SECURITY AGREEMENT

SECURITY AGREEMENT

(a) All capitalized terms used in this Agreement and not otherwise defined herein shall have the meanings assigned to them in the Loan Agreement.

(b) As used in this Agreement, the following terms shall have the following meanings:

(c) Where applicable and except as otherwise defined herein, terms used in this Agreement shall have the meanings assigned to them in the UCC.

(d) The rules of interpretation set forth in Section 1.02 of the Loan Agreement shall be applicable to this Agreement and are incorporated herein by this reference.

(a) As security for the payment and performance of the Obligations, Debtor hereby grants to Secured Party a security interest in all of Debtor’s right, title and interest in, to and under the following assets, wherever located and whether now existing or owned or hereafter acquired or arising: all goods, accounts, chattel paper (whether tangible or electronic), software, commercial tort claims, deposit accounts, documents, equipment (including all fixtures), general intangibles (including intellectual property), payment intangibles, instruments, inventory, investment property, letter-of-credit rights, money, records, and all other personal property and all products, proceeds and supporting obligations of any and all of the foregoing (collectively, the “Collateral”). Notwithstanding the foregoing, “Collateral” shall not include any rights or interests in any lease, license, contract, or agreement, as such, if under the terms of such lease, license, contract, or agreement, or applicable law with respect thereto, the valid grant of a security interest or lien therein to Secured Party is prohibited and such prohibition has not been or is not waived or the consent of the other party to such lease, license, contract, or agreement has not been or is not otherwise obtained or under applicable law such prohibition cannot be waived; provided, that the foregoing exclusion shall in no way be (i) construed to apply if any such prohibition would be rendered ineffective under the UCC or other applicable law (including the Bankruptcy Code) or principles of equity, (ii) construed so as to limit, impair or otherwise affect Secured Party’s unconditional continuing security interests in and liens upon any rights or interests of Debtor in or to the proceeds thereof, including monies due or to become due under any such lease, license, contract, or agreement (including any accounts), or (iii) construed to apply at such time as the condition causing such prohibition shall be remedied and, to the extent severable, “Collateral” shall include any portion of such lease, license, contract, or agreement that does not result in such prohibition; and provided, further, that Debtor shall obtain the consents with respect to leases, licenses, contracts and agreements as set forth in the Loan Agreement.

(b) Anything herein to the contrary notwithstanding, (i) Debtor shall remain liable under any Pledged Collateral Agreements and any other contracts, agreements and other documents included in the Collateral, to the extent set forth therein, to perform all of its duties and obligations thereunder to the same extent as if this Agreement had not been executed, (ii) the

exercise by Secured Party of any of the rights hereunder shall not release Debtor from any of its duties or obligations under any Pledged Collateral Agreements or other such contracts, agreements and other documents, and (iii) Secured Party shall not have any obligation or liability under any Pledged Collateral Agreements or other such contracts, agreements and other documents by reason of this Agreement, nor shall Secured Party be obligated to perform any of the obligations or duties of Debtor thereunder or to take any action to collect or enforce any Pledged Collateral Agreements or other such contract, agreement or other document.

(c) This Agreement shall create a continuing security interest in the Collateral which shall remain in effect until terminated in accordance with Section 18 hereof.

(d) Anything herein to the contrary notwithstanding, in no event shall the Collateral include, and Debtor shall not be deemed to have granted a security interest in, any of Debtor’s right, title or interest in any of the outstanding voting capital stock or other ownership interests of a Controlled Foreign Corporation (as defined below) in excess of 65% of the voting power of all classes of capital stock or other ownership interests of such Controlled Foreign Corporation entitled to vote; provided that (i) immediately upon the amendment of the Internal Revenue Code to allow the pledge of a greater percentage of the voting power of capital stock or other ownership interests in a Controlled Foreign Corporation without adverse tax consequences, the Collateral shall include, and Debtor shall be deemed to have granted a security interest in, such greater percentage of capital stock or other ownership interests of each Controlled Foreign Corporation; and (ii) if no adverse tax consequences to Debtor shall arise or exist in connection with the pledge of any Controlled Foreign Corporation, the Collateral shall include, and Debtor shall be deemed to have granted a security interest in, such Controlled Foreign Corporation. As used herein, “Controlled Foreign Corporation” shall mean a “controlled foreign corporation” as defined in the Internal Revenue Code.

(e) Secured Party agrees that, notwithstanding anything to the contrary herein, the security interest granted herein to Secured Party in and to restricted account No. 1610630624 held at JPMorgan Chase Bank, NA and the cash and cash equivalents held therein (collectively, the “Restricted Account”) shall be subject, subordinate and junior in all respects to the liens and security interests granted to JPMorgan Chase Bank, NA in the Restricted Account to secure Debtor’s reimbursement obligation as of the date hereof with respect to a letter of credit issued by JPMorgan Chase Bank, NA, for the benefit of Two Lincolnshire Office Venture, LLC in connection with the Company’s lease of the premises at Two Marriott Drive, Lincolnshire, Illinois.. The subordinations and priorities specified hereinabove with respect to any such Collateral are expressly conditioned upon the nonavoidability and perfection of the lien or security interest of JPMorgan Chase Bank, NA and, if such lien or security interest is not perfected or is avoidable, for any reason, then the subordinations and relative priority agreements provided for herein shall not be effective as to the Restricted Account. Debtor agrees that immediately upon any event or circumstance resulting in the release of the Restricted Account by JPMorgan Chase Bank, NA. (A) to cause such Person to take all action necessary to evidence such release immediately upon the occurrence of such event or circumstance, (B) to furnish to Secured Party at least ten (10) days prior written notice of any anticipated event or circumstance that would result in the release of the Restricted Account, and (iii) to cooperate with Secured Party in obtaining control (as defined in the UCC) of the Restricted Account.

