Document:

Purchase Agreement dated November 7, 2006

 Exhibit 10.1 
 $220,000,000 
 Hornbeck Offshore Services, Inc. 
 1.625 % Convertible Senior Notes due 2026 
 unconditionally guaranteed as to the 
 payment of principal, premium, if any, and interest by 
 Energy Services Puerto Rico, LLC 
 Hornbeck Offshore Services, LLC 
 Hornbeck Offshore Transportation, LLC 
 Hornbeck Offshore Operators, LLC 
 HOS-IV, LLC and 
 Hornbeck Offshore Trinidad &
Tobago, LLC 
 Purchase Agreement 
 November 7, 2006 
 JEFFERIES & COMPANY, INC. 
 BEAR, STEARNS & CO. INC. 
 c/o Jefferies & Company, Inc. 
 520 Madison Avenue 
 New York, NY 10022 
 Ladies and
Gentlemen: 
 Hornbeck Offshore Services, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to the initial
purchasers listed on Schedule I hereto (the “Initial Purchasers”) for whom you are acting as representatives, $220,000,000 principal amount of its 1.625% Convertible Senior Notes due 2026 (the “Firm Securities”) to
be issued pursuant to the provisions of an Indenture dated as of November 13, 2006 (the “Indenture”) between the Company, each of the subsidiaries of the Company that are parties to the Indenture (collectively, the
“Guarantors”) and Wells Fargo Bank, National Association, as Trustee (the “Trustee”). The Company also proposes to issue and sell to the Initial Purchasers not more than an additional $30,000,000 principal amount of
its 1.625% Convertible Senior Notes due 2026 (the “Additional Securities”, and together with the Firm Securities and the Guarantees (defined below), the “Securities”) if and to the extent that the Initial Purchasers
shall have determined to exercise the right to purchase such Additional Securities granted to the Initial Purchasers in Section 1 hereof solely to cover over-allotments. The Securities will be fully and unconditionally guaranteed (the
“Guarantees”) as to payment of principal, premium, if any, and interest, if any, on an unsecured senior basis, jointly and severally, by the Guarantors. The 

 
Securities will be in certain circumstances convertible into shares (the “Underlying Securities”) of common stock of the Company, par value $0.01 per
share (the “Common Stock”). In connection with the offering of the Securities, the Company is entering into (i) Common Stock call option transactions with Jefferies International Limited, Bear, Stearns International Limited and
AIG-FP Structured Finance (Cayman) Limited pursuant to the confirmation letters dated November 7, 2006 (the “Hedge Transaction”) and (ii) warrant transactions with Jefferies International Limited, Bear, Stearns
International Limited and AIG-FP Structured Finance (Cayman) Limited pursuant to the confirmation letters dated November 7, 2006 (the “Warrant Transaction” and together with the Hedge Transaction, the “Hedge and Warrant
Transaction Documentation”). 
 The Securities and the Underlying Securities will be offered without being registered under the Securities Act
of 1933, as amended (together with the rules and regulations promulgated there under, the “Securities Act”), only to “qualified institutional buyers” (as defined in the Securities Act) in compliance with the exemption from
registration provided by Rule 144A under the Securities Act. 
 Each Initial Purchaser and its direct and indirect transferees will be entitled to the
benefits of a Registration Rights Agreement dated as of the Closing Date (as defined below) among the Company, the Guarantors and the Initial Purchasers (the “Registration Rights Agreement”). 
 In connection with the sale of the Securities, the Company has prepared a preliminary offering memorandum (including the documents incorporated by reference
therein, the “Preliminary Memorandum”) and will prepare a final offering memorandum (including the documents incorporated by reference therein, the “Final Memorandum” and, together with the Preliminary Memorandum,
the “Offering Memorandum”) for the information of the Initial Purchasers and for delivery to prospective purchasers of the Securities. The time when sales of Securities are first made or confirmed by the Initial Purchasers to
qualified institutional buyers is referred to as the “Time of Sale,” and the Preliminary Memorandum, together with the other information referenced on Schedule II hereto, is referred to as the “Time of Sale
Information.” 
 The Company and each of the Guarantors, jointly and severally hereby agree with the Initial Purchasers as
follows: 
 1. Agreements to Sell and Purchase. The Company agrees to issue and sell the Firm Securities to the several Initial Purchasers as
hereinafter provided, and each Initial Purchaser, upon the basis of the representations and warranties herein contained, but subject to the conditions hereinafter stated, agrees to purchase severally and not jointly, from the Company the Firm
Securities at a purchase price of 97.5% of the principal amount thereof (the “Purchase Price”), in the respective principal amount of Securities set forth opposite such Initial Purchaser’s name in Schedule I hereto plus accrued
interest, if any, from November 13, 2006, to the date of payment and delivery. 
 On the basis of the representations and warranties contained in
this Agreement, and subject to its terms and conditions, the Company agrees to sell to the Initial Purchasers the Additional Securities, and the Initial Purchasers shall have the right to purchase in whole, or from time to time in part, up to
$30,000,000 principal amount of Additional Securities at the 

  

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Purchase Price plus accrued interest, if any, from the Closing Date to the date of payment and delivery, solely to cover over-allotments, if any. If you on behalf of
the Initial Purchasers exercise such option, you shall so notify the Company in writing not later than 30 days after the date of this Agreement, which notice shall specify the principal amount of Additional Securities to be purchased by the Initial
Purchasers and the date on which such Additional Securities are to be purchased; provided, however, that the Initial Purchasers may not exercise their option to purchase Additional Securities in whole or in part such that the delivery of any
Additional Securities occurs more than 12 calendar days after the delivery of the Firm Securities, unless: (i) neither the Firm Securities nor the Additional Securities are treated as having been issued with more than a de minimis amount of
original issue discount for U.S. federal income tax purposes (as defined in Section 1273 of the Code and the Treasury regulations promulgated thereunder), or (ii) the Firm Securities are publicly traded (within the meaning of Treasury
Regulation Section 1.1273-2(f)) and either (a) the Additional Securities are treated as having been issued with no more than a de minimis amount of original issue discount for U.S. federal income tax purposes (determined without the
application of Treasury Regulation Section 1.1275-2(k)) or (b) on the Pricing Date (as defined below), the yield of the Firm Securities (based on their then fair market value) is not more than 110% of the yield of such Firm Securities on
their issue date as defined in Treasury Regulation Section 1.1273-2(a)(2) (or 110% of the coupon rate, if the Firm Securities are treated as having been issued with no more than a de minimis amount of original issue discount for U.S. federal
income tax purposes). The “Pricing Date” shall mean the earlier of (i) the date on which the price of the Additional Securities is established and (ii) the later of (A) seven calendar days before the date on which the
price of the Additional Securities is established and (B) the date on which the Company’s intention to issue the Additional Securities is publicly announced through one or more media. Such date may be the same as the Closing Date but not
earlier than the Closing Date nor later than ten business days after the date of such notice. 
 The Company and the Guarantors acknowledge and agree
that the Initial Purchasers are acting solely in the capacity of an arm’s length contractual counterparty to the Company and the Guarantors with respect to the offering of Securities and the Underlying Securities contemplated hereby (including
in connection with determining the terms of the offering) and not as a financial advisor or a fiduciary to, or an agent of, the Company and the Guarantors or any other person. Additionally, no Initial Purchaser is advising the Company or any other
person as to any legal, tax, investment, accounting or regulatory matters in any jurisdiction. The Company and the Guarantors shall consult with their own advisors concerning such matters and shall be responsible for making their own independent
investigation and appraisal of the transactions contemplated hereby, and the Initial Purchasers shall have no responsibility or liability to the Company or the Guarantors with respect thereto. Any review by the Initial Purchasers of the Company, the
Guarantors, the transactions contemplated hereby or other matters relating to such transactions will be performed solely for the benefit of the Initial Purchasers and shall not be on behalf of the Company or the Guarantors. Each of the Company and
the Guarantors hereby waives and releases, to the fullest extent permitted by law, any claims that it may have against the Initial Purchasers with respect to any breach or alleged breach of any fiduciary or similar duty in connection with the
transactions contemplated by this Agreement or any matters leading up to such transactions. 
  

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 2. Terms of the Offering. The Company and the Guarantors understand that the Initial Purchasers intend
(i) to offer privately pursuant to Rule 144A under the Securities Act their respective portions of the Securities as soon after this Agreement has become effective as in the judgment of the Initial Purchasers is advisable and
(ii) initially to offer the Securities upon the terms set forth in the Final Memorandum. 
 The Company and the Guarantors confirm that they have
authorized the Initial Purchasers, subject to the restrictions set forth below, to distribute copies of the Offering Memorandum in connection with the offering of the Securities. Each Initial Purchaser hereby severally makes to the Company and the
Guarantors the following representations and agreements: 
 (i) it is a “qualified institutional buyer” within the meaning of
Rule 144A under the Securities Act; 
 (ii) offers and sales of the Securities will be made only by it or its affiliates thereof
qualified to do so in the jurisdictions in which such offers or sales are made; and 
 (iii)(A) it has not solicited offers for, or
offered or sold, and will not solicit offers for, or offer to sell, the Securities by means of any form of general solicitation or general advertising (as those terms are used in Regulation D under the Securities Act (“Regulation
D”)) or in any manner involving a public offering within the meaning of Section 4(2) of the Securities Act and (B) it has solicited and will solicit offers for the Securities only from, and has offered or sold and will offer, sell
or deliver the Securities only to persons who it reasonably believes to be “qualified institutional buyers” within the meaning of Rule 144A under the Securities Act that in purchasing the Securities are deemed to have represented and
agreed as provided in the Offering Memorandum. 
 With respect to offers and sales of the Securities to “qualified institutional buyers” within the meaning
of Rule 144A, as described in clause (iii)(B) above, each Initial Purchaser hereby represents and agrees with the Company and the Guarantors that prior to or contemporaneously with the purchase of the Securities, the Initial Purchaser will take
reasonable steps to inform, and cause each of its affiliates to take responsible steps to inform, persons acquiring Securities from such Initial Purchaser or affiliate, as the case may be, that the Securities (A) are being sold to them in
reliance on Rule 144A under the Securities Act, (B) have not been and, except as described in the Offering Memorandum, will not be registered under the Securities Act, and (C) may not be offered, sold or otherwise transferred except as
described in the Offering Memorandum. 
 3. Payment for Securities. Payment for the Firm Securities shall be made to the Company in Federal or
other funds immediately available in New York City against delivery of such Firm Securities for the account of the several Initial Purchasers at 10:00 a.m., New York City time, on November 13, 2006 or at such other time on the same or such
other date, not later than November 13, 2006, as shall be designated in writing by you. The time and date of such payment are hereinafter referred to as the “Closing Date.” 
  

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 Payment for any Additional Securities shall be made to the Company in Federal or other funds immediately available
in New York City against delivery of such Additional Securities for the account of the several Initial Purchasers at 10:00 a.m., New York City time, on the date specified in the notice described in Section 1 or at such other time on the same or
on such other date, not later than December 7, 2006, as shall be designated in writing by you. The time and date of such payment are hereinafter referred to as the “Option Closing Date.” 
 The Firm Securities and Additional Securities, as the case may be, to be purchased by each Initial Purchaser hereunder will be represented by one or more
definitive global certificates in book-entry form which will be deposited by or on behalf of the Company with The Depository Trust Company (“DTC”) or its designated custodian. The Company will deliver the Firm Securities or the
Additional Securities on the Closing Date or the Option Closing Date, as the case may be, to Jefferies & Company, Inc., for the account of each Initial Purchaser, against payment by or on behalf of such Initial Purchaser of the purchase
price therefor by wire transfer to the account of the Company of same day funds, by causing DTC to credit the Firm Securities or the Additional Securities, as the case may be, to the account of Jefferies & Company, Inc. at DTC. 

