securities remain unsold by the Underwriters the Company receives from the Commission a notice pursuant to Rule 401(g)(2) or otherwise ceases to be eligible to use the automatic shelf registration statement form and such Underwriters are required to deliver a prospectus for the Offered Securities, the Company will (i) promptly notify the Representatives, (ii) promptly file a new registration statement or post-effective amendment on the proper form relating to the Offered Securities, in a form satisfactory to the Representatives, (iii) use its reasonable best efforts to cause such registration statement or post-effective amendment to be declared effective as soon as practicable, and (iv) promptly notify the Representatives of such effectiveness. The Company will take all other action necessary or appropriate to permit the public offering and sale of the Offered Securities to continue as contemplated in the registration statement that was the subject of the Rule 401(g)(2) notice or for which the Company has otherwise become ineligible. References herein to the Registration Statement shall include such new registration statement or post-effective amendment, as the case may be.

(iv) Filing Fees . The Company has paid or shall pay the required Commission filing fees relating to the Offered Securities within the time required by Rule 456(b)(1) without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r).

(d) General Disclosure Package . As of the Applicable Time, neither (i) the General Use Issuer Free Writing Prospectus(es) issued at or prior to the Applicable Time and the preliminary prospectus supplement, dated November 13, 2012 including the base prospectus, dated November 13, 2012 (which is the most recent Statutory Prospectus distributed to investors generally), and the other information, if any, stated in Schedule B to this Agreement to be included in the General Disclosure Package, all considered together (collectively, the “ General Disclosure Package ”), nor (ii) any individual Limited Use Issuer Free Writing Prospectus, when considered together with the General Disclosure Package, included any untrue statement of a material fact or omitted to state

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any material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The preceding sentence does not apply to statements in or omissions from any Statutory Prospectus or any Issuer Free Writing Prospectus in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter consists of the information described as such in Section 8(b) hereof.

(e) Issuer Free Writing Prospectuses . Each Issuer Free Writing Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Offered Securities or until any earlier date that the Company notified or notifies the Representatives as described in the next sentence, did not, does not and will not include any information that conflicted, conflicts or will conflict with the information then contained in the Registration Statement. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information then contained in the Registration Statement or as a result of which such Issuer Free Writing Prospectus, if republished immediately following such event or development, 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 under which they were made, not misleading, (i) the Company has promptly notified or will promptly notify the Representatives and (ii) the Company has promptly amended or will promptly amend or supplement such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

(f) Good standing of the Company . The Company has been duly incorporated and is validly existing as a corporation and in good standing under the laws of the State of Delaware, with power and authority (corporate and other) to own its properties and conduct its business as described in the General Disclosure Package; and the Company is duly qualified to do business as a foreign corporation in good standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires such qualification, except where the failure to be so qualified would not, individually or in the aggregate, reasonably be expected to result in a material adverse effect on the condition (financial or otherwise), results of operations, business, properties or prospects of the Company and the Subsidiaries taken as a whole (“ Material Adverse Effect ”).

(g) Subsidiaries . Each Subsidiary has been duly incorporated and is existing and 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 General Disclosure Package; and each Subsidiary is duly qualified to do business as a foreign corporation in good standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires such qualification, except where the failure to be so qualified would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect; all of the issued and outstanding capital stock of each Subsidiary has been duly authorized and validly issued and is fully paid and nonassessable; and except as disclosed in the General Disclosure Package and the Final Prospectus, all of the capital stock of each Subsidiary is owned by the Company, directly or indirectly, free from liens, encumbrances and defects.

(h) Offered Securities . The Offered Securities and all other outstanding shares of capital stock of the Company have been duly authorized; the authorized equity capitalization of the Company is as set forth in the General Disclosure Package and the Final Prospectus; all outstanding shares of capital stock of the Company are, and, when the Offered Securities have been delivered and paid for pursuant to this Agreement on each Closing Date, such Offered Securities will have been, validly issued, fully paid and nonassessable, will conform in all material respects to the information in the General Disclosure Package and to the description of such Offered Securities contained in the Final Prospectus; the stockholders of the Company have no

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preemptive rights with respect to the Securities; and none of the outstanding shares of capital stock of the Company have been issued in violation of any preemptive or similar rights of any security holder.

(i) No Finder’s Fee . Except as disclosed in the General Disclosure Package and the Final Prospectus, there are no contracts, agreements or understandings between the Company and any person that would give rise to a valid claim against the Company or any Underwriter for a brokerage commission, finder’s fee or other like payment in connection with this offering.

(j) Registration Rights . Except as disclosed in the General Disclosure Package, there are no contracts, agreements or understandings between the Company and any person granting such person the right to require the Company to file a registration statement under the Act with respect to any securities of the Company owned or to be owned by such person or to require the Company to include such securities in the securities registered pursuant to a Registration Statement or in any securities being registered pursuant to any other registration statement filed by the Company under the Act (collectively, “ registration rights ”), and any person to whom the Company has granted registration rights has agreed not to exercise such rights until after the expiration of the 90-day period referred to in Section 5 hereof.

(k) Listing . The Offered Securities have been approved for listing on the New York Stock Exchange, subject to notice of issuance.

(l) Absence of Further Requirements . No consent, approval, authorization, or order of, or filing or registration with, any person (including any governmental agency or body or any court) is required for the consummation of the transactions contemplated by this Agreement in connection with the offering, issuance and sale of the Offered Securities by the Company, except (i) such as have been obtained, or made and such as may be required under state securities laws and (ii) for such consents, approvals, authorizations, orders, filings or registrations that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect or a material adverse effect on the ability of the Company to consummate the transactions contemplated hereby.

(m) Title to Property . Except as disclosed in the General Disclosure Package and the Final Prospectus, the Company and the Subsidiaries have good and marketable title to all real properties and all other properties and assets owned by them, in each case free from liens, charges, encumbrances and defects except where the failure to have such title or the existence of such lien, charge, encumbrance or defect would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect, and except as disclosed in the General Disclosure Package and the Final Prospectus, the Company and the Subsidiaries hold any leased real or personal property under valid and enforceable leases with no terms or provisions that would materially interfere with the use made or to be made thereof by them.

(n) Absence of Defaults and Conflicts Resulting from Transaction . The execution, delivery and performance of this Agreement and the issuance and sale of the Offered Securities will not result in a breach or violation of any of the terms and provisions of, or constitute a default or a Debt Repayment Triggering Event (as defined below) under, or result in the imposition of any lien, charge or encumbrance upon any property or assets of the Company or any of the Subsidiaries pursuant to (i) the charter or by-laws of the Company or any of the Subsidiaries, (ii) any statute, rule, regulation or order of any governmental agency or body or any court, domestic or foreign, having jurisdiction over the Company or any of the Subsidiaries or any of their properties, or (iii) any agreement or instrument to which the Company or any of the Subsidiaries is a party or by which the Company or any of the Subsidiaries is bound or to which any of the properties of the Company or any of the Subsidiaries is subject, except, in the case of (iii) above, for such conflicts, breaches, violations, liens, charges or encumbrances that would not, individually or in

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the aggregate, have a Material Adverse Effect; a “ Debt Repayment Triggering Event ” means any event or condition that gives, or with the giving of notice or lapse of time would give, 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 of the Subsidiaries.

(o) Absence of Existing Defaults and Conflicts . Neither the Company nor any of the Subsidiaries is in violation of its respective charter or by-laws or in default (or with the giving of notice or lapse of time would be in default) under any existing obligation, agreement, covenant or condition contained in any indenture, loan agreement, mortgage, lease or other agreement or instrument to which any of them is a party or by which any of them is bound or to which any of the properties of any of them is subject, except such defaults that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect.

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

(q) Possession of Licenses and Permits . The Company and the Subsidiaries possess, and are in compliance with the terms of, all adequate certificates, authorizations, franchises, licenses and permits (“ Licenses ”) necessary or material to the conduct of the business now conducted or proposed in the General Disclosure Package to be conducted by them and have not received any notice of proceedings relating to the revocation or modification of any Licenses that, if determined adversely to the Company or any of the Subsidiaries, would individually or in the aggregate reasonably be expected to have a Material Adverse Effect.

(r) Absence of Labor Dispute . Except as disclosed in the General Disclosure Package and the Final Prospectus, no labor dispute with the employees of the Company or any of the Subsidiaries exists or, to the knowledge of the Company, is threatened that would, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect.

(s) Possession of Intellectual Property . The Company and the Subsidiaries own, possess or can acquire on reasonable terms, adequate trademarks, trade names and other rights to inventions, know-how, patents, copyrights, confidential information and other intellectual property (collectively, “ intellectual property rights ”) necessary to conduct the business now operated by them, or presently employed by them, and have not received any notice of infringement of or conflict with asserted rights of others with respect to any intellectual property rights that, if determined adversely to the Company or any of the Subsidiaries, would, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(t) Environmental Laws . Except as disclosed in the General Disclosure Package and the Final Prospectus, neither the Company nor any of the Subsidiaries is in violation of, or has any liability under, any federal, state, local or non-U.S. statute, law, rule, regulation, ordinance, code, other requirement or rule of law (including common law), or decision or order of any domestic or foreign governmental agency, governmental body or court, relating to pollution, to the use, handling, transportation, treatment, storage, discharge, disposal or release of Hazardous Substances, to the protection or restoration of the environment or natural resources (including biota), to health and safety as such relates to exposure to Hazardous Substances, and to natural resource damages (collectively, “ Environmental Laws ”), (ii) neither the Company nor any of the Subsidiaries owns, occupies, operates or uses any real property contaminated with Hazardous Substances, (iii) neither the Company nor any of the Subsidiaries is conducting or funding any investigation, remediation, remedial action or monitoring of actual or suspected Hazardous Substances in the environment, (iv) neither the Company nor any of the Subsidiaries is liable or, to its knowledge, allegedly liable for any release or threatened release of Hazardous Substances, including at any off-site treatment, storage or disposal site, (v) neither the Company nor any of the

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Subsidiaries is subject to any claim by any governmental agency or governmental body or person relating to Environmental Laws or Hazardous Substances, and (vi) the Company and the Subsidiaries have received and are in compliance with all, and have no liability under any, permits, licenses, authorizations, identification numbers or other approvals required under applicable Environmental Laws to conduct their respective businesses, except in each case covered by clauses (i) – (vi) such as would not individually or in the aggregate reasonably be expected to have a Material Adverse Effect; (b) to the knowledge of the Company or the Guarantor there are no facts or circumstances that would reasonably be expected to result in a violation of, liability under, or claim pursuant to, any Environmental Law that would reasonably be expected to have a Material Adverse Effect; and (c) to the knowledge of the Company or the Guarantor there are no Environmental Laws or requirements proposed for adoption or implementation under any Environmental Law that would reasonably be expected to have a Material Adverse Effect. For purposes of this subsection, “ Hazardous Substances ” means (A) petroleum and petroleum products, by-products or breakdown products, radioactive materials, asbestos-containing materials, polychlorinated biphenyls and mold, and (B) any other chemical, material or substance defined or regulated as toxic or hazardous or as a pollutant, contaminant or waste under Environmental Laws.

(u) Accurate Disclosure . The statements in the General Disclosure Package and the Final Prospectus under the heading “Description of Capital Stock” and “Description of Certain Indebtedness” insofar as such statements summarize legal matters, agreements, documents or proceedings discussed therein, are accurate and fair summaries of such legal matters, agreements, documents or proceedings and present the information required to be shown.

(v) Accurate Tax Disclosure. To the extent that the statements set forth in the General Disclosure Package and the Final Prospectus under the caption “U.S. Federal Income Tax Consequences to Non-U.S. Holders” purport to describe certain provisions of the United States federal tax laws referred to therein, such summaries fairly describe, in all material respects, such provisions.

(w) Absence of Manipulation . The Company has not taken, directly or indirectly, any action that is designed to or that has constituted or that would reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Offered Securities.

(x) Statistical and Market-Related Data . Any third-party statistical and market-related data included or incorporated by reference in the General Disclosure Package or in the Final Prospectus are based on or derived from sources that the Company believes to be reliable and accurate.

(y) Internal Controls and Compliance with the Sarbanes-Oxley Act . Except as set forth in the General Disclosure Package and the Final Prospectus, the Company, the Subsidiaries and the Company’s Board of Directors (the “ Board ”) are in compliance with Sarbanes-Oxley and all applicable Exchange Rules in all material respects. The Company maintains a system of internal controls over financial reporting (as defined in Rule 13a-15-f of the Exchange Act) (collectively, “ Internal Controls ”) that comply with the Exchange Act and are sufficient to provide reasonable assurances that (i) transactions are executed in accordance with management’s general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with U.S. General Accepted Accounting Principles and to maintain accountability for assets, (iii) access to assets is permitted only in accordance with management’s general or specific authorization , (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences and (v) the interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Final Prospectus fairly presents the information called for in all material respects and is prepared in

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accordance with the Commission’s rules and guidelines applicable thereto. The Internal Controls are, or upon consummation of the offering of the Offered Securities will be, overseen by the Audit Committee (the “ Audit Committee ”) of the Board in accordance with Exchange Rules. The Company has not publicly disclosed or reported to the Audit Committee or the Board, and within the next 90 days the Company does not reasonably expect to publicly disclose or report to the Audit Committee or the Board, a significant deficiency, material weakness, change in Internal Controls or fraud involving management or other employees who have a significant role in Internal Controls (each, an “ Internal Control Event ”), any violation of, or failure to comply with, the Securities Laws, or any matter which, if determined adversely, would reasonably be expected to have a Material Adverse Effect.

(z) Disclosure Controls. Except as set forth in the General Disclosure Package and the Final Prospectus, Parent, the Company and the Subsidiaries maintain an effective system of “disclosure controls and procedures” (as defined in Rule 13a-15(e) of the Exchange Act) that is designed to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, including controls and procedures designed to ensure that such information is accumulated and communicated to the Company’s management as appropriate to allow timely decisions regarding required disclosure. The Company and the Subsidiaries have carried out evaluations of the effectiveness of their disclosure controls and procedures as required by Rule 13a-15 of the Exchange Act.

