ELEVENTH AMENDMENT TO FACILITY AGREEMENT

Exhibit 99.1

Execution Version

ELEVENTH AMENDMENT TO FACILITY AGREEMENT

This ELEVENTH AMENDMENT TO FACILITY AGREEMENT (this “Amendment”) dated as of June 18, 2019, is by and among MannKind Corporation, a Delaware corporation (the “Borrower”), MannKind LLC, a Delaware limited liability company (the “Guarantor,” and together with the Borrower, collectively, the “Obligors”), Deerfield Private Design Fund II, L.P. (“DPDF”) and Deerfield Private Design International II, L.P. (“DPDI” and, together with DPDF, the “Purchasers”). Capitalized terms used herein which are defined in the Facility Agreement (as defined below), unless otherwise defined herein, shall have the meanings ascribed to them in the Facility Agreement.

RECITALS:

A. The Obligors and the Purchasers have entered into that certain Facility Agreement, dated as of July 1, 2013, as amended by the First Amendment to Facility Agreement and Registration Rights Agreement, dated as of February 28, 2014, the Second Amendment to Facility Agreement, dated as of August 11, 2014, the Exchange and Third Amendment to Facility Agreement, dated as of June 29, 2017, the Fourth Amendment to Facility Agreement (the “Fourth Amendment”), dated as of October 23, 2017, the Fifth Amendment to Facility Agreement (the “Fifth Amendment”), dated as of January 15, 2018, the Exchange and Sixth Amendment to Facility Agreement (the “Sixth Amendment”), dated as of January 18, 2018, the Exchange and Seventh Amendment to Facility Agreement (the “Seventh Amendment”), dated as of June 8, 2018, the Exchange and Eighth Amendment to Facility Agreement (the “Eighth Amendment”), dated as of July 12, 2018, the Ninth Amendment to Facility Agreement (the “Ninth Amendment”), dated as of September 5, 2018, and the Tenth Amendment to Facility Agreement (the “Tenth Amendment”), dated as of September 26, 2018 (as the same may be further amended, modified, restated or otherwise supplemented from time to time, the “Facility Agreement”).

B. The Facility Agreement provides for the issuance of Notes in 4 Tranches of $40,000,000 per Tranche. Prior to the date hereof, the Purchasers have purchased the Tranche 1 Notes, the Tranche 2 Notes, the Tranche 3 Notes and the Tranche 4 Notes in the aggregate principal amount of $40,000,000 per Tranche.

C. The Facility Agreement also provides for the issuance of Tranche B Notes. An aggregate of $20,000,000 in principal amount of Tranche B Notes have been issued to the Purchasers.

D. Prior to the date hereof, (i) the Purchasers have converted all of the Tranche 2 Notes and the Tranche 3 Notes into Common Stock, (ii) the Borrower has repaid, converted, exchanged and/or otherwise satisfied the Tranche B Notes and (iii) the Borrower has repaid, converted, exchanged and/or otherwise satisfied a portion of the principal amounts under the Tranche 1 Notes and the Tranche 4 Notes, leaving $5,000,000 in principal amount of the Tranche 1 Notes and $3,995,000 in principal amount of the Tranche 4 Notes outstanding.

E. Pursuant to this Amendment, the parties hereto desire to amend the Facility Agreement to defer the $5,000,000 in principal amount of the Tranche 1 Notes (the “July 2019

Tranche 1 Principal Payment”) that is due and payable on July 1, 2019 until August 31, 2019, subject to the terms and conditions hereof.

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants and agreements contained herein, and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto, intending to be legally bound, agree as follows:

ARTICLE I.