4. Representations and Warranties. The Company and each of the Guarantors, jointly and severally, represent and warrant to the Initial Purchasers that:

 (a) the Preliminary Memorandum did not, as of its date, the Time of Sale Information, did not, as of the Time of Sale and, will not,
as of the Closing Date, and the Final Memorandum did not, as of its date, and will not, as of the Closing Date, contain any untrue statement of a material fact or 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; provided, however, that this representation and warranty shall not apply to any statements or omissions made in reliance upon and in conformity with information
relating to any Initial Purchaser furnished to the Company in writing by such Initial Purchaser through you expressly for use therein; 
 (b) the documents incorporated by reference in the Time of Sale Information and the Final Memorandum, when they were filed with the Securities and Exchange Commission (the “Commission”), conformed in all material respects
to the requirements of the Securities Exchange Act of 1934, as amended and the applicable rules and regulations of the Commission thereunder (collectively the “Exchange Act”), and none of such documents contained an untrue statement
of a material fact or omitted to state a material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; and any further documents so filed and incorporated by reference in the
Final Memorandum, when such documents are filed with the Commission, will conform in all material respects to the requirements of the Exchange Act, and will not contain an untrue statement of a material fact or omit to state a material fact
necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; 
 (c) the
financial statements, and the related notes thereto, of the Company included or incorporated by reference in the Time of Sale Information and the Final 

  

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Memorandum present fairly, in all material respects, the consolidated financial position of the Company and its consolidated subsidiaries as of the dates indicated and
the results of their operations and the changes in their consolidated cash flows for the periods specified; and said financial statements have been prepared in conformity with United States generally accepted accounting principles and practices
applied on a consistent basis, except as described in the notes to such financial statements; and the other financial and statistical information and any other financial data set forth in the Time of Sale Information and the Final Memorandum present
fairly, in all material respects, the information purported to be shown thereby at the respective dates or for the respective periods to which they apply and, to the extent that such information is set forth in or has been derived from the financial
statements and accounting books and records of the Company, have been prepared on a basis consistent with such financial statements and the books and records of the Company; 
 (d) none of the Company, the Guarantors, or any of their subsidiaries has sustained since the date of the latest audited financial statements
included in the Time of Sale Information any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or
decree, otherwise than as set forth or contemplated in the Time of Sale Information; and, since the respective dates as of which information is given in the Time of Sale Information, there has not been any material change in the capital stock,
material increase in long-term debt or any material decreases in consolidated net current assets or stockholders’ equity of the Company, the Guarantors, or any of their subsidiaries or any material adverse change, or any development involving a
prospective material adverse change, in or affecting the general affairs, management, current or future consolidated financial position, stockholders’ equity or results of operations of the Company and its subsidiaries taken as a whole (a
“Material Adverse Effect”); 
 (e) the Company and its subsidiaries own no real property; the Company and its
subsidiaries have good title to (i) all barges, tugs, tankers, offshore supply vessels, multi-purpose supply vessels, anchor-handling towing supply vessels and other vessels (collectively, “Vessels”) owned by them and
(ii) all other personal property owned by them, in each case free and clear of all liens, encumbrances and defects except such as are described in the Time of Sale Information and the Final Memorandum or such as do not materially affect the
value of such property and do not interfere with the use made and proposed to be made of such property by the Company and its subsidiaries; and none of the real property and building space held under lease by the Company and its subsidiaries are
material to the Company and its subsidiaries taken as a whole and, should their existing leases expire or terminate, the cost to secure new facilities would not result in a Material Adverse Effect; 
 (f) each of the Company and the Guarantors has been duly incorporated as a corporation or formed as a limited liability company and is validly
existing as a corporation or limited liability company in good standing under the laws of the State of Delaware, with the corporate or limited liability company power and authority to own its properties and conduct its business as described in the
Time of Sale Information and the 

  

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Final Memorandum, and has been duly qualified as a foreign corporation or limited liability company for the transaction of business and is in good standing under the
laws of each other jurisdiction in which it owns or leases properties or conducts any business so as to require such qualification, except where the failure to be so qualified or in good standing in any such jurisdiction would not have a material
adverse effect on the ability of the Company and its subsidiaries taken as a whole to own or lease their properties or conduct their businesses as described in the Time of Sale Information and the Final Memorandum; 
 (g) this Agreement has been duly authorized, executed and delivered by the Company and the Guarantors; 
 (h) the Company had, at the date indicated in the Time of Sale Information and the Final Memorandum, a duly authorized, issued and outstanding
capitalization as set forth in the Time of Sale Information and the Final Memorandum under the caption “Capitalization”; all of the issued shares of capital stock of the Company have been duly and validly authorized and issued and are
fully paid and non-assessable; such authorized capital stock of the Company conforms as to legal matters in all material respects to the description thereof contained in the Time of Sale Information and the Final Memorandum; there are no outstanding
options to purchase, or any rights or warrants to subscribe for, or any securities or obligations convertible into, or any contracts or commitments to issue or sell, any shares of Common Stock, any shares of capital stock of any subsidiary, or any
such warrants, convertible securities or obligations, except as set forth in the Time of Sale Information and the Final Memorandum and except for options granted under, or contracts or commitments pursuant to, the Company’s previous or
currently existing stock option and other similar officer, director or employee benefit plans; 
 (i) None of the transactions
contemplated by this Agreement (including, without limitation, the use of the proceeds from the sale of the Securities) will violate or result in a violation of Section 7 of the Exchange Act, or any regulation promulgated thereunder, including,
without limitation, Regulations T, U, and X of the Board of Governors of the Federal Reserve System; 
 (j) Prior to the date hereof,
neither the Company nor any of its affiliates has taken any action which is designed to or which has constituted or which might have been expected to cause or result in stabilization or manipulation of the price of any security of the Company in
connection with the offering of the Securities; 
 (k) the Securities have been duly authorized by the Company, and, when issued and
delivered as provided in this Agreement and duly authenticated pursuant to the Indenture will be duly executed, authenticated, issued and delivered and will constitute valid and legally binding obligations of the Company and the Guarantors entitled
to the benefits provided by the Indenture; and the Securities will conform, in all material respects, to the descriptions thereof in the Time of Sale Information and the Final Memorandum; 
  

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 (l) the Indenture has been duly authorized, executed and delivered by the Company and the
Guarantors, and (assuming the authorization, execution and delivery by the Trustee), constitutes a valid and legally binding instrument of the Company and the Guarantors, enforceable against the Company and the Guarantors in accordance with its
terms, subject as to enforcement, to bankruptcy, insolvency, fraudulent transfer, fraudulent conveyance, moratorium, reorganization and laws of general applicability relating to or affecting creditors’ rights and general equity principles
(regardless of whether enforceability is considered in a proceeding in equity or at law); and the Indenture conforms, in all material respects, to the description thereof in the Time of Sale Information and the Final Memorandum; 
 (m) upon issuance and delivery of the Securities in accordance with the Agreement and the Indenture, the Securities (except the Guarantees) will be
convertible at the option of the holder thereof into shares of the Underlying Securities in accordance with the terms of the Securities (except the Guarantees); the Underlying Securities reserved for issuance upon conversion of the Securities
(except the Guarantees) have been duly authorized and reserved and, when issued upon conversion of the Securities (except the Guarantees) in accordance with the terms of the Securities (except the Guarantees), will be validly issued, fully paid and
non assessable, and the issuance of the Underlying Securities will not be subject to any preemptive or similar rights; 
 (n) the
Registration Rights Agreement has been duly authorized by the Company and the Guarantors and, when duly executed and delivered by the Company and the Guarantors, shall constitute the valid and legally binding obligation of the Company and the
Guarantors, enforceable against the Company and the Guarantors in accordance with its terms, subject as to enforcement, to bankruptcy, insolvency, fraudulent transfer, fraudulent conveyance, moratorium, reorganization and laws of general
applicability relating to or affecting creditors’ rights and general equity principles (regardless of whether enforceability is considered in a proceeding in equity or at law); and except that rights to indemnification thereunder may be limited
by federal or state securities laws or public policy relating thereto; and the Registration Rights Agreement will conform, in all material respects, to the description thereof in the Time of Sale Information and the Final Memorandum; 
 (o) the Hedge and Warrant Transaction Documentation has been duly authorized, executed and delivered by the Company and constitutes a valid and
legally binding instrument of the Company, enforceable against it in accordance with its terms, subject as to enforcement, to bankruptcy, insolvency, fraudulent transfer, fraudulent conveyance, moratorium, reorganization and laws of general
applicability relating to or affecting creditors’ rights and general equity principles (regardless of whether enforceability is considered in a proceeding in equity or at law); and the Hedge and Warrant Transaction Documentation conforms, in
all material respects, to the description thereof in the Time of Sale Information and the Final Memorandum; 
 (p) none of the Company,
the Guarantors, or any of their subsidiaries is in violation of its certificate of incorporation or certificate of formation, or its bylaws or limited liability company agreement (or other organizational documents), or in default in 

  

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the performance or observance of any material obligation, covenant or condition contained in any indenture, mortgage, deed of trust, loan agreement, lease or other
agreement or instrument to which it is a party or by which it or any of its properties may be bound, other than such defaults that individually or in the aggregate would not have a Material Adverse Effect; 
 (q) the statements set forth in the Time of Sale Information and the Final Memorandum under the captions “Description of Notes,”
“Description of Capital Stock”, “Registration Rights,” and “Certain United States Federal Income Tax Considerations”, insofar as they constitute summaries of the legal matters, documents or proceedings referred to
therein, fairly present, in all material respects, the information called for with respect to such legal matters, documents or proceedings; 
 (r) other than as set forth in the Time of Sale Information and the Final Memorandum, there are no legal or governmental proceedings pending to which the Company, the Guarantors, or any of their subsidiaries is a party or of which any
property of the Company or any of its subsidiaries is the subject which, if determined adversely to the Company or any of its subsidiaries, would individually or in the aggregate have a Material Adverse Effect; and, to the best of the Company’s
knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by others; 
 (s) neither the
Company, the Guarantors, nor any affiliate (as defined in Rule 501(b) of Regulation D) of the Company or the Guarantors has directly, or through any agent, sold, offered for sale, solicited offers to buy or otherwise negotiated in respect of, any
security (as defined in the Securities Act) which is or will be integrated with the sale of the Securities in a manner that would require the registration under the Securities Act of the offering contemplated by the Time of Sale Information and the
Final Memorandum; 
 (t) none of the Company, the Guarantors, any affiliate of the Company or any person acting on its or their behalf
(other than the Initial Purchasers for whom we make no representation) has offered or sold the Securities by means of any general solicitation or general advertising within the meaning of Rule 502(c) under the Securities Act; 
 (u) the Securities satisfy the requirements set forth in Rule 144A(d)(3) under the Securities Act; 
 (v) the issue and sale of the Securities, the issuance by the Company of the Underlying Securities upon conversion of the Securities and the
compliance by the Company and the Guarantors with all of the provisions of the Securities, the Indenture, the Registration Rights Agreement, the Hedge and Warrant Transaction Documentation and this Agreement and the consummation of the transactions
herein and therein contemplated (A) will not conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan agreement or other agreement or
instrument to which the Company or any of its subsidiaries is a party or by which the Company or any of its subsidiaries is bound or 

  

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to which any of the property or assets of the Company or any of its subsidiaries is subject, except such conflict, breach or violation as would not have a Material
Adverse Effect, (B) will not result in any violation of the provisions of the Certificate of Incorporation or bylaws of the Company, and (C) will not result in the violation of any statute or any order, rule or regulation of any court or
governmental agency or body having jurisdiction over the Company or any of its subsidiaries or any of their properties, except such violations as would not have a Material Adverse Effect; and except as disclosed in the Time of Sale Information and
the Final Memorandum, no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required for the issue and sale of the Securities or the consummation by the Company of the
transactions contemplated by this Agreement or the Indenture, except for the filing and effectiveness of a registration statement by the Company with the Commission pursuant to the Securities Act and the Registration Rights Agreement, the
qualification of the Indenture under the Trust Indenture Act of 1939 (“Trust Indenture Act”) in relation to the Underlying Securities and such consents, approvals, authorizations, registrations or qualifications as may be required
under state securities or Blue Sky laws in connection with the purchase and distribution of the Securities by the Initial Purchasers in the manner contemplated by this Agreement, the Time of Sale Information and the Final Memorandum and except for
such consents the failure to obtain would not have a Material Adverse Effect; 
 (w) the Company is not and, after giving effect to the
offering and sale of the Securities and the application of the proceeds thereof as described in the Time of Sale Information and the Final Memorandum, will not be required to register as an “investment company” as such term is defined in
the Investment Company Act of 1940, as amended (the “Investment Company Act”); 
 (x) Ernst & Young LLP, who
have certified the audited consolidated financial statements of the Company and its subsidiaries, are independent public accountants as required under the Securities Act and the rules and regulations of the Commission thereunder; 
 (y) when the Securities are issued and delivered pursuant to this Agreement, no Securities will be of the same class (within the meaning of Rule
144A under the Securities Act) as securities which are listed on a national securities exchange registered under Section 6 of the Exchange Act, or quoted in a U.S. automated inter-dealer quotation system; 
 (z) the Company is subject to Section 13 or 15(d) of the Exchange Act; 
 (aa) the Company and its subsidiaries own or possess adequate licenses or other rights to use all trademarks, service marks, trade names and
know-how necessary to conduct the businesses now or proposed to be operated by them as described in the Time of Sale Information and the Final Memorandum, and neither the Company nor any of its subsidiaries has received any notice of conflict with
(or knows of any such conflict with) asserted rights of others with respect to any trademarks, service marks, trade names or know-how which, if such assertion of conflict were sustained, would individually or in the aggregate have a Material Adverse
Effect; 
  

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 (bb) the Company and its subsidiaries possess all licenses, permits, certificates, consents,
orders, approvals and other authorizations from, and have made all declarations and filings with, all federal, state, local and other governmental authorities, the American Bureau of Shipping and all courts and other tribunals, including without
limitation under any applicable Environmental Laws (as defined below), currently required or necessary to own or lease, as the case may be, and to operate their properties and to carry on their business as now and proposed to be conducted as set
forth in the Time of Sale Information and the Final Memorandum (“Permits”), except where the failure to obtain such Permits would not individually or in the aggregate have a Material Adverse Effect; the Company and its subsidiaries
have fulfilled and performed all of their obligations with respect to such Permits and no event has occurred which allows, or after notice or lapse of time would allow, revocation or termination thereof or results in any other material impairment of
the rights of the holder of any such Permit, except where the failure to perform such obligations or the occurrence of such event would not have a Material Adverse Effect; and neither the Company nor any of its subsidiaries has received any notice
of any proceeding relating to revocation or modification of any such Permit, except as described in the Time of Sale Information and the Final Memorandum and except where such revocation or modification would not individually or in the aggregate
have a Material Adverse Effect; 
 (cc) the Company and its subsidiaries have filed all necessary federal, state and foreign income and
franchise tax returns or have timely requested extensions thereof and have paid all taxes shown as due thereon or made adequate reserve or provision therefor; and other than tax deficiencies which the Company or any subsidiary is contesting in good
faith and for which the Company or such subsidiary has provided adequate reserves, there is no tax deficiency that has been asserted against the Company or any subsidiary that would individually or in the aggregate have a Material Adverse Effect;