(aa) Litigation . Except as disclosed in the General Disclosure Package and the Final Prospectus, there are no pending actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency or body, domestic or foreign) against or affecting the Company or any of the Subsidiaries or any of their respective properties that, if determined adversely to the Company or any of the Subsidiaries, would individually or in the aggregate, reasonably be expected to have a Material Adverse Effect, or would materially and adversely affect the ability of the Company to perform its obligations under this Agreement, or which are otherwise material in the context of the sale of the Offered Securities; and to the Company’s knowledge, no such actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency or body, domestic or foreign) are threatened or contemplated.

(bb) Financial Statements . The financial statements included in the Registration Statement, the General Disclosure Package and the Final Prospectus present fairly the financial position of the Company and its consolidated subsidiaries as of the dates shown and their results of operations and cash flows for the periods shown, and, except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Final Prospectus, such financial statements have been prepared in conformity with the generally accepted accounting principles in the United States applied on a consistent basis. The interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Final Prospectus fairly presents the information called for in all material respects and has been prepared in accordance with the Commission’s rules and guidelines applicable thereto.

(cc) No Material Adverse Change in Business . Except as disclosed in the General Disclosure Package and the Final Prospectus, since the end of the period covered by the latest audited financial statements included in the General Disclosure Package and the Final Prospectus (i) there has been no change, in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company and the Subsidiaries, taken as a whole that is material and adverse, (ii) except as disclosed in or contemplated by the General Disclosure Package and the Final Prospectus, there has been no dividend or distribution of any kind declared, paid or made by the Company on any class of its capital stock and (iii) except as disclosed in or contemplated by the General Disclosure Package, there has been no material adverse change in the capital stock, short-term indebtedness, long-term indebtedness, net current assets or net assets of the Company.

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(dd) Investment Company Act . The Company is not and, after giving effect to the offering and sale of the Offered Securities and the application of the proceeds thereof as described in the General Disclosure Package and the Final Prospectus, will not be an “investment company” as defined in the Investment Company Act of 1940 (the “ Investment Company Act ”).

(ee) Ratings . No “nationally recognized statistical rating organization” as such term is defined in Section 3(a)(62) under the Exchange Act (i) has imposed (or has informed the Company that it is considering imposing) any condition (financial or otherwise) on the Company’s retaining any rating assigned to the Company or AK Steel Corporation or any securities of the Company or AK Steel Corporation or (ii) has indicated to the Company that it is considering any of the actions described in Section 7(c)(ii) hereof.

(ff)  Foreign Corrupt Practices Act. None of the Company or, to the best of the Company’s knowledge, any of the Subsidiaries or their respective directors, officers, agents, employees or affiliates is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the FCPA, including, without limitation, making use of the mails or any means or instrumentality of interstate commerce corruptly in furtherance of an offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value 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 and the Company and, to the best of the Company’s knowledge, the Subsidiaries and affiliates have conducted their businesses in compliance with the FCPA and have devised or instituted policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith. In addition, none of the Company or, to the best of the Company’s knowledge, any of the Subsidiaries or their respective directors, officers, agents, employees or affiliates is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the U.K. Bribery Act 2010.

(gg)  Compliance with Money Laundering Laws. To the best of the Company’s knowledge, the operations of the Company and the Subsidiaries are and have been conducted at all times in compliance in all material respects 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, the rules and regulations thereunder and any related or similar rules, regulations or guidelines issued, administered or enforced by any governmental agency.

(hh)  Compliance with OFAC. None of the Company or any of the Subsidiaries nor, to the knowledge of the Company, any director, officer, agent, employee or affiliate of the Company or any of the Subsidiaries 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.

(ii)  Taxes. The Company and the Subsidiaries have filed all federal, state, local and non-U.S. tax returns that are required to be filed or have requested extensions thereof (except in any case in which the failure so to file would not reasonably be expected to have a Material Adverse Effect); and, except as set forth in the General Disclosure Package and the Final Prospectus, the Company and the Subsidiaries have paid all taxes (including any assessments, fines or penalties)

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required to be paid by them, except for any such taxes, assessments, fines or penalties currently being contested in good faith or as would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(jj)  Insurance. The Company and the Subsidiaries are insured by insurers with appropriately rated claims paying abilities against such losses and risks and in such amounts as are prudent and customary for the businesses in which they are engaged; all policies of insurance insuring the Company or any of the Subsidiaries or their respective businesses, assets, employees, officers and directors are in full force and effect; the Company and the Subsidiaries are in compliance with the terms of such policies and instruments in all material respects; and there are no claims by the Company or any of the Subsidiaries under any such policy or instrument as to which any insurance company is denying liability or defending under a reservation of rights clause; none of the Company or any such Subsidiary has been refused any insurance coverage sought or applied for; and none of the Company or any such Subsidiary has any reason to believe that it will not be able to renew its 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 reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the General Disclosure Package and the Final Prospectus.

3. Purchase, Sale and Delivery of Offered Securities . On the basis of the representations, warranties and agreements and subject to the terms and conditions set forth herein, the Company agrees to sell to the several Underwriters, and each of the Underwriters agrees, severally and not jointly, to purchase from the Company, at a purchase price of $3.82 per share, the respective number of shares of Firm Securities set forth opposite the names of the Underwriters in Schedule A hereto.

The Company will deliver the Firm Securities to or as instructed by the Representatives for the accounts of the several Underwriters in a form reasonably acceptable to the Representatives against payment of the purchase price by the Underwriters in Federal (same day) funds by wire transfer to an account at a bank acceptable to the Representatives drawn to the order of the Company at the office of Davis Polk & Wardwell LLP, 450 Lexington Avenue, New York, NY 10017 at 9:00 A.M., New York time, on November 20, 2012, or at such other time not later than seven full business days thereafter as the Representatives and the Company determine, such time being herein referred to as the “ First Closing Date ”. For purposes of Rule 15c6-1 under the Exchange Act, the First Closing Date (if later than the otherwise applicable settlement date) shall be the settlement date for payment of funds and delivery of securities for all the Offered Securities sold pursuant to the offering.

In addition, upon written notice from the Representatives given to the Company from time to time not more than 30 days subsequent to the date of the Final Prospectus, the Underwriters, on the basis of the representations, warranties and agreements set forth herein and subject to the conditions set forth herein, may purchase all or less than all of the Optional Securities at the purchase price per Security to be paid for the Firm Securities less an amount per share equal to any dividends or distributions declared by the Company and payable on the Firm Securities but not payable on the Option Securities. The Company agrees to sell to the Underwriters the number of shares of Optional Securities specified in such notice and the Underwriters agree, severally and not jointly, to purchase such Optional Securities. Such Optional Securities shall be purchased for the account of each Underwriter in the same proportion as the number of shares of Firm Securities set forth opposite such Underwriter’s name bears to the total number of shares of Firm Securities (or such number increased as set forth in Section 9 hereof) (subject to adjustment by the Representatives to eliminate fractions) and may be purchased by the Underwriters only for the purpose of covering over-allotments made in connection with the sale of the Firm Securities. No Optional Securities shall be sold or delivered unless the Firm Securities previously have been, or simultaneously are, sold and delivered. The right to purchase the Optional Securities or any portion thereof may be exercised from time to time and to the extent not previously exercised may be surrendered and terminated at any time upon notice by the Representatives to the Company.

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Each time for the delivery of and payment for the Optional Securities, being herein referred to as an “ Optional Closing Date ”, which may be the First Closing Date (the First Closing Date and each Optional Closing Date, if any, being sometimes referred to as a “ Closing Date ”), shall be determined by the Representatives but shall be at least one business day and not later than ten full business days after written notice of election to purchase Optional Securities is given. The Company will deliver the Optional Securities being purchased on each Optional Closing Date to or as instructed by the Representatives for the accounts of the several Underwriters in a form reasonably acceptable to the Representatives against payment of the purchase price therefor in Federal (same day) funds by wire transfer to an account at a bank acceptable to the Representatives drawn to the order of the Company, at the above office of Davis Polk & Wardwell LLP.

4. Offering by Underwriters . It is understood that the several Underwriters propose to offer the Offered Securities for sale to the public as set forth in the Final Prospectus.

5. Certain Agreements of the Company . The Company agrees with the several Underwriters that:

(a) Filing of Prospectuses. The Company has filed or will file each Statutory Prospectus (including the Final Prospectus) pursuant to and in accordance with Rule 424(b)(2) of the Act (or, if applicable and consented to by the Representatives, subparagraph (5)) not later than the second business day following the earlier of the date it is first used or the execution and delivery of this Agreement. The Company has complied and will comply with Rule 433 of the Act.

(b) Filing of Amendments; Response to Commission Requests . The Company will promptly advise the Representatives of any proposal to amend or supplement the Registration Statement or any Statutory Prospectus at any time and will offer the Representatives a reasonable opportunity to comment on any such amendment or supplement; and the Company will also advise the Representatives promptly of (i) the filing of any such amendment or supplement, (ii) any request by the Commission or its staff for any amendment to the Registration Statement, for any supplement to any Statutory Prospectus or for any additional information, (iii) the institution by the Commission of any stop order proceedings in respect of the Registration Statement or the threatening of any proceeding for that purpose, and (iv) the receipt by the Company of any notification with respect to the suspension of the qualification of the Offered Securities in any jurisdiction or the institution or threatening of any proceedings for such purpose. The Company will use its reasonable best efforts to prevent the issuance of any such stop order or the suspension of any such qualification and, if issued, to obtain as soon as possible the withdrawal thereof.

(c) Continued Compliance with Securities Laws . (i) If, at any time when a prospectus relating to the Offered Securities is (or but for the exemption in Rule 172 would be) required to be delivered under the Act by any Underwriter or dealer, any event occurs as a result of which the Final Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the Registration Statement or supplement the Final Prospectus to comply with the Act, the Company will promptly notify the Representatives of such event and will promptly prepare and file with the Commission and furnish, at its own expense, to the Underwriters and the dealers and any other dealers upon request of the Representatives, an amendment or supplement which will correct such statement or omission or an amendment which will effect such compliance; and (ii) if at any time prior to the filing of the Final Prospectus, any event occurs as a result of which the General Disclosure Package as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the General Disclosure Package to comply with law, the Company will promptly notify the Representatives of such event and will promptly prepare and file with the Commission and furnish, at its own expense, to the Underwriters and the dealers and

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any other dealers upon request of the Representatives, a supplement that will correct such statement or omission or an amendment that will effect such compliance. Neither the Representatives’ consent to, nor the Underwriters’ delivery of, any such amendment or supplement shall constitute a waiver of any of the conditions set forth in Section 7 hereof.

(d) Rule 158. As soon as practicable, but not later than 16 months, after the date of this Agreement, the Company will make generally available to its securityholders an earnings statement covering a period of at least 12 months beginning after the date of this Agreement and satisfying the provisions of Section 11(a) of the Act and Rule 158.

(e) Furnishing of Prospectuses . The Company will furnish to the Representatives copies of the Registration Statement, including all exhibits, any Statutory Prospectus, the Final Prospectus and all amendments and supplements to such documents, in each case as soon as available and in such quantities as the Representatives reasonably request. The Company will pay the expenses of printing and distributing to the Underwriters all such documents.

(f) Blue Sky Compliance . The Company will qualify the Offered Securities for offer and sale under the laws of such jurisdictions as the Representatives shall reasonably request and will continue such qualifications in effect so long as required for distribution of the Securities; provided that the Company shall not be required to (i) qualify as a foreign corporation or other entity or as a dealer in securities in any such jurisdiction where it would not otherwise be required to so qualify, (ii) file any general consent to service of process in any such jurisdiction or (iii) subject itself to taxation in any such jurisdiction if it is not otherwise so subject.

(g) Reporting Requirements . The Company, during the period when the Final Prospectus is required to be delivered under the Act, will file all documents required to be filed with the Commission pursuant to the Exchange Act within the time periods required by the Exchange Act.

(h) Payment of Expenses . The Company will pay all expenses incident to the performance of its obligations under this Agreement, including but not limited to (i) any filing fees and other expenses (including fees and disbursements of counsel to the Underwriters) incurred in connection with qualification of the Offered Securities for sale under the laws of such jurisdictions as the Representatives designate and the preparation and printing of memoranda relating thereto, (ii) the filing fees for FINRA’s review of the offering of the Offered Securities, and the reasonable fees and disbursements of counsel to the Underwriters in connection with compliance with FINRA’s rules and regulations, (iii) any fees charged by investment rating agencies for the rating of the Offered Securities, (iv) costs and expenses relating to investor presentations or any “road show” in connection with the offering and sale of the Offered Securities, any travel expenses of the Company’s officers and employees and any other expenses of the Company including the chartering of airplanes, (v) fees and expenses incident to listing the Offered Securities on the New York Stock Exchange, (vi) fees and expenses in connection with the registration of the Offered Securities under the Exchange Act, and (vii) expenses incurred in distributing preliminary prospectuses and the Final Prospectus (including any amendments and supplements thereto) to the Underwriters and for expenses incurred for preparing, printing and distributing any Issuer Free Writing Prospectuses to investors or prospective investors. It is understood, however, that, except as provided in subclauses (i) and (ii) of this clause (h), and Sections 8 and 10 hereof, the Underwriters will pay all of their own costs and expenses, including the fees of their counsel, transfer taxes on resale of any of the Securities and any advertising expenses connected with any offers they may make.

(i) Use of Proceeds . The Company will use the net proceeds received in connection with this offering in the manner described in the “Use of Proceeds” section of the General Disclosure Package and the Final Prospectus and, except as disclosed in the General Disclosure Package and the Final Prospectus, the Company does not intend to use any of the proceeds from the sale of the Offered Securities hereunder to repay any outstanding debt owed to any affiliate of any Underwriter.

