PHARMATHENE,
INC. VOTING AND LOCK-UP AGREEMENT


 


This PHARMATHENE, INC.
VOTING AND LOCK-UP AGREEMENT (this “Agreement”), dated as of July 31, 2013, is by and between, Theraclone Sciences,
Inc., a Delaware corporation (the “Company”), and each of the undersigned stockholders (each, a “Stockholder,”
and, collectively, the “Stockholders”) of PharmAthene, Inc., a Delaware corporation (“PharmAthene”),
identified on the signature page hereto.


 


A.The Company,
PharmAthene and Taurus Merger Sub, Inc., a Delaware corporation and direct, wholly owned subsidiary of PharmAthene (“Merger
Sub”) and Steven Gillis, Ph.D., solely in its capacity as the representative of the Theraclone Sciences, Inc. Stockholders,
are entering into an Agreement and Plan of Merger (as amended from time to time, the “Merger Agreement”), dated
as of the date hereof, pursuant to which Merger Sub will merge with and into the Company (the “Merger”), after
which time the Company will be a direct, wholly owned subsidiary of PharmAthene;


 


B.As of the date
hereof, each Stockholder is the Beneficial Owner (as defined below) of, and has the sole right to vote and dispose of, that number
of each class of the issued and outstanding capital stock of PharmAthene (the “PharmAthene Shares”) set forth
opposite such Stockholder’s name on Schedule A hereto; and


 


C.Concurrently
with the entry by the Company, PharmAthene and Merger Sub into the Merger Agreement, and as a condition and inducement to the willingness
of the Company to enter into the Merger Agreement and incur the obligations set forth therein, the Company has required that the
Stockholders enter into this Agreement.


 


Accordingly, and in
consideration of the foregoing and the mutual representations, warranties, covenants and agreements contained herein, the parties
hereto, intending to be legally bound, hereby agree as follows:


 


ARTICLE I.

Definitions


 


Capitalized terms used
but not defined in this Agreement are used in this Agreement with the meanings given to such terms in the Merger Agreement. In
addition, for purposes of this Agreement:


 


“Affiliate”
means, with respect to any specified person, a person who, at the time of determination, directly or indirectly through one or
more intermediaries, controls, or is controlled by, or is under common control with, such specified person. For purposes of this
Agreement, with respect to a Stockholder, “Affiliate” does not include PharmAthene and the persons that directly,
or indirectly through one or more intermediaries, are controlled by PharmAthene. For the avoidance of doubt, no officer or director
of PharmAthene will be deemed an Affiliate of another officer or director of PharmAthene by virtue of his or her status as an officer
or director of PharmAthene.


 


“Beneficially
Owned” or “Beneficial Ownership” with respect to any securities means having beneficial ownership
of such securities (as determined pursuant to Rule 13d-3 under the Exchange Act, disregarding the phrase “within 60
days” in paragraph (d)(1)(i) thereof), including pursuant to any agreement, arrangement or understanding, whether or
not in writing. Without duplicative counting of the same securities, securities Beneficially Owned by a person include securities
Beneficially Owned by (i) all Affiliates of such person, and (ii) all other persons with whom such person would constitute
a “group” within the meaning of Section 13(d) of the Exchange Act and the rules promulgated thereunder.


 








 


 



    	 



    	 



    




 


“Beneficial
Owner” with respect to any securities means a person that has Beneficial Ownership of such securities.


 


“person”
has the meaning ascribed thereto in the Merger Agreement.


 


“Subject Shares”
means, with respect to a Stockholder, without duplication, (i) the PharmAthene Shares owned by such Stockholder on the date
hereof as described on Schedule A, (ii) any additional shares of PharmAthene acquired by such Stockholder, over which
such Stockholder acquires Beneficial Ownership from and after the date hereof, whether pursuant to existing stock option agreements,
warrants or otherwise, and (iii) any shares into which the PharmAthene Shares may be converted, exchanges or reclassified. Without
limiting the other provisions of this Agreement, in the event that PharmAthene changes the number of PharmAthene Shares issued
and outstanding prior to the Termination Date as a result of a reclassification, stock split (including a reverse stock split),
stock dividend or distribution, combination, recapitalization, subdivision, or other similar transaction, the number of Subject
Shares subject to this Agreement will be equitably adjusted to reflect such change.