 (dd) except as described in the Time of Sale Information and the Final Memorandum or as would not individually or in the aggregate
have a Material Adverse Effect (A) the Company and its subsidiaries are in compliance with and not subject to any known liability under applicable Environmental Laws (as defined below), (B) the Company and its subsidiaries have made all
filings and provided all notices required under any applicable Environmental Laws, and have, and are in compliance with, all Permits required under any applicable Environmental Laws and each of them is in full force and effect, (C) there is no
civil, criminal or administrative action, suit, demand, claim, hearing, notice of violation, investigation, proceeding, notice or demand letter or request for information pending or, to the best of the Company’s knowledge, threatened against
the Company or its subsidiaries under any Environmental Law, (D) no lien, charge, encumbrance or restriction has been recorded under any Environmental Law with respect to any assets, facility or property owned, operated, leased or controlled by
the Company or any of its subsidiaries, (E) neither the Company nor any of its subsidiaries has received notice that it has been identified as a potentially responsible party under the Comprehensive Environmental Response, Compensation and
Liability Act of 1980, as 

  

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amended (“CERCLA”), or any comparable state law, (F) no property or facility of the Company or any of its subsidiaries is (i) listed or, to
the best of the Company’s knowledge, proposed for listing on the National Priorities List under CERCLA or (ii) listed in the Comprehensive Environmental Response, Compensation, Liability Information System List promulgated pursuant to
CERCLA, or on any comparable list maintained by any state or local governmental authority and (G) each Vessel complies with the Federal Water Pollution Control Act, as amended, and has secured and carries on board a current U.S. Coast Guard
Certificate of Financial Responsibility (Water Pollution); 
 For purposes of this Agreement, “Environmental Laws” means the common
law, all federal treaties and all applicable federal, state and local laws or regulations, codes, orders, decrees, judgments or injunctions issued, promulgated, approved or entered thereunder, relating to pollution or protection of public or
employee health and safety or the environment, including, without limitation, laws relating to (i) emissions, discharges, releases or threatened releases of hazardous materials into the environment (including, without limitation, ambient air,
surface water, ground water, sea water, land surface or subsurface strata), (ii) the manufacture, processing, distribution, use, generation, treatment, storage, disposal, transport or handling of hazardous materials, and (iii) underground
and above ground storage tanks and related piping, and emissions, discharges, releases or threatened releases therefrom; 
 (ee) there
is no strike, labor dispute, slowdown or work stoppage with the employees of the Company or any of its subsidiaries which is pending or, to the best of the Company’s knowledge, threatened; neither the Company nor any of its subsidiaries is a
party to or has any obligation under any collective bargaining agreement or other labor union contract, white paper or side agreement with any labor union or organization; except as described in the Time of Sale Information and the Final Memorandum,
to the best of the Company’s knowledge, no collective bargaining organizing activities are taking place with respect to the Company or any of its subsidiaries; and the Company has a policy on drug and alcohol abuse applicable to each of the
Vessels that meets or exceeds the standards contained in the current edition of the Oil Companies International Marine Forum Guidelines for the Control of Drugs and Alcohol Onboard Ship; 
 (ff) the Company and its subsidiaries carry insurance in such amounts and covering such risks as in their determination is adequate for the conduct
of their business or the value of their properties; 
 (gg) neither the Company nor any of its subsidiaries has any liability for any
prohibited transaction or funding deficiency or any complete or partial withdrawal liability with respect to any pension, profit sharing, 401(k) plan or other plan which is subject to the Employee Retirement Income Security Act of 1974, as amended
(“ERISA”), to which the Company or any of its subsidiaries makes or ever has made a contribution and in which any employee of the Company or any of its subsidiaries is or has ever been a participant, except for such liabilities
which would not individually or in the aggregate have a Material Adverse Effect; and with respect to such plans, the Company and each of its subsidiaries are in compliance in all material respects with all applicable provisions of ERISA; 

 

 -12- 

 (hh) the Company maintains a system of internal control over financial reporting (as such term is
defined in Rule 13a-15(f) of the Exchange Act) that complies with the requirements of the Exchange Act and has been designed by the Company’s principal executive officer and principal financial officer, or under their supervision, to provide
reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; the Company’s internal control over financial
reporting is effective, and the Company is not aware of any material weaknesses in its internal control over financial reporting; 
 (ii) since the date of the latest audited financial statements included in the Time of Sale Information, there has been no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably
likely to materially affect, the Company’s internal control over financial reporting except as set forth in the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2006; 
 (jj) the Company maintains disclosure controls and procedures (as such term is defined in Rule 13a-15(e) of the Exchange Act) that comply with the
requirements of the Exchange Act; such disclosure controls and procedures have been designed to ensure that material information relating to the Company and its subsidiaries is made known to the Company’s principal executive officer and
principal financial executive officer by others within those entities; and such disclosure controls and procedures are effective; and 
 (kk) to the best of the Company’s knowledge, the statistical and market related data included in the Time of Sale Information and the Final Memorandum are based on or derived from sources which are reliable and accurate. 
 5. Covenants of the Company and the Guarantors. The Company and the Guarantors covenant and agree with each of the several Initial Purchasers as follows:

 (a) the Company and the Guarantors will deliver to the Initial Purchasers as many copies of the Preliminary Memorandum and the Final
Memorandum (including all amendments and supplements thereto) as the Initial Purchasers may reasonably request; 
 (b) before
distributing any amendment or supplement to the Time of Sale Information or the Final Memorandum, the Company and the Guarantors will furnish to the Initial Purchasers a copy of the proposed amendment or supplement for review and not to distribute
any such proposed amendment or supplement to which the Initial Purchasers reasonably disapprove after reasonable notice thereof; 
 (c)
if, at any time prior to the completion of the initial placement of the Securities by the Initial Purchasers, any event shall occur as a result of which it is necessary in the opinion of the Initial Purchasers to amend or supplement the Time of Sale
Information or the Final Memorandum in order that the Time of Sale Information or the Final Memorandum will not include an untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the
light of the 

  

 -13- 

 
circumstances when the Time of Sale Information or the Final Memorandum is delivered to a purchaser, not misleading, or if it is necessary to amend or supplement the
Time of Sale Information or the Final Memorandum to comply with law, the Company and the Guarantors will forthwith prepare and furnish, at the expense of the Company and the Guarantors, to the Initial Purchasers and to the dealers (whose names and
addresses the Initial Purchasers will furnish to the Company) to which Securities may have been sold by the Initial Purchasers on behalf of the Initial Purchasers and to any other dealers upon request, such amendments or supplements to the Time of
Sale Information or the Final Memorandum as may be necessary to correct such untrue statement or omission or so that the statements in the Time of Sale Information or the Final Memorandum as so amended or supplemented will comply with applicable
law; 
 (d) the Company and the Guarantors will endeavor to qualify the Securities for offer and sale under the securities or Blue Sky
laws of such jurisdictions as the Initial Purchasers shall reasonably request and to continue such qualification in effect so long as reasonably required for distribution of the Securities and to pay all fees and expenses (including fees and
disbursements of counsel to the Initial Purchasers) reasonably incurred in connection with such qualification and in connection with the determination of the eligibility of the Securities for investment under the laws of such jurisdictions as the
Initial Purchasers may designate; provided that neither the Company nor any Guarantor shall be required to file a general consent to service of process in any jurisdiction or to qualify as a foreign corporation in any jurisdiction in which it
is not so qualified; 
 (e) without the prior written consent of Jefferies & Company, Inc. and Bear, Stearns & Co.
Inc., the Company and the Guarantors will not, during the period ending 90 days after the date of the Final Memorandum (the “Lock-up Period”), (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, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into or exercisable or exchangeable
for Common Stock, (ii) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common Stock or (iii) file with the Commission a registration statement
under the Securities Act relating to any additional shares of Common Stock or securities convertible into, or exchangeable for, any shares of Common Stock, or publicly disclose the intention to effect any transaction described in clause (i),
(ii) or (iii), whether any such transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or such other securities, in cash or otherwise; provided that the foregoing shall not apply to
(A) the sale of the Securities under this Agreement or the issuance of the Underlying Securities, (B) the grant by the Company of employee or director stock options, restricted stock awards or restricted stock unit awards in the ordinary
course of business, the issuance by the Company of any shares of Common Stock of the Company upon the exercise of an option or upon the sale by the Company of shares of Common Stock pursuant to the Company’s employee stock purchase plan,
(C) any transfer of shares of Common Stock pursuant to the Company’s 401(k) plan, (D) the filing by the Company of any registration statement with the Commission on Form S-8 relating to the offering of securities pursuant to the terms
of the 

  

 -14- 

 
Company’s existing incentive plan or employee stock purchase plan, (E) the conversion of a security outstanding on the date hereof, (F) the Hedge and
Warrant Transaction Documentation executed by the Company concurrently with the pricing of the Securities and (G) filing of any registration statement in respect of the Securities and the Underlying Securities. 
 (f) the Company will use the net proceeds received by the Company from the sale of the Securities pursuant to this Agreement in the manner specified
in the Time of Sale Information and the Final Memorandum under the caption “Use of Proceeds”; 
 (g) the Company and the
Guarantors will use their reasonable best efforts to have the Underlying Securities listed on the New York Stock Exchange; 
 (h) during
the period from the Closing Date until two years after the Closing Date, or the Option Closing Date, if applicable, without the prior written consent of the Initial Purchasers, the Company and the Guarantors will not, and will not permit any of
their “affiliates” (as defined in Rule 144 under the Securities Act) to, resell any of the Securities or Underlying Securities which constitute “restricted securities” under Rule 144 that have been reacquired by any of them;

 (i) whether or not the transactions contemplated in this Agreement are consummated or this Agreement is terminated, the Company and
the Guarantors will pay or cause to be paid all costs and expenses incident to the performance of its obligations hereunder, including without limiting the generality of the foregoing, all fees, costs and expenses (i) incident to the
preparation, issuance, execution, authentication and delivery of the Securities, including any expenses of the Trustee, (ii) incident to the preparation, printing and distribution of the Preliminary Memorandum, Time of Sale Information and the
Final Memorandum (including in each case all exhibits, amendments and supplements thereto), (iii) incurred in connection with the registration or qualification and determination of eligibility for investment of the Securities under the laws of
such jurisdictions as the Initial Purchasers may designate (including fees of counsel for the Initial Purchasers and their disbursements), (iv) in connection with the admission for trading of the Securities on any securities exchange or
inter-dealer quotation system (as well as in connection with the admission of the Securities for trading in the Private Offerings, Resales and Trading through Automatic Linkages (“PORTAL”) system of the National Association of
Securities Dealers, Inc. or any appropriate market system), (v) related to any filing with the National Association of Securities Dealers, Inc., (vi) in connection with the printing (including word processing and duplication costs) and
delivery of this Agreement, the Indenture, the Preliminary and Supplemental Blue Sky Memoranda and any Legal Investment Survey and the furnishing to Initial Purchasers and dealers of copies of the Preliminary Memorandum and the Final Memorandum,
including mailing and shipping, as herein provided, (vii) payable to rating agencies in connection with the rating of the Securities, (viii) in connection with the listing of the Underlying Securities on the New York Stock Exchange, and
(ix) any expenses incurred by the Company in connection with a “road show” presentation to potential investors (it being understood that, except as expressly set forth in this Section 5(i) and elsewhere in this Agreement
(including, but not limited to, Sections 7 and 10 hereof), the Company shall have no obligation to pay any costs and expenses of the Initial Purchasers, including legal fees incurred by the Initial Purchasers); 
  

 -15- 

 (j) the Company and each Guarantor shall not be or become, at any time prior to the expiration of
two years after the Closing Date, an open-end investment company, unit investment trust, closed-end investment company or face-amount certificate company that is or is required to be registered under Section 8 of the Investment Company Act;

 (k) while the Securities remain outstanding and are “restricted securities” within the meaning of Rule 144(a)(3) under the
Securities Act, the Company will, during any period in which it is not subject to Section 13 or 15(d) under the Exchange Act, make available to the purchasers and any holder of Securities in connection with any sale thereof and any prospective
purchaser of Securities and securities analysts, in each case upon request, the information specified in, and meeting the requirements of, Rule 144A(d)(4) under the Securities Act (or any successor thereto); 
 (l) the Company will not take any action prohibited by Regulation M under the Exchange Act, in connection with the distribution of the Securities
contemplated hereby; 
 (m) none of the Company, any of its affiliates (as defined in Rule 501(b) under the Securities Act) or any
person acting on behalf of the Company or such affiliate will solicit any offer to buy or offer or sell the Securities or the Underlying Securities by means of any form of general solicitation or general advertising within the meaning of Regulation
D, including: (i) any advertisement, article, notice or other communication published in any newspaper, magazine or similar medium or broadcast over television or radio; and (ii) any seminar or meeting whose attendees have been invited by
any general solicitation or general advertising; 
 (n) none of the Company, any of its affiliates (as defined in Rule 501(b) under the
Securities Act) or any person acting on behalf of the Company or such affiliate will sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any security (as defined in the Securities Act) which will be integrated with the
sale of the Securities or the Underlying Securities in a manner which would require the registration under the Securities Act of the Securities or Underlying Securities, and the Company will take all action that is appropriate or necessary to assure
that its offerings of other securities will not be integrated for purposes of the Securities Act with the offering contemplated hereby; 
 (o) the Company and the Guarantors will execute and deliver the Registration Rights Agreement in the form previously agreed upon and will comply with all provisions and obligations of the Registration Rights Agreement as required herein;