(a) Debtor hereby authorizes Secured Party to file at any time and from time to time any financing statements describing the Collateral, and Debtor shall execute and deliver to Secured Party, and Debtor hereby authorizes Secured Party to file (with or without Debtor’s signature), at any time and from time to time, all amendments to financing statements, assignments, continuation financing statements, termination statements, security agreements relating to intellectual property Collateral, account control agreements, collateral access agreements, landlord waivers and other documents and instruments, in form reasonably satisfactory to Secured Party, and to take such other action, in each case as Secured Party may reasonably request, to perfect and continue perfection of, maintain the priority of or provide notice of the security interest of Secured Party in the Collateral and to accomplish the purposes of this Agreement. Without limiting the generality of the foregoing, Debtor ratifies and authorizes the filing by Secured Party of (i) any financing statements filed prior to the date hereof, and (ii) any financing statements describing the Collateral as “all assets” or “all personal property.”

(b) Debtor will cooperate with Secured Party in obtaining control (as defined in the UCC) of Collateral consisting of deposit accounts, investment property, letter of credit rights and electronic chatter paper.

(c) Upon request of the Secured Party, Debtor will join with Secured Party in notifying any third party who has possession of any Collateral of Secured Party’s security interest therein and obtaining an acknowledgment from the third party that it is holding the Collateral for the benefit of Secured Party; provided, however, this Section 3(c) shall not apply with respect to Collateral consisting of machines used by individuals for the purpose of home healthcare treatments.

(d) Upon request of Secured Party, Debtor (i) shall cause certificates to be issued in respect of any uncertificated Pledged Collateral, (ii) shall exchange certificated Pledged Collateral for certificates of larger or smaller denominations, and (iii) shall cause any securities intermediaries to show on their books that Secured Party is the entitlement holder with respect to any Pledged Collateral.

(e) Upon request of the Secured Party, Debtor will not create any chattel paper without placing a legend on the chattel paper acceptable to Secured Party indicating that Secured Party has a security interest in the chattel paper.

(a) This Agreement creates a security interest which is enforceable against the Collateral in which Debtor now has rights, and will create a security interest which is enforceable against the Collateral in which Debtor hereafter acquires rights at the time Debtor acquires any such rights; and (ii) Secured Party has a perfected and first priority security interest in the Collateral, in which Debtor now has rights, and will have a perfected and first priority security

interest in the Collateral in which Debtor hereafter acquires rights at the time Debtor acquires any such rights, in each case securing the payment and performance of the Obligations.

(b) Debtor’s chief executive office and principal place of business (as of the date of this Agreement) is located at the address set forth in Schedule 1; Debtor’s jurisdiction of organization and organizational ID number is set forth in Schedule 1; Debtor’s exact legal name is as set forth in the first paragraph of this Agreement; and all other locations where Debtor conducts business or Collateral is kept (as of the date of this Agreement) are set forth in Schedule 1. All trade names and trade styles under which Debtor conducts its business operations as of the date hereof are set forth in Schedule 2, and, except as set forth in Schedule 2, Debtor has not, at any time in the past: (i) been known as or used any other corporate, trade or fictitious name; (ii) changed its name; (iii) been the surviving or resulting corporation in a merger or consolidation; or (iv) acquired through asset purchase or otherwise any business of any Person.

(c) Debtor has rights in or the power to transfer the Collateral, and Debtor is the sole and complete owner of the Collateral or has the right to use the Collateral pursuant to a valid and enforceable license, free from any Lien other than Permitted Liens.

(d) All of Debtor’s United States and foreign patents and patent applications, copyrights (registered and material unregistered), applications for copyright registrations, trademarks, service marks and trade names (registered and material unregistered), and applications for registration of such trademarks, service marks and trade names, are set forth in Schedule 2.

(e) No control agreements exist with respect to any Collateral other than control agreements in favor of Secured Party.

(f) Debtor does not have or hold any chattel paper, letter-of-credit rights or commercial tort claims except as disclosed in writing to Secured Party.

(g) The names and addresses of all financial institutions and other Persons at which Debtor maintains its deposit and securities accounts, and the account numbers and account names of such accounts, are set forth in Schedule 1.

(h) Schedule 3 lists Debtor’s ownership interests in each of its Subsidiaries as of the date hereof.

(i) Debtor is and will be the legal record and beneficial owner of all Pledged Collateral, and has and will have good and marketable title thereto.

(j) Except as disclosed in writing to Secured Party, there are no Pledged Collateral Agreements which affect or relate to the voting or giving of written consents with respect to any of the Pledged Collateral. Each Pledged Collateral Agreement contains the entire agreement between the parties thereto with respect to the subject matter thereof, has not been amended or modified, and is in full force and effect in accordance with its terms. To the best knowledge of Debtor, there exists no violation or default under any Pledged Collateral Agreement by Debtor or the other parties thereto. Debtor has not knowingly waived or released

any of its rights under or otherwise consented to a departure from the terms and provisions of any Pledged Collateral Agreement.