 


“Transfer”
means, with respect to a security, the sale, transfer, pledge, hypothecation, encumbrance, assignment or disposition of such security
or the Beneficial Ownership thereof, and each option, agreement, arrangement or understanding, whether or not in writing, to effect
any of the foregoing. As a verb, “Transfer” has a correlative meaning.


 


ARTICLE II.

Covenants of Stockholders


 


2.1             
Irrevocable Proxy. Concurrently with the execution of this Agreement, each Stockholder agrees to deliver to the Company
a proxy in the form attached hereto as Exhibit A (the “Proxy”), which will be irrevocable to the extent
provided in Section 212 of the Delaware General Corporation Law (the “DGCL”), with respect to the Subject
Shares referred to therein.


 


2.2             
Agreement to Vote.


 


(a)               
Except in the case of a Pieces Recommendation Withdrawal or a Transaction Event Withdrawal,
in which event each Stockholder may vote as he, she or it determines in his, her or its discretion, each and every meeting of the
stockholders of PharmAthene held prior to the Termination Date (as defined in Article VI), however called, and at every
adjournment or postponement thereof prior to the Termination Date, or in connection with each and every written consent of, or
any other action by, the stockholders of the Company given or solicited prior to the Termination Date, each Stockholder will vote,
or provide a consent with respect to, all of the Subject Shares entitled to vote or to consent thereon (i) in favor of the
adoption of the Merger Agreement, and any actions required in furtherance thereof, and (ii) against any amendment of PharmAthene’s
certificate of incorporation or bylaws or any other proposal or transaction involving PharmAthene, the effect of which amendment
or other proposal or transaction is to delay, impair, prevent or nullify the Merger or the transactions contemplated by the Merger
Agreement or change in any manner the voting rights of any capital stock of PharmAthene, and against any other action or agreement
that would result in a breach in any material respect of any covenant, representation or warranty or any other obligation or agreement
of PharmAthene or its shareholders under the Merger Agreement.


 


(b)              
No Stockholder will enter into any agreement with any person (other than the Company) prior
to the Termination Date (with respect to periods prior to or after the Termination Date) directly or indirectly to vote, grant
any proxy or give instructions with respect to the voting of, the Subject Shares in respect of the matters described in Section 2.2
hereof, or the effect of which would be inconsistent with or violate any provision contained in this Section 2.2. Any vote
or consent (or withholding of consent) by any Stockholder that is not in accordance with this Section 2.2 will be considered
null and void, and the provisions of the Proxy will be deemed to take immediate effect.


 






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2.3             
Revocation of Proxies; Cooperation. Each Stockholder agrees as follows:


 


(a)               
Such Stockholder hereby represents and warrants that any proxies heretofore given in respect
of the Subject Shares with respect to the matters described in Section 2.2(a) hereof are not irrevocable, and such
Stockholder hereby revokes any and all prior proxies with respect to such Subject Shares as they relate to such matters. Prior
to the Termination Date, such Stockholder will not directly or indirectly grant any proxies or powers of attorney with respect
to the matters set forth in Section 2.2(a) hereof (other than to the Company), deposit any of the Subject Shares or
enter into a voting agreement (other than this Agreement) with respect to any of the Subject Shares relating to any matter described
in Section 2.2(a).


 


(b)              
Such Stockholder will provide any information reasonably requested by the Company or PharmAthene
for any regulatory application or filing sought for such transactions.


