Specimen Warrant Certificate



 Exhibit 4.3 
  

[FORM OF WARRANT CERTIFICATE] 
  
 THIS WARRANT CERTIFICATE (I) CANNOT BE TRANSFERRED OR EXCHANGED PRIOR TO
                         , 200  , UNLESS FTN MIDWEST SECURITIES CORP. DETERMINES
THAT AN EARLIER DATE IS ACCEPTABLE, BUT IN NO EVENT PRIOR TO                          ,
200  , UNLESS INCLUDED WITH A SHARE OF COMMON STOCK OF PLATFORM ACQUISITION CORP. INTERNATIONAL (THE “COMPANY”) AS PART OF A UNIT AND (II) CANNOT BE EXERCISED IN WHOLE OR IN PART UNTIL THE LATER OF THE
COMPANY’S COMPLETION OF A BUSINESS COMBINATION OR                          ,
200  . 
  
 EXERCISABLE ONLY IF
COUNTERSIGNED BY THE WARRANT 
 AGENT AS PROVIDED HEREIN. 
  
 Warrant Certificate evidencing 
  
 Warrants to Purchase 
  
 Common Stock, par value $.0001 
  
 As described herein. 
  
 PLATFORM
ACQUISITION CORP. INTERNATIONAL 
  

			
	No.                    	  	 CUSIP No.


  
 NULL AND VOID AFTER
5:00 P.M., NEW YORK TIME, 
 ON
                         , 20  , OR UPON EARLIER REDEMPTION 
  
 This certifies that
                                        
     or registered assigns is the registered holder of
                                       
  warrants to purchase certain securities (each a “Warrant”). Each Warrant entitles the holder thereof, subject to the provisions contained herein and in the Warrant Agreement (as defined below), to purchase from Platform
Acquisition Corp. International, a Delaware corporation (the “Company”), one share of the Company’s Common Stock (each, a “Share”), at the Exercise Price set forth below. The exercise price of each Warrant (the
“Exercise Price”) shall be $5.00 initially, subject to adjustments as set forth in the Warrant Agreement (as defined below). 
  
 Subject to the terms of the Warrant Agreement, each Warrant evidenced hereby may be exercised in whole but not in part at any time, as specified herein, on any Business
Day (as defined below) occurring during the period (the “Exercise Period”) commencing on the later of the Company’s completion of a Business Combination (as defined below) or
                         , 200   and ending at 5:00 P.M., New York time, on
                         , 20   (the “Expiration Date”). Each Warrant
remaining unexercised after 5:00 P.M., New York time, on the Expiration Date shall become null and void, and all rights of the holder of this Warrant Certificate evidencing such Warrant shall cease. 
  
 The holder of the Warrants represented by this Warrant Certificate may exercise any Warrant
evidenced hereby by delivering, not later than 5:00 P.M., New York time, on any Business Day during the Exercise Period (the “Exercise Date”) to Mellon Investor Services LLC (the “Warrant Agent”, which term includes any successor
warrant agent under the Warrant Agreement described 







 below) at its stock transfer division at
                                , (i) this Warrant Certificate and the
Warrants to be exercised (the “Book-Entry Warrants”) free on the records of The Depository Trust Company (the “Depository”) to an account of the Warrant Agent at the Depository designated for such purpose in writing by the
Warrant Agent to the Depository, (ii) an election to purchase (“Election to Purchase”), properly executed by the holder hereof on the reverse of this Warrant Certificate properly executed by the institution in whose account the
Warrant is recorded on the records of the Depository (the “Participant”), and substantially in the form included on the reverse of hereof and (iii) the Exercise Price for each Warrant to be exercised in lawful money of the United
States of America by certified or official bank check or by bank wire transfer in immediately available funds. If any of (a) this Warrant Certificate or the Book-Entry Warrants, (b) the Election to Purchase, or (c) the Exercise Price
therefor, is received by the Warrant Agent after 5:00 P.M., New York time, on the specified Exercise Date, the Warrants will be deemed to be received and exercised on the Business Day next succeeding the Exercise Date. If the date specified as the
Exercise Date is not a Business Day, the Warrants will be deemed to be received and exercised on the next succeeding day which is a Business Day. If the Warrants to be exercised are received or deemed to be received after the Expiration Date, the
exercise thereof will be null and void and any funds delivered to the Warrant Agent will be returned to the holder as soon as practicable. In no event will interest accrue on funds deposited with the Warrant Agent in respect of an exercise or
attempted exercise of Warrants. The validity of any exercise of Warrants will be determined by the Warrant Agent in its sole discretion and such determination will be final and binding upon the holder of the Warrants and the Company. Neither the
Warrant Agent nor the Company shall have any obligation to inform a holder of Warrants of the invalidity of any exercise of Warrants. 
  