(k) Debtor is not and will not become a lessee under any real property lease or party to any other agreement governing the location of Collateral at the premises of another Person pursuant to which the lessor or such other Person may obtain any rights in any of the Collateral except as disclosed in writing to Secured Party, and no such lease or other such agreement now prohibits, restrains, impairs or will prohibit, restrain or impair Debtor’s right to remove any Collateral from the premises at which such Collateral is situated, except for the usual and customary restrictions contained in such leases of real property, and such other agreements.

(a) Debtor shall appear in and defend any action, suit or proceeding which may affect its title to, or right or interest in, Secured Party’s right or interest in, the Collateral, and shall do and perform all reasonable acts that may be necessary and appropriate to maintain, preserve and protect the Collateral.

(b) Debtor shall comply with all laws, regulations and ordinances, and all policies of insurance, relating to the possession, operation, maintenance and control of the Collateral.

(c) Debtor shall give prompt written notice to Secured Party (and in any event not later than ten (10) days prior to any change described below in this subsection) of: (i) any change in the location of Debtor’s chief executive office or principal place of business; (ii) any change in the locations set forth in Schedule 1; (iii) any change in its name; (iv) any changes in its identity or structure in any manner which might make any financing statement filed hereunder incorrect or misleading; and (v) any change in its jurisdiction of organization; provided that Debtor shall not locate any Collateral outside of the United States nor shall Debtor change its jurisdiction of organization to a jurisdiction outside of the United States.

(d) Debtor shall carry and maintain in full force and effect, at its own expense and with financially sound and reputable insurance companies (not Affiliates of Debtor), insurance with respect to the Collateral in such amounts, with such deductibles and covering such risks as is customarily carried in accordance with sound business practice by companies engaged in the same or similar businesses and owning similar properties in the localities where Debtor operates, and in any event in amount, adequacy and scope satisfactory to the Board of Directors of Debtor. Insurance on the Collateral shall name the Secured Party as additional insured and as loss payee. Upon the request of Secured Party, Debtor shall furnish Secured Party from time to time with full information as to the insurance carried by it and, if so requested, copies of all such insurance policies. Debtor shall also furnish to Secured Party from time to time upon the request of Secured Party a certificate of Debtor’s insurance broker or other insurance specialist stating that all premiums then due on the policies relating to insurance on the Collateral have been paid and that such policies are in full force and effect. All insurance policies required under this subsection (d) shall provide that they shall not be terminated or cancelled nor shall any such policy be materially changed without at least 30 days’ prior written

notice (or 10 days’ prior written notice in the event of cancellation for non-payment of premium) to Debtor and Secured Party. Receipt of notice of termination or cancellation of any such insurance policies or reduction of coverages or amounts thereunder shall entitle Secured Party to renew any such policies, cause the coverages and amounts thereof to be maintained at levels required pursuant to the first sentence of this subsection (d) or otherwise to obtain similar insurance in place of such policies, in each case at the expense of Debtor. If the Collateral shall be materially damaged or destroyed, in whole or in part, by fire or other casualty, Debtor shall give prompt notice thereof to Secured Party. Additionally, Debtor shall in any event promptly give Secured Party notice of all reports made to insurance companies in respect of any claim in excess of $100,000. No settlement on account of any loss covered by insurance shall be made for less than insured value without the consent of Secured Party.

(e) Debtor shall keep accurate and complete books and records with respect to the Collateral, disclosing Secured Party’s security interest hereunder.

(f) Debtor shall not surrender or lose possession of (other than to Secured Party), sell, lease, or otherwise dispose of or transfer any of the Collateral or any right or interest therein, except as expressly permitted by the Loan Documents.

(g) Debtor shall keep the Collateral free of all Liens except Permitted Liens.

(h) Debtor shall pay and discharge all taxes, fees, assessments and governmental charges or levies imposed upon it with respect to the Collateral prior to the date on which penalties attach thereto, except to the extent such taxes, fees, assessments or governmental charges or levies are being contested in good faith by appropriate proceedings and are adequately reserved against in accordance with GAAP.

(i) Debtor shall maintain and preserve its legal existence, its rights to transact business and all other rights, franchises and privileges necessary or desirable in the normal course of its business and operations and the ownership of the Collateral, except in connection with any transactions expressly permitted by the Loan Agreement.

(j) Upon the request of Secured Party, Debtor shall (i) immediately deliver to Secured Party, or its designated agent, appropriately endorsed or accompanied by appropriate instruments of transfer or assignment, all documents and instruments, all certificated securities with respect to any Pledged Collateral, all letters of credit and all accounts and other rights to payment at any time evidenced by promissory notes, trade acceptances or other instruments, and (ii) cause certificates to be issued in respect of any uncertificated Pledged Collateral, (iii) provide such notice, obtain such acknowledgments and take all such other action, with respect to any investment property, chattel paper, documents and letter-of credit rights, as Secured Party shall reasonably specify.