 


2.4             
No Transfer of Subject Shares; Publicity. Each Stockholder agrees that:


 


(a)               
It (i) will not Transfer or agree to Transfer any of the Subject
Shares or, with respect to any matter described in Section 2.2(a), grant any proxy or power-of-attorney with respect
to any of the Subject Shares, (ii) will take all action reasonably necessary to prevent creditors in respect of any pledge
of the Subject Shares from exercising their rights under such pledge, and (iii) will not take any action that would make in a material
respect any of its representations or warranties contained herein untrue or incorrect or would have the effect of preventing or
disabling such Stockholder from performing any of its material obligations hereunder; provided,
however, that Stockholder may (x) transfer shares to Affiliates or charitable organizations, (y) if
Stockholder is an individual, transfer the Subject Shares 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 for estate planning purposes or for the purposes
of personal tax planning, and (z) transfer Subject Shares upon the death of Stockholder (any
such transferee permitted under clause (w), (x), (y) and (z), a “Permitted Transferee”);
provided, further, that any such Transfer shall be permitted only if, as a precondition to such Transfer, the Permitted
Transferee agrees in writing to be bound by all of the terms of this Agreement.


 


(b)              
Unless required by applicable Law or permitted by the Merger Agreement, such Stockholder will
not, and will not authorize or direct any of its Affiliates or Representatives to, make any press release or public announcement
with respect to this Agreement or the Merger Agreement or the transactions contemplated hereby or thereby, without the prior written
consent of the Company in each instance.


 


ARTICLE III.

Representations, Warranties and Additional Covenants of Stockholders


 


Each Stockholder represents,
warrants and covenants to the Company that:


 


3.1             
Ownership. Such Stockholder is the sole Beneficial Owner and the record and legal owner of the Subject Shares identified
opposite such Stockholder’s name on Schedule A and such shares constitute all of the capital stock of PharmAthene
Beneficially Owned by such Stockholder. Such Stockholder has good and valid title to all of the Subject Shares, free and clear
of all Liens, claims, options, proxies, voting agreements and security interests and has the sole right to such Subject Shares
and there are no restrictions on rights of disposition or other Liens pertaining to such Subject Shares. None of the Subject Shares
is subject to any voting trust or other contract with respect to the voting thereof, and no proxy, power of attorney or other authorization
has been granted with respect to any of such Subject Shares.


 






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3.2             
Authority and Non-Contravention.


 


(a)               
Such Stockholder has all necessary power and authority to execute and deliver this Agreement,
to perform its obligations hereunder and to consummate the transactions contemplated hereby. The execution and delivery of this
Agreement by such Stockholder and the consummation by such Stockholder of the transactions contemplated hereby have been duly and
validly authorized by all necessary action, and no other proceedings on the part of such Stockholder are necessary to authorize
this Agreement or to consummate the transactions contemplated hereby.


 


(b)              
Assuming due authorization, execution and delivery of this Agreement by the Company, this
Agreement has been duly and 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) to the extent limited by
applicable bankruptcy, insolvency or similar laws affecting creditors’ rights and (ii) the remedy of specific performance
and injunctive and other forms of equitable relief may be subject to equitable defenses and to the discretion of the court before
which any proceeding therefor may be brought.


 


(c)               
Such Stockholder is not nor will it be required to make any filing with or give any notice
to, or to obtain any consent from, any person in connection with the execution, delivery or performance of this Agreement or obtain
any permit or approval from any Governmental Entity for any of the transactions contemplated hereby, except to the extent required
by Section 13 or Section 16 of the Exchange Act and the rules promulgated thereunder.


 


(d)              
Neither the execution and delivery of this Agreement by such Stockholder nor the consummation
of the transactions contemplated hereby will directly or indirectly (whether with notice or lapse of time or both) (i) conflict
with, result in any violation of or constitute a default by such Stockholder under any mortgage, bond, indenture, agreement, instrument
or obligation to which such Stockholder is a party or by which it or any of the Subject Shares are bound, or violate any permit
of any Governmental Entity, or any applicable Law to which such Stockholder, or any of the Subject Shares, may be subject, or (ii) result
in the imposition or creation of any Lien upon or with respect to any of the Subject Shares; except, in each case, for conflicts,
violations, defaults or Liens that would not individually or in the aggregate be reasonably expected to prevent or materially impair
or delay the performance by such Stockholder of its obligations hereunder.


