Document:

QuickLinks
 -- Click here to rapidly navigate through this document

 

        Exhibit 10.2  

        Execution copy  

  
 

      VOTING AGREEMENT    
    

        This VOTING AGREEMENT ("Agreement") is
entered into as of July 19, 2011, by and between AMAG PHARMACEUTICALS,  INC., a Delaware
corporation ("Parent") and WARBURG
PINCUS PRIVATE EQUITY VIII, L.P. ("Stockholder"). 

 
 

RECITALS    
    

        A.    Stockholder is a holder of record and/or the "beneficial owner" (within
the meaning of Rule 13d-3 under the Securities Exchange Act of 1934) of certain shares of common stock of ALLOS
THERAPEUTICS, INC., a Delaware corporation (the "Company"). 

        B.    Parent, ALAMO ACQUISITION SUB, INC., a Delaware corporation and
wholly owned subsidiary of Parent ("Merger Sub"), and the Company are entering into an Agreement and Plan of Merger and Reorganization of even date
herewith (as may be amended, the "Merger Agreement") which provides (subject to the conditions set forth therein) for a "strategic business combination"
transaction between Parent and the Company by effecting a merger of Merger Sub into the Company (the "Merger") in accordance with the Merger Agreement,
pursuant to which each issued and outstanding share of the Company's common stock will be converted into the right to receive 0.1282 of a share of Parent's common stock. Upon consummation of the
Merger, Merger Sub will cease to exist, and the Company will become a wholly owned subsidiary of Parent. 

        C.    Stockholder is entering into this Agreement in order to induce Parent to enter into the Merger Agreement. 

 
 

AGREEMENT    
    

        The parties to this Agreement, intending to be legally bound, agree as follows: 

 SECTION 1. CERTAIN DEFINITIONS  

        For purposes of this Agreement: 

        (a)   "Company Common Stock" shall mean the common stock, par value $0.001 per share, of the Company. 

        (b)   Stockholder shall be deemed to "Own" or to have acquired
"Ownership" of a security if Stockholder: (i) is the record owner of such security; or (ii) is the "beneficial
owner" (within the meaning of Rule 13d-3 under the Securities Exchange Act of 1934) of such security. 

        (c)   "Person" shall mean any (i) individual, (ii) corporation, limited liability
company, partnership or other entity, or (iii) governmental authority. 

        (d)   "Subject Securities" shall mean: (i) all securities of the Company (including all shares
of Company Common Stock and all options, warrants and other rights to acquire shares of Company Common Stock) Owned by Stockholder as of the date of this Agreement; and (ii) all additional
securities of the Company (including all additional shares of Company Common Stock and all additional options, warrants and other rights to acquire shares of Company Common Stock) of which Stockholder
acquires Ownership prior to the termination of this Agreement. 

        (e)   A Person shall be deemed to have effected a "Transfer" of a security if
such Person directly or indirectly: (i) sells, pledges, encumbers, grants an option with respect to, transfers or disposes of such security or any interest in such security to any Person other
than Parent; (ii) enters into an agreement or commitment contemplating the possible sale of, pledge of, encumbrance of (other than restrictions imposed by applicable laws or legal requirements
or pursuant to this Agreement), grant of an option with respect to, transfer of or disposition of such security or any interest therein to any Person other 

 

than
Parent; or (iii) reduces such Person's beneficial ownership of, interest in or risk relating to such security. 

        (f)    Capitalized terms used but not otherwise defined in this Agreement have the meanings assigned to such terms in the Merger
Agreement. 

 SECTION 2. TRANSFER OF SUBJECT SECURITIES AND VOTING RIGHTS  

        2.1    Restriction on Transfer of Subject Securities.    Subject to Section 2.3, during the period from the
date of this Agreement through the termination of this Agreement pursuant to Section 8.1 (the "Restricted Period") Stockholder shall not,
directly or indirectly, cause or permit any Transfer of any of the Subject Securities to be effected. Without limiting the generality of the foregoing, during the Restricted Period, Stockholder shall
not tender, agree to tender or permit to be tendered any of the Subject Securities in response to or otherwise in connection with any tender or exchange offer. 

        2.2    Restriction on Transfer of Voting Rights.    Subject to Section 2.3, during the Restricted Period,
(a) none of the Subject Securities shall be deposited into a voting trust by Stockholder; and (b) no proxy shall be granted, and no voting agreement or similar agreement shall be entered
into with respect to any of the Subject Securities by Stockholder, other than (i) a proxy solicited by the Company to vote in a manner not inconsistent with the obligations of Stockholder set
forth in Section 3.1, (ii) the proxy granted to the Parent pursuant to Section 3.2 or (iii) a proxy authorized by Parent in writing. 

        2.3    Permitted Transfers.    None of the actions set forth in Section 2.1 or Section 2.2 shall be
prohibited if Parent agrees to such action in writing in its sole discretion. Further, none of the actions set forth in Section 2.1 or Section 2.2 shall be prohibited with respect to
(a) if Stockholder is an individual, a Transfer of Subject Securities by Stockholder (i) to any member of Stockholder's immediate family, or to a trust for the benefit of Stockholder or
any member of Stockholder's immediate family, or (ii) upon the death of Stockholder, or (b) if Stockholder is a partnership, corporation or limited liability company, a Transfer of
Subject Securities by Stockholder to one or more partners, subsidiaries or members of Stockholder or to an affiliated corporation under common control with Stockholder;  provided, however, that a Transfer referred to in this sentence and the immediately prior sentence shall
be permitted only if, as a precondition to such Transfer, the transferee agrees in writing to be bound by all of the terms of this Agreement. 

 SECTION 3. VOTING OF SHARES  

        3.1    Voting Covenant.    Stockholder hereby agrees that, during the Restricted Period, at any meeting of the
stockholders of the Company, however called, and in any action by written consent of the stockholders of the Company, Stockholder shall cause the Subject Securities to be voted (to the extent such
Subject Securities are entitled to vote): 

        (a)   in favor of the Merger, the execution and delivery by the Company of the Merger Agreement and the adoption and approval
of the Merger Agreement and the terms thereof, in favor of each of the other actions contemplated by the Merger Agreement and in favor of any action in furtherance of any of the foregoing; 

        (b)   in favor of any proposal to adjourn or postpone the meeting of the stockholders of the Company to a later date if there
are not sufficient votes for adoption of the Merger Agreement on the date on which such meeting is held; 

        (c)   against any action or agreement that would result in a breach of any representation, warranty, covenant or obligation of
the Company in the Merger Agreement; and 

        (d)   against the following actions (other than the Merger and the transactions contemplated or permitted by the Merger
Agreement): (i) any Acquisition Transaction; (ii) any change in a majority 

2

 

of
the board of directors of the Company; (iii) any amendment to the Company's certificate of incorporation or bylaws, which amendment would in any manner frustrate, prevent or nullify the
Merger, the Merger Agreement or any transactions contemplated by the Merger Agreement or change in any manner the voting rights of any class of the Company's capital stock; (iv) any material
change in the capitalization of the Company or the Company's corporate structure; (v) any Acquisition Proposal; and (vi) any other action which is intended, or could reasonably be
expected, to impede, interfere with, delay, postpone, discourage or adversely affect the Merger or any of the other transactions contemplated by the Merger Agreement or this Agreement. 

During
the Restricted Period, Stockholder shall not enter into any agreement or understanding with any Person to vote or give instructions in any manner inconsistent with clause "(a)", clause "(b)",
clause "(c)" or clause "(d)" of the preceding sentence. Except as set forth in this Section 3.1, nothing in this Agreement shall limit the right of Stockholder to vote in favor of, against or
abstain with respect to any matters presented to the Company's stockholders, including in connection with the election of directors. 

3.2   PROXY AND POWER OF ATTORNEY.  

        Stockholder hereby irrevocably (to the fullest extent permitted by law) appoints and constitutes Brian J.G. Pereira, MD, Joseph L. Farmer and Parent, and each of
them, the attorneys-in-fact and proxies of the Stockholder, with full power of substitution and resubstitution, to attend any meeting of the stockholders of the Company,
however called, on behalf of Stockholder with respect to the matters set forth in Section 3.1 hereof, to include the Subject Securities in any computation for purposes of establishing a quorum
at any such meeting, and to vote all Subject Securities, or grant consent or approval in respect of such Subject Securities, in connection with any meeting of the stockholders of the Company, however
called, and in connection with any action by written consent of the stockholders of the Company in a manner consistent with the provisions of Section 3.1, in each case, in the event that
(i) Stockholder fails to comply with the obligations of such Stockholder pursuant to Section 3.1 or (ii) any action is commenced, or any Order is entered, which challenges or
impairs the enforceability or validity of the obligations of Stockholder set forth in Section 3.1. Stockholder shall use its commercially reasonable efforts to cause any holder of record that
holds shares beneficially owned by the Stockholder to vote such shares in a manner consistent with Section 3.1. In addition, in the event of the occurrence of any event set forth in
clause (i) or (ii) above, as attorneys-in fact, (x) the foregoing persons shall be entitled to take any and all actions on behalf of the Stockholder, with the same
effect as if such actions where the actions of the Stockholder, to cause any holder of record that holds shares beneficially owned by the Stockholder to vote shares in a manner consistent with
Section 3.1 and (y) Stockholder shall take such further action or execute such other instruments as may be reasonably necessary to effectuate the
intent of this proxy and power of attorney, including providing written notice to the record holder of any shares beneficially owned by the Stockholder (with a copy to Parent) instructing the same to
cooperate with Parent and to execute a proxy in a form reasonably acceptable to Parent in order to give effect to the intent of Section 3.1 with respect to the shares held by such holder of
record on behalf of the Stockholder. Stockholder hereby affirms that this proxy and power of attorney is irrevocable, shall survive the Stockholder's death, liquidation or termination, is coupled with
an interest and is granted as security for the performance of the obligations of Stockholder under this Agreement. This proxy and power of attorney shall be binding upon the heirs, estate, executors,
personal representatives, successors and assigns of Stockholder (including any transferee of any of the Subject Securities) and shall terminate upon termination of this Agreement. This proxy and power
of attorney is given to secure the performance of the duties of Stockholder under this Agreement. 