(k) Debtor shall: (i) with such frequency as Secured Party may require, furnish to Secured Party such lists of customers and other information relating to the accounts and other rights to payment as Secured Party shall reasonably request; (ii) give only normal discounts, allowances and credits as to accounts and other rights to payment, in the ordinary course of business, according to normal trade practices utilized by Debtor, and enforce all

accounts and other rights to payment strictly in accordance with their terms, except that Debtor may grant any extension of the time for payment or enter into any agreement to make a rebate or otherwise to reduce the amount owing on or with respect to, or compromise or settle for less than the full amount thereof, any account or other right to payment, in the ordinary course of business, according to normal and prudent trade practices utilized by Debtor; and (iii) Debtor shall upon the request of Secured Party (A) at any time, notify all or any designated portion of the account debtors and other obligors on the accounts and other rights to payment of the security interest hereunder, and (B) upon the occurrence and during the continuance of an Event of Default, notify the account debtors and other obligors on the accounts and other rights to payment or any designated portion thereof that payment shall be made directly to Secured Party or to such other Persons or locations as Secured Party shall specify.

(l) Debtor shall, at such times as Secured Party shall reasonably request, prepare and deliver to Secured Party a report of all inventory, in form and substance satisfactory to Secured Party.

(m) Debtor shall (i) notify Secured Party of any material claim made or asserted against the Collateral by any Person and of any change in the composition of the Collateral or other event which could materially adversely affect the value of the Collateral or Secured Party’s Lien thereon; (ii) furnish to Secured Party such statements and schedules further identifying and describing the Collateral and such other reports and other information in connection with the Collateral as Secured Party may reasonably request, all in reasonable detail; and (iii) upon reasonable request of Secured Party make such demands and requests for information and reports as Debtor is entitled to make in respect of the Collateral.

(n) If and when Debtor shall obtain rights to any new patents, trademarks, service marks, trade names or registered or material unregistered copyrights, or otherwise acquire or become entitled to the benefit of, or apply for registration of, any of the foregoing, Debtor (i) shall promptly notify Secured Party, as the case may be, thereof and (ii) hereby authorizes Secured Party, as the case may be, to modify, amend, or supplement Schedule 2 and from time to time to include any of the foregoing and make all necessary or appropriate filings with respect thereto. Debtor shall promptly execute and deliver appropriate documents (in form and substance reasonably satisfactory to Secured Party) with respect to any such current or future registered copyrights for recording in the U.S. Copyright Office.

(o) Without limiting the generality of subsection (n), Debtor shall not register with the U.S. Copyright Office any unregistered copyrights (whether in existence on the date hereof or thereafter acquired, arising, or developed) unless Debtor provides Secured Party, as the case may be, with written notice of its intent to register such copyrights not less than 30 days prior to the date of the proposed registration.

(p) At the request of Secured Party, Debtor will obtain from each Person from whom Debtor leases any premises at which any Collateral is at any time present such collateral access, subordination, waiver, consent and estoppel agreements, as Secured Party may require, in form and substance satisfactory to Secured Party.

(q) Debtor shall give Secured Party immediate notice of the acquisition of any instruments or securities, or the establishment of any new deposit account or any new securities account with respect to any Pledged Collateral.

(r) (i) Debtor shall comply with all of its obligations under any Pledged Collateral Agreements to which it is a party and shall enforce all of its rights thereunder. (ii) Debtor will take all actions necessary to cause each Pledged Collateral Agreement relating to Collateral consisting of any and all limited liability and general partnership interests and limited liability company interests of any type or nature (“Partnership and LLC Collateral”) to provide specifically at all times that: (A) no Partnership and LLC Collateral shall be a security governed by Article 8 of the applicable Uniform Commercial Code; and (B) no consent of any member, manager, partner or other Person shall be a condition to the admission as a member or partner of any transferee that acquires ownership of the Partnership and LLC Collateral as a result of the exercise by Secured Party of any remedy hereunder or under applicable law. Additionally, Debtor agrees that no Partnership and LLC Collateral (A) shall be dealt in or traded on any securities exchange or in any securities market, (B) shall constitute an investment company security, or (C) shall be held by Debtor in a securities account. (iii) Debtor shall not vote to enable or take any other action to: (A) amend or terminate, or waive compliance with any of the terms of, any Pledged Collateral Agreement, certificate or articles of incorporation, bylaws or other organizational documents in any way that changes the rights of Debtor with respect to any Partnership and LLC Collateral or other Collateral constituting investment property in a manner adverse to the Secured Party or that adversely affects the validity, perfection or priority of Secured Party’s security interest therein.

(s) Debtor shall immediately notify Secured Party if Debtor holds or acquires (i) any commercial tort claims, (ii) any chattel paper, including any interest in any electronic chattel paper, other than chattel paper arising in the ordinary course of Debtor’s business in connection with leases by Debtor to its customers of inventory, or (iii) any letter-of-credit rights.

(t) In the event that Debtor acquires rights in any Subsidiary after the date hereof, it shall deliver to Secured Party a completed supplement to Schedule 3, reflecting such new Subsidiary and Debtor shall comply with the Section 5.02(m) of the Loan Agreement. Notwithstanding the foregoing, it is understood and agreed that the security interest of Secured Party shall attach to any such Subsidiary immediately upon Debtor’s acquisition of rights therein and shall not be affected by the failure of Debtor to deliver any such supplement to Schedule 3 or to comply with Section 5.02(m) of the Loan Agreement.

(a) Until Secured Party exercises its rights hereunder to collect the accounts and other rights to payment, Debtor shall endeavor in the first instance diligently to collect all amounts due or to become due on or with respect to the accounts and other rights to payment. At the request of Secured Party, upon the occurrence and during the continuance of any Event of Default, all remittances received by Debtor shall be held in trust for Secured Party and, in accordance with Secured Party’s instructions, remitted to Secured Party or deposited to an account of Secured Party in the form received (with any necessary endorsements or instruments of assignment or transfer).