 Prior to the commencement of and during the Exercise Period, the Company must use commercially reasonable best efforts to file with the Commission any
post-effective amendment to the Registration Statement, a new registration statement or any other filings with the Commission necessary to cause to become effective and to maintain the effectiveness of the registration under the Securities Act of
the issuance of the Common Stock issuable upon exercise of any Warrant evidenced by this Warrant Certificate, which obligations will terminate upon the expiration or redemption thereof in accordance with the provisions of the Warrant Agreement (or,
if the Company completes a going private transaction prior to such expiration or redemption, at such time as such transaction is completed). 
  
 The Company shall not be obligated to deliver any securities pursuant to the exercise of any Warrant evidenced by this Warrant Certificate and shall have no obligation to
settle in any other manner, including cash, the Warrant exercise unless a registration statement under the Securities Act with respect to the issuance of the securities that shall have been issuable upon such exercise is effective and unless
issuance of such securities is qualified or exempt from qualification under applicable securities laws of the states or other jurisdictions in which the registered holder of the Warrant evidenced by this Warrant Certificate resides. If such
registration statement is not effective or the issuance of such securities is not exempt as described in the preceding sentence, the registered holder of such Warrant will not be entitled to exercise such Warrant and such Warrant may have no value
and expire worthless. In no event shall the Company be liable for, nor shall any registered holder of Warrants be entitled to receive, (a) any net-cash settlement or other consideration in lieu of physical settlement in securities or
(b) physical settlement in securities upon exercise of any Warrant due to the inability to exercise any Warrant, or otherwise, unless the conditions and requirements set forth in Sections 3.03 and 6.07 of the 







 Warrant Agreement shall have been satisfied. Except with respect to the right to receive the Redemption Price (as set
forth in Section 4.01 of the Warrant Agreement), each Warrant not exercised on or before such time as the Expiration Date will become null and void, and all rights thereunder and all rights in respect thereof under the Warrant Agreement will
expire. 
  
 As used herein, the term “Business Day” means any day that
is not a Saturday or Sunday and is not a United States federal holiday or a day on which banking institutions generally are authorized or obligated by law or regulation to close in New York and New Jersey. 
  
 As used herein, the term “Business Combination” shall mean the acquisition by the
Company, whether by merger, capital stock exchange, asset acquisition or other similar type of combination, of one or more operating businesses in the healthcare-related sector, having, collectively, a fair market value (as calculated in accordance
with the Company’s Certificate of Incorporation) of at least 80% of the Company’s net assets at the time of such merger, capital stock exchange, asset acquisition or other similar type of combination. 
  
 Warrants may be exercised only in whole numbers of Warrants. If fewer than all of the
Warrants evidenced by this Warrant Certificate are exercised, a new Warrant Certificate for the number of Warrants remaining unexercised shall be executed by the Company and countersigned by the Warrant Agent as provided in Section 1.02 of the
Warrant Agreement, and delivered to the holder of this Warrant Certificate at the address specified on the books of the Warrant Agent or as otherwise specified by such registered holder. 
  
 This Warrant Certificate is issued under and in accordance with the Warrant Agreement, dated as of
                    , 200   (the “Warrant Agreement”), between the Company and the Warrant Agent and is subject to the
terms and provisions contained in the Warrant Agreement, to all of which terms and provisions the holder of this Warrant Certificate and the beneficial owners of the Warrants represented by this Warrant Certificate consent by acceptance hereof.
Copies of the Warrant Agreement are on file and can be inspected at the above-mentioned office of the Warrant Agent and at the office of the Company at 330 Primrose Road, Suite 300, Burlingame, CA 94010. Capitalized terms used herein that are not
defined herein shall have the meanings given to them in the Warrant Agreement. 
  
 At any time during the Exercise Period, the Company may, at its option, redeem all (but not part) of the then outstanding Warrants upon giving notice in accordance with the terms of the Warrant Agreement (the “Redemption Notice”),
at the price of $0.01 per Warrant (the “Redemption Price”); provided, that the last sales price of the Shares has been at least $8.50 per Share, on each of twenty (20) trading days within any thirty (30) trading day period
ending on the third Business Day prior to the date on which the Redemption Notice is given. In the event the Company shall elect to redeem all the then outstanding Warrants, the Company shall fix a date for such redemption (the “Redemption
Date”); provided, that such date shall occur prior to the expiration of the Exercise Period. The Warrants may be exercised in accordance with the terms of this Agreement at any time after a Redemption Notice shall have been given by the
Company pursuant to this Article IV; provided, however, that no Warrants may be exercised subsequent to the expiration of the Exercise Period; provided, further, that all rights whatsoever with respect to the Warrants
shall cease on the Redemption Date, other than to the right to receive the Redemption Price. 
  