 


(e)               
Such Stockholder has sole voting power and sole power to issue instructions with respect to
the matters set forth in Article II hereof and sole power to agree to all of the matters set forth in this Agreement, in each case
with respect to all of the Subject Shares, with no limitations, qualifications or restrictions on such rights.


 


3.3             
Total Shares. Except as set forth on Schedule A, no Stockholder is the Beneficial Owner of, and does not have
(whether currently, upon lapse of time, following the satisfaction of any conditions, upon the occurrence of any event or any combination
of the foregoing) any right to acquire, any PharmAthene Shares or any securities convertible into or exchangeable or exercisable
for PharmAthene Shares. No Stockholder has any other interest in or voting rights with respect to any PharmAthene Shares or any
securities convertible into or exchangeable or exercisable for PharmAthene Shares.


 






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3.4             
Reliance. Each Stockholder understands and acknowledges that the Company is entering into the Merger Agreement in
reliance upon Stockholders’ execution, delivery and performance of this Agreement.


 


ARTICLE IV.

Representations, Warranties and Covenants of the Company


 


The Company represents,
warrants and covenants to Stockholders that:


 


(a)               
The Company has all necessary corporate power and authority to execute and deliver this Agreement
and to perform its obligations hereunder. The execution and delivery by the Company of this Agreement and the consummation by the
Company of the transactions contemplated hereby have been duly and validly authorized by the Company and no other corporate proceedings
on the part of the Company are necessary to authorize this Agreement or to consummate the transactions contemplated hereby.


 


(b)              
Assuming due authorization, execution and delivery of this Agreement by the Stockholders,
this Agreement has been duly and validly 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) to the extent limited by applicable
bankruptcy, insolvency or similar laws affecting creditors’ rights and (ii) the remedy of specific performance and injunctive
and other forms of equitable relief may be subject to equitable defenses and to the discretion of the court before which any proceeding
therefor may be brought.


 


ARTICLE V.

Dissenters’ Rights.


 


5.1             
Stockholder agrees not to exercise any rights of appraisal or any dissenters’ rights that Stockholder may have (whether
under applicable Law or otherwise) or could potentially have or acquire in connection with the Merger.


 


ARTICLE VI.

Term and Termination


 


6.1             
This Agreement will become effective upon its execution by the Stockholders and the Company. This Agreement will terminate
upon the earliest of (a) the Effective Time, (b) the termination of the Merger Agreement in accordance with Article VIII thereof,
(c) written notice by the Company to the Stockholders of the termination of this Agreement, or (d) any PharmAthene Recommendation
Withdrawal or Transaction Event Withdrawal (the date of the earliest of the events described in clauses (a), (b), (c), and (d),
the “Termination Date”). Notwithstanding the foregoing, Article VII of this Agreement shall survive any termination
hereof.


 






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ARTICLE VII.

General Provisions


 


7.1             
Action in Stockholder Capacity Only. Each Stockholder is entering into this Agreement solely in such Stockholder’s
capacity as a record holder and beneficial owner, as applicable, of the Subject Shares and not in such Stockholder’s capacity
as a director or officer of PharmAthene. Notwithstanding any asserted conflict, nothing herein will limit or affect any Stockholder’s
ability to act as an officer or director of PharmAthene, including, if Stockholder is a director of PharmAthene, its ability to
vote in favor of a PharmAthene Recommendation Withdrawal or Transaction Event Withdrawal, or to make any presentations to the PharmAthene
Board of Directors or take any other action that he or she determines to be necessary or appropriate in his or her discretion,
without regard to this Agreement or any conflict of interest.