3

 

 SECTION 4. NO SOLICITATION  

        Subject to Section 8.15, Stockholder agrees that, during the Restricted Period, Stockholder shall not, nor shall it authorize or
permit any of its general partners and managing members, and their respective officers, employees and representatives (the "Stockholder
Representatives") to, directly or indirectly: (a) solicit, initiate, knowingly encourage or knowingly facilitate the making, submission or announcement of any
Acquisition Proposal with respect to an Alamo Corporation or Acquisition Inquiry with respect to an Alamo Corporation; (b) knowingly furnish any information regarding any of the Alamo
Corporations to any Person in connection with or in response to an Acquisition Proposal with respect to an Alamo Corporation or Acquisition Inquiry with respect to an Alamo Corporation;
(c) engage in discussions or negotiations with any Person relating to any Acquisition Proposal with respect to an Alamo Corporation by such Person or Acquisition Inquiry with respect to an
Alamo Corporation by such Person; (d) approve, endorse or recommend any Acquisition Proposal with respect to an Alamo Corporation or Acquisition Inquiry with respect to an Alamo Corporation;
(e) enter into any letter of intent or similar document or any Contract contemplating or otherwise relating to any Acquisition Transaction or Acquisition Inquiry with respect to an Alamo
Corporation; (f) make any disclosure or communication to any Person (other than to any Stockholder Representative) (i) of or with respect to any non-public information
relating to the Merger, any of the transactions contemplated by the Merger Agreement, this Agreement, the Merger Agreement or any Acquisition Proposal in furtherance of or in connection with an
Acquisition Inquiry or Acquisition Proposal (without Parent's prior written approval) or (ii) indicating that Stockholder is against the Merger or any of the transactions contemplated by the
Merger Agreement, unless: (A) Stockholder shall have been advised by Stockholder's outside legal counsel that such disclosure or communication is required by applicable law; and (B) to
the extent reasonably practicable, prior to making such disclosure or communication, Stockholder shall have provided Parent with reasonable (and in no event less than 48 hours') advance written
notice of Stockholder's intent to make such disclosure or communication, the content of such disclosure or communication and the identities of the Persons to which such disclosure or communication is
intended to be made; (g) take any action that could result in the revocation or invalidation of the Proxy; or (h) agree or publicly propose to take any of the actions
referred to in this Section 4 or otherwise prohibited by this Agreement. Stockholder shall immediately cease and discontinue, and Stockholder shall direct the Stockholder Representatives, if
any, immediately to cease and discontinue, any existing discussions with any Person that relate to any Acquisition Proposal. 

 SECTION 5. REPRESENTATIONS AND WARRANTIES OF STOCKHOLDER  

        Stockholder hereby represents and warrants to Parent as follows: 

        5.1    Authorization, etc.    Stockholder has the full right, power, authority and capacity to execute and deliver
this Agreement and to perform Stockholder's obligations hereunder. This Agreement has been duly authorized, executed and delivered by Stockholder and constitutes a legal, valid and binding obligation
of Stockholder, enforceable against Stockholder in accordance with its terms, subject to (a) laws of general application relating to bankruptcy, insolvency and the relief of debtors, and
(b) rules of law governing specific performance, injunctive relief and other equitable remedies. If Stockholder is a corporation, then Stockholder is a corporation duly organized, validly
existing and in good standing under the laws of the jurisdiction in which it was organized. If Stockholder is a general or limited partnership, then Stockholder is a partnership duly organized,
validly existing and in good standing under the laws of the jurisdiction in which it was organized. If Stockholder is a limited liability company, then Stockholder is a limited liability company duly
organized, validly existing and in good standing under the laws of the jurisdiction in which it was organized. 

4

 

5.2   No Conflicts or Consents.  

        (a)   The execution and delivery of this Agreement by Stockholder do not, and the performance of this Agreement by Stockholder
will not: (i) conflict with or violate any law, rule, regulation, order, decree or judgment applicable to Stockholder or by which Stockholder or any of Stockholder's properties is or may be
bound or affected; or (ii) result in or constitute (with or without notice or lapse of time) any breach of or default under, or give to any other Person (with or without notice or lapse of
time) any right of termination, amendment, acceleration or cancellation of, or result (with or without notice or lapse of time) in the creation of any encumbrance or restriction on any of the Subject
Securities pursuant to, any Contract to which Stockholder is a party or by which Stockholder or any of Stockholder's affiliates or properties is or may be bound or affected; other than, in each case,
as would not reasonably be expected to prevent or materially delay or impair the consummation by Stockholder of the transactions contemplated by this Agreement. 

        (b)   The execution and delivery of this Agreement by Stockholder do not, and the performance of this Agreement by Stockholder
will not, require any consent or approval of any Person (i) other than such consents and approvals that have been obtained, (ii) any consent or approval required under the HSR Act and
expiration of any applicable waiting period thereunder or (iii) such consents or approvals as would not reasonably be expected to prevent or materially delay or impair the consummation by
Stockholder of the transactions contemplated by this Agreement. 

        (c)   If Stockholder is a married natural person and the Subject Securities of Stockholder constitute community property or
otherwise need spousal or other approval to be legal, valid and binding, this Agreement has been duly authorized, executed and delivered by, and constitutes a valid and binding agreement of,
Stockholder's spouse, enforceable against such spouse in accordance with its terms. 

        5.3    Title to Securities.    As of the date of this Agreement: (a) Stockholder Owns (free and clear of any
encumbrances or restrictions except as provided hereunder or pursuant to any applicable restrictions on transfer under the Securities Act of 1933, as amended) the number of outstanding shares of
Company Common Stock set forth under the heading "Shares Held of Record" on Schedule 1 to this
Agreement; (b) Stockholder holds (free and clear of any encumbrances or restrictions except as provided hereunder or pursuant to any applicable restrictions on transfer under the Securities Act
of 1933, as amended) the options, warrants and other rights to acquire shares of Company Common Stock set forth under the heading "Options and Other
Rights" on Schedule 1 to this Agreement; (c) Stockholder Owns the additional securities of the Company set forth
under the heading "Additional Securities Beneficially Owned" on Schedule 1 to this Agreement; and
(d) Stockholder does not directly or indirectly Own any shares of capital stock or other securities of the Company, or any option, warrant or other right to acquire (by purchase, conversion or
otherwise) any shares of capital stock or other securities of the Company, other than the shares and options, warrants and other rights set forth on  Schedule 1 to this Agreement. 

        5.4    Merger Agreement.    Stockholder understands and acknowledges that Parent is entering into the Merger Agreement
in reliance upon Stockholder's execution and delivery of this Agreement. 

 SECTION 6. REPRESENTATIONS AND WARRANTIES OF PARENT  

        Parent hereby represents and warrants to Stockholder as follows: 

        6.1    Authorization, etc.    Parent has the full right, power, authority and capacity to execute and deliver this
Agreement and to perform Parent's obligations hereunder. This Agreement has been duly authorized, executed and delivered by Parent and constitutes a legal, valid and binding obligation of Parent,
enforceable against Parent in accordance with its terms, subject to (a) laws of general application relating to bankruptcy, insolvency and the relief of debtors, and (b) rules of law
governing 

5

 

specific
performance, injunctive relief and other equitable remedies. Parent is a corporation duly organized, validly existing and in good standing under the laws of the state of Delaware. 

 SECTION 7. ADDITIONAL COVENANTS OF STOCKHOLDER  

        7.1    Stockholder Information.    Stockholder hereby agrees (i) to permit Parent and Merger Sub to publish and
disclose, if required under applicable law, in any publicly filed documents relating to the Merger, including the Form S-4, Stockholder's identity and ownership of shares of Company
Common Stock and the nature of Stockholder's commitments, arrangements and understandings under this Agreement. 

 SECTION 8. MISCELLANEOUS  

        8.1    Termination. Survival of Representations, Warranties and Agreements.    This Agreement and all rights and
obligations of the parties hereunder shall terminate upon the first to occur of (i) the termination of the Merger Agreement in accordance with its terms, (ii) the date of any
modification, waiver, change or
amendment of the Merger Agreement executed after the date hereof that is adverse to the Stockholder or that results in a (a) decrease in the Exchange Ratio or (b) change in the form of
consideration payable to Stockholder under the Merger Agreement, and (iii) the Effective Time. Upon termination of this Agreement, no party shall have any rights or obligations under this
Agreement and this Agreement shall become null and void; provided, however, that (x) nothing in this Section 8.1 shall relieve any party from any liability for any willful and material
breach of this Agreement prior to its termination, and (y) the provisions of this Article VIII shall survive any termination of this Agreement. 

        8.2    Expenses.    All costs and expenses incurred in connection with the transactions contemplated by this Agreement
shall be paid by the party incurring such costs and expenses; provided, however, that on the Closing
Date, Parent shall reimburse Stockholder for Stockholder's reasonable costs, fees and expenses, including the reasonable costs, fees and expenses of legal counsel, incurred by Stockholder in
connection with the negotiation, execution and delivery of this Agreement and the transactions contemplated by the Merger Agreement and any instrument delivered in connection therewith as well as any
amendments, modifications or waivers thereof, subject to a cap of twenty-five thousand dollars ($25,000) (the "Cap"). Reimbursement of such
fees and expenses shall be made by wire transfer of immediately available funds to an account or accounts designated by Stockholder, as set forth in a statement delivered to Parent on or prior to the
Closing Date, and thereafter Parent will pay, promptly upon receipt of a supplemental statement therefor, such additional reasonable costs, fees and expenses, if any (but subject to the Cap), as may
be incurred by Stockholder on or prior to the Closing Date in connection with such transactions. 

        8.3    Notices.    Any notice, request, demand or other communication required or permitted to be delivered to either
party under this Agreement shall be in writing and shall be deemed to have been duly given, delivered or made as follows: (a) if delivered by hand, when delivered; (b) if sent on a
business day by email before 5:00 p.m. (Massachusetts time) and receipt is confirmed, when transmitted; (c) if sent by email on a day other than a business day and receipt is confirmed,
or if sent by email after 5:00 p.m. (Massachusetts time) and receipt is confirmed, on the business day following the date on which receipt is confirmed; (d) if sent by registered,
certified or first class mail, the third business day after being sent; and (e) if sent by overnight delivery via a national courier service, two business days after being delivered to such
courier, in each case to the address or email set forth beneath the name of such party below (or to such other address or email as such party shall have specified in a written notice given to the
other parties hereto): 

        if
to Stockholder: 

at
the address set forth on Schedule 1 to this Agreement; and 

6

 

        if
to Parent: 

at
the address set forth in the Merger Agreement. 

        8.4    Severability.    Any term or provision of this Agreement that is invalid or unenforceable in any situation in
any jurisdiction shall not affect the validity or enforceability of the remaining terms and provisions hereof or the validity or enforceability of the offending term or provision in any other
situation or in any other jurisdiction. If the final judgment of a court of competent jurisdiction declares that any term or provision hereof is invalid or unenforceable, the parties hereto agree that
the court making such determination shall have the power to limit the term or provision, to delete specific words or phrases, or to replace any invalid or unenforceable term or provision with a term
or provision that is valid and enforceable and that comes closest to expressing the intention of the invalid or unenforceable term or provision, and this Agreement shall be enforceable as so modified.
In the event such court does not exercise the power granted to it in the prior sentence, the parties hereto agree to replace such invalid or unenforceable term or provision with a valid and
enforceable term or provision that will achieve, to the extent possible, the economic, business and other purposes of such invalid or unenforceable term or provision. 

        8.5    Entire Agreement.    This Agreement and any other documents delivered by the parties in connection herewith
constitute the entire agreement between the parties with respect to the subject matter hereof and thereof and supersede all prior agreements and understandings between the parties with respect
thereto. No addition to or modification of any provision of this Agreement shall be binding upon either party unless made in writing and signed by both parties. 