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(j) Absence of Manipulation . The Company will not take, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, stabilization or manipulation of the price of any securities of the Company to facilitate the sale or resale of the Offered Securities.

(k) Restriction on Sale of Securities . For a period of 90 days after the date hereof, the Company will not (i) 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 to purchase, or otherwise transfer or dispose of, directly or indirectly, or file with the Commission a registration statement under the Securities Act relating to, any shares of Securities or any securities convertible into or exercisable or exchangeable for Securities, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing, or (ii) enter into any swap or other agreement that transfers, in whole or in part, any of the economic consequences of ownership of Securities or any such other securities, whether any such transaction described in clause (i) or (ii) above is to be settled by delivery of Securities or such other securities, in cash or otherwise, without the prior written consent of the Representatives, other than (w) the Offered Securities to be sold hereunder, (x) the Exchangeable Senior Notes and underlying shares of Securities to be sold concurrently with the Offered Securities, (y) any shares of Securities of the Company, options to purchase such shares of Securities, restricted stock or restricted stock units granted pursuant to the Company’s management incentive plans in effect on the date hereof and (z) shares of Securities of the Company issued upon the exercise of options or vesting of restricted stock or restricted stock units pursuant to the terms of the Company’s management incentive plans in effect on the date hereof.

6. Free Writing Prospectuses . (a)  Issuer Free Writing Prospectuses. The Company represents and agrees that, unless it obtains the prior consent of the Representatives, and 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 Offered 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. Any such free writing prospectus consented to by the Company and the Representatives is hereinafter referred to as a “ Permitted Free Writing Prospectus .” The Company represents that it has treated and agrees that it will treat each Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and has complied and will comply with the requirements of Rules 164 and 433 applicable to any Permitted Free Writing Prospectus, including timely Commission filing where required, legending and record keeping.

(b) Term Sheets . The Company will prepare a final term sheet relating to the Offered Securities, containing only information that describes the final terms of the Offered Securities and otherwise in a form consented to by the Representatives, and will file such final term sheet within the period required by Rule 433(d)(5)(ii) following the date such final terms have been established for all classes of the offering of the Offered Securities. Any such final term sheet is an Issuer Free Writing Prospectus and a Permitted Free Writing Prospectus for purposes of this Agreement. The Company and the Representatives also consent to the use by an Underwriter of a free writing prospectus that contains only (i)(x) information describing the preliminary terms of the Offered Securities or their offering or (y) information that describes the final terms of the Offered Securities or their offering and that is included in the final term sheet of the Company contemplated in the first sentence of this subsection or (ii) other information that is not “issuer information” as defined in Rule 433, it being understood that any such free writing prospectus referred to in clause (i) or (ii) above shall not be an Issuer Free Writing Prospectus for purposes of this Agreement.

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7. Conditions of the Obligations of the Underwriters . The obligations of the several Underwriters to purchase and pay for the Firm Securities on the First Closing Date and the Optional Securities to be purchased on each Optional Closing Date will be subject to the accuracy of the representations and warranties of the Company herein (as though made on such Closing Date), to the accuracy of the statements of Company officers made pursuant to the provisions hereof, to the performance by the Company of its obligations hereunder and to the following additional conditions precedent:

(a)  Accountants’ Comfort Letter . The Representatives shall have received letters, dated, respectively, the date hereof and each Closing Date, of Deloitte & Touche LLP confirming that they are a registered public accounting firm and independent public accountants within the meaning of the Securities Laws and substantially in the form agreed to with the Representatives (except that, in any letter dated a Closing Date, the specified date referred to in the letter shall be a date no more than three days prior to such Closing Date).

(b)  Filing of Prospectus. The Final Prospectus shall have been filed with the Commission in accordance with the Rules and Regulations and Section 5(a) hereof. No stop order suspending the effectiveness of the Registration Statement or of any part thereof shall have been issued and no proceedings for that purpose shall have been instituted or, to the knowledge of the Company or any Underwriter, shall be contemplated by the Commission.

(c)  No Material Adverse Change . Subsequent to the Applicable Time, there shall not have occurred (i) any change in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company and the Subsidiaries taken as a whole which, in the judgment of the Representatives, is material and adverse and makes it impractical or inadvisable to proceed with the offering, sale or delivery of the Offered Securities; (ii) any downgrading in the rating of any debt securities of the Company or AK Steel Corporation by any “nationally recognized statistical rating organization” (as defined in Section 3(a)(62) under the Exchange Act), or any public announcement that any such organization has under surveillance or review its rating of any debt securities of the Company or AK Steel Corporation (other than an announcement with positive implications of a possible upgrading, and no implication of a possible downgrading, of such rating); (iii) any change in U.S. or international financial, political or economic conditions or currency exchange rates or exchange controls the effect of which is such as to make it, in the judgment of the Representatives, impractical to proceed with the offering, sale or delivery or to enforce contracts for the sale of the Offered Securities, whether in the primary market or in respect of dealings in the secondary market; (iv) any suspension or material limitation of trading in securities generally on the New York Stock Exchange, or any setting of minimum or maximum prices for trading on such exchange; (v) or any suspension of trading of any securities of the Company on any exchange or in the over-the-counter market; (vi) any banking moratorium declared by any U.S. federal or New York authorities; (vii) any major disruption of settlements of securities, payment, or clearance services in the United States or any other country where such securities are listed or (viii) any attack on, outbreak or escalation of hostilities or act of terrorism involving the United States, any declaration of war by the U.S. Congress or any other national or international calamity or emergency if, in the judgment of the Representatives, the effect of any such attack, outbreak, escalation, act, declaration, calamity or emergency is such as to make it impractical or inadvisable to proceed with the offering, sale or delivery of the Offered Securities or to enforce contracts for the sale of the Offered Securities.

(d)  Opinion of Counsel for Company . The Representatives shall have received an opinion, dated such Closing Date, of Weil, Gotshal & Manges LLP, counsel for the Company substantially in the form attached hereto as Exhibit A.

(e) Opinion of Counsel for Underwriters. The Representatives shall have received from Davis Polk & Wardwell LLP, counsel for the Underwriters, such opinion or opinions, dated such Closing Date, with respect to such matters as the Representatives may require, and the Company shall have furnished to such counsel such documents as they request for the purpose of enabling them to pass upon such matters.

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(f)  Officer’s Certificate . The Representatives shall have received a certificate, dated such Closing Date, of an executive officer of the Company and a principal financial or accounting officer of the Company in which such officers shall state that: the representations and warranties of the Company in this Agreement are true and correct; the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied hereunder at or prior to such Closing Date; no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or, to the best of their knowledge and after reasonable investigation, are contemplated by the Commission; and, subsequent to the date of the most recent financial statements in the General Disclosure Package, there has been no material adverse change in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company and the Subsidiaries taken as a whole except as set forth in the General Disclosure Package or as described in such certificate.

(g) Lock-Up Agreements. The “lock-up” agreements, each substantially in the form of Exhibit B hereto, between you and the officers and directors of the Company listed on Schedule C hereto relating to sales and certain other dispositions of shares of the Securities or certain other securities, delivered to you on or before the date hereof, shall be full force and effect on such Closing Date.

The Company will furnish the Representatives with such conformed copies of such opinions, certificates, letters and documents as the Representatives reasonably request. The Representatives may waive on behalf of the Underwriters compliance with any conditions to the obligations of the Underwriters hereunder, whether in respect of an Optional Closing Date or otherwise.

8. Indemnification and Contribution . (a)  Indemnification of Underwriters . The Company will indemnify and hold harmless each Underwriter, its partners, members, directors, officers, employees, agents, affiliates and each person, if any, who controls such Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an “ Indemnified Party ”), against any and all losses, claims, damages or liabilities, joint or several, to which such Indemnified Party may become subject, under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon (i) any untrue statement or alleged untrue statement of any material fact contained in any part of the Registration Statement at any time, or arise out of or are based upon the omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, or (ii) any untrue statement or alleged untrue statement of any material fact contained in any part of any Statutory Prospectus as of any time, the Final Prospectus or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or alleged omission of a material fact necessary to make the statements therein, in each case in light of the circumstances under which they were made, not misleading, and will reimburse each Indemnified Party for any legal or other expenses reasonably incurred by such Indemnified Party in connection with investigating or defending against any loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not such Indemnified Party is a party thereto), whether threatened or commenced, and in connection with the enforcement of this provision with respect to any of the above as such expenses are incurred; provided, however, that the Company will 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 in or omission or alleged omission from any of such documents in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter consists of the information described as such in subsection (b) below.

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(b) Indemnification of Company . Each Underwriter will severally and not jointly indemnify and hold harmless the Company, each of its directors and each of its officers who signs a Registration Statement and each person, if any, who controls the Company within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an “ Underwriter Indemnified Party ”), against any losses, claims, damages or liabilities to which such Underwriter Indemnified Party may become subject, under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon (i) any untrue statement or alleged untrue statement of any material fact contained in any part of the Registration Statement at any time, or arise out of or are based upon the omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, or (ii) any untrue statement or alleged untrue statement of any material fact contained in any part of any Statutory Prospectus as of any time, the Final Prospectus, or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or alleged omission of a material fact necessary to make the statements therein, in each case in light of the circumstances under which they were made, 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 reliance upon and in conformity with written information furnished to the Company by such Underwriter through the Representatives specifically for use therein, and will reimburse any legal or other expenses reasonably incurred by such Underwriter Indemnified Party in connection with investigating or defending against any such loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not such Underwriter Indemnified Party is a party thereto), whether threatened or commenced, based upon any such untrue statement or omission, or any such alleged untrue statement or omission as such expenses are incurred, it being understood and agreed that the only such information furnished by any Underwriter consists of the following information in the Final Prospectus furnished on behalf of each Underwriter: the concession figure appearing in the third paragraph under the caption “Underwriting; Conflicts of Interest” and the information contained in the twelfth, thirteenth and fourteenth paragraphs under the caption “Underwriting; Conflicts of Interest” relating to stabilizing activities.

(c) Actions against Parties; Notification . Promptly after receipt by an indemnified party under this Section of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Section 8, notify the indemnifying party of the commencement thereof; but the failure to notify the indemnifying party shall not relieve it from any liability that it may have under subsection (a) or (b) above except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided further that the failure to notify the indemnifying party shall not relieve it from any liability that it may have to an indemnified party otherwise than under subsection (a) or (b) above. In case any such action is brought against any indemnified party and it notifies the indemnifying party of the commencement thereof, the indemnifying party will be entitled to participate therein and, to the extent that it may wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably 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 will not be liable to such indemnified party under this Section for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened action in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party unless such settlement (i) includes an unconditional release of such indemnified party from all liability on any claims that are the subject matter of such action 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 an indemnified party.

(d) Contribution . If the indemnification provided for in this Section is unavailable or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages or liabilities referred to herein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of the losses, claims, damages or liabilities referred to herein (i) in such proportion as is

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appropriate to reflect the relative benefits received by the Company on the one hand and the Underwriters on the other from the offering of the Offered Securities or (ii) if the allocation provided by clause (i) above 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 in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities 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 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 Underwriters. 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 or the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. The amount paid by an indemnified party as a result of the losses, claims, damages or liabilities referred to in the first sentence of 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 action or claim which is the subject of this subsection (d). Notwithstanding the provisions of this subsection (d), no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such 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. The Underwriters’ obligations in this subsection (d) to contribute are several in proportion to their respective underwriting obligations and not joint. The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 8(d) 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 in this Section 8(d).

9. Default of Underwriters . If any Underwriter or Underwriters default in their obligations to purchase Offered Securities hereunder on either the First or any Optional Closing Date and the aggregate number of shares of Offered Securities that such defaulting Underwriter or Underwriters agreed but failed to purchase does not exceed 10% of the total number of shares of Offered Securities that the Underwriters are obligated to purchase on such Closing Date, the Representatives may make arrangements satisfactory to the Company for the purchase of such Offered Securities by other persons, including any of the Underwriters, but if no such arrangements are made by such Closing Date, the non-defaulting Underwriters shall be obligated severally, in proportion to their respective commitments hereunder, to purchase the Offered Securities that such defaulting Underwriters agreed but failed to purchase on such Closing Date. If any Underwriter or Underwriters so default and the aggregate number of shares of Offered Securities with respect to which such default or defaults occur exceeds 10% of the total number of shares of Offered Securities that the Underwriters are obligated to purchase on such Closing Date and arrangements satisfactory to the Representatives and the Company for the purchase of such Offered Securities by other persons are not made within 36 hours after such default, this Agreement will terminate without liability on the part of any non-defaulting Underwriter or the Company, except as provided in Section 10 (provided that if such default occurs with respect to Optional Securities after the First Closing Date, this Agreement will not terminate as to the Firm Securities or any Optional Securities purchased prior to such termination). As used in this Agreement, the term “Underwriter” includes any person substituted for an Underwriter under this Section. Nothing herein will relieve a defaulting Underwriter from liability for its default.

10. Survival of Certain Representations and Obligations . The respective indemnities, agreements, representations, warranties and other statements of the Company or its officers and of the several Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation, or statement as to the results thereof, made by or on behalf of any Underwriter, the Company or any of their respective representatives, officers or directors or any controlling

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person, and will survive delivery of and payment for the Offered Securities. If the purchase of the Offered Securities by the Underwriters is not consummated for any reason other than solely because of the termination of this Agreement pursuant to Section 9 hereof, the Company will reimburse the Underwriters for all out-of-pocket expenses (including fees and disbursements of counsel) reasonably incurred by them in connection with the offering of the Offered Securities, and the respective obligations of the Company and the Underwriters pursuant to Section 8 hereof shall remain in effect. For the avoidance of doubt, if this Agreement is terminated pursuant to Section 9 hereof, the respective obligations of the Company and the Underwriters pursuant to Section 8 hereof shall remain in effect. In addition, if any Offered Securities have been purchased hereunder, the representations and warranties in Section 2 and all obligations under Section 5 shall also remain in effect.

