puma13g_17900.htm
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
 
SCHEDULE 13G
 
 
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. ___)*
 
 
 
Puma Biotechnology, Inc
(Name of Issuer)
 
 
Common Stock
(Title of Class of Securities)
 
          
74587V107
(CUSIP Number)
 
 
December 31, 2015
(Date of Event Which Requires Filing of this Statement)

 
 
 
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
 
x           Rule 13d-1(b)
o            Rule 13d-1(c)
o            Rule 13d-1(d)
 
 
* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).
 
 
 
 
 
   CUSIP No.  74587V107
13G
Page 2 of 5 Pages
 
1.
NAME OF REPORTING PERSONS
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS
 
Grantham, Mayo, Van Otterloo & Co. LLC    04-2691242
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
(a) o
(b) o
3.
SEC USE ONLY
 
 
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
 
Boston, Massachusetts  USA
 
 
NUMBER OF
5.
SOLE VOTING POWER
 
2,899,776
SHARES
BENEFICIALLY
OWNED BY
6.
SHARED VOTING POWER
 
0
EACH
REPORTING
PERSON
7.
SOLE DISPOSITIVE POWER
 
2,899,776
WITH
8.
SHARED DISPOSITIVE POWER
 
0
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
2,899,776
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES   o
 
 
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
8.9401%
12.
TYPE OF REPORTING PERSON
 
IA
 
 
 
 
 
 
 
 
 
 
 
 
    CUSIP No.  74587V107
13G
Page 3 of 5 Pages
 
 
Item 1.
 
 
(a)
Name of Issuer
Puma Biotechnology, Inc
     
 
(b)
Address of Issuer’s Principal Executive Offices
10880 Wilshire Boulevard, Suite 2150, Los Angeles, CA  90024
 
 
Item 2.
 
 
(a)
Name of Person Filing
GRANTHAM, MAYO, VAN OTTERLOO & CO. LLC
     
 
(b)
Address of the Principal Office or, if none, residence
40 Rowes Wharf, Boston, MA  02110
     
 
(c)
Citizenship
USA
     
 
(d)
Title of Class of Securities
Common Stock
     
 
(e)
CUSIP Number
74587V107
 
 
Item 3.  If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
 
 
(a)
o
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
       
 
(b)
o
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
       
 
(c)
o
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
       
 
(d)
o
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
       
 
(e)
x
An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
       
 
(f)
o
An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
       
 
(g)
o
A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);
       
 
(h)
o
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
       
 
(i)
o
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
       
 
(j)
o
Group, in accordance with §240.13d-1(b)(1)(ii)(J).
       
 
 
 
 
 
    CUSIP No.  74587V107
13G
Page 4 of 5 Pages
 
 
Item 4.  Ownership.
 
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
 
 
(a)
  
Amount beneficially owned:   2,899,776
         
 
(b)
  
Percent of class:    8.9401%
         
 
(c)
  
Number of shares as to which the person has:  2,899,776
         
     
(i)
Sole power to vote or to direct the vote  2,899,776
         
     
(ii)
Shared power to vote or to direct the vote  N/A
         
     
(iii)
Sole power to dispose or to direct the disposition of  2,899,776
         
     
(iv)
Shared power to dispose or to direct the disposition of  N/A
         
 
Instruction. For computations regarding securities which represent a right to acquire an underlying security see §240.13d-3(d)(1).
 
 
Item 5.  Ownership of Five Percent or Less of a Class.
 
If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following o.
 
Instruction. Dissolution of a group requires a response to this item.
 
 
Item 6.  Ownership of More than Five Percent on Behalf of Another Person.
 
    Not applicable.
 
 
Item 7.  Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company.
 
    Not applicable. 
 
 
Item 8.  Identification and Classification of Members of the Group.
 
    Not applicable.
 
 
Item 9.  Notice of Dissolution of Group.
 
    Not applicable.
 
 
Item 10.  Certification.
 
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.
 
 
 
 
    CUSIP No.  74587V107
13G
Page 5 of 5 Pages
 

 
SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
 
 

 
 
 
February 12, 2016
Date
 
 
/s/ Gregory L. Pottle
Signature
 
 
Gregory L. Pottle, Chief Compliance Officer
Name/Title