exv4w2









Exhibit 4.2









 









 





     The Corporation will furnish without charge to each stockholder who so requests the powers,
designations, preferences, and relative, participating, optional, or other special rights of each
class of stock or series thereof and the qualifications, limitations, or restrictions of such
preferences and/or rights.



     The following abbreviations, when used in the inscription on the face of this certificate,
shall be construed as though they were written out in full according to applicable laws or
regulations:



	 	 	 	 	 	 	 	 	 	 	 	 	 
	 

	 	TEN COM
	 	—
	 	as tenants in common
	 	 	 	UNIF GIFT MIN ACT—
	 	                    Custodian                    
	 

	 	TEN ENT
	 	—
	 	as tenants by the entireties
	 	 	 	 	 	     (Cust)                         (Minor)
	 

	 	JT TEN
	 	—
	 	as joint tenants with right of
	 	 	 	 	 	under Uniform Gifts to Minors
	 

	 	 	 	 	 	survivorship and not as
tenants in common
	 	 	 	 	 	Act                                        
                         (State)






Additional abbreviations may also be used though not in the above list.





For value received,
the undersigned hereby sells, assigns and transfers unto




PLEASE INSERT SOCIAL SECURITY OR OTHER





        IDENTIFYING NUMBER OF ASSIGNEE












      




 



(PLEASE PRINT OR
TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)





 





 





 





shares
of the capital stock represented by the within Certificate, and do hereby irrevocably
constitute and appoint




 





Attorney
to transfer the said stock on the books of the within named Corporation with full power
of substitution in the premises. 

Dated                                         



	 	 	 
	 

	 	 
	 

	 	THE SIGNATURE TO THIS ASSIGNMENT MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE
	NOTICE:
	 	CERTIFICATE IN EVERY PARTICULAR,
WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATEVER.







Signature(s) Guaranteed:




 





THE
SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED
SIGNATURE GUARANTEE MEDALLION PROGRAM), PURSUANT TO S.E.C. RULE 17Ad-15.



This certificate also evidences and entitles the holder hereof to certain rights as set forth in a
Rights Agreement between Molecular Insight Pharmaceuticals, Inc. and American Stock Transfer &
Trust Company, LLC, dated as of January 30, 2009, and as such agreement may be amended (the “Rights
Agreement”), the terms of which are hereby incorporated herein by reference and a copy of which is
on file at the principal executive offices of Molecular Insight Pharmaceuticals, Inc. Under certain
circumstances, as set forth in the Rights Agreement, such Rights will be evidenced by separate
certificates and will no longer be evidenced by this certificate. Molecular Insight
Pharmaceuticals, Inc. will mail to the holder of this certificate a copy of the Rights Agreement
without charge after receipt of a written request therefor. Under certain circumstances as set
forth in the Rights Agreement, Rights issued to, or held by, an Acquiring Person or any Affiliate
or Associate thereof (as such terms are defined in the Rights Agreement), whether held by such
person or any subsequent holder, shall become null and void.