 


7.2             
No Ownership Interest. Nothing contained in this Agreement will be deemed to vest in the Company or any of its Affiliates
any direct or indirect ownership or incidents of ownership of or with respect to the Subject Shares. All rights, ownership and
economic benefits of and relating to the Subject Shares will remain and belong to the Stockholders, and neither the Company nor
any of its Affiliates will have any authority to manage, direct, superintend, restrict, regulate, govern or administer any of the
policies or operations of PharmAthene or exercise any power or authority to direct any Stockholder in the voting of any of the
Subject Shares, except as otherwise expressly provided herein or in the Merger Agreement.


 


7.3             
Notices. All notices, consents, waivers and other communications under this Agreement must be in writing (including
facsimile or similar writing) and must be given:


 


If to the Company,
to:


 


Theraclone Sciences, Inc.

Seattle Life Sciences Building 


1124 Columbia Street, Suite 300 


Seattle, WA 98104


Attention: Chief Executive Officer


Facsimile No: (206) 805-1699


 


with a copy (which will not constitute
notice) to:


 


Fenwick & West LLP

1191 Second Avenue, 10th Floor

Seattle, WA 98101

Attention: Stephen M. Graham


Telecopy: (206) 389-4511


 


If to any Stockholder,
to such Stockholder at its address set forth on Schedule A,


 


or such other address or facsimile number
as a party may hereafter specify for the purpose by notice to the other parties hereto. Each notice, consent, waiver or other communication
under this Agreement will be effective only (a) if given by facsimile, when the facsimile is transmitted to the facsimile
number specified in this Section and the appropriate facsimile confirmation is received or (b) if given by overnight courier
or personal delivery when delivered at the address specified in this Section.


 






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7.4             
Further Actions. Upon the request of any party to this Agreement, the other party will (a) furnish to the requesting
party any additional information, (b) execute and deliver, at their own expense, any other documents and (c) take any
other actions as the requesting party may reasonably require to more effectively carry out the intent of this Agreement. Each Stockholder
hereby agrees that the Company and PharmAthene may publish and disclose in the Form S-4 Registration Statement and Proxy Statement
(including all documents and schedules filed with the SEC) such Stockholder’s identity and ownership of Subject Shares and
the nature of such Stockholder’s commitments, arrangements, and understandings under this Agreement and may further file
this Agreement as an exhibit to the Form S-4 Registration Statement or in any other filing made by the Company and/or PharmAthene
with the SEC relating to the Merger Agreement or the transactions contemplated thereby. Each Stockholder agrees to notify the Company
promptly of any additional shares of capital stock of PharmAthene of which such Stockholder becomes the record or beneficial owner
after the date of this Agreement.


 


7.5             
Entire Agreement and Modification. This Agreement, the Proxy and any other documents delivered by the parties in
connection herewith constitute the entire agreement among the parties with respect to the subject matter hereof and supersede all
prior agreements and understandings, both written and oral, between the parties with respect to its subject matter and constitute
(along with the documents delivered pursuant to this Agreement) a complete and exclusive statement of the terms of the agreement
between the parties with respect to its subject matter. This Agreement may not be amended, supplemented or otherwise modified except
by a written document executed by the party against whose interest the modification will operate. The parties will not enter into
any other agreement inconsistent with the terms and conditions of this Agreement and the Proxy, or that addresses any of the subject
matters addressed in this Agreement and the Proxy.


 


7.6             
Drafting and Representation. The parties agree that the terms and language of this Agreement were the result of negotiations
between the parties and, as a result, there will be no presumption that any ambiguities in this Agreement will be resolved against
any party. Any controversy over construction of this Agreement will be decided without regard to events of authorship or negotiation.


 


7.7             
Severability. Any provision of this Agreement which is prohibited or unenforceable in any jurisdiction will, as to
such jurisdiction, be ineffective to the extent of such prohibition or unenforceability without affecting the validity or enforceability
of the remaining provisions hereof. Any such prohibition or unenforceability in any jurisdiction will not invalidate or render
unenforceable such provision in any other jurisdiction. If any provision of this Agreement is so broad as to be unenforceable,
the provision will be interpreted to be only so broad as is enforceable.