        8.6    Assignment; Binding Effect.    Except as provided herein, neither this Agreement nor any of the interests or
obligations hereunder may be assigned or delegated by either party hereto, and any attempted or purported assignment or delegation of any of such interests or obligations shall be void without the
prior written consent of the other party hereto. Subject to the preceding sentence, this Agreement shall be binding upon Stockholder and Stockholder's heirs, estate, executors and personal
representatives and Stockholder's successors and assigns, and shall inure to the benefit of the parties and their respective successors and assigns. Without limiting any of the restrictions set forth
in Section 2 or elsewhere in this Agreement, this Agreement shall be binding upon any Person to whom any Subject Securities are transferred. Nothing in this Agreement is intended to confer on
any Person (other than the parties hereto and their respective successors and assigns) any rights or remedies of any nature. 

        8.7    Independence of Obligations.    The covenants and obligations of Stockholder set forth in this Agreement shall
be construed as independent of any other agreement or arrangement between Stockholder, on the one hand, and the Company or Parent, on the other. The existence of any claim or cause of action by
Stockholder against the Company or Parent shall not constitute a defense to the enforcement of any of such covenants or obligations against Stockholder. 

        8.8    Specific Performance.    The parties agree that irreparable damage would occur in the event that any of the
provisions of this Agreement were not performed in accordance with its specific terms or were otherwise breached and that monetary damages, even if available, would not be an adequate remedy therefor.
The parties agree that, in the event of any breach or threatened breach by a party of any covenant or obligation contained in this Agreement, the other party shall be entitled, without proof of actual
damages (in addition to any other remedy that may be available to it, including monetary damages), to seek and to obtain (a) a decree or order of specific performance to enforce the observance
and performance of any covenant or obligation, and (b) an injunction restraining any breach or threatened breach. The parties further agree that neither party nor any other Person shall be
required to obtain, furnish or post any bond or similar instrument in connection with or as a condition to obtaining any remedy referred to in this Section 8.8, and the parties irrevocably
waive any right they may have to require the obtaining, furnishing or posting of any such bond or similar instrument. 

7

 

        8.9    Non-Exclusivity.    The rights and remedies of each party under this Agreement are not exclusive of
or limited by any other rights or remedies which it may have, whether at law, in equity, by contract or otherwise, all of which shall be cumulative (and not alternative). Without limiting the
generality of the foregoing, the rights, remedies, obligations and liabilities of the parties under this Agreement are in addition to each party's respective rights, remedies, obligations and
liabilities under common law requirements and under all applicable statutes, rules and regulations. 

        8.10    Governing Law; Jurisdiction; Waiver of Jury Trial.    

        (a)   This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, regardless of
the laws that might otherwise govern under applicable principles of conflicts of laws thereof. In any action between the parties arising out of or relating to this Agreement or any of the transactions
contemplated by this Agreement each of the parties irrevocably and unconditionally consents and submits to the jurisdiction and venue of the state and federal courts located in the State of Delaware. 

        (b)   EACH PARTY ACKNOWLEDGES THAT ANY CONTROVERSY WHICH MAY ARISE UNDER THIS AGREEMENT IS LIKELY TO INVOLVE COMPLICATED AND
DIFFICULT ISSUES, AND THEREFORE EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT SUCH PARTY MAY HAVE TO A TRIAL BY JURY IN RESPECT OF ANY LEGAL PROCEEDING ARISING OUT OF OR RELATING TO THIS AGREEMENT OR
ANY OF THE ACTIONS CONTEMPLATED BY THIS AGREEMENT. EACH PARTY ACKNOWLEDGES, AGREES AND CERTIFIES THAT NO REPRESENTATIVE, AGENT OR ATTORNEY OF THE OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE,
THAT SUCH OTHER PARTY WOULD, IN THE EVENT OF LITIGATION, SEEK TO PREVENT OR DELAY ENFORCEMENT OF SUCH WAIVER. EACH PARTY FURTHER ACKNOWLEDGES, AGREES AND CERTIFIES THAT: (i) SUCH PARTY
UNDERSTANDS AND HAS CONSIDERED THE IMPLICATIONS OF SUCH WAIVER; (ii) SUCH PARTY MAKES SUCH WAIVER VOLUNTARILY; AND (iii) SUCH PARTY HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY,
AMONG OTHER THINGS, THE MUTUAL WAIVERS AND CERTIFICATIONS IN THIS SECTION 8.10(b). 

        8.11    Counterparts.    This Agreement may be executed in separate counterparts, each of which when so executed and
delivered shall be an original, but all such counterparts shall together constitute one and the same instrument. The exchange of a fully executed Agreement (in counterparts or otherwise) by facsimile
or by electronic delivery shall be sufficient to bind the parties to the terms of this Agreement. 

        8.12    Captions.    The captions contained in this Agreement are for convenience of reference only, shall not be
deemed to be a part of this Agreement and shall not be referred to in connection with the construction or interpretation of this Agreement. 

        8.13    Waiver.    No failure on the part of either party to exercise any power, right, privilege or remedy under this
Agreement, and no delay on the part of either party in exercising any power, right, privilege or remedy under this Agreement, shall operate as a waiver of such power, right, privilege or remedy; and
no single or partial exercise of any such power, right, privilege or remedy shall preclude any other or further exercise thereof or of any other power, right, privilege or remedy. Neither party shall
be deemed to have waived any claim available to such party arising out of this Agreement, or any power, right, privilege or remedy of such party under this Agreement, unless the waiver of such claim,
power, right, privilege or remedy is expressly set forth in a written instrument duly executed and delivered on behalf of such party; and any such waiver shall not be applicable or have any effect
except in the specific instance in which it is given. 

8

 

8.14 Construction.  

        (a)   For purposes of this Agreement, whenever the context requires: the singular number shall include the plural, and vice
versa; the masculine gender shall include the feminine and neuter genders; the feminine gender shall include the masculine and neuter genders; and the neuter gender shall include masculine and
feminine genders. 

        (b)   The parties agree that any rule of construction to the effect that ambiguities are to be resolved against the drafting
party shall not be applied in the construction or interpretation of this Agreement. 

        (c)   As used in this Agreement, the words "include" and
"including," and variations thereof, shall not be deemed to be terms of limitation, but rather shall be deemed to be followed by the words
"without limitation." 

        (d)   Except as otherwise indicated, all references in this Agreement to "Sections" and "Exhibits" are intended to refer to
Sections of this Agreement and Exhibits to this Agreement. 

        8.15    No Limitation on Actions of Stockholder as Director or Officer.    In the event Stockholder or any Stockholder
Representative is an officer or director of the Company, Stockholder shall not be deemed to make any agreement or understanding in this Agreement in Stockholder's capacity as a director or officer or
with respect to such Stockholder Representative. Stockholder is entering into this Agreement solely in his or her capacity as the record holder and/or beneficial owner of the Stockholder's Subject
Securities, and nothing herein, including Section 4, shall limit or affect any actions taken (or omissions to take any action) by Stockholder or any Stockholder Representative in his or her
capacity as a director or officer of the Company. 

        8.16    Option Exercises.    Nothing in this Agreement shall require Stockholder to exercise any Company Options or
warrants to purchase Company Common Stock. 

        8.17    No Ownership Interest.    Except as otherwise provided herein, nothing contained in this Agreement shall be
deemed to vest in Parent any direct or indirect ownership or incidence of ownership of or with respect to the Subject Securities. All rights, ownership and economic benefits of and relating to the
Subject Securities shall remain vested in and belong to Stockholder, and Parent shall not have any authority to manage, direct, restrict, regulate, govern, or administer any of the policies or
operations of the Company or exercise any power or authority to direct Stockholder in the voting of any of the Subject Securities, except as otherwise provided herein. 

        8.18    Further Assurances.    The parties will execute and deliver, or cause to be executed and delivered, all
further documents and instruments and use their respective reasonable best efforts to take, or cause to be taken, all actions and to do, or cause to be done, all things necessary, proper or advisable
under applicable laws and regulations, to perform their respective obligations under this Agreement. 

        8.19    Antitrust Matters.    Parent shall cooperate with Stockholder and its affiliates in connection with a filing
(if required) by Stockholder and/or its affiliates of any necessary documentation required to effect any approvals, clearances and authorizations of all Governmental Bodies pursuant to the HSR Act in
connection with the transactions contemplated by this Agreement, the Marger Agreement (including the Merger), and/or the Stockholders Agreement. 

[Remainder of page intentionally left blank]

9

  
        IN WITNESS WHEREOF, Parent and Stockholder have caused this Agreement to be executed as of the date first written above. 

 

 

					
	 	 	 AMAG PHARMACEUTICALS, INC.
	

 	
 	
  By:	
 	
/s/ BRIAN J.G. PEREIRA

  Name: Brian J.G. Pereira, MD

Title: Chief Executive Officer

 

 

 

					
	 	 	 STOCKHOLDER
	

 	
 	

WARBURG PINCUS PRIVATE EQUITY VIII, L.P.
	

 	
 	

BY: WARBURG PINCUS PARTNERS,

LLC, ITS GENERAL PARTNER
	

 	
 	

BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
	

 	
 	
/s/ JONATHAN LEFF

  Signature
	

 	
 	
Jonathan Leff

  Printed Name
	

 	
 	
Partner

  Title
	

 	
 	
Address:  450 Lexington Ave.

                 34th Floor

                 New York NY 10017
	

 	
 	
Facsimile:

 

 

 Signature Page to Voting Agreement  

 

 
 

SCHEDULE 1
  
    OWNERSHIP OF SECURITIES    
    

 

 

											
	Name and Address of Stockholder

 
	 	Shares of

Company

Common Stock

Owned 	 	Options and

Other Rights 	 	Additional Securities

Beneficially Owned 	 
	 
	 	 	 	 	 	 	 	 	 	 

 

 A-1

QuickLinks

VOTING AGREEMENT

RECITALS

AGREEMENT

SCHEDULE 1 OWNERSHIP OF SECURITIESQuickLinks
 -- Click here to rapidly navigate through this document

 

 
 

  Exhibit 10.3    
    

 
 

Execution Copy    
    

 
 

  STOCKHOLDERS AGREEMENT
  
    July 19, 2011    
    

 

 

 
 

  STOCKHOLDERS AGREEMENT    
    

        This STOCKHOLDERS AGREEMENT, dated as of July 19, 2011 (this "Agreement"), is
entered into by and between AMAG Pharmaceuticals, Inc. (the "Company") and Warburg Pincus Private Equity VIII, L.P. (the
"Stockholder"). 

        WHEREAS,
concurrently herewith, the Company, Alamo Acquisition Corp., a Delaware corporation and wholly-owned subsidiary of the Company ("Merger
Sub"), and Allos Therapeutics, Inc. ("Allos") have entered into an Agreement and Plan of Merger and Reorganization (the
"Merger Agreement"), dated the date hereof, pursuant to which, subject to satisfaction or waiver of the conditions therein, Merger Sub will merge with
and into Allos (the "Merger"), and the Company will issue shares of its Common Stock, par value $0.01 per share (the
"Shares"), to the Stockholder; 

        WHEREAS,
upon consummation of the Merger, the Stockholder will Beneficially Own Shares; 

        WHEREAS,
the parties believe that it is in the best interests of the Company and the Stockholder to provide for certain rights and obligations of the parties with respect to various
corporate matters of the Company following the Merger; and 

        WHEREAS,
the Merger Agreement contemplates that this Agreement will be executed concurrently with the execution of the Merger Agreement, with its provisions to become effective upon
consummation of the Merger. 