 (p) prior to any registration of the Securities pursuant to the Registration Rights Agreement, or at such earlier time as may be so
required, to qualify the Indenture under the Trust Indenture Act, and to enter into any necessary supplemental indentures in connection therewith; 
  

 -16- 

 (q) the Company will use its reasonable best efforts to cause the Securities to be eligible for
trading on PORTAL; 
 (r) the Company will reserve and keep available at all times, free of pre-emptive rights, shares of Common Stock
for the purpose of enabling the Company to satisfy all obligations to issue the Underlying Securities upon conversion of the Securities; 
 (s) except for such documents that are publicly available on the Commission’s Electronic Data Gathering, Analysis and Retrieval system (“EDGAR”), the Company and the Guarantors shall furnish to the holders of the
Securities as soon as practicable after the end of each fiscal year an annual report (including a balance sheet and statements of income, stockholders’ equity and cash flows of the Company and its consolidated subsidiaries certified by
independent public accountants) and, as soon as practicable after the end of each of the first three quarters of each fiscal year (beginning with the fiscal quarter ending after the date of the Final Memorandum), to make available to its security
holders consolidated summary financial information of the Company and its subsidiaries for such quarter in reasonable detail; 
 (t)
during a period of five years from the date of the Final Memorandum, except for such documents that are publicly available on EDGAR, the Company and the Guarantors shall furnish to you copies of all reports or other communications (financial or
other) furnished to stockholders of the Company, and deliver to you (i) as soon as they are available, copies of any reports and financial statements furnished to or filed with the Commission or any securities exchange on which the Securities,
or any class of securities of the Company or Guarantor is listed; and (ii) such additional information concerning the business and financial condition of the Company as you may from time to time reasonably request (such financial statements to
be on a consolidated basis to the extent the accounts of the Company and its subsidiaries are consolidated in reports furnished to its stockholders generally or to the Commission); 
 (u) the Company and the Guarantors shall comply with all agreements set forth in the representation letter of the Company to DTC relating to the
approval of the Securities by DTC for “book-entry” transfer; 
 (v) the Company and the Guarantors shall advise the Initial
Purchasers promptly, and, if requested by the Initial Purchasers, confirm such advice in writing, of the issuance by any state securities commission of any stop order suspending the qualification or exemption of any of the Securities for offering or
sale in any jurisdiction, or the initiation of any proceeding for such purpose by any state securities commission or other regulatory authority, and shall use their reasonable best efforts to prevent the issuance of any stop order or order
suspending the qualification or exemption of any of the Securities under any state securities or Blue Sky laws, and if, at any time, any state securities commission or other regulatory authority shall issue an order suspending the 

  

 -17- 

 
qualification or exemption of any of the Securities under any state securities or Blue Sky laws, the Company and the Guarantors shall use their reasonable best efforts
to obtain the withdrawal or lifting of such order at the earliest possible time; and 
 (w) the Company shall use its reasonable best
efforts to cause to become effective under the Securities Act, on or prior to 180 days after the Closing Date, a registration statement on Form S-3 providing for the registration of the resale of the Securities and the Underlying Securities in
accordance with the provisions of the Registration Rights Agreement. 
 6. Conditions to the Initial Purchasers’ Obligations. The several
obligations of the Initial Purchasers hereunder to purchase the Firm Securities on the Closing Date are subject to the performance by the Company and the Guarantors of their obligations hereunder and to the following additional conditions:

 (a) the representations and warranties of the Company and the Guarantors contained herein are true and correct on and as of the
Closing Date as if made on and as of the Closing Date and the Company and the Guarantors shall have complied with all agreements and all conditions on their part to be performed or satisfied hereunder at or prior to the Closing Date (for the
avoidance of doubt, the description of the proportional increase of the convertible note hedge and warrant transactions upon the exercise of the overallotment option by the initial purchasers outlined in the Preliminary Offering Memorandum shall not
have changed in the Time of Sale Information or the Final Memorandum); 
 (b) On or after the date hereof no downgrading shall have
occurred in the rating accorded the Company’s debt securities by any “nationally recognized statistical rating organization”, as that term is defined by the Commission for purposes of Rule 436(g)(2) under the Securities Act;

 (c)(i) neither the Company, the Guarantors, nor any of their subsidiaries shall have sustained since the date of the latest audited
financial statements included in the Time of Sale Information any loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action,
order or decree, otherwise than as set forth or contemplated in the Time of Sale Information, and (ii) since the respective dates as of which information is given in the Time of Sale Information (excluding any amendment or supplement thereto
after the date hereof), there shall not have been (A) any change in the capital stock or long-term debt of the Company, the Guarantors or any of their subsidiaries or any change, or any development involving a prospective change, in or
affecting the general affairs, management, financial position, stockholders’ equity or results of operations of the Company, the Guarantors and their subsidiaries, taken as a whole, otherwise than as set forth or contemplated in the Time of
Sale Information, or (B) the suspension or material limitation of trading in the capital stock of the Company on the New York Stock Exchange, the effect of which , in any case described in clause (i) or (ii), in the judgment of the Initial
Purchasers makes it impracticable or inadvisable to proceed with the offering or the delivery of the Securities on the Closing Date on the terms and in the manner contemplated in the Time of Sale Information and the Final Memorandum; 
  

 -18- 

 (d) the Initial Purchasers shall have received on and as of the Closing Date a certificate of an
executive officer of the Company, with specific knowledge about the Company’s financial matters, satisfactory to the Initial Purchasers to the effect set forth in Sections 6(a), 6(b) and 6(c) and to the further effect that there has not
occurred any material adverse change, or any development involving a prospective material adverse change, in or affecting the business, financial position, stockholders’ equity or results of operations of the Company and its subsidiaries, taken
as a whole, from that set forth in the Time of Sale Information and the Final Memorandum; 
 (e) Winstead Sechrest & Minick
P.C., outside counsel for the Company, shall have furnished to the Initial Purchasers their written opinion, dated the Closing Date, in form and substance satisfactory to the Initial Purchasers, to the effect that: 
 (i) each of the Company and the Guarantors has been duly incorporated as a corporation or formed as a limited liability company and is validly
existing as a corporation or limited liability company in good standing under the laws of the State of Delaware, with corporate or limited liability company power and authority to own its properties and conduct its business as described in the Time
of Sale Information; 
 (ii) the Company has an authorized capitalization as set forth in the Time of Sale Information, and all of the
issued shares of capital stock of the Company have been duly authorized and validly issued and are fully paid and non-assessable; 
 (iii) each of the Company and the Guarantors has been duly qualified as a foreign corporation or limited liability company for the transaction of business and is in good standing under the laws of each other jurisdiction in which it owns or
leases properties or conducts any business so as to require such qualification, except where the failure to be so qualified or in good standing in any such jurisdiction would not have a Material Adverse Effect; 
 (iv) each Subsidiary (as defined in the Indenture) of the Company (other than the Guarantors) has been duly formed as a limited liability company or
other foreign entity and is validly existing as a limited liability company or other foreign entity in good standing under the laws of its jurisdiction of formation except to the extent that the failure to be so formed, validly existing or in good
standing would not have a Material Adverse Effect on the Company; and all of the issued and outstanding membership or other equity interests of each such Subsidiary of the Company (including the Guarantors) have been duly authorized and validly
issued, are fully paid and non-assessable, and are owned directly or indirectly by the Company, free and clear of all liens, encumbrances, equities or claims except to the extent as will not have a Material Adverse Effect on the Company; 

 

 -19- 

 (v) to such counsel’s knowledge and other than as set forth in the Time of Sale Information,
there are no legal or governmental proceedings pending to which the Company, the Guarantors, or any of their subsidiaries is a party or of which any property of the Company or any of its subsidiaries is the subject which, if determined adversely to
the Company or any of its subsidiaries, would individually or in the aggregate have a Material Adverse Effect; and, to such counsel’s knowledge, no such proceedings are threatened or contemplated by governmental authorities or threatened by
others; 
 (vi) this Agreement has been duly authorized, executed and delivered by each of the Company and the Guarantors; 

(vii) the Registration Rights Agreement has been duly authorized, executed and delivered by the Company and the Guarantors and, assuming the due
authorization, execution and delivery of the other parties thereto, constitutes a valid and legally binding obligation of the Company and the Guarantors, enforceable against the Company and the Guarantors, in accordance with its terms, except as
limited by bankruptcy, insolvency, fraudulent conveyance, fraudulent transfer, moratorium, reorganization and other similar laws of general application affecting the rights and remedies of creditors and by general principles of equity (regardless of
whether enforceability is considered in a proceeding in equity or at law) and, as to rights of indemnification, to principles of public policy or federal or state securities laws relating thereto; 
 (viii) the Securities have been duly authorized, executed, issued and delivered by each of the Company and the Guarantors and constitute valid and
legally binding obligations of the Company and the Guarantors entitled to the benefits provided by the Indenture, enforceable against the Company and the Guarantors in accordance with their terms, except as limited by bankruptcy, insolvency,
fraudulent conveyance, fraudulent transfer, moratorium, reorganization and other similar laws of general application affecting the rights and remedies of creditors and by general principles of equity (regardless of whether enforceability is
considered in a proceeding in equity or at law); 
 (ix) the Underlying Securities reserved for issuance upon conversion of the
Securities have been duly authorized and reserved and, when issued upon conversion of the Securities in accordance with the terms of the Securities, will be validly issued, fully paid and non-assessable and the issuance of the Underlying Securities
will not be subject to any preemptive or similar rights under the Company’s Certificate of Incorporation or Bylaws or under the Delaware General Corporation Law; and the Underlying Securities conform in all material respects to the descriptions
thereof in the Time of Sale Information and the Final Memorandum; 
 (x) the Indenture has been duly authorized, executed and delivered
by the Company and the Guarantors, and constitutes a valid and legally binding instrument of the Company and the Guarantors, enforceable against the Company 

  

 -20- 

 
and the Guarantors in accordance with its terms, except as limited by bankruptcy, insolvency, fraudulent conveyance, fraudulent transfer, moratorium, reorganization
and other similar laws of general application affecting the rights and remedies of creditors and by general principles of equity (regardless of whether enforceability is considered in a proceeding in equity or at law); 
 (xi) no consent, approval, authorization, order, registration or qualification of or with any such court or governmental agency or body is required
for the issue and sale of the Securities, the issuance by the Company of the Underlying Securities upon conversion of the Securities or the consummation by the Company and the Guarantors of the transactions contemplated by this Agreement, the
Indenture, the Hedge and Warrant Transaction Documentation or the Registration Rights Agreement, except (A) if applicable, the shelf registration statement required to become effective with the Commission be filed under the Registration Rights
Agreement and (B) such as have been obtained and such consents, approvals, authorizations, registrations or qualifications as may be required under state securities or Blue Sky laws in connection with the purchase and distribution of the
Securities by the Initial Purchasers and except where failure to obtain such consent, approval, authorization, order, registration or qualification would not have a Material Adverse Effect (such counsel need express no opinion in this subparagraph
(viii) as to compliance with the registration provisions of the Securities Act in relation to the Securities); 
 (xii) no
registration of the Securities or the Underlying Securities under the Securities Act, and no qualification of an indenture under the Trust Indenture Act with respect thereto, is required for the offer, sale and initial resale of the Securities by
the Initial Purchasers in the manner contemplated by this Agreement and the Time of Sale Information; 
 (xiii) none of the Company, the
Guarantors or any of their subsidiaries is and, after giving effect to the offering and sale of the Securities and the application of the proceeds thereof as described in the Time of Sale Information, will be required to register as an
“investment company” as defined in the Investment Company Act; 
 (xiv) when the Securities are issued and delivered pursuant
to this Agreement, none of the Securities will be of the same class (within the meaning of Rule 144A under the Securities Act) as securities of the Company that are listed on a national securities exchange registered under Section 6 of the
Exchange Act or that are quoted in a United States automated inter-dealer quotation system; 
 (xv) the statements set forth in the Time
of Sale Information and the Final Memorandum under the captions “Description of Capital Stock” and “Certain United States Federal Income Tax Considerations,” insofar as they constitute summaries of the legal matters, documents or
proceedings referred to therein, fairly present, in all material respects, the information called for with respect to such legal matters, documents or proceedings; 
  

 -21- 

 (xvi) the issue and sale of the Securities, the issuance by the Company of the Underlying
Securities upon conversion of the Securities and the compliance by the Company and the Guarantors with all of the provisions of the Securities, the Indenture, the Registration Rights Agreement and this Agreement with respect to the Securities and
the consummation of the transactions contemplated herein and therein will not (a) conflict with or result in a breach or violation of any of the terms or provisions of, or constitute a default under, any indenture, mortgage, deed of trust, loan
agreement or other agreement or instrument which is attached or incorporated by reference as an exhibit to the Company’s annual report on Form 10-K for the year ended December 31, 2005 (the “Annual Report”), any subsequent
quarterly report on Form 10-Q, or any Item 1.01 of any Form 8-K filed subsequent to the Annual Report, (b) result in any violation of the provisions of the Certificate of Incorporation or Bylaws of the Company or the certificate of
formation or limited liability company agreement of any Guarantor, or (c) result in a violation of, to the knowledge of such counsel, any order of any court or governmental agency or body having jurisdiction over the Company, the Guarantors or
any of their subsidiaries or any of their properties (except that such counsel need express no opinion with respect to compliance with the anti-fraud or similar provisions of any law, rule or regulation), except in the case of clauses (a) and
(c) for such breaches or violations that could not reasonably be expected to have a Material Adverse Effect or that could violate public policy relating thereto; 
 (xvii) each document incorporated by reference in the Time of Sale Information and the Final Memorandum (other than the financial statements,
including the notes thereto, and financial statement schedules and other financial and accounting information included therein, as to which such counsel need express no opinion), when they became effective or were filed with the Commission, as the
case may be, appear on their face to be appropriately responsive in all material respects to the requirements of the Exchange Act; and 
 In addition,
such counsel’s opinion shall include a statement (but not an opinion) as to the following: no facts have come to such counsel’s attention that have led such counsel to believe that (except for the financial statements and related schedules
and the financial data derived therefrom, including the notes and schedules thereto and the auditor’s report thereon or any other financial or accounting data included in, or excluded from, the Time of Sale Information or the Final Memorandum
as to which such counsel need express no belief) (x) the Time of Sale Information, as of the Time of Sale or as of the Closing Date, contained an untrue statement of a material fact or omitted 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 (y) the Final Memorandum, as of its date or as of the Closing Date, contained or contains an untrue statement of a material fact or omitted or
omits to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that such counsel does not assume any responsibility for the accuracy,
completeness or fairness of the statements contained in the Time of Sale Information and Final Memorandum 