 The accrual of dividends, if any, on the Shares issued upon the valid exercise of any Warrant will be governed by the terms generally applicable to such Shares. From and after the issuance of such Shares, the former
holder of the Warrants exercised will be entitled to the benefits generally available to other holders of Shares and such former holder’s right to receive payments of dividends and any other amounts payable in respect of the Shares shall be
governed by, and shall be subject to, the terms and provisions generally applicable to such Shares. 







 The Exercise Price and the number of Shares purchasable upon the exercise of each Warrant shall be subject to adjustment
as provided pursuant to Section 2.04 of the Warrant Agreement. 
  
 Prior to
the Detachment Date, the Warrants represented by this Warrant Certificate may be exchanged or transferred only together with the Shares to which such Warrant is attached (together, a “Unit”), and only for the purpose of effecting, or in
conjunction with, an exchange or transfer of such Unit. Additionally, prior to the Detachment Date, each transfer of such Unit on the register of the Units shall operate also to transfer the Warrants included in such Units. From and after the
Detachment Date, the above provisions shall be of no further force and effect. Upon due presentment for registration of transfer or exchange of this Warrant Certificate at the stock transfer division of the Warrant Agent, the Company shall execute,
and the Warrant Agent shall countersign and deliver, as provided in Section 1.02 of the Warrant Agreement, in the name of the designated transferee one or more new Warrant Certificates of any authorized denomination evidencing in the aggregate
a like number of unexercised Warrants, subject to the limitations provided in the Warrant Agreement. 
  
 Neither this Warrant Certificate nor the Warrants evidenced hereby shall entitle the holder hereof or thereof to any of the rights of a holder of the Shares, including, without limitation, the right to receive
dividends, if any, or payments upon the liquidation, dissolution or winding up of the Company or to exercise voting rights, if any. 
  
 The Warrant Agreement and this Warrant Certificate may be amended as provided in the Warrant Agreement including, under certain circumstances described therein, without
the consent of the holder of this Warrant Certificate or the Warrants evidenced thereby. 
  
 THIS WARRANT CERTIFICATE AND ALL RIGHTS HEREUNDER AND UNDER THE WARRANT AGREEMENT SHALL BE GOVERNED BY AND INTERPRETED AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS
FORMED AND TO BE PERFORMED ENTIRELY WITHIN THE STATE OF NEW YORK, WITHOUT REGARD TO THE CONFLICTS OF LAW PROVISIONS THEREOF TO THE EXTENT SUCH PRINCIPLES OR RULES WOULD REQUIRE OR PERMIT THE APPLICATION OF THE LAWS OF ANOTHER JURISDICTION.

  
 This Warrant Certificate shall not be entitled to any benefit under the
Warrant Agreement or be valid or obligatory for any purpose, and no Warrant evidenced hereby may be exercised, unless this Warrant Certificate has been countersigned by the manual signature of the Warrant Agent. 
  
 IN WITNESS WHEREOF, the Company has caused this instrument
to be duly executed. 
  
 Dated as of
                         , 200   
  

			
	 PLATFORM ACQUISITION CORP.
 INTERNATIONAL

		
	 By:
	 	  

		 	Authorized Officer


  

			
	 MELLON INVESTOR SERVICES LLC,
     as Warrant Agent

		
	 By:
	 	  

		 	Authorized Officer








 [REVERSE] 
  
 Instructions for Exercise of Warrant 
  
 To exercise the Warrants evidenced hereby, the holder or Participant must, by 5:00 P.M., New York time, on the specified Exercise Date, deliver to the Warrant Agent at
its stock transfer division, a certified or official bank check or a wire transfer in immediately available funds, in each case payable to the Warrant Agent at Account No.
            , in an amount equal to the Exercise Price in full for the Warrants exercised. In addition, the Warrant holder or Participant must provide the information required
below and deliver this Warrant Certificate to the Warrant Agent at the address set forth below and the Book-Entry Warrants to the Warrant Agent in its account with the Depository designated for such purpose. The Warrant Certificate and this Election
to Purchase must be received by the Warrant Agent by 5:00 P.M., New York time, on the specified Exercise Date. 
  