 


7.8             
No Third-Party Rights. No Stockholder may assign any of its rights or delegate any of its obligations under this
Agreement without the prior written consent of the Company. The Company may not assign any of its rights or delegate any of its
obligations under this Agreement with respect to any Stockholder without the prior written consent of such Stockholder. This Agreement
will apply to, be binding in all respects upon, and inure to the benefit of each of the respective successors, personal or legal
representatives, heirs, distributes, devisees, legatees, executors, administrators and permitted assigns of any Stockholder and
the successors and permitted assigns of the Company. Nothing expressed or referred to in this Agreement will be construed to give
any person, other than the parties to this Agreement, any legal or equitable right, remedy or claim under or with respect to this
Agreement or any provision of this Agreement except such rights as may inure to a successor or permitted assignee under this Section.


 


7.9             
Enforcement of Agreement. Each Stockholder acknowledges and agrees that the Company could be damaged irreparably
if any of the provisions of this Agreement are not performed in accordance with their specific terms and that any breach of this
Agreement by any Stockholder could not be adequately compensated by monetary damages. Accordingly, each Stockholder agrees that,
(a) it will waive, in any action for specific performance, the defense of adequacy of a remedy at law, and (b) in addition
to any other right or remedy to which the Company may be entitled, at law or in equity, the Company will be entitled to enforce
any provision of this Agreement by a decree of specific performance and to temporary, preliminary and permanent injunctive relief
to prevent breaches or threatened breaches of any of the provisions of this Agreement, without posting any bond or other undertaking.


 






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7.10         
Waiver. The rights and remedies of the parties to this Agreement are cumulative and not alternative. Neither any
failure nor any delay by a party in exercising any right, power or privilege under this Agreement, the Proxy or any of the documents
referred to in this Agreement will operate as a waiver of such right, power or privilege, and no single or partial exercise of
any such right, power or privilege will preclude any other or further exercise of such right, power or privilege or the exercise
of any other right, power or privilege. To the maximum extent permitted by applicable Law, (a) no claim or right arising out
of this Agreement, the Proxy or any of the documents referred to in this Agreement can be discharged by one party, in whole or
in part, by a waiver or renunciation of the claim or right unless in a written document signed by the other party, (b) no
waiver that may be given by a party will be applicable except in the specific instance for which it is given, and (c) no notice
to or demand on one party will be deemed to be a waiver of any obligation of that party or of the right of the party giving such
notice or demand to take further action without notice or demand as provided in this Agreement, the Proxy or the documents referred
to in this Agreement.


 


7.11         
Governing Law. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the
parties hereto will be governed by, construed under and enforced in accordance with the laws of the State of Delaware, without
giving effect to principles of conflict or choice of laws.


 


7.12         
Consent to Jurisdiction. Any suit, action or proceeding seeking to enforce any provision of, or based on any matter
arising out of or in connection with, this Agreement, the Proxy or the transactions contemplated hereby or thereby will be brought
exclusively in the United States District Court for the District of Delaware or, if such court does not have jurisdiction over
the subject matter of such proceeding or if such jurisdiction is not available, in the Court of Chancery of the State of Delaware,
County of New Castle, and each of the parties hereby consents to the exclusive jurisdiction of those courts (and of the appropriate
appellate courts therefrom) in any suit, action or proceeding and irrevocably waives, to the fullest extent permitted by applicable
Law, any objection which it may now or hereafter have to the laying of the venue of any suit, action or proceeding in any of those
courts or that any suit, action or proceeding which is brought in any of those courts has been brought in an inconvenient forum.
Process in any suit, action or proceeding may be served on any party anywhere in the world, whether within or without the jurisdiction
of any of the named courts. Without limiting the foregoing, each party agrees that service of process on it by notice as provided
in Section 6.3 will be deemed effective service of process. EACH OF THE PARTIES HERETO HEREBY IRREVOCABLY WAIVES, TO
THE FULLEST EXTENT PERMITTED BY LAW, ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM (WHETHER BASED ON CONTRACT,
TORT OR OTHERWISE) ARISING OUT OF OR RELATING TO THIS AGREEMENT OR ANY OF THE TRANSACTIONS CONTEMPLATED HEREBY.