        NOW,
THEREFORE, in consideration of the premises and the mutual covenants and agreements of the parties hereto contained herein, and other good and valuable consideration, the receipt
and sufficiency of which hereby are acknowledged, and subject to the satisfaction or waiver of the conditions hereof, the parties hereto agree as follows: 

 
 

  ARTICLE I.
  
    INTRODUCTORY MATTERS    
    

1.1.  Defined Terms.  

        In addition to the terms defined elsewhere herein, the following terms have the following meanings when used herein with initial capital letters: 

        "13D Group" means a "group" as such term is used in Section 13(d)(3) of the Exchange Act. 

        "AAA" has the meaning given to that term in Section 4.8 of this Agreement. 

        "Allos Stock" means all shares of Allos' capital stock authorized, issued or outstanding prior to the consummation of the Merger, of
whatever class or series, including all of the Common Stock, $.0001 par value per share, of Allos. 

        "Affiliate" has the meaning given to that term in Rule 405 promulgated under the Securities Act. 

        "Agreement" means this Agreement, as the same may be amended, supplemented or otherwise modified from time to time in accordance with the
terms hereof. 

        "Amendment Effectiveness Deadline Date" has the meaning given to that term in Section 2.3(a) of this Agreement. 

        "Beneficial Owner," "Beneficially Own," "Beneficial
Ownership" and words of similar import have the meanings ascribed to such terms in Rule 13d-3 under the Exchange Act. Securities "Beneficially Owned" by a
Person includes securities "Beneficially Owned" by all other Persons with whom such Person would constitute a 13D Group with respect to securities of the same issuer. 

        "Board" means the Board of Directors of the Company. 

1

 

        "Business Day" means a day other than a Saturday, Sunday, federal or Massachusetts or California state holiday, or other day on which
commercial banks in Massachusetts or California are authorized or required by law to close. 

        "Closing Date" has the meaning set forth in the Merger Agreement. 

        "Common Stock" means the Common Stock, par value $0.01 per share, of the Company. 

        "Control," "Controlled," "Controlling,"
and "Under Common Control With" have the meanings ascribed to such terms in Rule 12b-2 under the Exchange Act. 

        "Deferral Notice" has the meaning given to that term in Section 2.1(e)(ii) of this Agreement. 

        "Deferral Period" has the meaning given to that term in Section 2.1(e)(ii) of this Agreement. 

        "Effectiveness Deadline" means (i) if the Company is notified by the SEC that the Registration Statement will not be reviewed, the
Effectiveness Deadline as to such Registration Statement shall be the fifth (5th) Business Day following the date that such notice is received by the Company; and (ii) if the
Company is notified by the SEC that the Registration Statement will be reviewed and thereafter the Company is notified that the Registration Statement is no longer subject to further review and
comments, the Effectiveness Deadline as to such Registration Statement shall be the fifth (5th) Business Day following the date on which the Company is so notified so long as such date
shall not be after
seventy-five (75) days after the Filing Date; provided, further, that if (i) the Effectiveness Deadline falls on a Saturday,
Sunday or other day that the SEC is closed for business, the Effectiveness Deadline shall be extended to the next Business Day on which the SEC is open for business or (ii) the Effectiveness
Deadline falls on a date on which the Registration Statement is not eligible to be declared effective under applicable rules and regulations of the Commission, the Effectiveness Deadline shall be
extended to the first Business Day on which such Registration Statement is so eligible to be declared effective by the Commission; 

        "Exchange Act" means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, as the same
may be amended from time to time. 

        "Filing Date" means, with respect to the Registration Statement required pursuant to Section 2.1, the 10th calendar day
following the Closing Date. 

        "Free Writing Prospectus" means any "free writing prospectus" as defined in Rule 405 promulgated under the Securities Act. 

        "Governmental Body" means any: (a) nation, state, commonwealth, province, territory, county, municipality, district or other
jurisdiction of any nature; (b) federal, state, local, municipal, foreign or other government; (c) governmental or quasi-governmental authority of any nature (including any governmental
division, department, agency, commission, instrumentality, official, ministry, fund, foundation, center, organization, unit, body or entity and any court or other tribunal); or
(d) self-regulatory organization (including the NASDAQ Global Market and the NASDAQ Global Select Market). 

        "Holder" shall mean (i) the Stockholder and (ii) to the extent any Registrable Securities are transferred or assigned by
such Stockholder and such transferee or assignee is entitled to the registration rights provided under Article II, such transferee or assignee. 

        "Holders Counsel" has the meaning given to that term in the definition of "Registration Expenses". 

        "Indemnified Parties" has the meaning given to that term in Section 2.5 of this Agreement. 

        "Lien" means, with respect to any property or asset, any mortgage, pledge, security interest, lien (statutory or other), charge,
encumbrance or other similar restrictions or limitations of any kind or nature whatsoever on or with respect to such property or asset. 

2

 

        "Merger" has the meaning given to that term in the recitals of this Agreement. 

        "Merger Agreement" has the meaning given to that term in the recitals of this Agreement. 

        "NASDAQ Stock Market" has the meaning given to that term in Section 2.1(d) of this Agreement. 

        "Other Stockholders" has the meaning given to that term in Section 2.5(b) of this Agreement. 

        "Person" means any individual, corporation, limited liability company, partnership, trust, joint stock company, business trust,
unincorporated association, joint venture, governmental authority or other legal entity of any nature whatsoever. 

        "Register", "Registered" and
"Registration" shall mean a registration effected by preparing and filing a Registration Statement in compliance with the Securities Act (and any
post-effective amendments filed or required to be filed) and the declaration or ordering of effectiveness of such Registration Statement. 

        "Registrable Securities" means (i) the Shares issued to the Stockholder under the Merger Agreement, (ii) any other Shares
acquired by the Stockholder and (iii) any Shares issued (or issuable upon the conversion or exercise of any warrant, right, option or other convertible security which is issued as) as a
dividend, stock split or other distribution, recapitalization or reclassification with respect to, or in exchange for, or in replacement of, such Shares. Shares will cease to be Registrable Securities
when (A) a Registration Statement covering such Registrable Securities has been declared effective and such Registrable Securities have been disposed of pursuant to such effective Registration
Statement, (B) such Registrable Securities shall have been offered and sold pursuant to Rule 144 or Rule 145 (or any similar provisions then in effect) under the Securities Act,
(C) all Registrable Securities held by the Stockholder, any transferee, or any assignee (as the case may be) are eligible for transfer to the public pursuant to Rule 144 or
Rule 145 (or any similar provisions then in effect) under the Securities Act without any effective limitations on the volume of Registrable Securities to be sold under Rule 144 or
Rule 145 or are otherwise freely transferable to the public without restriction under the Securities Act, (D) such Registrable Securities are Transferred by a Person in a transaction in
which rights under the provisions of this Agreement are not assigned in accordance with this Agreement, or (E) such Registrable Securities cease to be outstanding. 

        "Registration Expenses" shall mean all expenses incurred by the Company in compliance with Section 2.1 hereof, including, without
limitation, all registration and filing fees, printing expenses (including, without limitation, printing certificates, if applicable, and prospectuses), messenger and delivery services and telephone
expenses, fees and disbursements of counsel for the Company, fees and expenses of one counsel retained by the Holders of a majority of the Registrable Shares to be included in the Registration
Statement (together with any separate local counsel reasonably retained by such law firm, "Holders Counsel");  provided such fees of Holders Counsel shall
not exceed fifty thousand dollars ($50,000) in the aggregate, all application and filing fees in connection
with listing on a national securities exchange or automated quotation system, all fees and expenses of compliance with federal securities and state "blue sky" or securities laws, all fees and
disbursements of independent certified public accountants of the Company (including, without limitation, the expense of any special audits incident to or required by such performance), and all fees
and expenses of all other Persons retained by the Company in connection with the consummation of the transactions contemplated by this Agreement, but excluding the compensation of regular employees of
the Company, which shall be paid in any event by the Company. 

        "Registration Statement" means a registration statement required to be filed hereunder, including pre- and
post-effective amendments, all exhibits thereto, and all material incorporated by reference or deemed to be incorporated by reference in the registration statement, together with any
registration statement to replace such registration statement upon expiration thereof, if any. 

3

 

        "Rule 415 Limitation" has the meaning given to that term in Section 2.1(a) of this Agreement. 

        "SEC" means the Securities and Exchange Commission. 

        "SEC Guidance" shall mean (i) any publicly available written or oral guidance, comments, requirements or requests of the SEC staff
and (ii) the Securities Act. 

        "Securities Act" means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder, as the same may be
amended from time to time. 

        "Shares" has the meaning given to that term in the recitals to this Agreement. 

        "Shelf Registration" has the meaning given to that term in Section 2.1(a) of this Agreement. 

        "Shelf Registration Period" has the meaning given to that term in Section 2.1(b) of this Agreement. 

        "Stockholder" has the meaning given to that term in the recitals to this Agreement. 

        "Subsidiary" shall mean, in respect of any specified Person, any corporation or other entity of which 50% or more of the outstanding share
capital or other equity interest is owned, directly or indirectly, by such specified Person. 

        "Transfer" means, with respect to any Share (or direct or indirect economic or other interest therein), a transfer, distribution, sale,
gift, assignment, pledge, hypothecation or other disposition, whether directly or indirectly (pursuant to the creation of a derivative security or otherwise), the grant of an option or other right or
the imposition of a restriction on disposition or voting or by operation of law. When used as a verb, "Transfer" shall have the correlative meaning. In addition, "Transferred" and "Transferee" shall
have the correlative meanings. 

        "Valid Business Reason" means a determination by the Board in good faith that (a) offers or sales under the Registration Statement
and any prospectus and/or supplement relating thereto would interfere with any material financing, acquisition, corporate reorganization or merger or other material transaction involving the Company
or (b) the Company is in possession of material non-public information disclosure of which would be detrimental to the business and affairs of the Company in any material respect
and that Registration Statement and any prospectus and/or supplement relating thereto would be materially misleading absent the inclusion of such information. 

 
 

  ARTICLE II.
  
    REGISTRATION RIGHTS    
    

2.1.  Shelf Registration.  

        (a)   On or prior to the Filing Date, the Company shall prepare and file with the SEC a "shelf" Registration Statement covering
the resale of all Registrable Securities. Such Registration Statement shall be on Form S-3 (except if the Company is not then eligible to register for resale the Registrable
Securities on Form S-3, in which case such registration shall be on another appropriate form in accordance herewith) relating to the offer and sale of the Registrable Securities by
the Holders thereof from time to time in accordance with the methods of distribution set forth in the Registration Statement (such "Plan of Distribution" attached hereto as  Annex A (as it may be
modified in response to SEC comments)) and Rule 415 under the Securities Act, together with any registration
statement to replace such registration statement upon expiration thereof, if any, (hereinafter the "Shelf Registration"). Subject to the terms of this
Agreement, the Company shall use its commercially reasonable efforts to cause the Registration Statement to be declared effective under the Securities Act as promptly as possible after the filing
thereof but in any event no later than the Effectiveness Deadline. The Company shall use commercially reasonable efforts to address any comments from the SEC regarding such Registration Statement and
to advocate with the SEC for the registration of all 

4

 

Registrable
Securities in accordance with SEC Guidance. Notwithstanding the foregoing, if the SEC prevents the Company from including any or all of the Registrable Securities on the Registration
Statement due to limitations on the use of Rule 415 of the Securities Act for the resale of the Registrable Securities by the Holders (a "Rule 415
Limitation") or otherwise, the Registration Statement shall register the resale of a number of Shares which is equal to the maximum number of shares as is permitted by the SEC,
and, subject to the provisions of this Section 2.1, the Company shall continue to use its commercially reasonable efforts to register all remaining Registrable Securities as set forth in this
Article II. In such event, the number of Shares to be registered for each Holder in the Registration Statement shall be reduced pro rata among all Holders. The Company shall continue to use its
commercially reasonable efforts to register all remaining Registrable Securities as promptly as practicable in accordance with the applicable rules, regulations and guidance of the SEC. 