AMENDMENTS TO FACILITY AGREEMENT

Notwithstanding anything to the contrary contained in the Facility Agreement (including Section 2.3 thereof) or the Notes, upon the terms and subject to the conditions set forth in this Amendment, effective as of the Effective Date (as defined below), the Facility Agreement is hereby amended to provide that the July 2019 Tranche 1 Principal Payment shall be deferred to, and shall be due and payable on, August 31, 2019. For the avoidance of doubt, the deposit of the Escrow Amount (as defined below) with the Escrow Agent (as defined below) in accordance with this Amendment and the Escrow Agreement shall not be deemed to reduce the principal amount of the Tranche 1 Notes or any other Notes for any purpose. Without limiting the generality of the foregoing, the entire outstanding principal amount of the Notes shall continue to bear interest in accordance with the Facility Agreement and the Notes until satisfied in full.

ARTICLE II.

REPRESENTATIONS AND WARRANTIES

Section 2.01. Representations and Warranties of the Purchasers. Each Purchaser hereby represents and warrants to the Borrower as of the date of this Amendment as follows:

(a) Organization and Good Standing. Such Purchaser is an entity duly incorporated or otherwise organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization, with the requisite power and authority to own and use its properties and assets and to carry on its business as currently conducted.

(b) Authority. Such Purchaser has the requisite corporate power and authority to enter into and to consummate the transactions contemplated by this Amendment, the Escrow Agreement and the other Transaction Documents (as amended hereby) and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of each of this Amendment and the Escrow Agreement by such Purchaser and the consummation by it of the transactions contemplated hereby, by the Escrow Agreement and by the other Transaction Documents (as amended hereby) have been duly authorized by all necessary action on the part of such Purchaser and no further action is required in connection herewith or therewith.

(c) Valid and Binding Agreement. This Amendment has been, and the Escrow Agreement will be, duly executed and delivered by such Purchaser and this Amendment constitutes, and, upon execution and delivery thereof, the Escrow Agreement will constitute, the valid and binding obligations of such Purchaser, enforceable against such Purchaser in accordance with their respective terms, except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and other laws of general

application affecting enforcement of creditors’ rights generally and (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies.

(d) Non-Contravention. The execution and delivery of this Amendment and the Escrow Agreement by such Purchaser and the performance by such Purchaser of its obligations hereunder, under the Escrow Agreement and under the other Transaction Documents (as amended hereby) does not and will not (i) violate any provision of such Purchaser’s certificate or articles of incorporation, bylaws or other organizational or charter documents, or (ii) conflict with or result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which such Purchaser is subject, or by which any of such Purchaser’s Notes is bound or affected.

(e) Ownership of the Notes. Such Purchaser is the record and beneficial owner of, and has good and valid title to, such Purchaser’s Notes, free and clear of all Liens, and has full power to dispose thereof and to exercise all rights thereunder (other than as restricted by this Amendment or the other Transaction Documents), without the consent or approval of, or any other action on the part of, any other Person. Other than the transactions contemplated by this Amendment, there is no outstanding contract, vote, plan, pending proposal or other right of any Person to acquire such Purchaser’s Notes or any portion thereof.

Section 2.02. Representations and Warranties of the Obligors. Each Obligor hereby represents and warrants to the Purchasers as of the date of this Amendment as follows:

(a) Organization and Good Standing. Each Obligor is an entity duly incorporated or otherwise organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization, with the requisite power and authority to own and use its properties and assets and to carry on its business as currently conducted.

(b) Authority. Each Obligor has the requisite corporate or limited liability company power and authority, as applicable, to enter into and to consummate the transactions contemplated by this Amendment, the Escrow Agreement and the other Transaction Documents (as amended hereby) and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of this Amendment and the Escrow Agreement by each Obligor and the consummation by it of the transactions contemplated hereby, by the Escrow Agreement and by the other Transaction Documents (as amended hereby) have been duly authorized by all necessary action on the part of each Obligor, and no further action of any Obligor, its board of directors, managers, members or stockholders, as applicable, is required in connection herewith or therewith.

(c) Consents. No Obligor is required to obtain any consent from, authorization or order of, or make any filing or registration with any Governmental Authority or any regulatory or self-regulatory agency or any other Person in order for it to execute, deliver or perform any of its respective obligations under or contemplated by this Amendment, the Escrow Agreement or the other Transaction Documents (as amended hereby), in each case, in accordance with the terms hereof or thereof.