  

 -22- 

 
(except for the applicable descriptions referenced in paragraphs (i), (ii), (v), (xi) and (xv)), and such counsel does not express any belief with respect to the
financial statements or other financial or accounting data contained in the Time of Sale Information and Final Memorandum. 
 (f) Latham
and Watkins LLP, outside counsel for the Company, shall have furnished to the Initial Purchasers their written opinion, dated the Closing Date, in form and substance satisfactory to the Initial Purchasers, to the effect that: 
 (i) the Securities and the Indenture conform in all material respects to the descriptions thereof in the Time of Sale Information and the Final
Memorandum; 
 (ii) the statements set forth in the Time of Sale Information and the Final Memorandum under the captions
“Description of Notes” and “Registration Rights Agreement”, insofar as they constitute summaries of the legal matters, documents or proceedings referred to therein, fairly present, in all material respects, the information called
for with respect to such legal matters, documents or proceedings. 
 (g) on the date hereof and also on the Closing Date,
Ernst & Young LLP shall have furnished to the Initial Purchasers letters, dated the respective dates of delivery thereof, in form and substance reasonably satisfactory to you, containing statements and information of the type customarily
included in accountants “comfort letters” to underwriters with respect to the financial statements and certain financial information contained in the Offering Memorandum; 
 (h) the Initial Purchasers shall have received on and as of the Closing Date an opinion of Vinson & Elkins L.L.P., counsel to the Initial
Purchasers, in form and substance satisfactory to you; 
 (i) the “lock-up” agreements, each substantially in the form of
Exhibit A hereto, between you and the officers and directors of the Company identified on Exhibit A-1 relating to sales and certain other dispositions of shares of Common Stock or certain other securities, delivered to you on or before the date
hereof, shall be in full force and effect on the Closing Date; 
 (j) the Underlying Securities shall have been approved for listing on
the New York Stock Exchange, subject only to notice of issuance; 
 (k) the Securities shall have been approved for trading on PORTAL,
subject only to notice of issuance at or prior to the time of purchase; 
 (l) the Initial Purchasers shall have received a counterpart
of the Registration Rights Agreement that shall have been executed and delivered by a duly authorized officer of the Company and each of the Guarantors; 
  

 -23- 

 (m) on or prior to the Closing Date the Company shall have furnished to the Initial Purchasers such
further certificates and documents as the Initial Purchasers or their counsel shall reasonably request; and 
 (n) on or after the date
hereof there shall not have occurred any of the following: (i) trading generally shall have been suspended or materially limited on or by the New York Stock Exchange (“NYSE”), (ii) trading of any securities of or
guaranteed by the Company shall have been suspended on any exchange or in any over the counter market, (iii) a general moratorium on commercial banking activities shall have been declared by either Federal or New York, Louisiana or Texas State
authorities, (iv) the outbreak or escalation of hostilities involving the United States or the declaration by the United States of a national emergency or war or (v) the occurrence of any other calamity or crisis or any change in
financial, political or economic conditions in the United States or elsewhere, if the effect of any such event specified in clause (iv) or (v) in the judgment of the Initial Purchasers makes it impracticable or inadvisable to proceed with
the offering or the delivery of the Securities being issued at such Closing Date on the terms and in the manner contemplated in the Time of Sale Information or to enforce contracts for the sale of the Securities. 
 The obligations of the Initial Purchasers to purchase Additional Securities hereunder are subject to the delivery to you on the Option Closing Date of such
documents as you may reasonably request including with respect to the good standing of the Company, the due authorization, execution, authentication and issuance of the Additional Securities and other matters related to the execution, authentication
and issuance of the Additional Securities. 
 7. Indemnification and Contribution. 
 (a) The Company and each of the Guarantors jointly and severally agree to indemnify and hold harmless the Initial Purchasers, and each person, if
any, who controls any Initial Purchaser within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act and each affiliate of any Initial Purchaser within the meaning of Rule 405 under the Securities Act, against
any losses, claims, damages or liabilities of any kind to which the Initial Purchasers or such controlling person may become subject under the Securities Act, the Exchange Act or otherwise, insofar as any 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 the Time of Sale Information, or the Final Memorandum (in each case, including the documents incorporated by reference therein), or any amendment or supplement thereto or in any other materials or information provided to investors
by, or with the written approval of, the Company in connection with the Offering, including any road show or investor presentations made to investors by the Company (whether in person or electronically) (“Marketing Materials”);

  

 -24- 

 (ii) the omission or alleged omission to state, in the Time of Sale Information or the Final
Memorandum (in each case, including the documents incorporated by reference therein) or any amendment or supplement thereto, or in any Marketing Materials, a material fact necessary to make the statements therein, in light of the circumstances under
which they were made, not misleading; or 
 (iii) and, subject to the provisions hereof, will reimburse, as incurred, the Initial
Purchaser and each such affiliate and controlling person for any legal or other expenses reasonably incurred by the Initial Purchasers, affiliates or such controlling person in connection with investigating, defending against or appearing as a
third-party witness in connection with any such loss, claim, damage, liability or action in respect thereof; provided, however, the Company and the Guarantors will not be liable in any such case to the extent (but only to the extent) that any
such loss, claim, damage or liability resulted solely from any untrue statement or alleged untrue statement or omission or alleged omission made in the Time of Sale Information or the Final Memorandum or any amendment or supplement thereto in
reliance upon and in conformity with written information concerning any Initial Purchaser furnished to the Company by such Initial Purchaser specifically for use therein. This indemnity agreement will be in addition to any liability that the Company
and the Guarantors may otherwise have to the indemnified parties. The Company and the Guarantors shall not be liable under this Section 7 for any settlement of any claim or action effected without their prior written consent, which shall not be
unreasonably withheld. 
 (b) Each Initial Purchaser agrees to indemnify and hold harmless each of the Company, each of the Guarantors
and their respective directors, officers and each person, if any, who controls the Company within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act against any losses, claims, damages or liabilities to which
the Company or any such director, officer or controlling person may become subject under the Securities Act, the Exchange Act or otherwise, insofar as such losses, claims, damages or liabilities (or actions in respect thereof) are finally judicially
determined by a court of competent jurisdiction in a final, unappealable judgment, to have resulted solely from (i) any untrue statement or alleged untrue statement of any material fact contained in the Time of Sale Information or the Final
Memorandum or any amendment or supplement thereto or (ii) the omission or the alleged omission to state, in the Time of Sale Information or the Final Memorandum or any amendment or supplement thereto, a material fact or necessary to make the
statements therein, in the 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 concerning such Initial Purchaser, furnished to the Company or its agents by the Initial Purchaser specifically for use therein; and, subject to the limitation set forth immediately preceding
this clause, will reimburse, as incurred, any legal or other expenses incurred by the Company, each of the Guarantors or any such director, officer or controlling person in connection with any such loss, claim, damage, liability or action in respect
thereof. This indemnity agreement will be in addition to any liability that each Initial Purchaser may otherwise have to the indemnified parties. 
  

 -25- 

 (c) As promptly as reasonably practicable after receipt by an indemnified party under this
Section 7 of notice of the commencement of any action for which such indemnified party is entitled to indemnification under this Section 7, such indemnified party will, if a claim in respect thereof is to be made against the indemnifying
party under this Section 7, notify the indemnifying party of the commencement thereof in writing; but the omission to so notify the indemnifying party (i) will not relieve such indemnifying party from any liability under paragraph
(a) or (b) above unless and only to the extent it is materially prejudiced as a result thereof and (ii) will not, in any event, relieve the indemnifying party from any obligations to any indemnified party other than the
indemnification obligation provided in paragraphs (a) and (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 determine, jointly with any other indemnifying party similarly notified, to assume the defense thereof, with counsel reasonably satisfactory to such indemnified party; provided,
however, that if (i) the use of counsel chosen by the indemnifying party to represent the indemnified party would present such counsel with a conflict of interest, (ii) the defendants in any such action include both the indemnified
party and the indemnifying party, and the indemnified party shall have been advised by counsel in writing that there may be one or more legal defenses available to it and/or other indemnified parties that are different from or additional to those
available to the indemnifying party, or (iii) the indemnifying party shall not have employed counsel reasonably satisfactory to the indemnified party to represent the indemnified party within a reasonable time after receipt by the indemnifying
party of notice of the institution of such action, then, in each such case, the indemnifying party shall not have the right to direct the defense of such action on behalf of such indemnified party or parties and such indemnified party or parties
shall have the right to select separate counsel to defend such action on behalf of such indemnified party or parties at the expense of the indemnifying party. After notice from the indemnifying party to such indemnified party of its election so to
assume the defense thereof and approval by such indemnified party of counsel appointed to defend such action, the indemnifying party will not be liable to such indemnified party under this Section 7 for any legal or other expenses, other than
reasonable costs of investigation, subsequently incurred by such indemnified party in connection with the defense thereof, unless (i) the indemnified party shall have employed separate counsel in accordance with the proviso to the immediately
preceding sentence (it being understood, however, that in connection with such action the indemnifying party shall not be liable for the expenses of more than one separate counsel (in addition to local counsel) in any one action or separate but
substantially similar actions in the same jurisdiction arising out of the same general allegations or circumstances, designated by the Initial Purchasers in the case of paragraph (a) of this Section 7 or the Company in the case of
paragraph (b) of this Section 7, representing the indemnified parties under such paragraph (a) or paragraph (b), as the case may be, who are parties to such action or actions) or (ii) the indemnifying party has authorized in
writing the employment of counsel for the indemnified party at the expense of the indemnifying party. After such notice from the indemnifying party to such indemnified party, the indemnifying party will not be liable for the costs and expenses of
any settlement of such action effected by such indemnified party without the prior written consent of the indemnifying party 

  

 -26- 

 
(which consent shall not be unreasonably withheld), unless such indemnified party waived in writing its rights under this Section 7, in which case the indemnified
party may effect such a settlement without such consent. 
 (d) No indemnifying party shall be liable under this Section 7 for any
settlement of any claim or action (or threatened claim or action) effected without its written consent, which shall not be unreasonably withheld, but if a claim or action settled with its written consent, or if there be a final judgment for the
plaintiff with respect to any such claim or action, each indemnifying party jointly and severally agrees, subject to the exceptions and limitations set forth above, to indemnify and hold harmless each indemnified party from and against any and all
losses, claims, damages or liabilities (and legal and other expenses as set forth above) incurred by reason of such settlement or judgment. No indemnifying party shall, without the prior written consent of the indemnified party (which consent shall
not be unreasonably withheld), effect any settlement or compromise of any pending or threatened proceeding in respect of which the indemnified party is or could have been a party, or indemnity could have been sought hereunder by the indemnified
party, unless such settlement (A) includes an unconditional written release of the indemnified party, in form and substance satisfactory to the indemnified party, from all liability on claims that are the subject matter of such proceeding and
(B) does not include any statement as to an admission of fault, culpability or failure to act by or on behalf of the indemnified party. 
 (e) In circumstances in which the indemnity agreement provided for in the preceding paragraphs of this Section 7 is unavailable to, or insufficient to hold harmless, an indemnified party in respect of any losses, claims, damages or
liabilities (or actions in respect thereof), each indemnifying party, in order to provide for just and equitable contributions, shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages or
liabilities (or actions in respect thereof) in such proportion as is appropriate to reflect (i) the relative benefits received by the indemnifying party or parties, on the one hand, and the indemnified party, on the other, from the offering or
(ii) if the allocation provided by the foregoing clause (i) is not permitted by applicable law, not only such relative benefits but also the relative fault of the indemnifying party or parties, on the one hand, and the indemnified party,
on the other, in connection with the statements or omissions or alleged statements or omissions that resulted in such losses, claims, damages or liabilities (or actions in respect thereof). The relative benefits received by the Company, on the one
hand, and the Initial Purchasers, on the other, shall be deemed to be in the same proportion as the total proceeds from the offering (before deducting expenses) received by the Company bears to the total discounts and commissions received by the
Initial Purchasers. The relative fault of the parties shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to
information supplied by the Company, on the one hand, or the Initial Purchasers, on the other, the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission or alleged statement
or omissions, and any other equitable considerations appropriate in the circumstances. 
  