(b) At the request of Secured Party, upon the occurrence and during the continuance of any Event of Default, Secured Party shall be entitled to receive all distributions and payments of any nature with respect to any Pledged Collateral or instrument Collateral, and all such distributions or payments received by the Debtor shall be held in trust for Secured Party and, in accordance with Secured Party’s instructions, remitted to Secured Party or deposited to an account designated by Secured Party in the form received (with any necessary endorsements or instruments of assignment or transfer). Further, upon the occurrence and during the continuance of any Event of Default any such distributions and payments with respect to any Pledged Collateral held in any securities account shall be held and retained in such securities account, in each case as part of the Collateral hereunder, and Secured Party shall have the right, following prior written notice to the Debtor, to vote and to give consents, ratifications and waivers with respect to any Pledged Collateral and instruments, and to exercise all rights of conversion, exchange, subscription or any other rights, privileges or options pertaining thereto, as if Secured Party were the absolute owner thereof; provided that Secured Party shall have no duty to exercise any of the foregoing rights afforded to it or them and shall not be responsible to the Debtor or any other Person for any failure to do so or delay in doing so.

(a) Any “Event of Default” as defined in the Loan Agreement or in any other Loan Document shall have occurred and be continuing;

(b) Any material impairment in the value of the Collateral or any impairment of the priority of Secured Party’s Lien hereunder.

(c) Any levy upon, seizure or attachment of any of the Collateral, the aggregate value of which exceeds $100,000, which shall not have been rescinded or withdrawn.

(d) Any loss, theft or substantial damage to, or destruction of, any material portion of the Collateral (unless within 10 days after the occurrence of any such event, Debtor furnishes to Secured Party evidence satisfactory to Secured Party that the amount of any such loss, theft, damage to or destruction of the Collateral is fully insured under policies naming Secured Party as an additional named insured or loss payee).

(a) Upon the occurrence and during the continuance of any Event of Default (or with respect to clause (vi) below, any Specified Default), Secured Party shall have, in addition to all other rights and remedies granted to it in this Agreement, the Loan Agreement, the Note or any other Loan Document, all rights and remedies of a secured party under the UCC and other applicable laws. Without limiting the generality of the foregoing, (i) Secured Party may peaceably and without notice enter any premises of Debtor, take possession of any the Collateral, remove or dispose of all or part of the Collateral on any premises of Debtor or elsewhere, or, in the case of equipment, render it nonfunctional, and otherwise collect, receive, appropriate and realize upon all or any part of the Collateral, and demand, give receipt for, settle, renew, extend, exchange, compromise, adjust, or xxx for all or any part of the Collateral, as Secured Party may determine; (ii) Secured Party may require Debtor to assemble all or any part of the Collateral and make it available to Secured Party at any place and time designated by Secured Party; (iii) Secured Party may use or transfer any of Debtor’s rights and interests in any intellectual property Collateral, by license, by sublicense (to the extent permitted by an applicable license) or otherwise, on such conditions and in such manner as Secured Party may determine (iv) Secured Party may secure the appointment of a receiver of the Collateral or any part thereof (to the extent and in the manner provided by applicable law); (v) Secured Party may sell, resell, lease, use, assign, license, sublicense, transfer or otherwise dispose of any or all of the Collateral in its then condition or following any commercially reasonable preparation or processing (utilizing in connection therewith any of Debtor’s assets, without charge or liability to Secured Party therefor) at public or private sale, by one or more contracts, in one or more parcels, at the same or different times, for cash or credit, or for future delivery without assumption of any credit risk, all as Secured Party deems advisable, and (vi) Secured Party may deliver a notice to any depository bank or securities intermediary to cause a shift of control to Secured Party of any or all of Debtor’s deposit accounts or securities accounts at such bank or securities intermediary and subject to a control agreement in Secured Party’s favor and may withdraw (or cause to be withdrawn) any and all funds and other Collateral from such deposit accounts or securities accounts; provided, however, that Debtor shall be credited with the net proceeds of sale only when such proceeds are finally collected by Secured Party. Debtor recognizes that Secured Party may be unable to make a public sale of any or all of the Pledged Collateral, by reason of prohibitions contained in applicable securities laws or otherwise, and expressly agrees that a private sale to a restricted group of purchasers for investment and not with a view to any distribution thereof shall be considered a commercially reasonable sale. Secured Party shall have the right upon any such public sale, and, to the extent permitted by law, upon any such private sale, to purchase the whole or any part of the Collateral so sold, free of any right or equity of redemption, which right or equity of redemption Debtor hereby releases, to the extent permitted

by law. Secured Party shall give Debtor such notice of any private or public sales as may be required by the UCC or other applicable law.

(b) For the purpose of enabling Secured Party to exercise its rights and remedies under this Section 9 or otherwise in connection with this Agreement, effective upon the occurrence and continuance of an Event of Default, Debtor hereby grants to Secured Party an irrevocable, non-exclusive and assignable license (exercisable without payment or royalty or other compensation to Debtor) to use, license or sublicense any intellectual property Collateral to the extent such grant is not prohibited with respect to such intellectual property Collateral.