(d) Valid and Binding Agreement. This Amendment has been, and the Escrow Agreement will be, duly executed and delivered by each Obligor and each of this Amendment and

the other Transaction Documents (as amended hereby) constitutes, and upon execution and delivery thereof the Escrow Agreement will constitute, the valid and binding obligations of each Obligor, enforceable against each Obligor in accordance with their respective terms, except (i) as limited by general equitable principles and applicable bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally and (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies.

(e) Non-Contravention. The execution and delivery of this Amendment and the Escrow Agreement and the performance by each Obligor of its obligations hereunder, under the Escrow Agreement and under the other Transaction Documents (as amended hereby) do not and will not (i) violate any provision of any Obligor’s organizational documents, (ii) conflict with or result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which any Obligor is subject, or by which any property or asset of any Obligor is bound or affected, (iii) require any permit, authorization, consent, approval, exemption or other action by, notice to or filing with, any court or other federal, state, local or other governmental authority or other Person, (iv) violate, conflict with, result in a material breach of, or constitute (with or without notice or lapse of time or both) a material default under, or an event which would give rise to any right of notice, modification, acceleration, payment, cancellation or termination under, or in any manner release any party thereto from any obligation under, any permit or contract to which any Obligor is a party or by which any of its properties or assets are bound, or (v) result in the creation or imposition of any Lien on any part of the properties or assets of any Obligor. No Event of Default exists.

(f) SEC Reports; NASDAQ. The Borrower has filed all reports, schedules, forms, statements and other documents required to be filed by it under the Securities Act and the Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years preceding the date hereof (the foregoing materials, including the exhibits thereto and documents incorporated by reference therein, being collectively referred to herein as the “SEC Reports”). None of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The Borrower is not in violation of the requirements of the NASDAQ Stock Market (“NASDAQ”) and has no knowledge of any facts or circumstances which could reasonably lead to delisting or suspension of trading of the Common Stock in the foreseeable future.

(g) Certain Fees. No brokerage or finder’s fees or commissions are or will be payable by the Borrower or any of its affiliates or representatives to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other Person with respect to the transactions contemplated by this Amendment. The Purchasers shall have no obligation with respect to any fees or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this Section 2.02(g) that may be due in connection with the transactions contemplated hereby.

ARTICLE III.

COVENANTS

Section 3.01. Disclosure; Confidentiality. On or before 7:00 a.m., New York time, on the first Business Day following the date of this Amendment, the Borrower shall file a Current Report on Form 8-K describing all the material terms of the transactions contemplated by this Amendment, attaching this Amendment and disclosing any other presently material non-public information (if any) provided or made available to any Purchaser (or any Purchaser’s agents or representatives) on or prior to the date hereof (the “Announcing 8-K Filing”). If the Effective Date shall not have occurred on or prior to June 30, 2019, then no later than 7:00 a.m. on July 1, 2019, the Borrower shall file a Current Report on Form 8-K disclosing such non-occurrence. From and after the filing of the Announcing 8-K Filing, the Borrower shall have disclosed all material, non-public information (if any) provided or made available to any Purchaser (or any Purchaser’s agents or representatives) by Borrower or any of its respective officers, directors, employees, Affiliates or agents in connection with the transactions contemplated by this Amendment or otherwise on or prior to the date hereof. Notwithstanding anything contained in this Amendment to the contrary and without implication that the contrary would otherwise be true, the Borrower expressly acknowledges and agrees that, from and after the Announcing 8-K Filing, no Purchaser shall have (unless expressly agreed to by a particular Purchaser after the date hereof in a written definitive and binding agreement executed by the Borrower and such particular Purchaser or customary oral (confirmed by e-mail) “wall-cross” agreement (it being understood and agreed that no Purchaser may bind any other Purchaser with respect thereto)), any duty of trust or confidence with respect to, or a duty not to trade on the basis of, any information regarding the Borrower.

