Form of Common Stock Certificate



 Exhibit 4.1 

	
	 






 NUMBER 
 SHARES 
 Puma Biotechnology 

INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE 

SEE REVERSE SIDE FOR CERTAIN DEFINITIONS 
 CUSIP 74587V 10 7 
 THIS CERTIFIES THAT 

is the owner of 
 FULLY PAID AND NON-ASSESSABLE COMMON SHARES, $0.0001 PAR VALUE, OF 
 PUMA BIOTECHNOLOGY, INC. 
 transferable on the
books of the Corporation by the holder hereof in person or by Attorney upon surrender of this certificate properly endorsed. This certificate is not valid until countersigned and registered by the Transfer Agent and Registrar. 

IN WITNESS WHEREOF, the said Corporation has caused this certificate to be signed by facsimile signatures of its duly
authorized officers. 
 Dated: 
 PRESIDENT & CHIEF EXECUTIVE OFFICER 

TREASURER 
 COUNTERSIGNED AND REGISTERED; WELLS FARGO BANK, N.A. 
 BY 
 TRANSFER AGENT AND REGISTRAR 

AUTHORIZED SIGNATURE 
 AMERICAN FINANCIAL PRINTING INCORPORATED - MINNEAPOLIS 







 



 
 THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH SHAREHOLDER WHO SO REQUESTS A
SUMMARY OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE, PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OF THE CORPORATION AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS OF SUCH PREFERENCES AND RIGHTS, AND THE
VARIATIONS IN RIGHTS, PREFERENCES AND LIMITATIONS DETERMINED FOR EACH SERIES, WHICH ARE FIXED BY THE CERTIFICATE OF INCORPORATION OF THE CORPORATION, AS AMENDED, AND THE RESOLUTIONS OF THE BOARD OF DIRECTORS OF THE CORPORATION, AND THE AUTHORITY OF
THE BOARD OF DIRECTORS TO DETERMINE VARIATIONS FOR FUTURE SERIES. SUCH REQUEST MAY BE MADE TO THE OFFICE OF THE SECRETARY OF THE CORPORATION OR TO THE TRANSFER AGENT. THE BOARD OF DIRECTORS MAY REQUIRE THE OWNER OF A LOST OR DESTROYED STOCK
CERTIFICATE, OR THE OWNER’S LEGAL REPRESENTATIVES, TO GIVE THE CORPORATION A BOND TO INDEMNIFY IT AND ITS TRANSFER AGENTS AND REGISTRARS AGAINST ANY CLAIM THAT MAY BE MADE AGAINST THEM ON ACCOUNT OF THE ALLEGED LOSS OR DESTRUCTION OF ANY SUCH
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: 
 UTMA -
Custodian 
 TEN COM - as tenants in common 

(Cust) (Minor) 
 TEN ENT - as tenants by entireties under Uniform Transfers to Minors 
 JT TEN - as joint tenants with right of survivorship and not as tenants in common Act (State) 
 Additional abbreviations may also be used though not in above list. 
 For value received hereby sell, assign, and transfer 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 X X 

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 WHATEVER. 
 SIGNATURE GUARANTEED 

ALL GUARANTEES MUST BE MADE BY A FINANCIAL INSTITUTION (SUCH AS A BANK OR BROKER) WHICH IS A PARTICIPANT IN THE SECURITIES
TRANSFER AGENTS MEDALLION PROGRAM (“STAMP”), THE NEW YORK STOCK EXCHANGE, INC. MEDALLION SIGNATURE PROGRAM (“MSP”), OR THE STOCK EXCHANGES MEDALLION PROGRAM (“SEMP”) AND MUST NOT BE DATED. GUARANTEES BY A NOTARY PUBLIC
ARE NOT ACCEPTABLE.