 -27- 

 (f) The Company, the Guarantors and the Initial Purchasers agree that it would not be equitable if
the amount of such contribution determined pursuant to the immediately preceding paragraph (e) were determined by pro rata or per capita allocation or by any other method of allocation that does not take into account the equitable
considerations referred to in the first sentence of the immediately preceding paragraph (e). Notwithstanding any other provision of this Section 8, the Initial Purchaser shall not be obligated to make contributions hereunder that in the
aggregate exceed the total discounts, commissions and other compensation received by such Initial Purchasers under this Agreement, less the aggregate amount of any damages that such Initial Purchasers have otherwise been required to pay by reason of
the untrue or alleged untrue statements or the omissions or alleged omissions to state a material fact. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) shall be entitled to
contribution from any person who was not guilty of such fraudulent misrepresentation. For purposes of the immediately preceding paragraph (e), each person, if any, who controls an Initial Purchaser within the meaning of Section 15 of the
Securities Act or Section 20 of the Exchange Act and each affiliate of any Initial Purchaser within the meaning of Rule 405 under the Securities Act shall have the same rights to contribution as the Initial Purchaser, and each director of the
Company and the Guarantors, each officer of the Company and the Guarantors and each person, if any, who controls the Company or the Guarantors within the meaning of Section 15 of the Securities Act or Section 20 of the Exchange Act, shall
have the same rights to contribution as the Company and the Guarantors. 
 8. Effectiveness; Defaulting Initial Purchasers. This Agreement shall
become effective upon the execution and delivery hereof by the parties hereto. 
 If, on the Closing Date any one or more of the Initial Purchasers
shall fail or refuse to purchase Securities which it or they have agreed to purchase hereunder on such date, and the aggregate principal amount of Securities which such defaulting Initial Purchaser or Initial Purchasers agreed but failed or refused
to purchase is not more than one tenth of the aggregate principal amount of the Securities to be purchased on such date, the other Initial Purchasers shall be obligated severally in the proportions that the principal amount of Securities set forth
opposite their respective names in Schedule I (in the column titled “Total”) bears to the aggregate principal amount of Securities set forth opposite the names of all such non defaulting Initial Purchasers (in the column titled
“Total”), or in such other proportions as the Initial Purchasers may specify, to purchase the Securities which such defaulting Initial Purchaser or Initial Purchasers agreed but failed or refused to purchase on such date; provided
that in no event shall the principal amount of Securities that any Initial Purchaser has agreed to purchase pursuant to Section 1 be increased pursuant to this Section 9 by an amount in excess of one tenth of such principal amount of
Securities without the written consent of such Initial Purchaser. If, on the Closing Date any Initial Purchaser or Initial Purchasers shall fail or refuse to purchase Securities which it or they have agreed to purchase hereunder on such date, and
the aggregate principal amount of Securities with respect to which such default occurs is more than one tenth of the aggregate principal amount of Securities to be purchased on such date, and arrangements satisfactory to the Initial Purchasers and
the Company for the purchase of such Securities are not made within 36 hours after such default, this Agreement shall terminate without liability on the part of any non defaulting Initial Purchaser or the Company. In any such case either the Initial

  

 -28- 

 
Purchasers or the Company shall have the right to postpone the Closing Date, but in no event for longer than seven days, in order that the required changes, if any, in
the Final Memorandum or in any other documents or arrangements may be effected. Any action taken under this paragraph shall not relieve any defaulting Initial Purchaser from liability in respect of any default of such Initial Purchaser under this
Agreement. 
 9. Reimbursement. If this Agreement shall fail to close because of a condition not being met because of any failure or refusal on
the part of the Company to comply with the terms or to fulfill any of the conditions of this Agreement or if for any reason the Company shall be unable to perform its obligations under this Agreement or any condition of the Initial Purchasers’
obligations cannot be fulfilled, the Company agrees to reimburse the Initial Purchasers or such Initial Purchasers as have so terminated this Agreement with respect to themselves, severally, for all out of pocket expenses (including the reasonable
fees and expenses of their counsel) incurred by such Initial Purchasers in connection with this Agreement or the offering contemplated hereunder. For the avoidance of doubt, the Initial Purchasers shall not be entitled to reimbursement pursuant to
the provisions of this Section 9 for any failure to close due to Sections 6(n)(i), 6(n)(iii), 6(n)(iv) or 6(n)(v) hereof. 
 10. Parties.
This Agreement shall inure to the benefit of and be binding upon the Company, the Initial Purchasers, any controlling persons referred to herein and their respective successors and assigns. Nothing expressed or mentioned in this Agreement is
intended or shall be construed to give any other person, firm or corporation any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. No purchaser of Securities from the Initial Purchaser
shall be deemed to be a successor by reason merely of such purchase. 
 11. Notices. Any action by the Initial Purchasers hereunder may be taken
by the Representative on behalf of the Initial Purchasers, and any such action taken by the Representative shall be binding upon the Initial Purchasers. All notices and other communications hereunder shall be in writing and shall be deemed to have
been duly given if mailed or transmitted by any standard form of telecommunication. Notices to the Initial Purchasers shall be given to the Initial Purchasers c/o Jefferies & Company, Inc., 520 Madison Avenue, New York, New York 10022.
Notices to the Company shall be given to it at Hornbeck Offshore Services, Inc., Attention: Sam Giberga, 103 Northpark Blvd., Suite 300, Covington, Louisiana 70433 (fax (985) 727-2006). 
 12. Survival of Representations and Indemnities. The representations and warranties, covenants, indemnities and contribution and expense reimbursement
provisions and other agreements, representations and warranties of the Company and the Guarantors set forth in or made pursuant to this Agreement shall remain operative and in full force and effect, and will survive, regardless of (i) any
investigation, or statement as to the results thereof, made by or on behalf of the Initial Purchasers and (ii) acceptance of the Securities, and payment for them hereunder. 
 13. Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

 14. Counterparts. This Agreement may be signed in counterparts, each of which shall be an original and all of which together shall
constitute one and the same instrument. 
  

 -29- 

 If the foregoing is in accordance with your understanding, please sign and return seven counterparts hereof.

  

			
	Very truly yours,
	
	HORNBECK OFFSHORE SERVICES, INC.
		
	By:	 	 /s/ James O. Harp, Jr.

		 	James O. Harp, Jr.
		 	Executive Vice President and
Chief Financial Officer
	
	Guarantors:
	
	Energy Services Puerto Rico, LLC
	Hornbeck Offshore Services, LLC
	Hornbeck Offshore Transportation, LLC
	Hornbeck Offshore Operators, LLC
	HOS-IV, LLC
	Hornbeck Offshore Trinidad & Tobago, LLC
		
	By:	 	 /s/ James O. Harp, Jr.

		 	James O. Harp, Jr.
		 	Executive Vice President and
Chief Financial Officer

 The foregoing Purchase Agreement 
 is hereby confirmed and accepted 
 as of the date first above written. 
 JEFFERIES & COMPANY, INC. 
 BEAR, STEARNS & CO. INC. 
  

			
	By:	 	JEFFERIES & COMPANY, INC.
		
		 	Acting on behalf of themselves and as Representative of the Initial Purchasers

			
		
	By:	 	 /s/ Jay Levy

	Name:	 	Jay Levy
	Title:	 	Managing Director

  

 SCHEDULE I 
  

				
	 Initial Purchaser
	  	 Principal
 Amount
 of Securities

	 Jefferies & Company, Inc.
	  	$	110,000,000
	 Bear, Stearns & Co. Inc.
	  	$	110,000,000
		
	 Total
	  	$	220,000,000

  

 SCHEDULE II 
 Time of Sale Information 
 Term Sheet dated as of November 7, 2006 
  

 EXHIBIT A 
 [FORM OF LOCK-UP LETTER] 
 November [7], 2006 
 Jefferies & Company, Inc. 
 Bear, Stearns & Co. Inc. 
 c/o Jefferies & Company, Inc. 
 520 Madison Avenue 
 New York,
NY 10022 
 Dear Sirs and Mesdames: 
 The undersigned understands that Jefferies & Company, Inc. (“Jefferies”) and Bear, Stearns & Co. Inc. (“Bear Stearns”) propose to enter into a Purchase Agreement (“Purchase
Agreement”) with Hornbeck Offshore Services, Inc., a Delaware corporation (the “Company”), providing for the offering (the “Offering”) by the several Initial Purchasers, including Jefferies and Bear Stearns
(the “Initial Purchasers”), of Convertible Senior Notes due 2026 (the “Securities”). The Securities will be convertible into shares of common stock of the Company, par value $0.01 per share (the “Common
Stock”). 
 To induce the Initial Purchasers that may participate in the Offering to continue their efforts in connection with the Offering,
the undersigned hereby agrees that, without the prior written consent of Jefferies and Bear Stearns on behalf of the Initial Purchasers, it will not, during the period commencing on the date hereof and ending 90 days after the date of the final
offering memorandum relating to the Offering (the “Final Memorandum”), (1) 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, lend, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock or any securities convertible into or exercisable or exchangeable for Common Stock or (2) enter into any swap or other
arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Common Stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Common Stock
or such other securities, in cash or otherwise. 
 The restrictions set forth in the immediately preceding paragraph shall not apply to
(a) transfers of Common Stock by bona fide gift, will or intestacy, including without limitation transfers by gift, will or intestacy to family members of the undersigned or to a settlement or trust, established under the laws of any country
for the direct or indirect benefit of the undersigned or (b) transfers or sales of Common Stock pursuant to a plan complying with Rule 10b5-1 of the Regulations of the Securities Exchange Act of 1934, as amended, that has been entered into by
the undersigned prior to the date of this Letter Agreement, provided that in the event of any transfer pursuant to clause (a), the transferee shall enter into a lock-up agreement substantially in the form of this Letter Agreement covering the
remainder of the 90-day period referred to herein. In addition, the undersigned agrees that, without the prior written consent of Jefferies and Bear Stearns on behalf of the Initial Purchasers, it will not, during the period commencing on the date
hereof and ending 90 days after the date of the Final Memorandum, 

  

 A-1 

 
make any demand for or exercise any right with respect to, the registration of any shares of Common Stock or any security convertible into or exercisable or
exchangeable for Common Stock. The undersigned hereby further agrees that, prior to engaging in any transaction or taking any other action that is subject to the terms of this Letter Agreement during the restricted period, it will give notice
thereof to the Chief Financial Officer and the Chief Executive Officer of the Company (the “Authorized Officers”) and will not consummate such transaction or take any such action unless it has received written confirmation from one
of the Authorized Officers that such action is permitted under this Letter Agreement. The undersigned also agrees and consents to the entry of stop transfer instructions with the Company’s transfer agent and registrar against the transfer of
the undersigned’s shares of Common Stock except in compliance with the foregoing restrictions. 
 The undersigned understands that the Company and
the Initial Purchasers are relying upon this Letter Agreement in proceeding toward consummation of the Offering. The undersigned further understands that this Letter Agreement is irrevocable and shall be binding upon the undersigned’s heirs,
legal representatives, successors and assigns. 
 This Letter Agreement shall be governed by and construed in accordance with the laws of the State of
New York. Delivery of a signed copy of this letter by facsimile transmission shall be effective as delivery of the original hereof. 
 Whether or not
the Offering actually occurs depends on a number of factors, including market conditions. Any offering will only be made pursuant to a Purchase Agreement, the terms of which are subject to negotiation between the Company and the Initial Purchasers.

  

	
	Very truly yours,
	  
  

	(Name)
	  
  

	(Address)

  

 A-2 

 EXHIBIT A-1 
 PERSONS SUBJECT TO LOCK-UP 
  

			
	Directors:            	 	Larry D. Hornbeck
		 	Bruce W. Hunt
		 	Bernie W. Stewart
		 	Steven W. Krablin
		 	Patricia B. Melcher
		 	David A. Trice
		
	Officers:	 	Todd M. Hornbeck
		 	Carl G. Annessa
		 	James O. Harp, Jr.
		 	Samuel A. Giberga
		 	John S. Cook
		 	Timothy P. McCarthy

  

 A-1-1Form of Indemnification Agreement

 Exhibit 10.1 
 SILICON GRAPHICS, INC. 
 INDEMNIFICATION AGREEMENT 
 This Indemnification Agreement (“Agreement”) is entered into effective as of
                    , 2006 by and between Silicon Graphics, Inc., a Delaware corporation (the “Company”), and
                     (together with his/her estate, spouse, heirs, executors or personal or legal representatives, the
“Indemnitee”). 
 WHEREAS, the Company and Indemnitee recognize that it continues to be difficult for the Company to obtain
liability insurance for its directors, officers, employees, agents and fiduciaries, and that the cost of such insurance has significantly increased while the coverage of such insurance has generally been reduced; 
 WHEREAS, the Company and Indemnitee further recognize that there has been a substantial increase in corporate litigation in general, subjecting
directors, officers, employees, agents and fiduciaries to expensive litigation risks at the same time as the availability and coverage of liability insurance has been severely limited; 
 WHEREAS, Indemnitee does not regard the current protection available as adequate under the present circumstances, and the Indemnitee and other directors,
officers, employees, agents and fiduciaries of the Company may not be willing to continue to serve in such capacities without additional protection; 
 WHEREAS, the Company desires to attract and retain the services of highly qualified individuals, such as Indemnitee, to serve the Company and, in part, in order to induce Indemnitee to continue to provide services to
the Company, wishes to provide for the indemnification and advancing of expenses to Indemnitee to the maximum extent permitted by law; and 
 WHEREAS, in view of the considerations set forth above, the Company desires that effective upon the date referred to above, Indemnitee shall be indemnified by the Company as set forth herein. 
 NOW, THEREFORE, the Company and Indemnitee hereby agree as follows: 
 1. Indemnification. 
 (a) Indemnification of Expenses. The Company shall indemnify Indemnitee to the
fullest extent permitted by law if Indemnitee was or is or becomes a party to or witness or other participant in, or is threatened to be made a party to or witness or other participant in, a Claim by reason of (or arising in part out of) an
Indemnifiable Event against any and all Expenses, including all interest, assessments and other charges paid or payable in connection with or in respect of such Expenses. Such payment of 