Notwithstanding any affirmative disclosure obligations of the Borrower or the Guarantor pursuant to the terms of this Amendment or any of the other Transaction Documents or anything else to the contrary contained herein or therein, (a), subject to clause (b) below, each of the Borrower and the Guarantor shall not, and shall cause each of its officers, directors, employees, Affiliates and agents to not, provide any Purchaser with any material non-public information with respect to the Borrower from and after the filing of the Announcing Form 8-K Filing with the SEC without the express prior written consent of such Purchaser, and (b) in the event that the Borrower or the Guarantor believes that a notice or communication to any Purchaser contains material, nonpublic information with respect to the Borrower, the Borrower shall so indicate to such Purchaser prior to the delivery of such notice or communication, and such indication shall provide such Purchaser the means to refuse to receive such notice or communication (in which case any obligation of the Borrower or the Guarantor to provide such notice to such Purchaser under the Facility Agreement or this Amendment shall be deemed waived), and in the absence of any such indication, such Purchaser shall be allowed to presume that all matters relating to such notice or communication do not constitute material non-public information with respect to the Borrower and shall have no duty of trust or confidence with respect thereto.

Section 3.02. Taxes. The Borrower shall be responsible for paying all present or future stamp, court or documentary, intangible, recording, filing or similar Taxes that arise from any payment or issuance made under, from the execution, delivery, performance or enforcement of, or otherwise with respect to, this Amendment.

Section 3.03. Fees and Expenses. The Borrower shall promptly reimburse the Purchasers for all of their reasonable out-of-pocket, costs, fees and expenses, including legal fees and expenses, incurred in connection with the negotiation and drafting of this Amendment and the consummation of the transactions contemplated hereby.

ARTICLE IV.

ACKNOWLEDMENT OF THE BORROWER AND THE GUARANTOR

Section 4.01. The Borrower and the Guarantor irrevocably and unconditionally acknowledge, affirm and covenant to each Purchaser that:

(a) such Purchaser is not in default under any of the other Transaction Documents and has not otherwise breached any obligations to the Borrower or the Guarantor; and

(b) there are no offsets, counterclaims or defenses to the Obligations, including the liabilities and obligations of the Borrower under the Notes and other Transaction Documents (as amended hereby), or to the rights, remedies or powers of such Purchaser in respect of any of the Obligations or any of the Transaction Documents, and the Borrower and the Guarantor agree not to interpose (and each does hereby waive and release) any such defense, set-off or counterclaim in any action brought by such Purchaser with respect thereto.

ARTICLE V.

CONDITIONS PRECEDENT.

Section 5.01. Conditions Precedent. The deferral of the July 2019 Tranche 1 Principal Payment pursuant to Article I shall become effective, if at all, on such date and at such time (the “Effective Date”) prior to 5:00 p.m. (New York City time) on June 30, 2019 as of each of following conditions precedent shall have been satisfied (or waived in writing by the Purchasers):

(a) Escrow Agreement. The Borrower, Purchasers and an escrow agent (the “Escrow Agent”) selected by the Borrower and satisfactory to the Purchasers shall have entered into an escrow agreement (the “Escrow Agreement”), in form and substance satisfactory to the Borrower and Purchasers, that provides that an amount of cash equal to the outstanding amount of the July 2019 Tranche 1 Principal Payment shall be held in the Escrow Account (as defined below) until the July 2019 Tranche 1 Principal has been satisfied in full (subject to release thereof to the Purchasers on August 31, 2019 to satisfy the July 2019 Tranche 1 Payment to the extent it remains unsatisfied as of August 31, 2019).

(b) Escrow Deposit. Borrower shall have deposited with the Escrow Agent $5,000,000, in cash (the “Escrow Amount”), to be held in, and disbursed from, an account established and maintained by the Escrow Agent in accordance with the Escrow Agreement (the “Escrow Account”).