11. Notices . All communications hereunder will be in writing and, if sent to the Underwriters, will be mailed, delivered or telegraphed and confirmed to the Representatives, c/o J.P. Morgan Securities LLC, 383 Madison Avenue, New York, NY 10179 and Credit Suisse Securities (USA) LLC, Eleven Madison Avenue, New York, N.Y. 10010-3629, Attention: LCD-IBD, or, if sent to the Company, will be mailed, delivered or telegraphed and confirmed to it at AK Steel Holding Corporation, 9227 Centre Point Drive, West Chester, OH 45069, Attention: General Counsel; provided, however, that any notice to an Underwriter pursuant to Section 8 will be mailed, delivered or telegraphed and confirmed to such Underwriter.

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

13. Successors . This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers and directors and controlling persons referred to in Section 8, and no other person will have any right or obligation hereunder.

14. Representation of Underwriters . The Representatives will act for the several Underwriters in connection with this financing, and any action under this Agreement taken by the Representatives jointly will be binding upon all the Underwriters.

15. 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.

16. Absence of Fiduciary Relationship. The Company acknowledges and agrees that:

(a) No Other Relationship . The Underwriters have been retained solely to act as underwriters in connection with the sale of Offered Securities and that no fiduciary, advisory or agency relationship between the Company and the Underwriters has been created in respect of any of the transactions contemplated by this Agreement or the Final Prospectus, irrespective of whether the Underwriters have advised or is advising the Company on other matters;

(b) Arms’ Length Negotiations . The price of the Offered Securities set forth in this Agreement was established by the Company following discussions and arms-length negotiations with the Underwriters and the Company is capable of evaluating and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated by this Agreement;

(c) Absence of Obligation to Disclose . The Company has been advised that the Underwriters and their affiliates are engaged in a broad range of transactions which may involve interests that differ from those of the Company and that the Underwriters have no obligation to disclose such interests and transactions to the Company by virtue of any fiduciary, advisory or agency relationship; and

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(d) Waiver . The Company waives, to the fullest extent permitted by law, any claims it may have against the Underwriters for breach of fiduciary duty or alleged breach of fiduciary duty and agrees that the Underwriters shall have no liability (whether direct or indirect) to the Company in respect of such a fiduciary duty claim or to any person asserting a fiduciary duty claim on behalf of or in right of the Company, including stockholders, employees or creditors of the Company.

17. Applicable Law . This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

The Company hereby submits to the non-exclusive jurisdiction of the Federal and state courts in the Borough of Manhattan in The City of New York in any suit or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. The Company irrevocably and unconditionally waives any objection to the laying of venue of any suit or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby in Federal and state courts in the Borough of Manhattan in The City of New York and irrevocably and unconditionally waives and agrees not to plead or claim in any such court that any such suit or proceeding in any such court has been brought in an inconvenient forum.

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If the foregoing is in accordance with the Representatives’ understanding of our agreement, kindly sign and return to the Company one of the counterparts hereof, whereupon it will become a binding agreement between the Company and the several Underwriters in accordance with its terms.

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SCHEDULE B

“General Use Issuer Free Writing Prospectus” includes each of the following documents:

1. Final Term Sheet, dated November 14, 2012, a copy of which is attached hereto.

The following information is also included in the General Disclosure Package:

1. None.

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SCHEDULE C

Exhibit 1.2

$150,000,000

AK Steel Corporation

5.00% Exchangeable Senior Notes due 2019

UNDERWRITING AGREEMENT

November 14, 2012

C REDIT S UISSE S ECURITIES (USA) LLC,

J.P. M ORGAN S ECURITIES LLC,

As Representatives of the Several Underwriters,

c/o Credit Suisse Securities (USA) LLC,

Eleven Madison Avenue,

New York, N.Y. 10010-3629

J.P. Morgan Securities LLC

383 Madison Avenue

New York, NY 10179, and

Dear Sirs:

1. Introductory . AK Steel Corporation, a Delaware corporation (“ Company ”) and AK Steel Holding Corporation (the “ Guarantor ” or “ Parent ”), agree with the several Underwriters named in Schedule A hereto (“ Underwriters ”) to issue and sell to the several Underwriters $150,000,000 principal amount (“ Firm Securities ”) of its 5.00% Exchangeable Senior Notes due 2019 (“ Securities ”) and also agrees to issue and sell to the Underwriters, at the option of the Underwriters, an aggregate of not more than $22,500,000 additional principal amount (“ Optional Securities ”) of its Securities as set forth below, all to be issued under a base indenture, dated as of May 11, 2010 (the “ Base Indenture ”), as supplemented by a supplemental indenture, dated as of the First Closing Date (the “ Supplemental Indenture ” and, together with the Base Indenture, the “ Indenture ”), among the Company, the Guarantor and U.S. Bank National Association, as Trustee. The Firm Securities and the Optional Securities are herein collectively called the “ Offered Securities ”.

The Offered Securities will be guaranteed on an unsecured senior basis by the Guarantor (such guarantee, the “ Guarantee ”).

The Company hereby confirms its engagement of Morgan Stanley & Co. LLC (“Morgan Stanley”) as, and Morgan Stanley hereby confirms its agreement with the Company to render services as, the “qualified independent underwriter,” within the meaning of Rule 5121(f)(12) of the Financial Industry Regulatory Authority, Inc. (“ FINRA ”) with respect to the offering and sale of the Offered Securities. Morgan Stanley, solely in its capacity as the qualified independent underwriter and not otherwise, is referred to herein as the “ QIU .”

2. Representations and Warranties of the Company and the Guarantor . The Company and the Guarantor jointly and severally represent and warrant to, and agree with, the several Underwriters that:

(a) Filing and Effectiveness of Registration Statement; Certain Defined Terms . Parent has filed with the Commission a registration statement on Form S-3 (No. 333-166303) and post-effective amendment No. 1 thereto, including a related prospectus or prospectuses, covering the registration of the Offered Securities under the Act, which has become effective. “ Registration

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Statement ” at any particular time means such registration statement in the form then filed with the Commission, including any amendment thereto, any document incorporated by reference therein and all 430B Information and all 430C Information with respect to such registration statement, that in any case has not been superseded or modified. “ Registration Statement ” without reference to a time means the Registration Statement as of the Effective Time. For purposes of this definition, 430B Information shall be considered to be included in the Registration Statement as of the time specified in Rule 430B.

For purposes of this Agreement:

“ 430B Information ” means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430B(e) or retroactively deemed to be a part of the Registration Statement pursuant to Rule 430B(f).

“ 430C Information ” means information included in a prospectus then deemed to be a part of the Registration Statement pursuant to Rule 430C.

“ Act ” means the Securities Act of 1933, as amended.

“ Applicable Time ” means 10:30 pm (Eastern time) on the date of this Agreement.

“ Closing Date ” has the meaning defined in Section 3 hereof.

“ Commission ” means the Securities and Exchange Commission.

“ Effective Time ” of the Registration Statement relating to the Offered Securities means the time of the first contract of sale for the Offered Securities.

“ Exchange Act ” means the Securities Exchange Act of 1934.

“ FCPA ” means the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder.

“ Final Prospectus ” means the Statutory Prospectus that discloses the public offering price, other 430B Information and other final terms of the Offered Securities and otherwise satisfies Section 10(a) of the Act.

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

“ Issuer Free Writing Prospectus ” means any “issuer free writing prospectus,” as defined in Rule 433, relating to the Offered Securities 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).

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

“ Rules and Regulations ” means the rules and regulations of the Commission.

“ Securities Laws ” means, collectively, the Sarbanes-Oxley Act of 2002 (“ Sarbanes-Oxley ”), the Act, the Exchange Act, the Trust Indenture Act, the Rules and Regulations, the auditing principles, rules, standards and practices applicable to auditors of “issuers” (as defined in Sarbanes-Oxley) promulgated or approved by the Public Company Accounting Oversight Board and, as applicable, the rules of the New York Stock Exchange and the NASDAQ Stock Market (“ Exchange Rules ”).

“ Statutory Prospectus ” with reference to any particular time means the prospectus relating to the Offered Securities that is included in the Registration Statement immediately prior to that time, including all 430B Information and all 430C Information with respect to the Registration Statement. For purposes of the foregoing definition, 430B Information shall be considered to be included in the Statutory Prospectus only as of the actual time that form of prospectus (including a prospectus supplement) is filed with the Commission pursuant to Rule 424(b) and not retroactively.

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“ Subsidiary ” means each direct and indirect subsidiary of Parent.

“ Trust Indenture Act ” means the Trust Indenture Act of 1939.

“ Underlying Shares ” shall mean any shares of common stock, $0.01 par value per share (the “ Common Stock ”), of Parent for which the Securities are exchangeable.

Unless otherwise specified, a reference to a “rule” is to the indicated rule under the Act.

(b)  Compliance with Securities Act Requirements . (i) (A) At the time the Registration Statement initially became effective, (B) at the time of each amendment thereto for the purposes of complying with Section 10(a)(3) of the Act (whether by post-effective amendment, incorporated report or form of prospectus), (C) at the Effective Time relating to the Offered Securities and (D) on the Closing Date, the Registration Statement conformed and will conform in all material respects to the requirements of the Act, the Trust Indenture Act and the Rules and Regulations and did not and will not include any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading and (ii) (A) on its date, (B) at the time of filing the Final Prospectus pursuant to Rule 424(b) and (C) on the Closing Date, the Final Prospectus will conform in all material respects to the requirements of the Act and the Rules and Regulations, and will not include any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not misleading. The preceding sentence does not apply to statements in or omissions from any such document based upon written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information is that described as such in Section 8(b) hereof.

(c) Automatic Shelf Registration Statement . (i)  Well-Known Seasoned Issuer Status . (A) At the time of initial filing 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 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 (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 Offered Securities in reliance on the exemption of Rule 163, Parent was a “well known seasoned issuer” as defined in Rule 405, including not having been an “ineligible issuer” as defined in Rule 405.

(ii) Effectiveness of Automatic Shelf Registration Statement . The Registration Statement is an “automatic shelf registration statement,” as defined in Rule 405, that initially became effective within three years of the date of this Agreement.

(iii) Eligibility to Use Automatic Shelf Registration Form . Parent has not received from the Commission any notice pursuant to Rule 401(g)(2) objecting to use of the automatic shelf registration statement form. If at any time when Offered Securities remain unsold by the Underwriters Parent receives from the Commission a notice pursuant to Rule 401(g)(2) or otherwise ceases to be eligible to use the automatic shelf registration statement form and such Underwriters are required to deliver a prospectus for the Offered Securities, Parent will (i) promptly notify the Representatives, (ii) promptly file a new registration statement or post-effective amendment on the proper form relating to the Offered Securities, in a form satisfactory to the Representatives, (iii) use its reasonable best efforts to cause such registration statement or post-effective amendment to be declared effective as soon as practicable, and (iv) promptly notify the Representatives of such effectiveness. Parent will take all other action necessary or appropriate to permit the public offering and sale of the Offered Securities to continue as contemplated in the registration statement that was the subject of the Rule 401(g)(2) notice or for which Parent has otherwise become ineligible. References herein to the Registration Statement shall include such new registration statement or post-effective amendment, as the case may be.

(iv) Filing Fees . Parent has paid or shall pay the required Commission filing fees relating to the Offered Securities within the time required by Rule 456(b)(1) without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r).

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(d) General Disclosure Package . As of the Applicable Time, neither (i) the General Use Issuer Free Writing Prospectus(es) issued at or prior to the Applicable Time and the preliminary prospectus supplement, dated November 13, 2012, including the base prospectus, dated November 13, 2012 (which is the most recent Statutory Prospectus distributed to investors generally), and the other information, if any, stated in Schedule B to this Agreement to be included in the General Disclosure Package, all considered together (collectively, the “ General Disclosure Package ”), nor (ii) any individual Limited Use Issuer Free Writing Prospectus, when considered together with the General Disclosure Package, included any untrue statement of a material fact or omitted 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. The preceding sentence does not apply to statements in or omissions from any Statutory Prospectus or any Issuer Free Writing Prospectus in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter consists of the information described as such in Section 8(b) hereof.

(e) Issuer Free Writing Prospectuses . Each Issuer Free Writing Prospectus, as of its issue date and at all subsequent times through the completion of the public offer and sale of the Offered Securities or until any earlier date that the Company notified or notifies the Representatives as described in the next sentence, did not, does not and will not include any information that conflicted, conflicts or will conflict with the information then contained in the Registration Statement. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information then contained in the Registration Statement or as a result of which such Issuer Free Writing Prospectus, if republished immediately following such event or development, 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 under which they were made, not misleading, (i) the Company has promptly notified or will promptly notify the Representatives and (ii) the Company has promptly amended or will promptly amend or supplement such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

(f) Good standing of the Company and Parent . Each of the Company and Parent has been duly incorporated and is validly existing as a corporation and in good standing under the laws of the State of Delaware, with power and authority (corporate and other) to own its properties and conduct its business as described in the General Disclosure Package; and each of the Company and Parent is duly qualified to do business as a foreign corporation in good standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires such qualification, except where the failure to be so qualified would not, individually or in the aggregate, reasonably be expected to result in a material adverse effect on the condition (financial or otherwise), results of operations, business, properties or prospects of the Company, Parent and the Subsidiaries taken as a whole (“ Material Adverse Effect ”).

(g) Subsidiaries . Each Subsidiary has been duly incorporated and is existing and 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 General Disclosure Package; and each Subsidiary is duly qualified to do business as a foreign corporation in good standing in all other jurisdictions in which its ownership or lease of property or the conduct of its business requires such qualification, except where the failure to be so qualified

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would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect; all of the issued and outstanding capital stock of each Subsidiary has been duly authorized and validly issued and is fully paid and nonassessable; and except as disclosed in the General Disclosure Package and the Final Prospectus, all of the capital stock of each Subsidiary is owned by Parent, directly or indirectly, free from liens, encumbrances and defects.