        (b)   The Company shall use its commercially reasonable efforts to keep the Registration Statement continuously effective under
the Securities Act in order to permit the prospectus included therein to be lawfully delivered by the Holders of the Registrable Securities included therein until the later of (1) all
Registrable Securities covered by the Registration Statement having been sold and (2) such time as there are no Registrable Securities. However, in no event shall the Registration Statement be
kept effective for more than three years from the date such Registration Statement becomes effective. Such period during which the Registration Statement shall remain effective shall be referred to
herein as the "Shelf Registration Period". The Company shall be deemed not to have used its commercially reasonable efforts to keep the Registration
Statement effective during the Shelf Registration Period if it voluntarily takes any action that would directly result in Holders of Registrable Securities covered thereby not being able to offer and
sell such Registrable Securities during such period, unless such action is required by applicable law or except as provided in Section 2.1(e). 

        (c)   Notwithstanding any other provisions of this Agreement to the contrary, the Company shall cause (i) the
Registration Statement (as of the effective date of the Registration Statement), any amendment thereof (as of the effective date thereof) or supplement thereto (as of its date), (A) to comply
in all material respects with the applicable requirements of the Securities Act, the rules and regulations of the SEC and SEC Guidance and (B) not to contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary in order to make the statements therein not misleading, and (ii) any related prospectus, preliminary prospectus
or Free Writing Prospectus and any amendment thereof or supplement thereto, as of its date, (A) to comply in all material respects with the applicable
requirements of the Securities Act, the rules and regulations of the SEC and SEC Guidance and (B) not to contain any untrue statement of a material fact or omit to state a material fact
required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading;  provided, however, the Company shall have no such obligations or liabilities with respect to any written
information pertaining to any Holder and furnished in writing to the Company by or on behalf of such Holder specifically for inclusion therein. 

        (d)   The Company shall use its commercially reasonable efforts to cause the Registrable Securities included in the
Registration Statement to be, upon resale thereunder, listed on the NASDAQ Global Select Market ("NASDAQ Stock Market") or, if the Common Stock is not
then listed on the NASDAQ Stock Market, on the principal national securities exchange on which the Common Stock is then listed, or if the Common Stock is not then listed on a national securities
exchange, authorized for quotation on any automated quotation system on which the Common Stock is then quoted. 

        (e)   If (A) the SEC issues a stop order suspending the effectiveness of the Registration Statement or initiates
proceedings with respect to the Registration Statement under Section 8(d) or 8(e) of the Securities Act or (B) the Board, in its good faith judgment, determines that the registration of 

5

 

Registrable
Securities pursuant to this Section 2.1 should be delayed (with respect to the initial filing) or offers and/or sales of Registrable Securities suspended because of a Valid Business
Reason: 

          (i)  in the case of clause (A) above, subject to clause (ii) below, as promptly as practicable, the Company
shall prepare and file, if necessary pursuant to applicable law, a post-effective amendment to such Registration Statement or a supplement to the related prospectus or any document
incorporated therein by reference or file any other required document that would be incorporated by reference into such Registration Statement and related prospectus so that (1) such
Registration Statement does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements therein not
misleading and (2) such prospectus does not contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to make the statements
therein, in light of the circumstances under which they were made, not misleading, as thereafter delivered to the purchasers of the Registrable Securities being sold thereunder, and, in the case of a
post-effective amendment to the Registration Statement, subject to the next sentence, use commercially reasonable efforts to cause it to be declared effective as promptly as is
practicable; and 

         (ii)  the Company shall promptly notify the Holders in writing that the availability of the Registration Statement is
suspended (a "Deferral Notice") and, subject to Section 2.1(e)(iii) below, the expected duration of the suspension (such period during which the
availability of the Registration Statement and any related prospectus is suspended, a "Deferral Period"). Upon receipt of any Deferral Notice, the
Holders shall immediately suspend making any offers or sales pursuant to the Registration Statement until such Holder's receipt of copies of the supplemented or amended prospectus provided for in
clause (A) above, or until it is advised in writing by the Company that the prospectus may be used, and has received copies of any additional or supplemental filings that are incorporated or
deemed incorporated by reference in such prospectus. 

       (iii)  The Company will use its commercially reasonable efforts to ensure that the use of the prospectus with respect to such
Registration Statement may be resumed (x) in the case of clause (A) above, as promptly as is practicable and (y) in the case of clause (B) above, as soon as, in the
reasonable good faith judgment of the Company there is no Valid Business Reason to continue such suspension and postponement. The Company shall give written notice to the Holders of the termination of
the Deferral Period promptly (and in any event within five business days) thereafter. Notwithstanding anything to the contrary contained herein, in no event shall (A) a single suspension
arising from a Valid Business Reason exceed thirty (30) consecutive days, (B) the aggregate duration of all such suspensions arising from a Valid Business Reason exceed sixty
(60) days in any twelve (12) month period or (C) a suspension arising from a single Valid Business Reason be invoked more than once in any twelve (12) month period. 

        2.2.    Expenses of Registration.    All Registration Expenses incurred in connection with the registration,
qualification or compliance pursuant to this Section 4 shall be borne by the Company, whether or not any Registrable Securities are sold pursuant to a Registration Statement. The Company will
bear its internal expenses (including, without limitation, all salaries and expenses of its officers and employees performing legal or accounting duties), the expenses of any annual audit and
"comfort" letters and the fees and expenses of any person, including special experts, retained by the Company. 

        2.3.    Registration Procedures.    In the case of each registration effected by the Company pursuant to this
Article II, the following provisions shall apply: 

        (a)   At the time the SEC declares such Registration Statement effective, each Holder shall be named as a selling security
holder in such Registration Statement and the related prospectus in such a manner as to permit such Holder to deliver such prospectus to purchasers of Registrable Securities included in the
Registration Statement in accordance with applicable law, subject to the terms and 

6

 

conditions
hereof. From and after the date a Registration Statement is declared effective, the Company shall, as promptly as practicable and in any event no later than (x) the fifth
(5th) Business Day after such
date or (y) the fifth (5th) Business Day after the expiration of any Deferral Period that is either in effect or put into effect within five (5) Business Days of such date: 

          (i)  if required by applicable law, prepare and file with the SEC a post-effective amendment to the Registration
Statement or prepare and, if required by applicable law, file a supplement to the related prospectus or a supplement or amendment to any document incorporated therein by reference or file with
the SEC any other required document so that the Holder is named as a selling security holder in the Registration Statement and the related prospectus in such a manner as to permit such Holder to
deliver such prospectus to purchasers of such Holder's Registrable Securities included in the Registration Statement in accordance with applicable law and, if the Company shall file a
post-effective amendment to the Registration Statement, use its commercially reasonable efforts to cause such post-effective amendment to be declared effective under the
Securities Act as promptly as is practicable, but in any event by the date (the "Amendment Effectiveness Deadline Date") that is sixty (60) days
after the date such post-effective amendment is required by this clause to be filed; 

         (ii)  provide such Holder copies of any documents filed pursuant to Section 2.3(a)(i); and 

       (iii)  notify such Holder as promptly as practicable after the effectiveness under the Securities Act of any
post-effective amendment filed pursuant to Section 2.3(a)(i); 

provided, that if the request by such Holder is delivered during a Deferral Period, the Company shall so inform the Holder making such request and shall
take the actions set forth in clauses (i), (ii) and (iii) above upon expiration of the Deferral Period in accordance with this Section 2.3(a) and Section 2.1(e) of
this Agreement. 

        (b)   The Company shall notify the Holders of the Registrable Securities included within the coverage of the Registration
Statement (which notice may, at the discretion of the Company (or as required pursuant to Section 2.1(e) state that it constitutes a Deferral Notice, in which event the provisions of
Section 2.1(e) shall apply): 

          (i)  when the Registration Statement or any amendment thereto has been filed with the SEC and when the Registration Statement
or any post-effective amendment thereto has become effective; 

         (ii)  of any request by the SEC for amendments or supplements to the Registration Statement or the prospectus included therein
or for additional information; 

       (iii)  of the issuance by the SEC of any stop order suspending the effectiveness of the Registration Statement or the
initiation of any proceedings for that purpose and of any other action, event or failure to act that would cause the Registration Statement not to remain effective; 

        (iv)  of the receipt by the Company of any notification with respect to the suspension of the qualification or exemption from
qualification of any Registrable Securities for sale in any jurisdiction or the initiation of any proceeding for such purpose; and 

         (v)  of the occurrence of any Valid Business Reason. 

        (c)   The Company shall use its commercially reasonable efforts to obtain the withdrawal at the earliest possible time of any
stop order suspending the effectiveness of the Registration Statement and the elimination of any other impediment to the continued effectiveness of the Registration Statement. 

        (d)   The Company shall promptly furnish to each Holder of Registrable Securities included within the coverage of the Shelf
Registration, without charge, if the Holder so requests in writing, at least one conformed copy of the Registration Statement and any post-effective amendment thereto, including financial
statements and schedules and all exhibits thereto (excluding those, if any, incorporated by reference). 

7

 

        (e)   The Company shall promptly furnish to each Holder of Registrable Securities included within the coverage of the Shelf
Registration, without charge, such number of prospectuses and other documents incident thereto, including but not limited to any amendment thereof or supplement thereto and any Free Writing Prospectus
used in connection therewith, as each of the Holders, as applicable, from time to time may reasonably request. The Company consents, subject to the provisions of this Agreement and except during such
periods that a Deferral Notice is outstanding and has not been revoked, to the use of the prospectus and each amendment or supplement thereto and any Free Writing Prospectus used in connection
therewith by each of the selling Holders in connection with the offering and sale of the Registrable Securities covered by the prospectus, or any amendment or supplement thereto, included in the
Registration Statement. 

        (f)    The Company shall use commercially reasonable efforts to register or qualify, or cooperate with the Holders of the
Registrable Securities included in the Registration Statement and their respective counsel in connection with the registration or qualification of, the resale of the Registrable Securities under the
securities or "blue sky" laws of such states of the United States as any Holder requests in writing and to do any and all other acts or things necessary or advisable to enable the offer and sale in
such jurisdictions of the Registrable Securities covered by the Registration Statement; provided,  however, that the Company shall not be required to
(i) qualify generally to do business in any jurisdiction where it is not then so qualified or
(ii) take any action that would subject it to general service of process or to taxation in any jurisdiction to which it is not then so subject. 