(c) Secured Party shall not have any obligation to clean up or otherwise prepare the Collateral for sale. Secured Party shall not have any obligation to attempt to satisfy the Obligations by collecting them from any other Person liable for them, and Secured Party may release, modify or waive any Collateral provided by any other Person to secure any of the Obligations, all without affecting Secured Party’s rights against Debtor. Debtor waives any right it may have to require Secured Party to pursue any third Person for any of the Obligations. Secured Party may comply with any applicable state or federal law requirements in connection with a disposition of the Collateral and compliance will not be considered adversely to affect the commercial reasonableness of any sale of the Collateral. Secured Party may sell the Collateral without giving any warranties as to the Collateral. Secured Party may specifically disclaim any warranties of title or the like. This procedure will not be considered adversely to affect the commercial reasonableness of any sale of the Collateral. If Secured Party sells any of the Collateral upon credit, Debtor will be credited only with payments actually made by the purchaser, received by Secured Party and applied to the indebtedness of the purchaser. In the event the purchaser fails to pay for the Collateral, Secured Party may resell the Collateral, and Debtor shall be credited with the proceeds of the sale.

(d) To the extent Debtor uses the proceeds of any of the Obligations to purchase Collateral, Debtor’s repayment of the Obligations shall apply on a “first-in, first-out” basis so that the portion of the Obligations used to purchase a particular item of Collateral shall be paid in the chronological order the Debtor purchased the Collateral.

(e) The cash proceeds actually received from the sale or other disposition or collection of Collateral, and any other amounts received in respect of the Collateral the application of which is not otherwise provided for herein, shall be applied first, to the payment of the fees, costs and expenses of Secured Party in exercising or enforcing its rights hereunder and in collecting or attempting to collect any of the Collateral, and to the payment of all other amounts payable to Secured Party with respect to the Loan Documents (other than principal and interest); and second, to the payment of the Obligations. Any surplus thereof which exists after payment and performance in full of the Obligations shall be promptly paid over to Debtor or otherwise disposed of in accordance with the UCC or other applicable law. Debtor shall remain liable to Secured Party for any deficiency which exists after any sale or other disposition or collection of Collateral.

internal laws of the State of New York to the rights and duties of the parties, except as required by mandatory provisions of law and to the extent the validity or perfection of the security interests hereunder, or the remedies hereunder, in respect of any Collateral are governed by the law of a jurisdiction other than New York.

(b) THE PARTIES HERETO HEREBY KNOWINGLY, VOLUNTARILY, AND INTENTIONALLY WAIVE THE RIGHT TO A TRIAL BY JURY IN RESPECT OF ANY LITIGATION ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS, THIS WAIVER BEING A MATERIAL INDUCEMENT FOR EACH SUCH PARTY TO ENTER INTO THIS AGREEMENT AND THE OTHER LOAN DOCUMENTS.

(c) For purposes of any suit, action or other legal proceeding relating to this Agreement or the other Loan Documents or the enforcement of any provision of this Agreement or the Loan Documents, each party hereto hereby expressly and irrevocably submits and consents to the exclusive jurisdiction of the courts of the State of New York sitting in the borough of Manhattan and the United States District Court for the Southern District of New York for the purposes of any such suit, action or legal proceeding, including to enforce any settlement, order or award; and agrees that such state and federal courts shall be deemed to be a convenient forum; and waives and agrees not to assert (by way of motion, as a defense or otherwise), in any such legal proceeding commenced in such court any claim that such party is not subject personally to the jurisdiction of such court, that such legal proceeding has been brought in an inconvenient forum, that the venue of such proceeding is improper or that the Loan Documents or the subject matter thereof may not be enforced in or by such court.

(d) Each party hereto agrees to the entry of an order to enforce any resolution, settlement, order or award made pursuant to this Section by the courts of the State of New York sitting in the borough of Manhattan or the United States District Court for the Southern District of New York and in connection therewith hereby waives, and agrees not to assert by way of motion, as a defense, or otherwise, any claim that such resolution, settlement, order or award is inconsistent with or violative of the laws or public policy of the laws of the State of New York or any other jurisdiction.

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Exhibit 10.24

[Execution Copy]

THIS SECURITY AGREEMENT (this “Agreement”), dated as of March 31, 2006, is made between AKSYS, LTD., a Delaware corporation (“Debtor”), and DURUS LIFE SCIENCES MASTER FUND LTD., a Cayman Islands Exempted Company (the “Secured Party”).

Debtor and Secured Party hereby agree as follows:

Section 1. Definitions; Interpretation.

“Collateral” has the meaning set forth in Section 2.

“Event of Default” has the meaning set forth in Section 8.

“Loan Agreement” means the Bridge Loan Agreement, dated as the date hereof, between Debtor and Secured Party, as amended, amended and restated, modified, renewed, extended or replaced from time to time.

“Obligations” means the indebtedness, liabilities and other obligations of Debtor and any Guarantor to Secured Party under or in connection with the Loan Agreement, the Note and the other Loan Documents, including, the Loan, all interest accrued thereon, all fees due under the Loan Agreement and all other amounts payable by Debtor to Secured Party thereunder or in connection therewith, whether now or hereafter existing or arising, and whether due or to become due, absolute or contingent, liquidated or unliquidated, determined or undetermined, and including interest that accrues after the commencement by or against Debtor or any Guarantor of any Insolvency Proceeding naming such Person as the debtor in such proceeding.