 


7.13         
Counterparts. This Agreement may be executed in any number of counterparts, each of which will be deemed to be an
original, but all of which, taken together, will constitute one and the same instrument. A facsimile or electronic copy of a party’s
signature printed by a receiving facsimile machine or printer (including signatures in Adobe PDF or similar format) shall be deemed
an original signature for purposes hereof.


 






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7.14         
Expenses. Except as otherwise provided in this Agreement, all costs and expenses incurred in connection with this
Agreement and the transactions contemplated hereby will be paid by the party incurring such expenses.


 


7.15         
Headings; Construction. The headings contained in this Agreement are for reference purposes only and will not affect
in any way the meaning or interpretation of this Agreement. In this Agreement (a) words denoting the singular include the
plural and vice versa, (b) ”it” or “its” or words denoting any gender include all genders and (c) the
word “including” means “including without limitation,” whether or not expressed.


 


[Signature
page follows]








 


 






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IN WITNESS WHEREOF,
the parties hereto have caused this PharmAthene Voting and Lock-Up Agreement to be duly executed as of the day and year first above
written.


 


	THE COMPANY:	THERACLONE SCIENCES, INC.
	 	 	 
	 	By: 	          
	 	 	Name:
	 	 	Title:
	 	 	 
	STOCKHOLDERS:	 	 
	 	 	 
	 	 	          
	 	John M. Gill
	 	 	 
	 	 	          
	 	Brian A. Markison
	 	 	 
	 	 	          
	 	Joel McCleary
	 	 	 
	 	 	          
	 	Eric I. Richman
	 	 	 
	 	 	          
	 	Jeffrey W. Runge, M.D.
	 	 	 
	 	 	                                           
	 	Mitchel Sayare, Ph.D.
	 	 	 
	 	 	          
	 	Derace L. Schaffer, M.D.
	 	 
	 	 
	 	Steven St. Peter, M.D.
	 	 



[Signature Page to Voting and Lock-Up
Agreement]


 





 




    	 



    	 



    

 


	 	 	          
	 	Linda L. Chang
	 	 	 
	 	 	          
	 	Francesca Cook
	 	 	 
	 	 	                                           
	 		Wayne Morges, Ph.D.
	 	 	 
	 	 	          
	 		Jordan Karp, J.D.



 


[Signature Page to Voting and Lock-Up
Agreement]








 






    	 



    	 



    

 


 


SCHEDULE
A


 


STOCKHOLDERS


 


	NAME AND
 ADDRESS OF STOCKHOLDERS	 	PharmAthene SHARES
 BENEFICIALLY OWNED	 
	John M. Gill	 	 	152,759	 
	 	 	 	 	 
	Brian A. Markison	 	 	40,000	 
	 	 	 	 	 
	Joel McCleary	 	 	288,559	 
	 	 	 	 	 
	Eric I. Richman	 	 	1,098,183	 
	 	 	 	 	 
	Jeffrey W. Runge, M.D.	 	 	117,700	 
	 	 	 	 	 
	Mitchel Sayare, Ph.D.	 	 	155,414	 
	 	 	 	 	 
	Derace L. Schaffer, M.D.	 	 	1,261,043	 
	 	 	 	 	 
	Steven St. Peter, M.D.	 	 	20,000	 
	 	 	 	 	 
	Linda L. Chang	 	 	87,500	 
	 	 	 	 	 
	Francesca Cook	 	 	370,843	 
	 	 	 	 	 
	Wayne Morges, Ph.D.	 	 	N/A	 
	 	 	 	 	 
	Jordan Karp, J.D.	 	 	392,371	 



 


 



    	 



    	 



    




 





EXHIBIT
A


 


IRREVOCABLE
PROXY


 