        (g)   Unless any Registrable Securities shall be in book-entry form only, if requested by the Holders, the Company
shall cooperate with the Holders of the Registrable Securities to facilitate the timely preparation and delivery of certificates representing the Registrable Securities to be delivered to a transferee
pursuant to the Registration Statement, which certificates shall be free of any restrictive legends and in such denominations and registered in such names as the Holders may request. 

        (h)   The Company will comply with all rules and regulations of the SEC to the extent and so long as they are applicable to the
Shelf Registration and will make generally available to its security holders (or otherwise provide in accordance with Section 11(a) of the Securities Act) an earnings statement satisfying the
provisions of Section 11(a) of the Securities Act and Rule 158 thereunder, no later than 45 days after the end of a 12-month period (or 90 days, if such period
is a fiscal year) beginning with the first month of the Company's first fiscal quarter commencing after the effective date of the Registration Statement, which statement shall cover such
12-month period. 

        (i)    If requested in writing in connection with a disposition of Registrable Securities pursuant to a Registration Statement,
the Company shall make reasonably available for inspection during normal business hours by a representative for the holders of a majority of the number of such Registrable Securities, any
broker-dealers, attorneys and accountants retained by such holders, and any attorneys or other agents retained by a broker-dealer engaged by such holders, all relevant financial and other records and
pertinent corporate documents and properties of the Company and its subsidiaries, and cause the appropriate officers, directors and employees of the Company and its subsidiaries to make reasonably
available for inspection during normal business hours on reasonable notice all relevant information reasonably requested by such representative for the Holders, or any such broker-dealers, attorneys
or accountants in connection with such disposition, in each case as is customary for similar "due diligence" examinations; provided, that such persons
shall first agree in writing with the Company that any information that is reasonably and in good faith designated by the Company in writing as confidential at the time of delivery of such information
shall be kept confidential by such persons and shall be used solely for the purposes of exercising rights under this Agreement, unless (i) disclosure of such information is required by court or
administrative order or is necessary to respond to inquiries of regulatory authorities, (ii) disclosure of such information is required by law (including any disclosure requirements pursuant to
federal securities laws in connection with the filing of the Registration Statement or the use of any prospectus or Free Writing Prospectus referred to in this Agreement) or 

8

 

(iii) such
information becomes generally available to the public other than as a result of a disclosure or failure to safeguard by any such person, and provided further that the foregoing
inspection and information gathering shall, to the greatest extent possible, be coordinated on behalf of all the Holders and the other parties entitled thereto by Holders Counsel. 

        (j)    The Company shall (i) permit Holders Counsel to review and comment upon (A) a Registration Statement at
least five (5) Business Days prior to its filing with the SEC and (B) all Free Writing Prospectuses and all amendments and supplements to all Registration Statements within a reasonable
number of days prior to their filing with the Commission, and (ii) not file any Registration Statement or amendment thereof or supplement thereto or any Free Writing Prospectus in a form to
which the Holders holding a majority of the Registrable Securities reasonably objects. The Company shall furnish to Holders Counsel, without charge, (x) copies of any correspondence from the
SEC or the staff of the SEC to the Company or its representatives relating to any Registration Statement, (y) promptly after the same is prepared and filed with the Commission, one copy of any
Registration Statement and any amendment(s) thereto, including financial statements and schedules, if requested by a Holder, and all exhibits; and (z) promptly upon the effectiveness of any
Registration Statement, one copy of the prospectus included in such Registration Statement and all amendments and supplements thereto. The Company shall reasonably cooperate with such Holders Counsel
in performing the Company's obligations pursuant to this Section 2. For the avoidance of doubt, in no event shall the Company have any obligation to permit the Holders or any counsel to Holders
to review and/or comment on any of the Company's filings under the Exchange Act, including without limitation Forms 10-K, 10-Q and 8-K. 

        (k)   If reasonably requested by a Holder, the Company shall as soon as practicable (i) incorporate in a prospectus
supplement or post-effective amendment such information as such Holder reasonably requests to be included therein relating to the sale and distribution of Registrable Securities,
including, without limitation, information with respect to the number of Registrable Securities being offered or sold, the purchase price being paid therefor and any other terms of the offering of the
Registrable Securities to be sold in such offering; (ii) make all required filings of such prospectus supplement or post-effective amendment after being notified of the matters to
be incorporated in such prospectus supplement or post-effective amendment; and (iii) supplement or make amendments to any Registration Statement if reasonably requested by Holders
of a majority in interest of Registrable Securities participating in such registration. 

2.4.  Information by the Holders. 

        (a)   The Company may require any Holder holding securities included in any registration to furnish to the Company in writing
such information regarding such Holder and pertinent to the disclosure requirements relating to the registration and the distribution of the Registrable Securities as the Company may from time to time
reasonably request in writing. 

        (b)   In the event that, either immediately prior to or subsequent to the effectiveness of any registration statement, any
Holder shall distribute Registrable Securities to its partners, such Holder shall so advise the Company and the Company shall be authorized to file an amendment to such registration statement or
prospectus supplement to remove such partners, as selling security holders. 

2.5.  Indemnification.  

        (a)   The Company will indemnify each of the Holders, as applicable, each of its officers, directors, partners and Affiliates,
and each Person controlling each of the Holders, with respect to the registration which has been effected pursuant to this Section 4 against all claims, losses, damages and liabilities (or
actions in respect thereof) arising out of or based on any untrue statement (or alleged untrue statement) of a material fact contained in any prospectus, offering circular or other document 

9

 

(including
any related Registration Statement, notification or the like) incident to any such registration, qualification or compliance, or based on any omission (or alleged omission) to state therein
a material fact required to be stated therein or necessary to make the statements therein not misleading, or any violation by the Company of the Securities Act or the Exchange Act or any rule or
regulation thereunder applicable to the Company and relating to action or inaction required of the Company in connection with any such registration, qualification or compliance (collectively a
"Violation"), and will reimburse each of the Holders, each of its officers, directors and partners, and each Person controlling each of the Holders for
any legal and any other expenses reasonably incurred in connection with investigating and defending any such claim, loss, damage, liability or action; provided that the Company will not be liable in
any such case to the extent that any such claim, loss, damage, liability or expense arises out of or is based on any untrue statement or omission based upon written information furnished to the
Company by the Holders and stated to be specifically for use therein; provided, further, that the indemnity agreement contained in this Section 2.5(a) shall not apply to amounts paid in
settlement of any such loss, claim, damage, liability or action if such settlement is effected without the consent of the Company, which consent shall not be unreasonably withheld. Notwithstanding the
foregoing, in no event shall the Company be liable for any Violation relating to an offer or sale of Registrable Securities covered by the Registration Statement to the extent such offer or sale
occurred during a Deferral Period. 

        (b)   Each of the Holders will, if Registrable Securities held by it are included in the securities as to which such
registration, qualification or compliance is being effected, indemnify the Company, each of its directors and officers, Affiliates, and each person who controls the Company against all claims, losses,
damages and liabilities (or actions in respect thereof) arising out of or based on any untrue statement (or alleged untrue statement) of a material fact contained in any such Registration Statement,
prospectus, supplement, or other document made by such Holder, or any omission (or alleged omission) to state therein a material fact required to be stated therein or necessary to make the statements
by such Holder therein not misleading, and will reimburse the Company such directors, officers, partners, persons, or control persons for any legal or any other expenses reasonably incurred in
connection with investigating and defending any such claim, loss, damage, liability or action, in each case to the extent, but only to the extent, that such untrue statement (or alleged untrue
statement) or omission (or alleged omission) is made in such Registration Statement, prospectus, supplement or other document, or such violation is made, in reliance upon and in conformity with
written information furnished to the Company by such Holder and stated to be specifically for use therein or relates to the offers or sales of Registrable Securities during the Deferral Period;
provided, however, that the obligations of each of the Holders hereunder shall be limited to an amount equal to the proceeds to such Holder of securities sold as contemplated herein; provided further,
that the indemnity agreement contained in this Section 2.5(b) shall not apply to amounts paid in settlement of any such loss, claim, damage, liability or action if such settlement is effected
without the consent of the Holder, which consent shall not be unreasonably withheld. 

        (c)   Each party entitled to indemnification under this Section 2.5 (the "Indemnified
Party") shall give notice to the party required to provide indemnification (the "Indemnifying Party") promptly after such
Indemnified Party has actual knowledge of any claim as to which indemnity may be sought, and shall permit the Indemnifying Party to assume the defense of any such claim or any litigation resulting
therefrom; provided that counsel for the Indemnifying Party that shall conduct the defense of such claim or any litigation resulting therefrom, shall be approved by the Indemnified Party (whose
approval shall not unreasonably be withheld) and the Indemnified Party may participate in such defense at such party's expense (unless the Indemnified Party shall have reasonably concluded that there
may be a conflict of interest between the Indemnifying Party and the Indemnified Party in such action, in which case the fees and expenses of counsel shall be at the expense of the Indemnifying
Party), and provided further that the failure of any Indemnified Party to give notice as provided herein shall not relieve the Indemnifying Party of its obligations under this Section 2.5
unless the Indemnifying Party is materially 

10

 

prejudiced
thereby. No Indemnifying Party, in the defense of any such claim or litigation shall, except with the consent of each Indemnified Party, consent to entry of any judgment or enter into any
settlement which (i) does not include as an unconditional term thereof the giving by the claimant or plaintiff to such Indemnified Party of a release from all liability in respect to such claim
or litigation or (ii) includes a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any Indemnified Party. Each Indemnified Party shall furnish such
information regarding itself or the claim in question as an Indemnifying Party may reasonably request in writing and as shall be reasonably required in connection with the defense of such claim and
litigation resulting therefrom. 

        (d)   If the indemnification provided for in this Section 2.5 is held by a court of competent jurisdiction to be
unavailable to an Indemnified Party with respect to any loss, liability, claim, damage or expense referred to herein, then the Indemnifying Party, in lieu of indemnifying such Indemnified Party
hereunder, shall contribute to the amount paid or payable by such Indemnified Party as a result of such loss, liability, claim, damage or expense in such proportion as is appropriate to reflect the
relative fault of the Indemnifying Party on the one hand and of the Indemnified Party on the other in connection with the statements or omissions which resulted in such loss, liability, claim, damage
or expense, as well as any other relevant equitable considerations. The relative fault of the Indemnifying Party and of the Indemnified Party 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 Indemnifying Party or by the
Indemnified Party and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission. 