“Partnership and LLC Collateral” has the meaning set forth in Section 5(r).

“Pledged Collateral” means Debtor’s (i) investment property and (ii) Partnership and LLC Collateral, including any ownership interests in any Subsidiaries of Debtor.

“Pledged Collateral Agreements” means any shareholders agreement, operating agreement, partnership agreement, voting trust, proxy agreement or other agreement or understanding with respect to any Pledged Collateral.

“Specified Default” means any Event of Default except that an Event of Default (as defined in the Loan Agreement) under Section 6.01(c) thereof shall be deemed an Event of

Default for purposes of this definition only if such Event of Default occurs as a result of the Company’s failure to perform or observe (i) any term, covenant or agreement contained in Xxxxxxx 0.00 xx xxxxxxx (x), (x), (x), (x), (x), (x) or (r) of Section 5.02 of the Loan Agreement, or (ii) any material term, covenant or agreement contained in Section 5.03 of the Loan Agreement or any such term, covenant or agreement involving an amount in excess of $25,000.

“UCC” means the Uniform Commercial Code as the same may, from time to time, be in effect in the State of New York.

Section 2. Security Interest.

Section 3. Financing Statements and Other Action.

Section 4. Representations and Warranties. Debtor represents and warrants to Secured Party that:

Section 5. Covenants. So long as any of the Obligations remain unsatisfied, Debtor agrees that:

Section 6. Rights of Secured Party.

Section 7. Authorization; Secured Party Appointed Attorney-in-Fact. Secured Party shall have the right to, in the name of Debtor, or in the name of Secured Party or otherwise, upon notice to but without the requirement of assent by Debtor, and Debtor hereby constitutes and appoints Secured Party (and any of Secured Party’s officers, employees or agents designated by Secured Party) as Debtor’s true and lawful attorney-in-fact, with full power and authority to: (i) sign and file any of the financing statements and other documents and instruments which must be executed or filed to perfect or continue perfected, maintain the priority of or provide notice of Secured Party’s security interest in the Collateral (including any notices to or agreements with any securities intermediary); (ii) assert, adjust, xxx for, compromise or release any claims under any policies of insurance; (iii) give notices of control, default or exclusivity (or similar notices) under any account control agreement or similar agreement with respect to exercising control over deposit accounts or securities accounts; and (iv) execute any and all such other documents and instruments, and do any and all acts and things for and on behalf of Debtor, which Secured Party may deem reasonably necessary or advisable to maintain, protect, realize upon and preserve the Collateral and Secured Party’s security interest therein and to accomplish the purposes of this Agreement. The foregoing power of attorney is coupled with an interest and irrevocable so long as the Obligations have not been paid and performed in full. Secured Party agrees that, except upon and during the continuance of an Event of Default, the power of attorney, or any rights granted to Secured Party, pursuant to clauses (ii), (iii) and (iv), shall not be exercised. Debtor hereby ratifies, to the extent permitted by law, all that Secured Party shall lawfully and in good faith do or cause to be done by virtue of and in compliance with this Section 7.

Section 8. Events of Default. Any of the following events which shall occur and be continuing shall constitute an “Event of Default”:

Section 9. Remedies.

Section 10. Certain Waivers. Debtor waives, to the fullest extent permitted by law, (i) any right of redemption with respect to the Collateral, whether before or after sale hereunder, and all rights, if any, of marshalling of the Collateral or other collateral or security for

the Obligations; (ii) any right to require Secured Party (A) to proceed against any Person, (B) to exhaust any other collateral or security for any of the Obligations, (C) to pursue any remedy in Secured Party’s power, or (D) to make or give any presentments, demands for performance, notices of nonperformance, protests, notices of protests or notices of dishonor in connection with any of the Collateral; and (iii) all claims, damages, and demands against Secured Party arising out of the repossession, retention, sale or application of the proceeds of any sale of the Collateral.

Section 11. Notices. All notices and other communications required or permitted hereunder shall be in writing and shall be deemed effectively given: (i) upon personal delivery to the party to be notified; (ii) when sent by confirmed telex or facsimile if sent during normal business hours of the recipient, if not, then on the next business day; (iii) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid; or (iv) two (2) days after deposit with a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the parties hereto at their respective addresses or facsimile numbers set forth below their names on the signature pages hereof, or, in all cases, as notified by such party from time to time at least ten (10) days prior to the effectiveness of such notice.

Section 12. No Waiver; Cumulative Remedies. No failure on the part of Secured Party to exercise, and no delay in exercising, any right, remedy, power or privilege hereunder shall operate as a waiver thereof, nor shall any single or partial exercise of any such right, remedy, power or privilege preclude any other or further exercise thereof or the exercise of any other right, remedy, power or privilege. The rights and remedies under this Agreement are cumulative and not exclusive of any rights, remedies, powers and privileges that may otherwise be available to Secured Party.