(h) Execution and Delivery of Indenture; Offered Securities; Guarantee; Underlying Shares . The Indenture has been duly authorized by the Company and the Guarantor and has been duly qualified under the Trust Indenture Act and the Base Indenture has been duly executed and delivered; as of each Closing Date, the Indenture will constitute a valid and legally binding obligation of the Company and the Guarantor, enforceable against each of them in accordance with its terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and similar laws of general applicability relating to or affecting creditors’ rights and to general equity principles (collectively, the “ Enforceability Exceptions ”); the Offered Securities have been duly authorized by the Company and, when the Offered Securities are delivered and paid for pursuant to this Agreement on each Closing Date, the Indenture having been duly executed and delivered, such Offered Securities will have been duly executed, authenticated, issued and delivered, will be exchangeable at the option of the holders thereof into cash or a combination of cash and Underlying Shares in accordance with the terms of the Indenture, will conform in all material respects to the information in the General Disclosure Package and to the description of such Offered Securities contained in the Final Prospectus, and such Offered Securities will constitute valid and legally binding obligations of the Company, enforceable against the Company in accordance with their terms, subject to the Enforceability Exceptions; the Guarantee has been duly authorized by the Guarantor and, when the Offered Securities are executed, authenticated, issued and delivered as provided in the Indenture and paid for as provided herein the Guarantee will have been duly executed and delivered by the Guarantor, will conform in all material respects to the information in the General Disclosure Package and to the description of such Guarantee contained in the Final Prospectus and will constitute a valid and legally binding obligation of the Guarantor, enforceable against the Guarantor in accordance with its terms, subject to the Enforceability Exceptions; a number of Underlying Shares equal to the initial conversion rate (calculated after giving effect to the maximum number of shares that may be added to the conversion rate in connection with any “make-whole fundamental change” (as defined in the Final Prospectus)) set forth in the Final Prospectus, multiplied by the aggregate principal amount of Offered Securities (expressed in thousands) have been duly authorized and reserved for issuance upon such exchange and conform to the information in the General Disclosure Package and to the description of such Underlying Shares contained in the Final Prospectus; the authorized equity capitalization of Parent is as set forth in the General Disclosure Package; all outstanding shares of capital stock of Parent are, and when issued upon exchange the Underlying Shares will be, validly issued, fully paid and nonassessable; the stockholders of Parent have no preemptive rights with respect to the Offered Securities or the Underlying Shares, and none of the outstanding shares of capital stock of Parent have been issued in violation of any preemptive or similar rights of any security holder.

(i) No Finder’s Fee . Except as disclosed in the General Disclosure Package and the Final Prospectus, there are no contracts, agreements or understandings between the Company or the Guarantor and any person that would give rise to a valid claim against the Company, the Guarantor or any Underwriter for a brokerage commission, finder’s fee or other like payment in connection with this offering.

(j) Registration Rights . Except as disclosed in the General Disclosure Package, there are no contracts, agreements or understandings between Parent and any person granting such person the right to require Parent to file a registration statement under the Act with respect to any securities of Parent owned or to be owned by such person or to require Parent to include such securities in the securities registered pursuant to a Registration Statement or in any securities being registered pursuant to any other registration statement filed by Parent under the Act (collectively, “ registration rights ”), and any person to whom Parent has granted registration rights has agreed not to exercise such rights until after the expiration of the 90-day period referred to in Section 5 hereof.

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(k) Listing . A number of Underlying Shares equal to the initial conversion rate (calculated after giving effect to the maximum number of shares that may be added to the conversion rate in connection with any “make-whole fundamental change” (as defined in the Final Prospectus)) set forth in the Final Prospectus, multiplied by the aggregate principal amount of Offered Securities (expressed in thousands) have been approved for listing on the New York Stock Exchange, subject to notice of issuance.

(l) Absence of Further Requirements . No consent, approval, authorization, or order of, or filing or registration with, any person (including any governmental agency or body or any court) is required for the consummation of the transactions contemplated by this Agreement or the Indenture in connection with the offering, issuance and sale of the Offered Securities and the Underlying Shares by the Company or the sale of the Guarantee by the Guarantor, except (i) such as have been obtained, or made and such as may be required under state securities laws and (ii) for such consents approvals, authorizations, orders, filings or registrations that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect or a material adverse effect on the ability of the Company and the Guarantor to consummate the transactions contemplated hereby.

(m) Title to Property . Except as disclosed in the General Disclosure Package and the Final Prospectus, the Company, Parent and the Subsidiaries have good and marketable title to all real properties and all other properties and assets owned by them, in each case free from liens, charges, encumbrances and defects except where the failure to have such title or the existence of such lien, charge, encumbrance or defect would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect, and except as disclosed in the General Disclosure Package and the Final Prospectus, the Company, Parent and the Subsidiaries hold any leased real or personal property under valid and enforceable leases with no terms or provisions that would materially interfere with the use made or to be made thereof by them.

(n) Absence of Defaults and Conflicts Resulting from Transaction . The execution, delivery and performance of the Indenture and this Agreement, the issuance and sale of the Offered Securities, any Underlying Shares and the Guarantees and compliance with the terms and provisions thereof will not result in a breach or violation of any of the terms and provisions of, or constitute a default or a Debt Repayment Triggering Event (as defined below) under, or result in the imposition of any lien, charge or encumbrance upon any property or assets of the Company, Parent or any of the Subsidiaries pursuant to (i) the charter or by-laws of the Company, Parent or any of the Subsidiaries, (ii) any statute, rule, regulation or order of any governmental agency or body or any court, domestic or foreign, having jurisdiction over the Company, Parent or any of the Subsidiaries or any of their properties, or (iii) any agreement or instrument to which the Company, Parent or any of the Subsidiaries is a party or by which the Company, Parent or any of the Subsidiaries is bound or to which any of the properties of the Company, Parent or any of the Subsidiaries is subject, except, in the case of (iii) above, for such conflicts, breaches, violations, liens, charges or encumbrances that would not, individually or in the aggregate, have a Material Adverse Effect; a “ Debt Repayment Triggering Event ” means any event or condition that gives, or with the giving of notice or lapse of time would give, 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, Parent or any of the Subsidiaries.

(o) Absence of Existing Defaults and Conflicts . Neither the Company, Parent nor any of the Subsidiaries is in violation of its respective charter or by-laws or in default (or with the giving of notice or lapse of time would be in default) under any existing obligation, agreement, covenant or condition contained in any indenture, loan agreement, mortgage, lease or other agreement or instrument to which any of them is a party or by which any of them is bound or to which any of the properties of any of them is subject, except such defaults that would not, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect.

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

(q) Possession of Licenses and Permits . The Company, Parent and the Subsidiaries possess, and are in compliance with the terms of, all adequate certificates, authorizations, franchises, licenses and permits (“ Licenses ”) necessary or material to the conduct of the business now conducted or proposed in the General Disclosure Package to be conducted by them and have not received any notice of proceedings relating to the revocation or modification of any Licenses that, if determined adversely to the Company, Parent or any of the Subsidiaries, would individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(r) Absence of Labor Dispute . Except as disclosed in the General Disclosure Package and Final Prospectus, no labor dispute with the employees of the Company, Parent or any of the Subsidiaries exists or, to the knowledge of the Company or Guarantor, is threatened that would, individually or in the aggregate, reasonably be expected to result in a Material Adverse Effect.

(s) Possession of Intellectual Property . The Company, Parent and the Subsidiaries own, possess or can acquire on reasonable terms, adequate trademarks, trade names and other rights to inventions, know-how, patents, copyrights, confidential information and other intellectual property (collectively, “ intellectual property rights ”) necessary to conduct the business now operated by them, or presently employed by them, and have not received any notice of infringement of or conflict with asserted rights of others with respect to any intellectual property rights that, if determined adversely to the Company, Parent or any of the Subsidiaries, would individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(t) Environmental Laws . Except as disclosed in the General Disclosure Package and the Final Prospectus, (a)(i) none of the Company, Parent or any of the Subsidiaries is in violation of, or has any liability under, any federal, state, local or non-U.S. statute, law, rule, regulation, ordinance, code, other requirement or rule of law (including common law), or decision or order of any domestic or foreign governmental agency, governmental body or court, relating to pollution, to the use, handling, transportation, treatment, storage, discharge, disposal or release of Hazardous Substances, to the protection or restoration of the environment or natural resources (including biota), to health and safety as such relates to exposure to Hazardous Substances, and to natural resource damages (collectively, “ Environmental Laws ”), (ii) none of the Company, Parent or any of the Subsidiaries owns, occupies, operates or uses any real property contaminated with Hazardous Substances, (iii) none of the Company, Parent or any of the Subsidiaries is conducting or funding any investigation, remediation, remedial action or monitoring of actual or suspected Hazardous Substances in the environment, (iv) none of the Company, Parent or any of the Subsidiaries is liable or, to its knowledge, allegedly liable for any release or threatened release of Hazardous Substances, including at any off-site treatment, storage or disposal site, (v) none of the Company, Parent or any of the Subsidiaries is subject to any claim by any governmental agency or governmental body or person relating to Environmental Laws or Hazardous Substances, and (vi) the Company, Parent and the Subsidiaries have received and are in compliance with all, and have no liability under any, permits, licenses, authorizations, identification numbers or other approvals required under applicable Environmental Laws to conduct their respective businesses, except in each case covered by clauses (i) – (vi) such as would not individually or in the aggregate reasonably be expected to have a Material Adverse Effect; (b) to the knowledge of the Company or the Guarantor there are no facts or circumstances that would reasonably be expected to result in a violation of, liability under, or claim pursuant to, any Environmental Law that would reasonably be expected to have a Material Adverse Effect; and (c) to the knowledge of the Company or the Guarantor there are no Environmental Laws or requirements proposed for adoption or implementation under any Environmental Law that would reasonably be expected to have a Material Adverse Effect. For purposes of this subsection, “ Hazardous Substances ” means (A)

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petroleum and petroleum products, by-products or breakdown products, radioactive materials, asbestos-containing materials, polychlorinated biphenyls and mold, and (B) any other chemical, material or substance defined or regulated as toxic or hazardous or as a pollutant, contaminant or waste under Environmental Laws.

(u) Accurate Disclosure . The statements in the General Disclosure Package and the Final Prospectus under the heading s “Description of Notes” and “Description of Certain Indebtedness,” insofar as such statements summarize legal matters, agreements, documents or proceedings discussed therein, are accurate and fair summaries of such legal matters, agreements, documents or proceedings and present the information required to be shown.

(v) Accurate Tax Disclosure. To the extent that the statements set forth in the General Disclosure Package and the Final Prospectus under the caption “Material U.S. Federal Income Tax Consequences” purport to describe certain provisions of the United States federal tax laws referred to therein, such summaries fairly describe, in all material respects, such provisions.

(w) Absence of Manipulation . Neither the Company nor the Guarantor has taken, directly or indirectly, any action that is designed to or that has constituted or that would reasonably be expected to cause or result in the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Offered Securities.

(x) Statistical and Market-Related Data . Any third-party statistical and market-related data included or incorporated by reference in the General Disclosure Package or in the Final Prospectus are based on or derived from sources that the Company and the Guarantor believe to be reliable and accurate.

(y) Internal Controls and Compliance with the Sarbanes-Oxley Act . Except as set forth in the General Disclosure Package and the Final Prospectus, Parent, the Company and the Subsidiaries and Parent’s Board of Directors (the “ Board ”) are in compliance with Sarbanes-Oxley and all applicable Exchange Rules in all material respects. Parent maintains a system of “internal controls over financial reporting” (as defined in Rule 13a-15(f) of the Exchange Act) (collectively, “ Internal Controls ”) that comply with the Exchange Act and are sufficient to provide reasonable assurances that (i) transactions are executed in accordance with management’s general or specific authorizations, (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with U.S. General Accepted Accounting Principles and to maintain accountability for assets, (iii) access to assets is permitted only in accordance with management’s general or specific authorization, (iv) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences, and (v) the interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Final Prospectus fairly presents the information called for in all material respects and is prepared in accordance with the Commission’s rules and guidelines applicable thereto. The Internal Controls are, or upon consummation of the offering of the Offered Securities will be, overseen by the Audit Committee (the “ Audit Committee ”) of the Board in accordance with Exchange Rules. Parent has not publicly disclosed or reported to the Audit Committee or the Board, and within the next 90 days Parent does not reasonably expect to publicly disclose or report to the Audit Committee or the Board, a significant deficiency, material weakness, change in Internal Controls or fraud involving management or other employees who have a significant role in Internal Controls (each, an “ Internal Control Event ”), any violation of, or failure to comply with, the Securities Laws, or any matter which, if determined adversely, would reasonably be expected to have a Material Adverse Effect.

(z) Disclosure Controls. Except as set forth in the General Disclosure Package and the Final Prospectus, Parent, the Company and the Subsidiaries maintain an effective system of “disclosure controls and procedures” (as defined in Rule 13a-15(e) of the Exchange Act) that is designed to ensure that information required to be disclosed by Parent in reports that it files or submits under

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the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms, including controls and procedures designed to ensure that such information is accumulated and communicated to Parent’s management as appropriate to allow timely decisions regarding required disclosure. Parent, the Company and the Subsidiaries have carried out evaluations of the effectiveness of their disclosure controls and procedures as required by Rule 13a-15 of the Exchange Act.

(aa) Litigation . Except as disclosed in the General Disclosure Package and the Final Prospectus, there are no pending actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency or body, domestic or foreign) against or affecting the Company, Parent any of the Subsidiaries or any of their respective properties that, if determined adversely to the Company, Parent or any of the Subsidiaries, would individually or in the aggregate, reasonably be expected to have a Material Adverse Effect, or would materially and adversely affect the ability of the Company or Parent to perform their respective obligations under the Indenture or this Agreement, or which are otherwise material in the context of the sale of the Offered Securities and the sale of the Guarantees; and to the Company’s or Parent’s knowledge, no such actions, suits or proceedings (including any inquiries or investigations by any court or governmental agency or body, domestic or foreign) are threatened or contemplated.