 Expenses shall be made by the Company as soon as practicable but in any event no later than five (5) days after
written demand by Indemnitee therefor is presented to the Company. 
 (b) Reviewing Party. 
 (i) The obligations of the Company under Section l(a) shall be subject to the condition that the Reviewing Party shall not have determined (in a written
opinion, in any case in which the Independent Legal Counsel referred to in Section l(c) hereof is involved) that Indemnitee would not be permitted to be indemnified under applicable law. The obligation of the Company to make an advance payment of
Expenses to Indemnitee pursuant to Section 2(a) (an “Expense Advance”) shall be subject to the condition that, if, when and to the extent that the Reviewing Party determines that Indemnitee would not be permitted to be so indemnified
under applicable law, the Company shall be entitled to be reimbursed by Indemnitee (who hereby agrees to reimburse the Company) for all such amounts theretofore paid. 
 (ii) Notwithstanding the foregoing paragraph (b)(i), if Indemnitee has commenced or thereafter commences legal proceedings in a court of competent jurisdiction to secure a determination that Indemnitee should be
indemnified under applicable law, any determination made by the Reviewing Party that Indemnitee would not be permitted to be indemnified under applicable law shall not be binding, and Indemnitee shall not be required to reimburse the Company for any
Expense Advance, until final judicial determination is made with respect thereto (as to which all rights of appeal therefrom have been exhausted or lapsed). 
 (iii) Indemnitee’s obligation to reimburse the Company for any Expense Advance shall be unsecured and no interest shall be charged thereon. 
 (iv) If there has not been a Change in Control, the Reviewing Party shall be selected by the Board of Directors, and if there has been such a Change in
Control (other than a Change in Control which has been approved by a majority of the Company’s Board of Directors who were directors immediately prior to such Change in Control), the Reviewing Party shall be the Independent Legal Counsel
referred to in Section l(c) hereof. 
 (v) If there has been no determination by the Reviewing Party or if the Reviewing Party determines
that Indemnitee substantively would not be permitted to be indemnified in whole or in part under applicable law, Indemnitee shall have the right to commence litigation seeking an initial determination by the court or challenging any such
determination by the Reviewing Party or any aspect thereof, including the legal or factual bases therefor, and the Company hereby consents to service of process and to appear in any such proceeding. Any determination by the Reviewing Party otherwise
shall be conclusive and binding on the Company and Indemnitee. 
  

 -2- 

 (c) Change in Control. The Company agrees that if there is a Change in Control of the Company
(other than a Change in Control which has been approved by a majority of the Company’s Board of Directors who were directors immediately prior to such Change in Control) then with respect to all matters thereafter arising concerning the rights
of Indemnitee to payments of Expenses and Expense Advances under this Agreement or any other agreement or under the Company’s Certificate of Incorporation or Bylaws as now or hereafter in effect, the Company shall seek legal advice only from
legal counsel selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld) (“Independent Legal Counsel”). Such counsel, among other things, shall render its written opinion to the Company and
Indemnitee as to whether and to what extent Indemnitee would be permitted to be indemnified under applicable law. The Company agrees to pay the reasonable fees of the Independent Legal Counsel referred to above and to fully indemnify such counsel
against any and all expenses (including attorneys’ fees), claims, liabilities and damages arising out of or relating to this Agreement or its engagement pursuant hereto. 
 (d) Mandatory Payment of Expenses. Notwithstanding any other provision of this Agreement other than Section 9 hereof, to the extent that
Indemnitee has been successful on the merits of any cause of action or otherwise, including, without limitation, by dismissal of an action with or without prejudice, or by settlement, judgment, order or otherwise, in defense of any Claim referred to
in Section l(a) hereof or in the defense of any claim, issue or matter therein, Indemnitee shall be indemnified against all Expenses incurred by Indemnitee in connection therewith. 
 2. Expenses; Indemnification Procedure. 
 (a) Advancement of Expenses. The Company shall advance all Expenses incurred by Indemnitee. The advances to be made hereunder shall be paid by the Company to Indemnitee as soon as practicable but in any event no later than five
(5) days after written demand by Indemnitee therefor to the Company. 
 (b) Notice/Cooperation by Indemnitee. Indemnitee shall,
as a condition precedent to Indemnitee’s right to be indemnified under this Agreement, give the Company notice in writing as soon as reasonably practicable of any Claim made against Indemnitee for which indemnification will or could be sought
under this Agreement; provided, however, that the failure to give any such notice shall not disqualify Indemnitee from the right, or otherwise affect in any manner any right of Indemnitee, to receive payments or advancements of
Expenses unless the Company’s ability to defend in such Claim is materially and adversely prejudiced thereby, and then only to the extent thereof. Notice to the Company shall be directed to the Chief Executive Officer of the Company, with a
copy to the Company’s Secretary, at the address shown on the signature page of this Agreement (or such other address as the Company shall designate in writing to Indemnitee). In addition, Indemnitee shall give the Company such information and

  

 -3- 

 cooperation as it may reasonably require and as shall be within Indemnitee’s power. Promptly after receipt by
Indemnitee, or the Company, of any notice or document respecting the commencement of a Claim naming or involving Indemnitee and relating to an Indemnifiable Event with respect to which Indemnitee may be entitled to indemnification or an Expense
Advance pursuant to this Agreement, the party receiving the same shall notify the other party promptly in writing pursuant to Section 16 hereof of such receipt, together with copies of such notice or document. 
 (c) No Presumptions; Burden of Proof; Determination of Good Faith and Knowledge. 
 (i) For purposes of this Agreement, the termination of any Claim by judgment, order, settlement (whether with or without court approval)
or conviction, or upon a plea of nolo contendere, or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that
indemnification is not permitted by applicable law. In addition, neither the failure of the Reviewing Party to have made a determination as to whether Indemnitee has met any particular standard of conduct or had any particular belief, nor an actual
determination by the Reviewing Party that Indemnitee has not met such standard of conduct or did not have such belief, prior to the commencement of legal proceedings by Indemnitee to secure a judicial determination that Indemnitee should be
indemnified under applicable law, shall be a defense to Indemnitee’s claim or create a presumption that Indemnitee has not met any particular standard of conduct or did not have any particular belief. In connection with any determination by the
Reviewing Party or otherwise as to whether the Indemnitee is entitled to be indemnified hereunder, the burden of proof shall be on the Company to establish that Indemnitee is not so entitled. 
 (ii) For purposes of any determination of good faith, Indemnitee shall be deemed to have acted in good faith and in a manner Indemnitee
reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal action or proceeding, to have had no reasonable cause to believe Indemnitee’s conduct was unlawful, if Indemnitee’s action
was based on the records or books of account of the Company (or other applicable enterprise), including financial statements, or on information supplied to Indemnitee by the officers of the Company (or other applicable enterprise) in the course of
their duties, or on the advice of legal counsel for the Company (or other applicable enterprise) or the Board of Directors or counsel selected by any committee of the Board of Directors or on information or records given or reports made to the
Company (or other applicable enterprise) by an independent certified public accountant or by an appraiser, investment banker or other expert selected with reasonable care by the Company (or other applicable enterprise) or the Board of Directors or
any committee of the Board of Directors. The provisions of this 
  

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 Section 2(c) shall not be deemed to be exclusive or to limit in any way the other circumstances in
which the Indemnitee may be deemed to have met the applicable standard of conduct set forth in this Agreement. 
 (iii) The
knowledge and/or actions, or failure to act, of any director, officer, agent or employee of the Company shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 
 (d) Notice to Insurers. If, at the time of the receipt by the Company of a notice of a Claim pursuant to Section 2(b) hereof, the Company has
liability insurance in effect which may cover such Claim, the Company shall give prompt notice of the commencement of such Claim to the insurers in accordance with the procedures set forth in the respective policies. The Company shall thereafter
take all necessary or desirable action to cause such insurers to pay, on behalf of the Indemnitee, all amounts payable as a result of such Claim in accordance with the terms of such policies. 
 (e) Selection of Counsel. In the event the Company shall be obligated hereunder to pay the Expenses of any Claim, the Company, if appropriate,
shall be entitled to assume the defense of such Claim, with counsel approved by Indemnitee (“Retained Counsel”), upon the delivery to Indemnitee of written notice of its election so to do. After delivery of such notice, approval of
Retained Counsel by Indemnitee and the retention of Retained Counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees of separate counsel (“Separate Counsel”) subsequently incurred by
Indemnitee with respect to the same Claim; provided that, Indemnitee shall have the right to employ Separate Counsel in any such Claim (i) at Indemnitee’s expense or (ii) if (A) the employment of Separate Counsel by Indemnitee
has been previously authorized by the Company, (B) Indemnitee shall have reasonably concluded that there may be a conflict of interest between the Company and Indemnitee in the conduct of any such defense, or (C) the Company fails to
assume the defense of such Claim in a timely manner or the Company shall not continue to retain Retained Counsel to defend such Claim, then the fees and expenses of Indemnitee’s Separate Counsel shall be at the expense of the Company.

 (f) Defense by Company. In the event the Company has assumed the defense of a Claim pursuant to Section 2(e), the Company
shall not, without the prior written consent of Indemnitee, consent to the entry of any judgment against Indemnitee or enter into any settlement or compromise which (i) includes an admission of fault of Indemnitee, (ii) involves damages
other than solely the payment of monetary damages or (iii) does not include, as an unconditional term thereof, the full release of Indemnitee from all liability in respect of such Claim, which release shall be in form and substance reasonably
satisfactory to Indemnitee. 
  

 -5- 

 3. Additional Indemnification Rights; Nonexclusivity. 
 (a) Scope. The Company hereby agrees to indemnify the Indemnitee to the fullest extent permitted by law, notwithstanding that such indemnification
is not specifically authorized by the other provisions of this Agreement, the Company’s Certificate of Incorporation, the Company’s Bylaws or by statute. In the event of any change after the date of this Agreement in any applicable law,
statute or rule which expands the right of a Delaware corporation to indemnify a member of its board of directors or an officer, employee, agent or fiduciary, it is the intent of the parties hereto that Indemnitee shall enjoy by this Agreement the
greater benefits afforded by such change. In the event of any change in any applicable law, statute or rule which narrows the right of a Delaware corporation to indemnify a member of its board of directors or an officer, employee, agent or
fiduciary, such change, to the extent not otherwise required by such law, statute or rule to be applied to this Agreement, shall have no effect on this Agreement or the parties’ rights and obligations hereunder, except as set forth in
Section 8(a) hereof. 
 (b) Nonexclusivity. The indemnification provided by this Agreement shall be in addition to any rights to
which Indemnitee may be entitled under the Company’s Certificate of Incorporation, its Bylaws, any other agreement, any vote of stockholders or disinterested directors, the General Corporation Law of the State of Delaware, or otherwise. The
indemnification provided under this Agreement shall continue as to Indemnitee for any action taken or not taken while serving at the request of the Company in an indemnified capacity even though Indemnitee may have ceased to serve in such capacity.

 4. No Duplication of Payments. The Company shall not be liable under this Agreement to make any payment in connection with any
Claim made against Indemnitee to the extent Indemnitee has otherwise actually received payment (under any insurance policy, Certificate of Incorporation, Bylaw or otherwise) of the amounts otherwise indemnifiable hereunder. 
 5. Partial Indemnification. If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a
portion of Expenses incurred in connection with any Claim, but not, however, for all of the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion of such Expenses to which Indemnitee is entitled. 
 6. Mutual Acknowledgment. Both the Company and Indemnitee acknowledge that in certain instances, Federal law or applicable public policy may
prohibit the Company from indemnifying its directors, officers, employees, agents or fiduciaries under this Agreement or otherwise. Indemnitee understands and acknowledges that the Company has undertaken or may be required in the future to undertake
with the Securities and Exchange Commission to submit the question of indemnification to a court in certain circumstances for a determination of the Company’s right under public policy to indemnify Indemnitee. 
  

 -6- 

 7. Liability Insurance. The Company will use its best efforts to maintain, with financially sound
and reputable companies, insurance policies providing the Indemnitee with coverage for any Indemnifiable Event hereunder, such policies to be in such form and amounts and having such coverage as may be customary for companies engaged in the same or
a similar business and of a similar size as the Company, as certified by the Company’s insurance broker. The Company shall provide the Indemnitee with (a) evidence of such insurance and, upon request, copies of such policies and
(b) advance notice of any amendment, modification, cancellation or other changes relating thereto. To the extent the Company maintains liability insurance applicable to directors, officers, employees, agents or fiduciaries, Indemnitee shall be
named as an insured covered by such policies in such a manner as to provide Indemnitee the same rights and benefits as are accorded to the most favorably insured of the Company’s directors, if Indemnitee is a director; or of the Company’s
officers, if Indemnitee is not a director of the Company but is an officer; or of the Company’s key employees, agents or fiduciaries, if Indemnitee is not an officer or director but is a key employee, agent or fiduciary. 
 8. Exceptions. Any other provision herein to the contrary notwithstanding, the Company shall not be obligated pursuant to the terms of this
Agreement: 
 (a) Excluded Action or Omissions. To indemnify Indemnitee for acts, omissions or transactions to the extent Indemnitee
may not be indemnified under applicable law. 
 (b) Claims Initiated by Indemnitee. To indemnify or advance expenses to Indemnitee
with respect to Claims initiated or brought voluntarily by Indemnitee and not by way of defense, except (i) with respect to actions or proceedings brought to establish or enforce a right to indemnification under this Agreement or any other
agreement or insurance policy or under the Company’s Certificate of Incorporation or Bylaws now or hereafter in effect relating to Claims for Indemnifiable Events, (ii) in specific cases if the Board of Directors has approved the
initiation or bringing of such Claim, or (iii) as otherwise as required under Section 145 of the Delaware General Corporation Law, regardless of whether Indemnitee ultimately is determined to be entitled to such indemnification, advance
expense payment or insurance recovery, as the case may be. 
 (c) Lack of Good Faith. To indemnify Indemnitee for any expenses
incurred by the Indemnitee with respect to any proceeding instituted by Indemnitee to enforce or interpret this Agreement, if a court of competent jurisdiction determines that each of the material assertions made by the Indemnitee in such proceeding
was not made in good faith or was frivolous. 
  