Section 13. Binding Effect. This Agreement shall be binding upon, inure to the benefit of and be enforceable by Debtor, Secured Party and their respective successors and assigns. Debtor may not assign, transfer, hypothecate or otherwise convey its rights, benefits, obligations or duties hereunder without the prior express written consent of Secured Party. Any such purported assignment, transfer, hypothecation or other conveyance by Debtor without the prior express written consent of Secured Party shall be void. Debtor acknowledges and agrees that in connection with an assignment of, or grant of a participation in, the Obligations, Secured Party may assign, or grant participations in, all or a portion of its rights and obligations hereunder. Upon any assignment of Secured Party’s rights hereunder, such assignee or assignees shall have, to the extent of such assignment, all rights of Secured Party hereunder. Debtor agrees that, upon any such assignment, such assignee may enforce directly, without joinder of Secured Party, the rights of Secured Party set forth in this Agreement. Any such assignee shall be entitled to enforce Secured Party’s rights and remedies under this Agreement to the same extent as if it were an original secured party named herein.

Section 14. Governing Law; Waiver of Jury Trial; Submission to Jurisdiction.

(a) This Agreement shall be construed in accordance with and governed by the internal laws of the State of New York (as permitted by Section 5-1401 of the New York General Obligations Law (or any similar successor provision)) without giving effect to any choice of law rule that would cause the application of the laws of any jurisdiction other than the

Section 15. Entire Agreement; Amendment. This Agreement and the other Loan Documents contain the entire agreement of the parties with respect to the subject matter hereof and supersede any prior agreements, commitments, drafts, communication, discussions and understandings, oral or written, with respect thereto. No amendment to this Agreement, or any waiver of any provision hereof, shall be effective unless it is in writing and signed by the Secured Party and (in the case of any amendment) the Debtor. Any such amendment, waiver or consent shall be effective only in the specific instance and for the specific purpose for which given.

Section 16. Severability. If any provision of this Agreement shall be prohibited by or invalid under any applicable law or regulation in any jurisdiction, it shall, as to such jurisdiction, be deemed modified to conform to the minimum requirements of such law or regulation, or, if for any reason it is not deemed so modified, it shall be ineffective and invalid

only to the extent of such prohibition or invalidity without affecting the remaining provisions of this Agreement, or the validity or effectiveness of such provision in any other jurisdiction.

Section 17. Counterparts. This Agreement may be executed in any number of counterparts and by different parties hereto in separate counterparts, each of which when so executed shall be deemed to be an original and all of which taken together shall constitute but one and the same agreement.

Section 18. Termination. Upon payment and performance in full of all Obligations (other than inchoate indemnity obligations and any other obligations which by their terms are to survive the termination of the Loan Documents), the security interest created under this Agreement shall terminate and Secured Party shall promptly execute and deliver to Debtor such documents and instruments reasonably requested by Debtor as shall be necessary to evidence termination of all security interests given by Debtor to Secured Party hereunder.

[Signature Pages Following]

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

	DEBTOR:

	AKSYS, LTD.


	By	/s/ Xxxxxxxx X. Xxxxx
		Name: Xxxxxxxx X. Xxxxx
		Title: CEO

	Address:

	Xxx Xxxxxxx Xxxxx
	Xxxxxxxxxxxx, XX 00000
	Attn:
	Fax: 000-000-0000

	*With a copy to*:

	Xxxxx X. Xxxx P.C.
	Xxxxxxxx & Xxxxx LLP
	000 Xxxx Xxxxxxxx Xxxxx
	Xxxxxxx, Xxxxxxxx 00000
	Fax: 000-000-0000

s-1

	SECURED PARTY:

	DURUS LIFE SCIENCES MASTER FUND LTD.

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

	Address:

	Durus Life Sciences Master Fund Ltd.
	c/o International Fund Services (Ireland) Ltd.
	0xx Xxxxx, Xxxxxxx Xxxxxx
	Xxxxxxxx Xxxx
	Xxxxxx 0, Xxxxxxx
	Attention: Xxxxx Xxxxx
	Fax: (000) 00-00-000-0000


	*With a copy to:*

	Xxxxx Xxxxxx, Esq.
	Xxxxxxxx & Xxxxxxxx LLP
	000 Xxxxxx Xxxxxx
	Xxx Xxxxxxxxx, Xxxxxxxxxx 00000
	Fax: 000-000-0000

	And with a copy to:

	Xxxx X. Xxxx, Esq.
	Xxxxxxx, Xxxx & Xxxxx
	000 Xxxxx Xxxxxx
	Xxx Xxxx, Xxx Xxxx 00000
	Fax: 000-000-0000

s-2

SCHEDULE 1
to the Security Agreement

1. Jurisdiction of Organization

2. Organizational ID Number

3. Chief Executive Office and Principal Place of Business

4. Other locations where Debtor conducts business or Collateral is kept

5. Deposit Accounts and Security Accounts

SCHEDULE 2
to the Security Agreement

1. Patents and Patent Applications.

2. Copyrights (Registered and Unregistered) and Copyright Applications.

3. Trademarks, Service Marks and Trade Names and Trademark, Service Xxxx and Trade Name Applications.

SCHEDULE 3
to the Security Agreement

PLEDGED SUBSIDIARIES

1. Pledged Collateral consisting of interests in each limited liability company that is a subsidiary of Debtor as follows:

Subsidiary	Number of Units	Date of Issuance of Units

2. Pledged Collateral consisting of interests in each general partnership, limited partnership, limited liability partnership or other partnership that is a subsidiary of Debtor as follows:

3. Pledged Collateral consisting of capital stock of each corporate subsidiary of Debtor being represented by stock certificates as follows:

Subsidiary

Type of
Partnership Interest
(e.g., general,
limited)

Date of Issuance
or Formation

Number of Units or
Other Ownership
Interests