        2.6.    Further Obligations of the Company.    With a view to making available the benefits of certain rules and
regulations of the Commission which may permit the sale of securities to the public without registration, the Company agrees to: 

        (a)   make and keep public information available as those terms are understood and defined in Rule 144 under the
Securities Act; 

        (b)   use commercially reasonable efforts to file with the SEC in a timely manner all reports and other documents required of
the Company under the Securities Act and the Exchange Act at any time after it has become subject to such reporting requirements; 

        (c)   except as provided in Section 2.1(b), as expeditiously as possible prepare and file with the SEC any amendments
and supplements to the Registration Statement and the prospectus included in the Registration Statement as may be necessary to comply with the provisions of the Securities Act (including the
anti-fraud provisions); and 

        (d)   so long as a Holder owns any Registrable Securities, furnish to such Holder upon request, a written statement by the
Company as to its compliance with the reporting requirements of Rule 144 and of the Securities Act and the Exchange Act, a copy of the most recent annual or quarterly report of the Company, and
such other reports and documents so filed as such Holder may reasonably request in availing itself of any rule or regulation of the SEC allowing such Holder to sell any such securities without
registration. 

 
 

  ARTICLE III.
  
    REPRESENTATIONS AND WARRANTIES    
    

3.1.  Representations and Warranties of the Stockholder. 

        The
Stockholder hereby represents and warrants to the Company as follows: 

        (a)   such Stockholder has the legal capacity to execute and deliver this Agreement and to consummate the transactions
contemplated hereby; 

11

 

        (b)   such Stockholder is an entity duly organized and validly existing under the laws of the jurisdiction in which it is
incorporated or constituted, and such Stockholder has all requisite power and authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby, and has taken all
necessary corporate or other action to authorize the execution, delivery and performance of this Agreement; 

        (c)   this Agreement has been validly executed and delivered by such Stockholder and constitutes the legal, valid and binding
obligation of such Stockholder, enforceable against such Stockholder in accordance with its terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium and
other laws of general application affecting enforcement of creditors' rights generally, and (ii) the availability of the remedy of specific performance or injunctive or other forms of equitable
relief may be subject to equitable defenses and would be subject to the discretion of the court before which any proceeding therefor may be brought; 

        (d)   neither the execution and delivery of this Agreement nor the consummation of the transactions contemplated hereby will
result in a violation of, or a default under, or conflict with, any contract, trust, commitment, agreement, understanding, arrangement or restriction of any kind to which such Stockholder is a party
or by which such Stockholder's assets are bound, other than as would not reasonably be expected to prevent or materially delay or impair the ability of such Stockholder to perform its obligations
hereunder. The consummation of the transactions contemplated hereby will not violate, or require any consent, approval, or notice under, any provision of any judgment, order, decree, statute, law,
rule or regulation applicable to such Stockholder, other than as would not reasonably be expected to prevent or materially delay or impair the ability of such Stockholder to perform its obligations
hereunder; 

        (e)   such Stockholder is the beneficial owner of shares of Allos Stock in the amount set forth opposite such Stockholder's
name in Schedule I attached hereto by Allos, free and clear of any and all Liens and any other limitation or restriction (including any restriction on the right to vote, sell or otherwise
dispose of such shares) (except as provided under the Voting Agreement or pursuant to any applicable restrictions on transfer under the Securities Act of 1933, as amended). Other than the Allos Stock
listed on such schedule, such Stockholder owns no securities of either Allos or the Company or other rights to subscribe for or otherwise acquire any securities of either Allos or the Company and has
no other interest in or voting rights with respect to any securities of either Allos or the Company; and 

        (f)    no claim, action, suit, proceeding, arbitration, investigation or inquiry before any Governmental Body is now pending or,
to the knowledge of such Stockholder, threatened, against or relating to such Stockholder which would prohibit or adversely affect the ability of such Stockholder to consummate or perform the
transactions contemplated by this Agreement or the Merger Agreement. 

3.2.  Representations and Warranties of Company.  

        The Company hereby represents and warrants to the Stockholder as follows: 

        (a)   the Company is a corporation duly organized and validly existing under the laws of the state of Delaware and has all
requisite corporate power and authority to execute and deliver this Agreement and to consummate the transactions contemplated hereby, and has taken all necessary corporate action to authorize the
execution, delivery and performance of this Agreement; 

        (b)   this Agreement has been duly authorized, executed and delivered by the Company, and constitutes the legal, valid and
binding obligation of the Company, enforceable against the Company in accordance with its terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium and other
laws of general application affecting enforcement of creditors' rights generally and (ii) the availability of the remedy of specific performance or injunctive or other forms of equitable 

12

 

relief
may be subject to equitable defenses and would be subject to the discretion of the court before which any proceeding therefor may be brought; and 

        (c)   neither the execution and delivery of this Agreement nor the consummation of the transactions contemplated hereby will
result in a violation of, or a default under, or conflict with, any contract, trust, commitment, agreement, understanding, arrangement or restriction of any kind to which the Company is a party or by
which the Company's assets are bound. The consummation of the transactions contemplated hereby will not violate, or require any consent, approval, or notice under, any provision of any judgment,
order, decree, statute, law, rule or regulation applicable to the Company. 

 
 

  ARTICLE IV.
  
    MISCELLANEOUS    
    

4.1.  Effective Date. 

        This
Agreement shall become effective upon consummation of the Merger as contemplated by the Merger Agreement and prior to such time shall have no force or effect. If the Merger
Agreement is terminated prior to the Closing Date, this Agreement shall terminate without any further action of the parties hereto and no party shall have any liability to the other with the respect
to the provisions contained herein. 

4.2.  Notices.  

        All notices, consents, requests, claims, demands and other communications hereunder shall be in writing and shall be given or made (and shall be deemed to have
been duly given or made upon receipt) by delivery in person, courier service, fax or registered or certified mail (postage prepaid, return receipt requested) as follows (or at such other address for a
party as shall be specified in a notice given in accordance with this Section 4.2): 

        (a)   if to the Company: 

AMAG
Pharmaceuticals, Inc.

100 Hayden Avenue

Lexington, Massachusetts 02421

Attention: Chief Executive Officer

Fax: (617) 812-7898 

with
a copy to: 

Cooley LLP

500 Boylston Street

Boston, MA 02136

Attention: Miguel J. Vega and Barbara Borden

Fax: (617) 937-2400 

        (b)   if to Stockholder: 

Warburg
Pincus Private Equity VIII, L.P.

450 Lexington Avenue

New York, NY 10017

Attention: Jonathan S. Leff

Fax: (212) 878-0850 

13

 

with
a copy to: 

Willkie
Farr & Gallagher LLP

787 Seventh Avenue

New York, NY 10019

Attention: Steven J. Gartner and Mark A. Cognetti

Fax: (212) 728-8111 

4.3.  Further Assurances.  

        The parties hereto will sign such further documents, cause such meetings to be held, resolutions passed, exercise their votes and do and perform and cause to be
done such further acts and things as may be necessary in order to give full effect to this Agreement and every provision hereof. 

4.4.  Assignment.  

        This Agreement will inure to the benefit of and be binding on the parties hereto and their respective successors and permitted assigns. Except as specifically
provided herein, this Agreement may not be assigned by any party hereto without the express prior written consent of the other parties, and any attempted assignment, without such consents, will be
null and void. For the avoidance of doubt, no transferee of shares of Common Stock subject to this Agreement shall be entitled to any rights under Article II without the consent of the Company,
which may be granted or withheld in its sole discretion. 

4.5.  Amendment; Waiver.  

        This Agreement may be amended, supplemented or otherwise modified only by a written instrument executed by the parties hereto. No waiver by any party of any of
the provisions hereof will be effective unless explicitly set forth in writing and executed by the party so waiving. Except as provided in the preceding sentence, no action taken pursuant to this
Agreement, including without limitation, any investigation by or on behalf of any party, will be deemed to constitute a waiver by the party taking such action of compliance with any covenants or
agreements contained herein. The waiver by any party hereto of a breach of any provision of this Agreement will not operate or be construed as a waiver of any subsequent breach. 

4.6.  Third Parties.  

        Except as otherwise set forth herein, this Agreement does not create any rights, claims or benefits inuring to any Person that is not a party hereto nor create or
establish any third party beneficiary hereto. 

4.7.  Governing Law.  

        This Agreement will be governed by, and construed in accordance with, the laws of the State of Delaware. 

4.8.  Binding Arbitration.  

        Any controversy, dispute or claim arising out of, in connection with, or in relation to, the construction, performance, or breach of this Agreement shall be
adjudicated by arbitration conducted in accordance with the existing rules for commercial arbitration of the American Arbitration Association, or any successor organization in New York City (the
"AAA"), as determined by the party initiating the arbitration. The demand for arbitration shall be delivered in accordance with the notice provisions of
this Agreement. Arbitration hereunder shall be conducted by a single arbitrator selected jointly by the parties hereto. If within thirty (30) days after a demand for arbitration is made, the 

14

 

parties
hereto are unable to agree on a single arbitrator, three arbitrators shall be appointed. Each party shall select one arbitrator and those two arbitrators shall then select within thirty
(30) days a third neutral arbitrator. If the arbitrators selected by the parties cannot agree on the third arbitrator, they shall discuss the qualifications of such third arbitrator with the
AAA prior to selection of such arbitrator, which selection shall be in accordance with the existing rules of the AAA. If an arbitrator
cannot continue to serve, a successor to an arbitrator selected by the parties shall be also selected by the same party, and a successor to a neutral arbitrator shall be selected as specified above. A
full rehearing will be held only if the neutral arbitrator is unable to continue to serve or if the remaining arbitrators unanimously agree that such a rehearing is appropriate. Any discovery in
connection with arbitration hereunder shall be limited to information directly relevant to the controversy or claim in arbitration. Judgment upon any arbitration award rendered may be entered in any
court of competent jurisdiction. EACH PARTY HERETO UNCONDITIONALLY WAIVES TRIAL BY JURY IN ANY SUIT, ACTION OR PROCEEDING RELATING TO THIS AGREEMENT. 

4.9.  Specific Performance.  

        Without limiting or waiving in any respect any rights or remedies of the parties hereto under this Agreement now or hereinafter existing at law or in equity or by
statute, each of the parties hereto will be entitled to seek specific performance of the obligations to be performed by the other in accordance with the provisions of this Agreement, including during
such time prior to the final and binding decision in any arbitration contemplated by Section 4.8. 

4.10.  Termination of other Agreements.  

        Effective as of the Closing Date, all agreements between the Stockholder and Allos entered into before the date of this Agreement, including without limitation,
the letter agreement, by and between Allos and Stockholder, dated March 4, 2005, the Securities Purchase Agreement by and between Allos and Stockholder, dated March 2, 2005, and the
Registration Rights Agreement, by and between Allos and Stockholder, dated March 2, 2005 shall hereby be permanently waived and/or terminated, and have no further force and effect. 

4.11.  Entire Agreement.  

        This Agreement sets forth the entire understanding of the parties hereto with respect to the subject matter hereof. 

4.12.  Titles and Headings.  

        The section headings contained in this Agreement are for reference purposes only and will not affect the meaning or interpretation of this Agreement. 

4.13.  Severability.  

        If any provision of this Agreement is declared by any court of competent jurisdiction to be illegal, void or unenforceable, all other provisions of this Agreement
will not be affected and will remain in full force and effect. 

4.14.  Construction  

        The language used in this Agreement 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. Unless the context otherwise requires: (a) "or" is disjunctive but not exclusive, (b) words in the singular include the plural, and in the plural
include the singular, and (c) the words "hereof", "herein" and "hereunder" and words of similar import when used in this Agreement refer to this Agreement as a 

15

 

whole
and not to any particular provision of this Agreement, and Section and Exhibit references are to this Agreement unless otherwise specified. 