(c) Performance: No Default. The representations and warranties of the Borrower contained herein shall be true and correct as of the date hereof and as of 5:00 p.m. (New York City time) on June 30, 2019 as if made on such date, and the Borrower shall have performed

and complied with all agreements and conditions contained in the Facility Agreement and the other Transaction Documents (as amended hereby) to be performed by or complied with by the Borrower prior to June 30, 2019 in all material respects. Borrower shall certify in writing that the conditions set forth in this Section 6.01(c) shall have been satisfied as of June 30, 2019.

(d) Reimbursement of Expenses. The Borrower shall have reimbursed the Purchasers for all reasonable and documented out-of-pocket costs, fees and expenses, including legal fees and expenses, in connection with the negotiation, execution and closing of this Amendment.

For the avoidance of doubt, if any of the conditions set forth in this Section 5.01 shall not have been satisfied (or waived in writing by the Purchasers) by 5:00 p.m. (New York City time) on June 30, 2019, (i) the deferral of the July 2019 Tranche 1 Principal Payment pursuant to Article I shall not become effective, and (ii) the July 2019 Tranche 1 Principal Payment shall be due and payable directly to the Purchasers, in cash, on July 1, 2019.

ARTICLE VI.

MISCELLANEOUS

Section 6.01. Entire Agreement. This Amendment and the other Transaction Documents (as amended hereby) constitute the entire agreement, and supersede all other prior and contemporaneous agreements and understandings, both oral and written, among the Purchasers, the Borrower and Guarantor with respect to the subject matter hereof.

Section 6.02. Amendments and Waivers. No provision of this Amendment may be waived or amended except in a written instrument signed by the parties hereto. No waiver of any default with respect to any provision, condition or requirement of this Amendment shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in any manner impair the exercise of any such right.

Section 6.03. Successors and Assigns. All of the covenants and provisions of this Amendment by or for the benefit of the Purchasers or the Obligors shall bind and inure to the benefit of their respective successors and permitted assigns. No party hereunder may assign its rights or obligations hereunder without the prior written consent of the other parties hereto, except as otherwise provided in the other Transaction Documents (as amended hereby).

Section 6.04. Notices. Any notice to be given by any party to this Amendment shall be given in writing and be effected as provided in Section 6.1 of the Facility Agreement.

Section 6.05. Applicable Law; Consent to Jurisdiction.

(a) As part of the consideration and mutual promises being exchanged and given in connection with this Amendment, the parties hereto agree that all claims, controversies and disputes of any kind or nature arising under or relating in any way to the enforcement or interpretation of this Amendment or to the parties’ dealings, rights or obligations in connection herewith, including disputes relating to the negotiations for, inducements to enter into, or execution

of, this Amendment, and disputes concerning the interpretation, enforceability, performance, breach, termination or validity of all or any portion of this Amendment shall be governed by the laws of the State of New York without regard to its choice or conflicts of laws principles.

(b) The parties hereto agree that all claims, controversies and disputes of any kind or nature relating in any way to the enforcement or interpretation of this Amendment or to the parties’ dealings, rights or obligations in connection herewith, shall be brought exclusively in the state and federal courts sitting in The City of New York, borough of Manhattan. With respect to any such claims, controversies or disputes, each of the Parties hereby irrevocably:

(i) submits itself and its property, generally and unconditionally, to the personal jurisdiction of the aforesaid courts and agrees that it will not bring any action in any court or tribunal other than the aforesaid courts;

(ii) waives, and agrees not to assert, by way of motion, as a defense, counterclaim or otherwise, in any action or proceeding (A) any claim that it is not personally subject to the jurisdiction of the above named courts for any reason other than the failure to serve process in accordance with this Section 6.05, (B) any claim that it or its property is exempt or immune from jurisdiction of any such court or from any legal process commenced in such courts (whether through service of notice, attachment prior to judgment, attachment in aid of execution of judgment, execution of judgment or otherwise) and (C) to the fullest extent permitted by the applicable law, any claim that (1) the suit, action or proceeding in such court is brought in an inconvenient forum, (2) the venue of such suit, action or proceeding is improper or (3) this Amendment, or the subject matter hereof, may not be enforced in or by such courts; and