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 (d) Claims Under Section 16. To indemnify Indemnitee for expenses and the payment of profits
arising from the purchase and sale by Indemnitee of securities in violation of Section 16 of the Securities Exchange Act of 1934, as amended, or the rules and regulations promulgated thereunder, or any similar successor statute, rules or
regulations. 
 9. Period of Limitations. No legal action shall be brought and no cause of action shall be asserted by or in the right
of the Company against Indemnitee after the expiration of two years from the date of accrual of such cause of action, and any claim or cause of action of the Company shall be extinguished and deemed released unless asserted by the timely filing of a
legal action within such two-year period; provided, however, that if any shorter period of limitations is otherwise applicable to any such cause of action, such shorter period shall govern. 
 10. Definitions 
 For the purposes of
this Agreement, the following terms shall have the meaning assigned to them hereunder: 
 (a) Change in Control shall mean any event in
which: 
 (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended),
other than a trustee or other fiduciary (acting in such capacity) holding securities under an employee benefit plan of the Company or a corporation owned directly or indirectly by the stockholders of the Company in substantially the same proportions
as their ownership of stock of the Company, is or becomes the “beneficial owner” (as defined in Rule 13d-3 under said Act), directly or indirectly, of securities of the Company representing more than 15% of the total voting power
represented by the Company’s then outstanding Voting Securities. 
 (ii) during any period of two consecutive years, individuals who at
the beginning of such period constitute the Board of Directors of the Company and any new directors whose election by the Board of Directors or nomination for election by the Company’s stockholders was approved by a vote of at least three
quarters (3/4) of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; or

 (iii) the stockholders of the Company approve a merger or consolidation of the Company with any other corporation other than a merger or
consolidation which would result in the Voting Securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into Voting Securities of the surviving entity) at least
80% of the total voting power represented by the Voting Securities of the Company or such surviving 
  

 -8- 

 entity outstanding immediately after such merger or consolidation, or the stockholders of the Company approve a plan of
complete liquidation of the Company or an agreement for the sale or disposition by the Company of (in one transaction or a series of related transactions) all or substantially all of the Company’s assets. 
 (b) Claim shall mean any threatened, pending or completed action, suit, appeal, proceeding, arbitration, or alternative dispute resolution
mechanism, or any hearing, inquiry or investigation that Indemnitee in good faith believes might lead to the institution of any such action, suit, appeal, proceeding, arbitration or alternative dispute resolution mechanism, whether civil, criminal,
administrative, investigative or other. 
 (c) Company shall mean and include, in addition to Silicon Graphics, Inc. and any successor
corporation, any constituent corporation (including any constituent of a constituent) absorbed in a consolidation or merger which, if its separate existence were continued, would have had power and authority to indemnify its directors, officers,
employees, agents or fiduciaries, so that if Indemnitee is or was a director, officer, employee, agent or fiduciary of such constituent corporation, or is or was serving at the request of such constituent corporation as a director, officer,
employee, agent or fiduciary of another corporation, partnership, joint venture, employee benefit plan, trust or other enterprise, Indemnitee shall stand in the same position under the provisions of this Agreement with respect to the resulting or
surviving corporation as Indemnitee would have with respect to such constituent corporation if its separate existence had continued. 
 (d)
Expenses shall mean and include any and all expenses, including attorneys’ fees (including retainers) and all other costs, expenses and obligations incurred in connection with investigating, defending, being a witness in or participating
in (including on appeal), or preparing to defend, be a witness in or participate in, any action, suit, proceeding, arbitration, alternative dispute resolution mechanism, hearing, inquiry or investigation, and any and all judgments, fines, penalties
and amounts paid in settlement (if such settlement is approved in advance by the Company, which approval shall not be unreasonably withheld) of any Claim and any federal, state, local or foreign taxes imposed on the Indemnitee as a result of the
actual or deemed receipt of any payments under this Agreement. 
 (e) Indemnifiable Event shall mean any event or occurrence related
to the fact that Indemnitee is or was a director, officer, partner, employee, trustee, agent or fiduciary of the Company, or any subsidiary of the Company, or is or was serving at the request of the Company as a director, officer, partner, employee,
trustee, agent or fiduciary of any other corporation, partnership, joint venture, trust or other enterprise, which imposes duties on, or involves services by, such director, officer, employee, agent or fiduciary while serving in such capacity, or by
reason of any action or inaction on the part of Indemnitee in such capacity. 
  

 -9- 

 (f) Reviewing Party shall mean any appropriate person or body consisting of a member or members of
the Company’s Board of Directors or any other person or body appointed by the Board of Directors who is not a party to the particular Claim for which Indemnitee is seeking indemnification, or Independent Legal Counsel. 
 (g) Voting Securities shall mean any securities of the Company that vote generally in the election of directors. 
 11. Remedies of Indemnitee. 
 (a)
Right to Petition Court. In the event that Indemnitee makes a request for payment of Expenses hereunder and the Company fails to make such payment or advancement in a timely manner pursuant to the terms of this Agreement, Indemnitee may
petition the Delaware Chancery Court to enforce the Company’s obligations under this Agreement. 
 (b) Burden of Proof. In any
judicial proceeding brought under Section 11(a) above, the Company shall have the burden of proving that Indemnitee is not entitled to payment of Expenses hereunder. 
 (c) Expenses. To the maximum extent permitted by law, the Company agrees to reimburse Indemnitee in full for any expenses incurred by Indemnitee in connection with investigating, preparing for, litigating,
defending or settling any action brought by Indemnitee under Section 11(a) above, or in connection with any claim or counterclaim brought by the Company in connection therewith, if Indemnitee is successful in whole or in part in connection with
any such action. 
 12. Representations and Warranties of the Company. The Company hereby represents and warrants to Indemnitee as
follows: 
 (a) Authority. The Company has all necessary power and authority to enter into, and be bound by the terms of, this
Agreement, and the execution, delivery and performance of the undertakings contemplated by this Agreement have been duly authorized by the Company. 
 (b) Enforceability. This Agreement, when executed and delivered by the Company in accordance with the provisions hereof, shall be a legal, valid and binding obligation of the Company, enforceable against the Company in accordance
with its terms, except as such enforceability may be limited by applicable bankruptcy, insolvency, moratorium, reorganization or similar laws affecting the enforcement of creditors’ rights generally. 
 13. Counterparts. This Agreement may be executed in one or more counterparts, each of which shall constitute an original. 
  

 -10- 

 14. Binding Effect; Successors and Assigns. This Agreement shall be binding upon and inure to the
benefit of and be enforceable by the parties hereto and their respective successors, assigns, including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business and/or assets of the
Company, spouses, heirs, and personal and legal representatives. The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all, or a substantial part, of the
business and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to
perform if no such succession had taken place. This Agreement shall continue in effect regardless of whether Indemnitee continues to serve as a director, officer, employee, agent or fiduciary (as applicable) of the Company or of any other enterprise
at the Company’s request. 
 15. Attorneys’ Fees. In the event that any action is instituted by Indemnitee under this
Agreement or under any liability insurance policies maintained by the Company to enforce or interpret any of the terms hereof or thereof, Indemnitee shall be entitled to be paid all Expenses incurred by Indemnitee with respect to such action,
regardless of whether Indemnitee is ultimately successful in such action, and shall be entitled to the advancement of Expenses with respect to such action, unless as a part of such action a court of competent jurisdiction over such action determines
that each of the material assertions made by Indemnitee as a basis for such action were not made in good faith or were frivolous. In the event of an action instituted by or in the name of the Company under this Agreement to enforce or interpret any
of the terms of this Agreement, Indemnitee shall be entitled to be paid all Expenses incurred by Indemnitee in defense of such action (including costs and expenses incurred with respect to Indemnitee’s counterclaims and cross-claims made in
such action), and shall be entitled to the advancement of Expenses with respect to such action, unless as a part of such action a court having jurisdiction over such action determines that each of Indemnitee’s material defenses to such action
were made in bad faith or were frivolous. 
 16. Notice. All notices, requests, demands and other communications under this Agreement
shall be in writing and shall be deemed duly given (i) if delivered by hand or courier service and signed for by the addressee, on the date of such receipt, or (ii) if mailed by domestic certified or registered mail with postage prepaid,
on the third business day after the date postmarked. Addresses for notice to either party are as shown on the signature page of this Agreement, or as subsequently modified by written notice. 
 17. Consent to Jurisdiction. The Company and Indemnitee each hereby irrevocably consent to the jurisdiction of the courts of the State of Delaware
for all purposes in connection with any action or proceeding which arises out of or relates to this Agreement and agree that any action instituted under this Agreement shall be commenced, prosecuted and continued only in the Court of Chancery of the
State of Delaware in and for New Castle County, which shall be the exclusive and only proper forum for adjudicating such a claim. 
  

 -11- 

 18. Severability. The provisions of this Agreement shall be severable in the event that any of the
provisions hereof (including any provision within a single section, paragraph or sentence) are held by a court of competent jurisdiction to be invalid, void or otherwise unenforceable, and the remaining provisions shall remain enforceable to the
fullest extent permitted by law. Furthermore, to the fullest extent possible, the provisions of this Agreement (including, without limitations, each portion of this Agreement containing any provision held to be invalid, void or otherwise
unenforceable, that is not itself invalid, void or unenforceable) shall be construed so as to give effect to the intent manifested by the provision held invalid, illegal or unenforceable. 
 19. Choice of Law. This Agreement shall be governed by and its provisions construed and enforced in accordance with the laws of the State of
Delaware, as applied to contracts between Delaware residents, entered into and to be performed entirely within the State of Delaware, without regard to the conflict of laws principles thereof. 
 20. Subrogation. In the event of any payment of Expenses under this Agreement, the Company shall be subrogated to the extent of such payment to
all of the rights of recovery of Indemnitee against other persons and Indemnitee shall execute all documents required and shall do all acts that may be necessary to secure such rights and to enable the Company effectively to bring suit to enforce
such rights. 
 21. Amendment and Termination. No amendment, modification, termination or cancellation of this Agreement shall be
effective unless it is in writing signed by both the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions hereof (whether or not similar) nor shall such waiver
constitute a continuing waiver. 
 22. Integration and Entire Agreement. This Agreement sets forth the entire understanding between
the parties hereto and supersedes and merges all previous written and oral negotiations, commitments, understandings and agreements relating to the subject matter hereof between the parties hereto (other than the indemnity provisions of the
Company’s certificate of incorporation and by-laws, each as amended). 
 23. No Construction as Employment Agreement. Nothing
contained in this Agreement shall be construed as giving Indemnitee any right to be retained in the employ of the Company or any of its subsidiaries, nor shall this Agreement impose any obligation on Indemnitee to continue Indemnitee’s service
to the Company beyond any period required by law or by other agreements or commitments of the parties, if any. Indemnitee may at any time and for any reason resign from such position (subject to any other contractual obligation or any obligation
imposed by operation of law), upon which event the Company will have no obligation to continue Indemnitee in such position. 
  

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 Notwithstanding the foregoing, this Agreement shall continue in force after Indemnitee has ceased to serve as a director
of the Company. 
 24. No Conflicts. The Company acknowledges and agrees that the Indemnitee may be engaged in one or more businesses
for compensation other than serving as a director of the Company and such other activities shall in no way, except to the extent required by law, relieve the Company of its indemnification obligations hereunder. The Company acknowledges and agrees
that the Indemnitee’s affiliates may be engaged in one or more businesses other than acting as a shareholder and creditor of the Company. Notwithstanding anything herein to the contrary, there shall be no restrictions on the Indemnitee or any
of the Indemnitee’s affiliates as to exclusivity or otherwise, the Indemnitee and any of the Indemnitee’s affiliates shall be free to pursue or invest in any business opportunities, whether as a shareholder, lender or in any other
capacity, without any obligation to the Company, except to the extent required by law, and the Company expressly waives any interest or expectancy in, or in being offered an opportunity to participate in, any business opportunities that are
presented to the Indemnitee or any of the Indemnitee’s affiliates. 
  

 -13- 

 IN WITNESS WHEREOF, the parties hereto have executed this Agreement effective as of the date first above
written. 
  

			
	SILICON GRAPHICS, INC.
		
	By:	 	  

		 	Vice President, General Counsel & Secretary

  

	
	Address:
	1200 Crittenden Lane
	Mountain View, CA 94043-1351

 AGREED TO AND ACCEPTED: 
 INDEMNITEE: 

	
	  
  

  

 -14-

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