(bb) Financial Statements . The financial statements included in the Registration Statement, the General Disclosure Package and the Final Prospectus present fairly the financial position of Parent and its consolidated subsidiaries as of the dates shown and their results of operations and cash flows for the periods shown, and, except as otherwise disclosed in the Registration Statement, the General Disclosure Package and the Final Prospectus, such financial statements have been prepared in conformity with the generally accepted accounting principles in the United States applied on a consistent basis. The interactive data in eXtensible Business Reporting Language incorporated by reference in the Registration Statement, the General Disclosure Package and the Final Prospectus fairly presents the information called for in all material respects and has been prepared in accordance with the Commission’s rules and guidelines applicable thereto.

(cc) No Material Adverse Change in Business . Except as disclosed in the General Disclosure Package and the Final Prospectus, since the end of the period covered by the latest audited financial statements included in the General Disclosure Package and the Final Prospectus (i) there has been no change, in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company, Parent and the Subsidiaries, taken as a whole that is material and adverse, (ii) except as disclosed in or contemplated by the General Disclosure Package and the Final Prospectus, there has been no dividend or distribution of any kind declared, paid or made by Parent on any class of its capital stock and (iii) except as disclosed in or contemplated by the General Disclosure Package, there has been no material adverse change in the capital stock, short-term indebtedness, long-term indebtedness, net current assets or net assets of Parent.

(dd) Investment Company Act . Neither the Company nor the Guarantor is and, after giving effect to the offering and sale of the Offered Securities and the application of the proceeds thereof as described in the General Disclosure Package and the Final Prospectus, will not be an “investment company” as defined in the Investment Company Act of 1940 (the “ Investment Company Act ”).

(ee) Ratings . No “nationally recognized statistical rating organization” as such term is defined in Section 3(a)(62) under the Exchange Act (i) has imposed (or has informed the Company that it is considering imposing) any condition (financial or otherwise) on the Company’s retaining any rating assigned to the Company or any securities of the Company or Parent or (ii) has indicated to the Company or Parent that it is considering any of the actions described in Section 7(c)(ii) hereof.

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(ff)  Foreign Corrupt Practices Act. None of the Company, Parent or, to the best of the Company’s and Parent’s knowledge, any of the Subsidiaries or their respective directors, officers, agents, employees or affiliates is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the FCPA, including, without limitation, making use of the mails or any means or instrumentality of interstate commerce corruptly in furtherance of an offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value 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 and the Company, Parent and, to the best of the Company’s and Parent’s knowledge, the Subsidiaries and affiliates have conducted their businesses in compliance with the FCPA and have devised or instituted policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith. In addition, none of the Company, Parent or, to the best of the Company’s and Parent’s knowledge, any of the Subsidiaries or their respective directors, officers, agents, employees or affiliates is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of the U.K. Bribery Act 2010.

(gg)  Compliance with Money Laundering Laws. To the best of the Company’s and Parent’s knowledge, the operations of the Company, Parent and the Subsidiaries are and have been conducted at all times in compliance in all material respects 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, the rules and regulations thereunder and any related or similar rules, regulations or guidelines issued, administered or enforced by any governmental agency.

(hh)  Compliance with OFAC. None of the Company, Parent or any of the Subsidiaries nor, to the knowledge of the Company or Guarantor, any director, officer, agent, employee or affiliate of the Company, Parent or any of the Subsidiaries 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.

(ii)  Taxes. The Company, Parent and the Subsidiaries have filed all federal, state, local and non-U.S. tax returns that are required to be filed or have requested extensions thereof (except in any case in which the failure so to file would not reasonably be expected to have a Material Adverse Effect); and, except as set forth in the General Disclosure Package and the Final Prospectus, the Company, Parent and the Subsidiaries have paid all taxes (including any assessments, fines or penalties) required to be paid by them, except for any such taxes, assessments, fines or penalties currently being contested in good faith or as would not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(jj)  Insurance. The Company, Parent and the Subsidiaries are insured by insurers with appropriately rated claims paying abilities against such losses and risks and in such amounts as are prudent and customary for the businesses in which they are engaged; all policies of insurance insuring the Company, Parent or any of the Subsidiaries or their respective businesses, assets, employees, officers and directors are in full force and effect; the Company, Parent and the Subsidiaries are in compliance with the terms of such policies and instruments in all material respects; and there are no claims by the Company, Parent or any of the Subsidiaries under any such policy or instrument as to which any insurance company is denying liability or defending under a reservation of rights clause; none of the Company, Parent or any such Subsidiary has been refused any insurance coverage sought or applied for; and none of the Company, Parent or any such Subsidiary has any reason to believe that it will not be able to renew its 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 reasonably be expected to have a Material Adverse Effect, except as set forth in or contemplated in the General Disclosure Package and the Final Prospectus.

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3. Purchase, Sale and Delivery of Offered Securities . On the basis of the representations, warranties and agreements and subject to the terms and conditions set forth herein, the Company agrees to sell to the several Underwriters, and each of the Underwriters agrees, severally and not jointly, to purchase from the Company, at a purchase price of 97.00% of the principal amount, the respective principal amounts of Firm Securities set forth opposite the names of the Underwriters in Schedule A hereto.

The Company will deliver the Firm Securities to or as instructed by the Representatives for the accounts of the several Underwriters in a form reasonably acceptable to the Representatives against payment of the purchase price by the Underwriters in Federal (same day) funds by wire transfer to an account at a bank acceptable to the Representatives drawn to the order of the Company at the office of Davis Polk & Wardwell LLP, 450 Lexington Avenue, New York, New York 10017, at 9:00 A.M., New York time, on November 20, 2012, or at such other time not later than seven full business days thereafter as the Representatives and the Company determine, such time being herein referred to as the “ First Closing Date ”. For purposes of Rule 15c6-1 under the Exchange Act, the First Closing Date (if later than the otherwise applicable settlement date) shall be the settlement date for payment of funds and delivery of securities for all the Offered Securities sold pursuant to the offering.

In addition, upon written notice from the Representatives given to the Company from time to time not more than 30 days subsequent to the date of the Final Prospectus, the Underwriters, on the basis of the representations, warranties and agreements set forth herein and subject to the conditions set forth herein, may purchase all or less than all of the Optional Securities at the purchase price per principal amount of Securities (including any accrued interest thereon to the related Optional Closing Date) to be paid for the Firm Securities. The Company agrees to sell to the Underwriters the principal amount of Optional Securities specified in such notice and the Underwriters agree, severally and not jointly, to purchase such Optional Securities. Such Optional Securities shall be purchased for the account of each Underwriter in the same proportion as the principal amount of Firm Securities set forth opposite such Underwriter’s name bears to the total principal amount of Firm Securities (or such principal amount increased as set forth in Section 9 hereof) (subject to adjustment by the Representatives to eliminate fractions) and may be purchased by the Underwriters only for the purpose of covering over-allotments made in connection with the sale of the Firm Securities. No Optional Securities shall be sold or delivered unless the Firm Securities previously have been, or simultaneously are, sold and delivered. The right to purchase the Optional Securities or any portion thereof may be exercised from time to time and to the extent not previously exercised may be surrendered and terminated at any time upon notice by the Representatives to the Company.

Each time for the delivery of and payment for the Optional Securities, being herein referred to as an “ Optional Closing Date ”, which may be the First Closing Date (the First Closing Date and each Optional Closing Date, if any, being sometimes referred to as a “ Closing Date ”), shall be determined by the Representatives but shall be at least one business day and not later than ten full business days after written notice of election to purchase Optional Securities is given. The Company will deliver the Optional Securities being purchased on each Optional Closing Date to or as instructed by the Representatives for the accounts of the several Underwriters in a form reasonably acceptable to the Representatives against payment of the purchase price therefor in Federal (same day) funds by wire transfer to an account at a bank acceptable to the Representatives drawn to the order of the Company, at the above office of Davis Polk & Wardwell LLP.

4. Offering by Underwriters . It is understood that the several Underwriters propose to offer the Offered Securities for sale to the public as set forth in the Final Prospectus.

5. Certain Agreements of the Company and Parent . The Company and/or Parent (as the case may be) agree with the several Underwriters that:

(a) Filing of Prospectuses. The Company has filed or will file each Statutory Prospectus (including the Final Prospectus) pursuant to and in accordance with Rule 424(b)(2) (or, if applicable and consented to by the Representatives, subparagraph (5)) not later than the second business day following the earlier of the date it is first used or the execution and delivery of this Agreement. The Company has complied and will comply with Rule 433.

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(b) Filing of Amendments; Response to Commission Requests . The Company will promptly advise the Representatives of any proposal to amend or supplement the Registration Statement or any Statutory Prospectus at any time and will offer the Representatives a reasonable opportunity to comment on any such amendment or supplement; and the Company will also advise the Representatives promptly of (i) the filing of any such amendment or supplement, (ii) any request by the Commission or its staff for any amendment to the Registration Statement, for any supplement to any Statutory Prospectus or for any additional information, (iii) the institution by the Commission of any stop order proceedings in respect of the Registration Statement or the threatening of any proceeding for that purpose, and (iv) the receipt by the Company of any notification with respect to the suspension of the qualification of the Offered Securities or the Guarantees in any jurisdiction or the institution or threatening of any proceedings for such purpose. The Company will use its reasonable best efforts to prevent the issuance of any such stop order or the suspension of any such qualification and, if issued, to obtain as soon as possible the withdrawal thereof.

(c) Continued Compliance with Securities Laws . (i) If, at any time when a prospectus relating to the Offered Securities or the Guarantee is (or but for the exemption in Rule 172 would be) required to be delivered under the Act by any Underwriter or dealer, any event occurs as a result of which the Final Prospectus as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the Registration Statement or supplement the Final Prospectus to comply with the Act, the Company will promptly notify the Representatives of such event and will promptly prepare and file with the Commission and furnish, at its own expense, to the Underwriters and the dealers and any other dealers upon request of the Representatives, an amendment or supplement which will correct such statement or omission or an amendment which will effect such compliance; and (ii) if at any time prior to the filing of the Final Prospectus, any event occurs as a result of which the General Disclosure Package as then amended or supplemented would include an untrue statement of a material fact or omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading, or if it is necessary at any time to amend the General Disclosure Package to comply with law, the Company will promptly notify the Representatives of such event and will promptly prepare and file with the Commission and furnish, at its own expense, to the Underwriters and the dealers and any other dealers upon request of the Representatives, a supplement which will correct such statement or omission or an amendment which will effect such compliance. Neither the Representatives’ consent to, nor the Underwriters’ delivery of, any such amendment or supplement shall constitute a waiver of any of the conditions set forth in Section 7 hereof.

(d) Rule 158. As soon as practicable, but not later than 16 months, after the date of this Agreement, Parent will make generally available to its securityholders an earnings statement covering a period of at least 12 months beginning after the date of this Agreement and satisfying the provisions of Section 11(a) of the Act and Rule 158.

(e) Furnishing of Prospectuses . The Company will furnish to the Representatives copies of the Registration Statement, including all exhibits, any Statutory Prospectus, the Final Prospectus and all amendments and supplements to such documents, in each case as soon as available and in such quantities as the Representatives reasonably request. The Company will pay the expenses of printing and distributing to the Underwriters all such documents.

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(f) Blue Sky Compliance . The Company will qualify the Offered Securities for offer and sale under the laws of such U.S. jurisdictions as the Representatives shall reasonably request and will continue such qualifications in effect so long as required for distribution of the Securities; provided that the Company shall not be required to (i) qualify as a foreign corporation or other entity or as a dealer in securities in any such jurisdiction where it would not otherwise be required to so qualify, (ii) file any general consent to service of process in any such jurisdiction or (iii) subject itself to taxation in any such jurisdiction if it is not otherwise so subject.

(g) Reporting Requirements . Parent, during the period when the Final Prospectus is required to be delivered under the Act, will file all documents required to be filed with the Commission pursuant to the Exchange Act within the time periods required by the Exchange Act.

(h) Payment of Expenses . The Company will pay all expenses incident to the performance of its obligations under this Agreement, including but not limited to (i) any filing fees and other expenses (including fees and disbursements of counsel to the Underwriters) incurred in connection with qualification of the Offered Securities and the Guarantee for sale under the laws of such jurisdictions as the Representatives designate and the preparation and printing of memoranda relating thereto, (ii) the filing fees for FINRA’s review of the offering of the Offered Securities, and the reasonable fees and disbursements of counsel to the Underwriters in connection with compliance with FINRA’s rules and regulations, (iii) any fees charged by investment rating agencies for the rating of the Offered Securities, costs and expenses relating to investor presentations or any “road show” in connection with the offering and sale of the Offered Securities, (iv) any travel expenses of the Company’s or Parent’s officers and employees and any other expenses of the Company or Guarantor including the chartering of airplanes, (v) fees and expenses in connection with the registration of the Offered Securities under the Exchange Act, (vi) fees and expenses incident to listing the Underlying Shares on the New York Stock Exchange, (vii) the fees and expenses of the QIU, and (viii) expenses incurred in distributing preliminary prospectuses and the Final Prospectus (including any amendments and supplements thereto) to the Underwriters and for expenses incurred for preparing, printing and distributing any Issuer Free Writing Prospectuses to investors or prospective investors. It is understood, however, that, except as provided in subclauses (i) and (ii) of this clause (h), and Sections 8 and 10 hereof, the Underwriters will pay all of their own costs and expenses, including the fees of their counsel, transfer taxes on resale of any of the Securities and the Guarantee by them, and any advertising expenses connected with any offers they may make.