(iii) WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY DISPUTE ARISING OUT OF OR RELATING TO THIS AMENDMENT OR THE TRANSACTIONS CONTEMPLATED BY THIS AMENDMENT. EACH PARTY TO THIS AMENDMENT CERTIFIES AND ACKNOWLEDGES THAT (I) NO REPRESENTATIVE OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT SEEK TO ENFORCE THE FOREGOING WAIVER IN THE EVENT OF A LEGAL ACTION, (II) SUCH PARTY HAS CONSIDERED THE IMPLICATIONS OF THIS WAIVER, (III) SUCH PARTY MAKES THIS WAIVER VOLUNTARILY AND (IV) SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AMENDMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 6.05.

Notwithstanding the foregoing in this Section 6.05, a party may commence any action or proceeding in a court other than the above-named courts solely for the purpose of enforcing an order or judgment issued by one of the above-named courts.

Section 6.06. Counterparts; Effectiveness. This Amendment and any amendment hereto may be executed and delivered in any number counterparts, and by the different parties hereto in separate counterparts, each of which when executed shall be deemed to be an original, but all of which taken together shall constitute one and the same agreement. In the event that any signature

to this Amendment or any amendment hereto is delivered by facsimile transmission or by e-mail delivery of a “.pdf” format data file, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such facsimile or “.pdf” signature page were an original thereof. No party hereto shall raise the use of a facsimile machine or e-mail delivery of a “.pdf” format data file to deliver a signature to this Amendment or any amendment hereto or the fact that such signature was transmitted or communicated through the use of a facsimile machine or e-mail delivery of a “.pdf” format data file as a defense to the formation or enforceability of a contract, and each party hereto forever waives any such defense.

Section 6.07. No Third Party Beneficiaries. Nothing in this Amendment, express or implied, is intended to or shall confer upon any Person (other than the parties to this Amendment) any right, benefit or remedy of any nature whatsoever under or by reason of this Amendment.

Section 6.08. Specific Performance. The parties to this Amendment agree that irreparable damage would occur and that the parties to this Amendment would not have any adequate remedy at law in the event that any of the provisions of this Amendment were not performed in accordance with their specific terms or were otherwise breached. It is accordingly agreed that the parties to this Amendment shall be entitled to an injunction or injunctions to prevent breaches of this Amendment and to enforce specifically the terms and provisions of this Amendment, in each case without the necessity of posting bond or other security or showing actual damages, and this being in addition to any other remedy to which they are entitled at law or in equity.

Section 6.09. Effect of Headings. The section and subsection headings herein are for convenience only and not part of this Amendment and shall not affect the interpretation thereof.

Section 6.10. Severability. Whenever possible, each provision of this Amendment shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Amendment is held to be prohibited by or invalid under applicable law, such provision shall be ineffective only to the extent of such prohibition or invalidity, without invalidating the remainder of this Amendment so long as this Amendment as so modified continues to express, without material change, the original intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s).

Section 6.11. Avoidance of Doubt. The parties hereto hereby agree, for the avoidance of doubt, that (a) the term “Notes” as used in the Transaction Documents shall mean the Notes, as, and to the extent, amended by this Amendment, and (b) the term “Liabilities” and “Obligations” as used in the Transaction Documents shall include all liabilities and obligations under this Amendment, under the Facility Agreement (as amended hereby) under the Notes and under the other Transaction Documents (as amended hereby), and each of the parties hereto agrees not to take any contrary positions.

Section 6.12. Reservation of Rights. Neither of the Purchasers has hereby waived (a) any breach, default or Event of Default that may be continuing under any of the Transaction Documents or (b) any of such Purchaser’s rights or remedies arising from any such breach, default or Event of Default or otherwise available under the Transaction Documents or at law or in equity. Each of the Purchasers expressly reserves all such rights and remedies.