From and after the
date hereof and until the Termination Date (as defined below), on which date this proxy will terminate and be of no further force
or effect, the undersigned stockholder (“Stockholder”) of PharmAthene, Inc., a Delaware corporation (“PharmAthene”),
hereby irrevocably (to the full extent permitted by Section 212 of the Delaware General Corporation Law) grants to, and appoints,
Theraclone Sciences, Inc., a Delaware corporation (the “Company”), and any designee of the Company, and each
of them individually, as the sole and exclusive attorney and proxy of the undersigned, with full power of substitution and re-substitution,
to vote the Subject Shares (as defined in the Voting Agreement) of the Stockholder, or grant a consent or approval in respect of
the Subject Shares of the Stockholder, in a manner consistent with Section 2.2 of the Voting Agreement (as defined below). Upon
the undersigned’s execution of this Proxy, any and all prior proxies given by the undersigned with respect to any Subject
Shares relating to the voting rights expressly provided herein are hereby revoked and the undersigned agrees not to grant any subsequent
proxies with respect to the Subject Shares relating to such voting rights at any time prior to the Termination Date, on which date
this proxy will terminate and be of no further force or effect.


 


This Proxy is irrevocable,
is coupled with an interest and is granted pursuant to that certain PharmAthene Voting and Lock-Up Agreement (as amended from time
to time, the “Voting Agreement”) of even date herewith, by and among the Company and Stockholder, and is granted
in consideration of the Company entering into the Merger Agreement (as defined in the Voting Agreement). As used herein, the term
“Termination Date,” and all capitalized terms used herein and not otherwise defined, will have the meanings
set forth in the Voting Agreement. The Stockholder agrees that this proxy will be irrevocable until the Termination Date,
on which date this proxy will terminate and be of no further force or effect, and is coupled with an interest sufficient at
law to support an irrevocable proxy and given to the Company as an inducement to enter into the Merger Agreement and, to the extent
permitted under applicable law, will be valid and binding on any person to whom Stockholder may transfer any of his, her or its
Subject Shares in breach of the Voting Agreement. The Stockholder hereby ratifies and confirms all that such irrevocable proxy
may lawfully do or cause to be done by virtue hereof.


 


The attorneys and proxies
named above, and each of them, are hereby authorized and empowered by the undersigned, at any time prior to the Termination Date,
on which date this proxy will terminate and be of no further force or effect, to act as the undersigned’s attorney and proxy
to vote the Subject Shares, and to exercise all voting and other rights of the undersigned with respect to the Subject Shares (including,
without limitation, the power to execute and deliver written consents pursuant to Section 228 of the Delaware General Corporation
Law), at every annual, special or adjourned meeting of the stockholders of the Company and in every written consent in lieu of
such meeting in a manner consistent with Section 2.2 of the Voting Agreement.


 


This Proxy will be
binding upon the heirs, estate, executors, personal representatives, successors and assigns of Stockholder (including any transferee
of any of the Subject Shares), and all authority herein conferred or agreed to be conferred will survive the death or incapacity
of the Stockholder.


 






    	 



    	 



    

 


 


If any provision of
this Proxy or any part of any such provision is held under any circumstances to be invalid or unenforceable in any jurisdiction,
then (a) such provision or part thereof will, with respect to such circumstances and in such jurisdiction, be deemed amended
to conform to applicable laws so as to be valid and enforceable to the fullest possible extent, (b) the invalidity or unenforceability
of such provision or part thereof under such circumstances and in such jurisdiction will not affect the validity or enforceability
of such provision or part thereof under any other circumstances or in any other jurisdiction, and (c) the invalidity or unenforceability
of such provision or part thereof will not affect the validity or enforceability of the remainder of such provision or the validity
or enforceability of any other provision of this Proxy. Each provision of this Proxy is separable from every other provision of
this Proxy, and each part of each provision of this Proxy is separable from every other part of such provision.


 


Dated: ______________, 2013


 


  


	 	 
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