 ELECTION TO PURCHASE 
 TO BE EXECUTED IF WARRANT HOLDER DESIRES 
 TO EXERCISE THE WARRANTS EVIDENCED HEREBY 
  
 The undersigned hereby irrevocably elects to exercise, on
                ,             (the “Exercise Date”),
                 Warrants, evidenced by this Warrant Certificate, to
purchase,                of the shares of Common Stock (each, a “Share”) of Platform Acquisition Corp. International, a Delaware corporation (the
“Company”), and represents that on or before the Exercise Date such holder has tendered payment for such Shares by certified or official bank check or bank wire transfer in immediately available funds to the order of the Company c/o Mellon
Investor Services LLC, [address], in the amount of $                     in accordance with the terms hereof. The undersigned requests
that said number of Shares be in fully registered form, registered in such names and delivered, all as specified in accordance with the instructions set forth below. 
  
 If said number of Shares is less than all of the Shares purchasable hereunder, the undersigned requests that a new Warrant Certificate
evidencing the remaining balance of the Warrants evidenced hereby be issued and delivered to the holder of the Warrant Certificate unless otherwise specified in the instructions below. 
  

			
	Dated:                        ,           
 	  	
		
	Name                                    	  	(Please Print)
		
	/    /    /    / - /    /    /-
/    /    /    /    /	  	
	 (Insert Social Security or
 Other
Identifying
	  	
	Number of Holder)	  	Address                                   
 
		
	            Signature
                                	  	








 This Warrant may only be exercised by presentation to the Warrant Agent at one of the
following locations: 
  
 By hand at: 

 
 By mail at: 
  
 The method of delivery of this Warrant Certificate is at the option and risk of the
exercising holder and the delivery of this Warrant Certificate will be deemed to be made only when actually received by the Warrant Agent. If delivery is by mail, registered mail with return receipt requested, properly insured, is recommended. In
all cases, sufficient time should be allowed to assure timely delivery. 
  
 (Instructions as to form and delivery of Shares and/or Warrant Certificates) 








					
	Name in which Shares are to be registered if other than in the name of the registered holder of this Warrant Certificate:	  		  	
		  		  	  

			
	Address to which Shares are to be mailed if other than to the address of the registered holder of this Warrant Certificate as shown on the books of the Warrant Agent:	  		  	
			
		  		  	  

		  		  	 (Street Address)

		  		  	  

		  		  	 (City and State) (Zip Code)

			
		  		  	 Dated:

		  		  	  

		  		  	 Signature

			
		  		  	Signature must conform in all respects to the name of the holder as specified on the face of this Warrant Certificate. If Shares, or a Warrant Certificate evidencing unexercised Warrants, are
to be issued in a name other than that of the registered holder hereof or are to be delivered to an address other than the address of such holder as shown on the books of the Warrant Agent, the above signature must be guaranteed by a an Eligible
Guarantor Institution (as that term is defined in Rule 17Ad-15 of the Securities Exchange Act of 1934, as amended).
			
	 SIGNATURE GUARANTEE
	  		  	
	 Name of Firm
                                        
          
	  		  	
	 Address
                                        
                  
	  		  	
	 Area Code
	  		  	
	     and Number
                                        
        
	  		  	
	 Authorized
	  		  	
	     Signature
                                        
            
	  		  	
	 Name
                                        
                       
	  		  	
	 Title
                                        
                         
	  		  	
	 Dated:
                        , 200  
	  		  	








 ASSIGNMENT 
  
 (FORM OF ASSIGNMENT TO BE EXECUTED IF WARRANT HOLDER 
 DESIRES TO TRANSFER WARRANTS EVIDENCED HEREBY) 
  
 FOR
VALUE RECEIVED,
                                       
                                        
                                        
                  HEREBY SELL(S), ASSIGN(S) AND TRANSFER(S)
UNTO                                       
                                        
                                        
         
                                       
                                        
                                        
                                        
                                        
      
  

			
	(Please print name and address	  	(Please insert social security or
	including zip code of assignee)	  	other identifying number of assignee)

  
 the rights represented by the within
Warrant Certificate and does hereby irrevocably constitute and appoint                      Attorney to transfer said Warrant
Certificate on the books of the Warrant Agent with full power of substitution in the premises. 
  
 Dated: 
  

					
		 		 	  

		 		 	Signature
		 		 	(Signature must conform in all respects to the name of the holder as specified on the face of this Warrant Certificate and must bear a signature guarantee by an Eligible Guarantor
Institution (as that term is defined in Rule 17Ad-15 of the Securities Exchange Act of 1934, as amended).
			
	 SIGNATURE GUARANTEE
	 		 	
	 Name of Firm
                                        
          
	 		 	
	 Address
                                        
                  
	 		 	
	 Area Code
	 		 	
	     and Number
                                        
        
	 		 	
	 Authorized
	 		 	
	     Signature
                                        
            
	 		 	
	 Name
                                        
                       
	 		 	
	 Title
                                        
                         
	 		 	
	 Dated:
                        , 200