Section 6.13. Further Assurances. The Borrower hereby agrees, from time to time, as and when requested by any Purchaser, to execute and deliver or cause to be executed and delivered, all such documents, instruments and agreements, including secretary’s certificates, stock powers and irrevocable transfer agent instructions, and to take or cause to be taken such further or other action, as any Purchaser may reasonably deem necessary or desirable in order to carry out the intent and purposes of this Amendment and the other Transaction Documents (as amended hereby).

Section 6.14. No Strict Construction. The language used in this Amendment will be deemed to be the language chosen by the parties to express their mutual intent, and no rule of strict construction will be applied against any party.

Section 6.15. Interpretative Matters. Unless otherwise indicated or the context otherwise requires, (i) all references to Sections, Schedules, Appendices or Exhibits are to Sections, Schedules, Appendices or Exhibits contained in or attached to this Amendment, (b) words in the singular or plural include the singular and plural and pronouns stated in either the masculine, the feminine or neuter gender shall include the masculine, feminine and neuter, (c) the words “hereof,” “herein” and words of similar effect shall reference this Amendment in its entirety, and (d) the use of the word “including” in this Amendment shall be by way of example rather than limitation.

Section 6.16. Reaffirmation. Each of the Obligors, as issuer, debtor, grantor, pledgor, mortgagor, guarantor or assignor, or in other any other similar capacity in which such Person grants Liens or security interests in its property or otherwise acts as accommodation party or guarantor, as the case may be, hereby (i) acknowledges and agrees that it has reviewed this Amendment, (ii) ratifies and reaffirms all of its obligations, contingent or otherwise, under each of the Transaction Documents (as amended hereby) to which it is a party (after giving effect hereto), and (iii) to the extent such Person granted Liens on or security interests in any of its property pursuant to any such Transaction Document as security for or otherwise guaranteed the Obligations under or with respect to the Transaction Documents, ratifies and reaffirms such guarantee and grant of security interests and Liens and confirms and agrees that such security interests and Liens hereafter secure all of the Obligations (as amended hereby). Each Obligor hereby consents to this Amendment and the Escrow Agreement and acknowledges that each of this Amendment and the Escrow Agreement is a Transaction Document and that each of the other Transaction Documents (as amended hereby) remains in full force and effect and is hereby ratified and reaffirmed. Except as set forth in Article I above, neither this Amendment nor any prior amendment of any of the Transaction Documents shall be construed or deemed to be a satisfaction, novation, cure, modification, amendment or release of the Obligations, the Facility Agreement or any of the other Transaction Documents or establish a course of conduct with respect to future requests for amendments, modifications or consents.

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IN WITNESS WHEREOF, each party hereto has caused this Eleventh Amendment to Facility Agreement to be duly executed as of the date first written above.


		THE BORROWER:

		MANNKIND CORPORATION

		By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Executive Vice President

		THE GUARANTOR:

		MANNKIND LLC

		By: /s/ ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇▇▇▇▇▇▇
		Title: Director

[Signature page to Eleventh Amendment to Facility Agreement]


		PURCHASERS:

		DEERFIELD PRIVATE DESIGN FUND II, L.P.

		By: Deerfield Mgmt, L.P., its General Partner
		By: ▇.▇. ▇▇▇▇▇ Capital, LLC, its General Partner

		By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇
		Title: Authorized Signatory

		DEERFIELD PRIVATE DESIGN INTERNATIONAL II, L.P.

		By: Deerfield Mgmt, L.P., its General Partner
		By: ▇.▇. ▇▇▇▇▇ Capital, LLC, its General Partner

		By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇
		Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇
		Title: Authorized Signatory

[Signature page to Eleventh Amendment to Facility Agreement]

ELEVENTH AMENDMENT TO FACILITY AGREEMENT

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