(i) Use of Proceeds . The Company will use the net proceeds received in connection with this offering in the manner described in the “Use of Proceeds” section of the General Disclosure Package and the Final Prospectus and, except as disclosed in the General Disclosure Package and the Final Prospectus, the Company does not intend to use any of the proceeds from the sale of the Offered Securities hereunder to repay any outstanding debt owed to any affiliate of any Underwriter.

(j) Absence of Manipulation . Neither the Company nor the Guarantor will take, directly or indirectly, any action designed to or that would constitute or that might reasonably be expected to cause or result in, stabilization or manipulation of the price of any securities of the Company to facilitate the sale or resale of the Offered Securities.

(k) Restriction on Sale of Securities. For a period of 90 days after the date hereof, neither the Company nor Parent will (i) 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 to purchase, or otherwise transfer or dispose of, directly or indirectly, or file with the Commission a registration statement under the Securities Act relating to, Securities, the Underlying Shares or any securities convertible into or exercisable or exchangeable for Securities or Underlying Shares, or publicly disclose the intention to make any offer, sale, pledge, disposition or filing, or (ii) enter into any swap or other agreement that transfers, in whole or in part, any of the economic consequences of ownership of Securities, Underlying Shares or any such other securities, whether any such

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transaction described in clause (i) or (ii) above is to be settled by delivery of Securities, Underlying Shares or such other securities, in cash or otherwise, without the prior written consent of the Representatives, other than (w) the Offered Securities to be sold hereunder and the Underlying Shares, (x) the shares of Common Stock to be sold concurrently with the Offered Securities, (y) shares of Common Stock, options to purchase shares of Common Stock, restricted stock or restricted stock units granted pursuant to the Company’s management incentive plans in effect on the date hereof and (z) shares of Common Stock issued upon the exercise of options or vesting of restricted stock or restricted stock units pursuant to the terms of the Company’s management incentive plans in effect on the date hereof.

(l) No Actions Resulting in Adjustment of Exchange Rate. Between the date hereof and the First Closing Date, or the Optional Closing Date, if applicable, the Company and Parent will not do or authorize any act or thing that would result in an adjustment of the “exchange rate” (as defined in the Final Prospectus).

(m) Reservation of Underlying Shares . Parent will reserve and keep available at all times, free of preemptive rights, a number of Underlying Shares equal to the initial conversion rate (calculated after giving effect to the maximum number of shares that may be added to the conversion rate in connection with any “make-whole fundamental change” (as defined in the Final Prospectus)) set forth in the Final Prospectus, multiplied by the aggregate principal amount of Offered Securities (expressed in thousands).

6. Free Writing Prospectuses . (a)  Issuer Free Writing Prospectuses . The Company and the Guarantor jointly and severally represent and agree that, unless the Company obtains the prior consent of the Representatives, and 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 Offered 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. Any such free writing prospectus consented to by the Company and the Representatives is hereinafter referred to as a “ Permitted Free Writing Prospectus .” The Company and the Guarantor jointly and severally represent that they have treated and agree that they will treat each Permitted Free Writing Prospectus as an “issuer free writing prospectus,” as defined in Rule 433, and have complied and will comply with the requirements of Rules 164 and 433 applicable to any Permitted Free Writing Prospectus, including timely Commission filing where required, legending and record keeping.

(b)  Term Sheets . The Company will prepare a final term sheet relating to the Offered Securities, containing only information that describes the final terms of the Offered Securities and otherwise in a form consented to by the Representatives, and will file such final term sheet within the period required by Rule 433(d)(5)(ii) following the date such final terms have been established for all classes of the offering of the Offered Securities. Any such final term sheet is an Issuer Free Writing Prospectus and a Permitted Free Writing Prospectus for purposes of this Agreement. The Company and the Representatives also consent to the use by any Underwriter of a free writing prospectus that contains only (i)(x) information describing the preliminary terms of the Offered Securities or their offering or (y) information that describes the final terms of the Offered Securities or their offering and that is included in the final term sheet of the Company contemplated in the first sentence of this subsection or (ii) other information that is not “issuer information,” as defined in Rule 433, it being understood that any such free writing prospectus referred to in clause (i) or (ii) above shall not be an Issuer Free Writing Prospectus for purposes of this Agreement.

7. Conditions of the Obligations of the Underwriters . The obligations of the several Underwriters to purchase and pay for the Offered Securities on the Closing Date will be subject to the accuracy of the representations and warranties of the Company and the Guarantor herein (as though made on the Closing Date), to the accuracy of the statements of the Company’s and the Guarantor’s officers made pursuant to the provisions hereof, to the performance by the Company and the Guarantor of their respective obligations hereunder and to the following additional conditions precedent:

(a)  Accountants’ Comfort Letter . The Representatives shall have received letters, dated, respectively, the date hereof and each Closing Date, of Deloitte & Touche LLP confirming that they are a registered public accounting firm and independent public accountants within the meaning of the Securities Laws and substantially in the form agreed to with the Representatives (except that, in any letter dated a Closing Date, the specified date referred to in the letter shall be a date no more than three days prior to such Closing Date).

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(b)  Filing of Prospectus. The Final Prospectus shall have been filed with the Commission in accordance with the Rules and Regulations and Section 5(a) hereof. No stop order suspending the effectiveness of the Registration Statement or of any part thereof shall have been issued and no proceedings for that purpose shall have been instituted or, to the knowledge of the Company, Guarantor or any Underwriter, shall be contemplated by the Commission.

(c)  No Material Adverse Change . Subsequent to the Applicable Time, there shall not have occurred (i) any change in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company, Parent and the Subsidiaries taken as a whole which, in the judgment of the Representatives, is material and adverse and makes it impractical or inadvisable to proceed with the offering, sale or delivery of the Offered Securities; (ii) any downgrading in the rating of any debt securities of the Company or the Guarantor by any “nationally recognized statistical rating organization” (as defined in Section 3(a)(62) under the Exchange Act), or any public announcement that any such organization has under surveillance or review its rating of any debt securities of the Company or the Guarantor (other than an announcement with positive implications of a possible upgrading, and no implication of a possible downgrading, of such rating); (iii) any change in U.S. or international financial, political or economic conditions or currency exchange rates or exchange controls the effect of which is such as to make it, in the judgment of the Representatives, impractical to proceed with the offering, sale or delivery of or to enforce contracts for the sale of the Offered Securities, whether in the primary market or in respect of dealings in the secondary market; (iv) any suspension or material limitation of trading in securities generally on the New York Stock Exchange, or any setting of minimum or maximum prices for trading on such exchange; (v) or any suspension of trading of any securities of the Company or Guarantor on any exchange or in the over-the-counter market; (vi) any banking moratorium declared by any U.S. federal or New York authorities; (vii) any major disruption of settlements of securities, payment, or clearance services in the United States or any other country where such securities are listed or (viii) any attack on, outbreak or escalation of hostilities or act of terrorism involving the United States, any declaration of war by the U.S. Congress or any other national or international calamity or emergency if, in the judgment of the Representatives, the effect of any such attack, outbreak, escalation, act, declaration, calamity or emergency is such as to make it impractical or inadvisable to proceed with the offering, sale or delivery of the Offered Securities or to enforce contracts for the sale of the Offered Securities.

(d)  Opinion of Counsel for Company and the Guarantor . The Representatives shall have received an opinion, dated such Closing Date, of Weil, Gotshal & Manges LLP, counsel for the Company and the Guarantor, substantially in the form attached hereto as Exhibit A.

(e) Opinion of Counsel for Underwriters. The Representatives shall have received from Davis Polk & Wardwell LLP, counsel for the Underwriters, such opinion or opinions, dated such Closing Date, with respect to such matters as the Representatives may require, and the Company shall have furnished to such counsel such documents as they request for the purpose of enabling them to pass upon such matters.

(f)  Officers’ Certificate . The Representatives shall have received a certificate, dated such Closing Date, of an executive officer of the Company and the Guarantor and a principal financial or accounting officer of the Company and the Guarantor in which such officers shall state that: the

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representations and warranties of the Company and the Guarantor in this Agreement are true and correct; the Company and the Guarantor have complied with all agreements and satisfied all conditions on their parts to be performed or satisfied hereunder at or prior to such Closing Date; no stop order suspending the effectiveness of the Registration Statement has been issued and no proceedings for that purpose have been instituted or, to the best of their knowledge and after reasonable investigation, are contemplated by the Commission; and, subsequent to the dates of the most recent financial statements in the General Disclosure Package and the Final Prospectus, there has been no material adverse change in the condition (financial or otherwise), results of operations, business, properties or prospects of the Company, Parent and the Subsidiaries taken as a whole except as set forth in the General Disclosure Package and the Final Prospectus or as described in such certificate.

(g) FINRA clearance . FINRA shall have advised the Representatives in writing that it has no objection to the underwriting and other terms and arrangements related to the offering of the Offered Securities.

(h) Lock Up Agreements . The “lock-up” agreements, each substantially in the form of Exhibit B hereto, between you and the officers and directors of the Company listed on Schedule C hereto relating to sales and certain other dispositions of Securities, Underlying Shares or certain other securities, delivered to you on or before the date hereof, shall be full force and effect on such Closing Date.

The Company and the Guarantor will furnish the Representatives with such conformed copies of such opinions, certificates, letters and documents as the Representatives reasonably request. The Representatives may in their discretion waive on behalf of the Underwriters compliance with any conditions to the obligations of the Underwriters hereunder.

8. Indemnification and Contribution . (a)  Indemnification of Underwriters . The Company and the Guarantor will jointly and severally indemnify and hold harmless each Underwriter, its partners, members, directors, officers, employees, agents, affiliates and each person, if any, who controls such Underwriter within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an “ Indemnified Party ”), against any and all losses, claims, damages or liabilities, joint or several, to which such Indemnified Party may become subject, under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon (i) any untrue statement or alleged untrue statement of any material fact contained in any part of the Registration Statement at any time, or arise out of or are based upon the omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, or (ii) any untrue statement or alleged untrue statement of any material fact contained in any part of any Statutory Prospectus as of any time, the Final Prospectus or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or alleged omission of a material fact necessary to make the statements therein, in each case in light of the circumstances under which they were made, not misleading, and will reimburse each Indemnified Party for any legal or other expenses reasonably incurred by such Indemnified Party in connection with investigating or defending against any loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not such Indemnified Party is a party thereto), whether threatened or commenced, and in connection with the enforcement of this provision with respect to any of the above as such expenses are incurred; provided, however, that the Company and the Guarantor will 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 in or omission or alleged omission from any of such documents in reliance upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter consists of the information described as such in subsection (b) below.

(b) Indemnification of Company and the Guarantor . Each Underwriter will severally and not jointly indemnify and hold harmless the Company, the Guarantor, each of their respective directors, each of their respective officers who signs a Registration Statement and each person, if any, who controls the

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Company or Guarantor within the meaning of Section 15 of the Act or Section 20 of the Exchange Act (each, an “ Underwriter Indemnified Party ”), against any losses, claims, damages or liabilities to which such Underwriter Indemnified Party may become subject, under the Act, the Exchange Act, other Federal or state statutory law or regulation or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) arise out of or are based upon (i) any untrue statement or alleged untrue statement of any material fact contained in any part of the Registration Statement at any time, or arise out of or are based upon the omission or alleged omission of a material fact required to be stated therein or necessary to make the statements therein not misleading, or (ii) any untrue statement or alleged untrue statement of any material fact contained in any part of any Statutory Prospectus as of any time, the Final Prospectus or any Issuer Free Writing Prospectus, or arise out of or are based upon the omission or alleged omission of a material fact necessary to make the statements therein, in each case in light of the circumstances under which they were made, 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 reliance upon and in conformity with written information furnished to the Company by such Underwriter through the Representatives specifically for use therein, and will reimburse any legal or other expenses reasonably incurred by such Underwriter Indemnified Party in connection with investigating or defending against any such loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not such Underwriter Indemnified Party is a party thereto), whether threatened or commenced, based upon any such untrue statement or omission, or any such alleged untrue statement or omission as such expenses are incurred, it being understood and agreed that the only such information furnished by any Underwriter consists of the following information in the Final Prospectus furnished on behalf of each Underwriter: the concession figures appearing in the third paragraph under the caption “Underwriting; Conflicts of Interest,” the information contained in the twelvth paragraph under the caption “Underwriting; Conflicts of Interest” relating to market making activities; and the information contained in the thirteenth, fourteenth and fifteenth paragraphs under the caption “Underwriting; Conflicts of Interest” relating to stabilizing activities.

(c) Actions against Parties; Notification . Promptly after receipt by an indemnified party under this Section of notice of the commencement of any action, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying party under this Section 8, notify the indemnifying party of the commencement thereof; but the failure to notify the indemnifying party shall not relieve it from any liability that it may have under subsection (a) or (b) above except to the extent that it has been materially prejudiced (through the forfeiture of substantive rights or defenses) by such failure; and provided further that the failure to notify the indemnifying party shall not relieve it from any liability that it may have to an indemnified party otherwise than under subsection (a) or (b) above. In case any such action is brought against any indemnified party and it notifies the indemnifying party of the commencement thereof, the indemnifying party will be entitled to participate therein and, to the extent that it may wish, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably 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 will not be liable to such indemnified party under this Section for any legal or other expenses subsequently incurred by such indemnified party in connection with the defense thereof other than reasonable costs of investigation. No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened action in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party unless such settlement (i) includes an unconditional release of such indemnified party from all liability on any claims that are the subject matter of such action 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 an indemnified party. Notwithstanding anything contained herein to the contrary, if indemnity may be sought pursuant to Section 8(d) below in respect of such action or proceeding, then in addition to such separate firm for the indemnified parties, the indemnifying party shall be liable for the reasonable fees and expenses of not more than one separate firm (in addition to any local counsel) for Morgan Stanley in its capacity as a “qualified independent underwriter” and all persons, if any, who control Morgan Stanley within the meaning of either Section 15 of the Act or Section 20 of the Exchange Act.

