EX-4.1






 Exhibit 4.1 
  





 
 INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE CUSIP 449585 10 8 SEE REVERSE FOR CERTAIN DEFINITIONS AND LEGENDS This certifies
that is the record holder of FULLY PAID AND NONASSESSABLE SHARES OF VOTING COMMON STOCK, $0.01 PAR VALUE PER SHARE, OF transferable on the books of the corporation IGM in person or BIOSCIENCES by duly authorized , I attorney NC. upon surrender of
this Certificate properly endorsed. This Certificate is not valid until countersigned by the Transfer Agent and registered by the Registrar. WITNESS the facsimile seal of the Corporation and the facsimile signatures of its duly authorized officers.
Dated: PRESIDENT & CHIEF EXECUTIVE OFFICER CHIEF FINANCIAL OFFICER COUNTERSIGNED AND REGISTERED: AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC (BROOKLYN, NY) TRANSFER AGENT AND REGISTRAR BY: AUTHORIZED SIGNATURE 













 The Corporation shall furnish without charge to each stockholder who so requests a statement
of the powers, designations, preferences and relative, participating, optional or other special rights of each class of stock of the Corporation or series thereof and the qualifications, limitations or restrictions of such preferences and/or rights.
Such requests shall be made to the Corporation’s Secretary at the principal office of the Corporation. 
 KEEP THIS CERTIFICATE IN A
SAFE PLACE. IF IT IS LOST, STOLEN, OR DESTROYED THE CORPORATION WILL REQUIRE A BOND INDEMNITY AS A CONDITION TO THE ISSUANCE OF A REPLACEMENT CERTIFICATE. 

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	 		  		 		 	Act.................................................................
		 		 	in common	 		  		 		 		  	(State)	  	
	COM PROP	 	–	 	as community property	 		  	UNIF TRF MIN ACT	 	– 	 	..................... Custodian (until age .................)
		 		 		 		  		 		 	(Cust)	  		  	
		 		 		 		  		 		 	.............................. under Uniform Transfers
		 		 		 		  		 		 	(Minor)	  		  	
		 		 		 		  		 		 	to Minors Act...............................................
		 		 		 		  		 		 		  	(State)	  	

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

FOR VALUE RECEIVED, _____________________________________________________ hereby sell(s), assign(s) and transfer(s) 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 within Certificate, and do hereby irrevocably constitute and appoint
	    
	                                      
                                         
                                         
                                         
                                         
                    attorney-in-fact
	to transfer the said stock on the books of the within named Corporation with full power of the substitution in the premises.
	
	Dated
                                         
       

  

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


  

					
			
	 By
	 	 	  	


			
		
	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. GUARANTEES BY A NOTARY PUBLIC ARE NOT ACCEPTABLE. SIGNATURE GUARANTEES MUST NOT BE DATED.