4.15.  Counterparts.  

        This Agreement may be executed in any number of counterparts, each of which will be deemed to be an original and all of which together will be deemed to be one
and the same instrument. 

4.16.  Recapitalizations, Exchanges, Etc.  

        The provisions of this Agreement shall apply to the full extent set forth herein with respect to (i) the Registrable Securities, and (ii) any and
all shares of voting Common Stock into which the Registrable Securities are converted, exchanged or substituted in any recapitalization or other capital reorganization
by the Company, and shall be appropriately adjusted for any stock dividends, splits, reverse splits, combinations, recapitalizations and the like occurring after the date hereof. 

        [Signature page immediately follows.]

16

 

  
        IN WITNESS WHEREOF, each of the undersigned has executed this Agreement or caused this Agreement to be executed on its behalf as of the date first written above. 

 

 

					
	 	 	AMAG PHARMACEUTICALS, INC.
	

 	
 	
  By:	
 	
/s/ BRIAN J.G. PEREIRA

  Name: Brian J.G. Pereira, MD

Title: Chief Executive Officer

 

 

 

					
	 	 	WARBURG PINCUS PRIVATE EQUITY VIII, L.P.
	

 	
 	
  By:	
 	
Warburg Pincus Partners LLC, its general partner
	

 	
 	
  By:	
 	
Warburg Pincus & Co., its managing member
	

 	
 	
  By:	
 	
/s/ JONATHAN LEFF

  Name: Jonathan Leff

Title: Partner

 

 17

 
 

SCHEDULE 1
  
    OWNERSHIP OF SECURITIES    
    

 

 

											
	Name and Address of Stockholder

 
	 	Shares Held

of Record 	 	Options and

Other Rights 	 	Additional Securities

Beneficially Owned 	 
	 Warburg Pincus Private Equity VIII, L.P.

450 Lexington Ave.

34th Floor

New York, NY 10017
	 	 	—	 	 	—	 	 	26,124,430	 
	 	 	 	 	 	 	 	 

 

 

 
 

  ANNEX A
  
    PLAN OF DISTRIBUTION    
    

        We are registering a total of [                        ] shares of
our common stock on behalf of the selling stockholder
pursuant to the terms of a stockholders agreement, dated as of July 19, 2011. A copy of the stockholders agreement was filed with the SEC and is incorporated by reference as an exhibit to the
registration statement of which this prospectus is a part. The selling stockholder may, from time to time after the date of this prospectus, sell any or all of the shares of common stock offered
hereby on any stock exchange, market or trading facility on which the shares are traded or in private transactions. We will not receive any of the proceeds from the sale by the selling stockholder of
the shares of common stock. We will bear all fees and expenses incident to our obligation to register the shares of common stock other than any fees of counsel to the selling stockholder which exceed
$50,000. 

        The
selling stockholder may decide not to sell any shares of common stock. The selling stockholder may sell all or a portion of the shares of common stock beneficially owned by it and
offered hereby from time to time directly or through one or more underwriters, broker-dealers or agents, who may receive compensation in the form of discounts, concessions or commissions from the
selling stockholder and/or the purchasers of the shares of common stock for whom they may act as agent. In effecting sales, broker-dealers that are engaged by the selling stockholder may arrange for
other broker-dealers to participate. The selling stockholder may be deemed an "underwriter" within the meaning of the Securities Act. Any brokers, dealers or agents who participate in the distribution
of the shares of common stock by the selling stockholder may also be deemed to be "underwriters," and any profits on the sale of the shares of common stock by them and any discounts, commissions or
concessions received by any such brokers, dealers or agents may be deemed to be underwriting discounts and commissions under the Securities Act. To our knowledge, the selling stockholder has not
entered into any agreement, arrangement or understanding with any particular broker-dealer or market maker with respect to the shares of common stock offered hereby, nor do we know the identity of the
broker-dealers or market makers that may participate in the resale of the shares. Because the selling stockholder and any other selling stockholder, broker, dealer or agent may be deemed to be an
"underwriter" within the meaning of the Securities Act, the selling stockholder and any other selling stockholder, broker, dealer or agent may be subject to the prospectus delivery requirements of the
Securities Act and may be subject to certain statutory liabilities of the Securities Act (including, without limitation, Sections 11, 12 and 17 thereof) and Rule 10b-5 under
the Exchange Act. 

        The
selling stockholder will act independently of us in making decisions with respect to the timing, manner and size of each sale. The shares of common stock may be sold in one or more
transactions at fixed prices, at prevailing market prices at the time of the sale, at varying prices determined at the time of sale, or at negotiated prices. These sales may be effected in
transactions, which may involve crosses or block transactions, pursuant to one or more of the following methods: 

	•
	on any national securities exchange or quotation service on which the securities may be listed or quoted at the time of
sale;   

	•
	in the over-the-counter market in accordance with the rules of the NASDAQ;  

	•
	in transactions otherwise than on these exchanges or systems or in the over-the-counter market;  

	•
	through the writing or settlement of options, whether such options are listed on an options exchange or otherwise;  

	•
	ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers;  

	•
	block trades in which the broker-dealer will attempt to sell the shares as agent but may position and resell a portion of
the block as principal to facilitate the transaction;   

	•
	purchases by a broker-dealer as principal and resale by the broker-dealer for its account;   

	•
	an exchange distribution in accordance with the rules of the applicable exchange; 

 

	•
	privately negotiated transactions;   

	•
	broker-dealers may agree with the selling stockholder to sell a specified number of such shares at a stipulated price per
share;   

	•
	by pledge to secure debts and other obligations or on foreclosure of a pledge;   

	•
	through the settlement of short sales;   

	•
	a combination of any such methods of sale; and   

	•
	any other method permitted pursuant to applicable law. 

        The
selling stockholder may also sell shares of common stock covered by this prospectus pursuant to Rule 144 promulgated under the Securities Act, if available, rather than under
this prospectus. In addition, the selling stockholder may transfer the shares of common stock by other means not described in this prospectus. 

        Any
broker-dealer participating in such transactions as agent may receive commissions from the selling stockholder (and, if they act as agent for the purchaser of such shares, from such
purchaser). The selling stockholder has informed us that any such broker-dealer would receive commissions from the selling stockholder which would not exceed customary brokerage commissions.
Broker-dealers may agree with the selling stockholder to sell a specified number of shares at a stipulated price per share, and, to the extent such a broker-dealer is unable to do so acting as agent
for the selling stockholder, to purchase as principal any unsold shares at the price required to fulfill the broker-dealer commitment to the selling stockholder. Broker-dealers who acquire shares as
principal may thereafter resell such shares from time to time in one or more transactions (which may involve crosses and block transactions and which may involve sales to and through other
broker-dealers, including transactions of the nature described above and pursuant to one or more of the methods described above) at fixed prices, at prevailing market prices at the time of the sale,
at varying prices determined at the time of sale, or at negotiated prices, and in connection with such resales may pay to or receive from the purchasers of such shares commissions computed as
described above. To the extent required under the Securities Act, an amendment to this prospectus or a supplemental prospectus will be filed, disclosing: 

	•
	the name of any such broker-dealers;   

	•
	the number of shares involved;   

	•
	the price at which such shares are to be sold;   

	•
	the commission paid or discounts or concessions allowed to such broker-dealers, where applicable;  

	•
	that such broker-dealers did not conduct any investigation to verify the information set out or incorporated by reference
in this prospectus, as supplemented; and   

	•
	other facts material to the transaction. 

        The
selling stockholder has informed us that it does not have any written or oral agreement or understanding, directly or indirectly, with any person to distribute the common stock. 

        Under
the securities laws of some states, the shares of common stock may be sold in such states only through registered or licensed brokers or dealers. In addition, in some states the
shares of common stock may not be sold unless such shares have been registered or qualified for sale in such state or an exemption from registration or qualification is available and is complied with. 

        Underwriters
and purchasers that are deemed underwriters under the Securities Act may engage in transactions that stabilize, maintain or otherwise affect the price of the common stock,
including the entry of stabilizing bids or syndicate covering transactions or the imposition of penalty bids. The selling 

2

 

stockholder
and any other person participating in the sale or distribution of the shares of common stock will be subject to applicable provisions of the Exchange Act and the rules and regulations
thereunder (including, without limitation, Regulation M of the Exchange Act), which may restrict certain activities of, and limit the timing of purchases and sales of any of the shares of
common stock by, the selling stockholder and any other participating person. To the extent applicable, Regulation M may also restrict the ability of any person engaged in the distribution of
the shares of common stock to engage in market-making and certain other activities with respect to the shares of common stock. In addition, the anti-manipulation rules under the Exchange
Act may apply to sales of the shares of common stock in the market. All of the foregoing may affect the marketability of the shares of common stock and the ability of any person or entity to engage in
market-making activities with respect to the shares of common stock. 

        Under
the stockholders agreement, we have agreed with the selling stockholder to keep the registration statement of which this prospectus constitutes a part effective until the earlier
of three years from the effective date of this registration statement or the date that all of the shares of common stock covered by the registration statement have been sold. 

        We
have agreed, among other things, to pay all expenses of the registration of the shares of common stock, estimated to be $
[                        ] in total, including,
without limitation, SEC filing fees and expenses of compliance with state securities or "Blue Sky" laws; provided, however, that the selling stockholder will pay all underwriting discounts and selling
commissions applicable to the sale of the shares of common stock and any expenses of the selling stockholder's counsel which exceed $50,000. We have agreed to indemnify the selling stockholder and
certain other persons against certain liabilities in connection with the offering of shares of common stock offered hereby, including liabilities arising under the Securities Act or, if such indemnity
is unavailable, to contribute amounts required to be paid in respect of such liabilities. The selling stockholder has, subject to certain limitations, agreed to indemnify us against liabilities under
the Securities Act that may arise from any written information furnished to us by the selling stockholder specifically for use in this prospectus or, if such indemnity is unavailable, to contribute
amounts required to be paid in respect of such liabilities. 

        At
any time a particular offer of the shares of common stock is made by the selling stockholder, a revised prospectus or prospectus supplement, if required, will be distributed. Such
prospectus supplement and related post-effective amendment, if required, will be filed with the SEC to reflect the disclosure of any required additional information with respect to the
distribution of the shares of common stock. We may suspend the sale of shares by the selling stockholder pursuant to this prospectus for certain periods of time for certain reasons, including if the
prospectus is required to be supplemented or amended to include additional material information. 

3

QuickLinks

Exhibit 10.3

Execution Copy

STOCKHOLDERS AGREEMENT July 19, 2011

STOCKHOLDERS AGREEMENT

ARTICLE I. INTRODUCTORY MATTERS

ARTICLE II. REGISTRATION RIGHTS

ARTICLE III. REPRESENTATIONS AND WARRANTIES

ARTICLE IV. MISCELLANEOUS

SCHEDULE 1 OWNERSHIP OF SECURITIES

ANNEX A PLAN OF DISTRIBUTION

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00192-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00192-of-00352.parquet"}]]