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(d) Indemnification of the QIU. Without limitation and in addition to its obligation under the other subsections of this Section 8, the Company and the Guarantor agree to indemnify and hold harmless the QIU, its officers and employees and each person, if any, who controls the QIU within the meaning of Section 15 and Section 20 of the Exchange Act against any and all losses, claims, damages or liabilities arising out of or based upon the QIU’s acting as a “qualified independent underwriter” (within the meaning of Rule 5121(f)(12) of FINRA) in connection with the offering contemplated by this Agreement, and agrees to reimburse each such indemnified person for any legal or other expense reasonably incurred by them in connection with investigating or defending against any loss, claim, damage, liability, action, litigation, investigation or proceeding whatsoever (whether or not the QIU is a party thereto), whether threatened or commenced, and in connection with the enforcement of this provision with respect to any of the above as such expenses are incurred; provided, however, that the Company and the Guarantor shall not be liable in any such case to the extent that any such loss, claim, damage or liability results from the gross negligence or willful misconduct of the QIU.

(e) Contribution . If the indemnification provided for in this Section is unavailable or insufficient to hold harmless an indemnified party in respect of any losses, claims, damages or liabilities referred to herein, then each indemnifying party shall contribute to the amount paid or payable by such indemnified party as a result of the losses, claims, damages or liabilities referred to herein (i) in such proportion as is appropriate to reflect the relative benefits received by the Company and the Guarantor on the one hand and the Underwriters on the other from the offering of the Offered Securities or (ii) if the allocation provided by clause (i) above 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 and the Guarantor on the one hand and the Underwriters on the other in connection with the statements or omissions which resulted in such losses, claims, damages or liabilities as well as any other relevant equitable considerations. The relative benefits received by the Company and the Guarantor on the one hand and the Underwriters 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 and the Guarantor bear to the total underwriting discounts and commissions received by the Underwriters. 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 and the Guarantor or the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such untrue statement or omission. The amount paid by an indemnified party as a result of the losses, claims, damages or liabilities referred to in the first sentence of this subsection (e) shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in connection with investigating or defending any action or claim which is the subject of this subsection (e). Notwithstanding the provisions of this subsection (e), no Underwriter shall be required to contribute any amount in excess of the amount by which the total price at which the Securities underwritten by it and distributed to the public were offered to the public exceeds the amount of any damages which such 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. The Underwriters’ obligations in this subsection (e) to contribute are several in proportion to their respective underwriting obligations and not joint. The Company, Guarantor and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 8(e) 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 in this Section 8(e).

9. Default of Underwriters . If any Underwriter or Underwriters default in their obligations to purchase Offered Securities hereunder on either the First or any Optional Closing Date and the aggregate principal amount of Offered Securities that such defaulting Underwriter or Underwriters agreed but failed to purchase does not exceed 10% of the total principal amount of Offered Securities that the Underwriters are obligated to purchase on the Closing Date, the Representatives may make arrangements satisfactory to the Company for the purchase of such Offered Securities by other persons, including any of the Underwriters, but if no such arrangements are made by such Closing Date, the non-defaulting Underwriters shall be obligated severally, in proportion to their respective commitments hereunder, to purchase the

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Offered Securities that such defaulting Underwriters agreed but failed to purchase on such Closing Date. If any Underwriter or Underwriters so default and the aggregate principal amount of Offered Securities with respect to which such default or defaults occur exceeds 10% of the total principal amount of Offered Securities that the Underwriters are obligated to purchase on such Closing Date and arrangements satisfactory to the Representatives and the Company for the purchase of such Offered Securities by other persons are not made within 36 hours after such default, this Agreement will terminate without liability on the part of any non-defaulting Underwriter or the Company, except as provided in Section 10 (provided that if such default occurs with respect to Optional Securities after the First Closing Date, this Agreement will not terminate as to the Firm Securities or any Optional Securities purchased prior to such termination). As used in this Agreement, the term “Underwriter” includes any person substituted for an Underwriter under this Section. Nothing herein will relieve a defaulting Underwriter from liability for its default.

10. Survival of Certain Representations and Obligations . The respective indemnities, agreements, representations, warranties and other statements of the Company, the Guarantor or any of their respective officers and of the several Underwriters set forth in or made pursuant to this Agreement will remain in full force and effect, regardless of any investigation, or statement as to the results thereof, made by or on behalf of any Underwriter, the QIU, the Company, the Guarantor or any of their respective representatives, officers or directors or any controlling person, and will survive delivery of and payment for the Offered Securities. If the purchase of the Offered Securities by the Underwriters is not consummated for any reason other than solely because of the termination of this Agreement pursuant to Section 9 hereof, the Company will reimburse the Underwriters for all out-of-pocket expenses (including fees and disbursements of counsel) reasonably incurred by them in connection with the offering of the Offered Securities, and the respective obligations of the Company, the Guarantor and the Underwriters pursuant to Section 8 hereof shall remain in effect. For the avoidance of doubt, if this Agreement is terminated pursuant to Section 9 hereof, the respective obligations of the Company, the Guarantor and the Underwriters pursuant to Section 8 hereof shall remain in effect. In addition, if any Offered Securities have been purchased hereunder, the representations and warranties in Section 2 and all obligations under Section 5 shall also remain in effect.

11. Notices . All communications hereunder will be in writing and, if sent to the Underwriters, will be mailed or delivered and confirmed to the Representatives, c/o Credit Suisse Securities (USA) LLC, Eleven Madison Avenue, New York, N.Y. 10010-3629, Attention: LCD-IBD and J.P. Morgan Securities LLC, 383 Madison Avenue, New York, NY 10179, or, if sent to the Company or Guarantor, will be mailed, delivered or telegraphed and confirmed to it at AK Steel Corporation, 9227 Centre Pointe Drive, West Chester, OH 45069, Attention: General Counsel; provided, however, that any notice to an Underwriter pursuant to Section 8 will be mailed, delivered or telegraphed and confirmed to such Underwriter.

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

12. Successors . This Agreement will inure to the benefit of and be binding upon the parties hereto and their respective successors and the officers and directors and controlling persons referred to in Section 8, and no other person will have any right or obligation hereunder.

13. Representation of Underwriters . The Representatives will act for the several Underwriters in connection with this financing, and any action under this Agreement taken by the Representatives jointly or individually will be binding upon all the Underwriters.

14. 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.

15. Absence of Fiduciary Relationship. The Company and Parent acknowledge and agree that:

(a) No Other Relationship . The Underwriters have been retained solely to act as underwriters in connection with the sale of Offered Securities and that no fiduciary, advisory or agency relationship between the Company and the Guarantor, on the one hand, and the Underwriters, on the other hand, has been created in respect of any of the transactions contemplated by this Agreement or the Final Prospectus, irrespective of whether the Underwriters have advised or is advising the Company or the Guarantor on other matters;

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(b) Arms’ Length Negotiations . The price of the Offered Securities set forth in this Agreement was established by the Company following discussions and arms-length negotiations with the Underwriters, and the Company and the Guarantor are capable of evaluating and understanding and understand and accept the terms, risks and conditions of the transactions contemplated by this Agreement;

(c) Absence of Obligation to Disclose . The Company and the Guarantor have been advised that the Underwriters and their affiliates are engaged in a broad range of transactions which may involve interests that differ from those of the Company and the Guarantor and that the Underwriters have no obligation to disclose such interests and transactions to the Company or the Guarantor by virtue of any fiduciary, advisory or agency relationship; and

(d) Waiver . The Company and the Guarantor waive, to the fullest extent permitted by law, any claims they may have against the Underwriters for breach of fiduciary duty or alleged breach of fiduciary duty and agree that the Underwriters shall have no liability (whether direct or indirect) to the Company or the Guarantor in respect of such a fiduciary duty claim or to any person asserting a fiduciary duty claim on behalf of or in right of the Company or the Guarantor, including stockholders, employees or creditors of the Company or the Guarantor.

16. Applicable Law . This Agreement shall be governed by, and construed in accordance with, the laws of the State of New York.

The Company and the Guarantor hereby submit to the non-exclusive jurisdiction of the Federal and state courts in the Borough of Manhattan in The City of New York in any suit or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby. The Company and the Guarantor irrevocably and unconditionally waive any objection to the laying of venue of any suit or proceeding arising out of or relating to this Agreement or the transactions contemplated hereby in Federal and state courts in the Borough of Manhattan in The City of New York and irrevocably and unconditionally waive and agree not to plead or claim in any such court that any such suit or proceeding in any such court has been brought in an inconvenient forum.

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If the foregoing is in accordance with the Representatives’ understanding of our agreement, kindly sign and return to the Company one of the counterparts hereof, whereupon it will become a binding agreement between the Company, Guarantor and the several Underwriters in accordance with its terms.

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SCHEDULE B

“General Use Issuer Free Writing Prospectus” includes each of the following documents:

1. Final Term Sheet, dated November 14, 2012, a copy of which is attached hereto.

The following information is also included in the General Disclosure Package:

[None]

AK Steel Corporation (“AK Steel”)

Pricing Term Sheet

AK Steel Corporation

Offering of

$150,000,000 aggregate principal amount of

5.00% Exchangeable Senior Notes due 2019

Fully and Unconditionally Guaranteed by AK Steel Holding Corporation

(the “Exchangeable Notes Offering”)

and

AK Steel Holding Corporation

Offering of

22,000,000 shares of Common Stock, par value $0.01 per share

(the “Common Stock Offering”)

This pricing term sheet relates to the Exchangeable Notes Offering and Common Stock Offering described below and should be read together with (i) the preliminary prospectus supplement dated November 13, 2012 (including the documents incorporated by reference therein and the base prospectus in respect thereof) relating to the Exchangeable Notes Offering (the “Exchangeable Notes Preliminary Prospectus Supplement”) and (ii) the preliminary prospectus supplement dated November 13, 2012 (including the documents incorporated by reference therein and the base prospectus in respect thereof) relating to the Common Stock Offering (the “Common Stock Preliminary Prospectus Supplement,” and, together with the Exchangeable Notes Preliminary Prospectus Supplement, the “Preliminary Prospectus Supplements”). The information in this term sheet supersedes the information in each Preliminary Prospectus Supplement to the extent that it is inconsistent therewith. Terms used but not defined herein have the meanings ascribed to them in the relevant Preliminary Prospectus Supplement.

The exact stock prices and effective dates may not be set forth in the table above, in which case:

Notwithstanding the foregoing, in no event will the exchange rate per $1,000 principal amount of Notes exceed 250.0000, subject to adjustment in the same manner as the exchange rate as set forth under “Description of Notes - Exchange Rights - Exchange Rate Adjustments” in the Exchangeable Notes Preliminary Prospectus Supplement.

Capitalization:

The following table sets forth the cash and cash equivalents and capitalization as of September 30, 2012 of AK Holding and its consolidated subsidiaries, including AK Steel:

The Exchangeable Notes Issuer and the Common Stock Issuer (together, the “Issuers”) have filed a registration statement (including a prospectus dated November 13, 2012 and the Preliminary Prospectus Supplements dated November 13, 2012) with the Securities and Exchange Commission, or SEC, for the Exchangeable Notes Offering and the Common Stock Offering, to which this communication relates. Before you invest, you should read the applicable Preliminary Prospectus Supplement, the accompanying prospectus and the other documents the Issuers have filed with the SEC for more complete information about the Issuers and the Exchangeable Notes Offering and Common Stock Offering. You may get these documents for free by visiting EDGAR on the SEC web site at www.sec.gov. Alternatively, the Issuers or any underwriter or dealer participating in the Exchangeable Notes Offering or the Common Stock Offering will arrange to send you the prospectus supplement and accompanying prospectus if you request them by contacting:

Exchangeable Notes Preliminary Prospectus Supplement : Credit Suisse Securities (USA) LLC, Prospectus Department, One Madison Avenue, New York, NY 10010, 800-221-1037, or email: newyork.prospectus@credit-suisse.com; J.P. Morgan Securities LLC, Attn: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, 866-803-9204; Citigroup Global Markets Inc., c/o Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, 800-831-9146; Wells Fargo Securities, LLC, Attn: Equity Syndicate Department, 375 Park Avenue, New York, New York 10152, 800-326-5897, or email: cmclientsupport@wellsfargo.com; Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, 866-718-1649, or email: prospectus@morganstanley.com or BofA Merrill Lynch, Attn: Prospectus Department, 222 Broadway, New York, NY 10038, or email: dg.prospectus_requests@baml.com; or

Common Stock Preliminary Prospectus Supplement : J.P. Morgan Securities LLC, Attn: Broadridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, 866-803-9204; Credit Suisse Securities (USA) LLC, Prospectus Department, One Madison Avenue, New York, NY 10010, 800-221-1037, or email: newyork.prospectus@credit-suisse.com; Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, 866-718-

1649, or email: prospectus@morganstanley.com; Wells Fargo Securities, LLC, Attn: Equity Syndicate Department, 375 Park Avenue, New York, New York 10152, 800-326-5897, or email: cmclientsupport@wellsfargo.com; Deutsche Bank Securities Inc., Attn: Prospectus Group, 60 Wall Street, New York, NY 10005, 800-503-4611, or email: prospectus.cpdg@db.com; or Goldman, Sachs & Co., Prospectus Department, 200 West Street, New York, NY 10282, 866-471-2526, facsimile: 212-902-9316, or email: prospectus-ny@ny.email.gs.com.

ANY DISCLAIMERS OR OTHER NOTICES THAT MAY APPEAR BELOW ARE NOT APPLICABLE TO THIS COMMUNICATION AND SHOULD BE DISREGARDED. SUCH DISCLAIMERS OR OTHER NOTICES WERE AUTOMATICALLY GENERATED AS A RESULT OF THIS COMMUNICATION BEING SENT VIA BLOOMBERG OR ANOTHER EMAIL SYSTEM.

SCHEDULE C