Schedule 13G

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. )*

Whiting Petroleum Corporation
(Name of Issuer)
Common Stock
(Title of Class of Securities)
966387102
(CUSIP Number)
November 23, 2009
(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

     o Rule 13d-1(b)

     þ 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 the 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.
 
966387102 
 

 

           
1   NAMES OF REPORTING PERSONS
George Kaiser Family Foundation
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   þ
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  State of Oklahoma
       
  5   SOLE VOTING POWER
     
NUMBER OF   3,874,996 shares
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   -0- shares
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   3,874,996 shares
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    -0- shares
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  3,874,996 shares
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  7.6%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  CO — Not For Profit


 

                     
CUSIP No.
 
966387102 
 

 

           
1   NAMES OF REPORTING PERSONS
Frederic Dorwart
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   þ
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  United States
       
  5   SOLE VOTING POWER
     
NUMBER OF   3,874,996 shares
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   -0- shares
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   3,874,996 shares
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    -0- shares
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  3,874,996 shares
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  7.6%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IN


 

                     
CUSIP No.
 
966387102 
 

 

           
1   NAMES OF REPORTING PERSONS
Philip Frohlich
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   þ
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  United States
       
  5   SOLE VOTING POWER
     
NUMBER OF   3,874,996 shares
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   -0- shares
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   3,874,996 shares
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    -0- shares
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  3,874,996 shares
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  7.6%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IN


 

                     
CUSIP No.
 
966387102 
 

 

           
1   NAMES OF REPORTING PERSONS
Philip Lakin, Jr.
     
     
2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

  (a)   o
  (b)   þ
     
3   SEC USE ONLY
   
   
     
4   CITIZENSHIP OR PLACE OF ORGANIZATION
   
  United States
       
  5   SOLE VOTING POWER
     
NUMBER OF   3,874,996 shares
       
SHARES 6   SHARED VOTING POWER
BENEFICIALLY    
OWNED BY   -0- shares
       
EACH 7   SOLE DISPOSITIVE POWER
REPORTING    
PERSON   3,874,996 shares
       
WITH: 8   SHARED DISPOSITIVE POWER
     
    -0- shares
     
9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
   
  3,874,996 shares
     
10   CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
   
  o
     
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
   
  7.6%
     
12   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
   
  IN


 

                     
CUSIP No.
 
966387102 
 
Item 1 (a). Name of Issuer: Whiting Petroleum Corporation
Item 1 (b). Address of Issuer’s Principal Executive Offices:
1700 Broadway, Suite 2300
Denver, CO 80290-2300
Item 2 (a). Name of Person Filing: This Schedule 13G with respect to the Common Stock of Whiting Petroleum Corporation is filed by George Kaiser Family Foundation (“GKFF”). Mr. Dorwart, Mr. Frohlich and Mr. Lakin are co-trustees for GKFF.
Item 2 (b). Address of Principal Business Office or, if none, Residence:
The address of the principal business office of GKFF is 124 East Fourth Street, Suite 100, Tulsa, Oklahoma 74103. The address of the principal business offices co-trustees is as follows: Frederic Dorwart is 124 E. 4th Street, Tulsa, Oklahoma, NA; Philip Frohlich, 1924 South Utica, Suite 1120, Tulsa, Oklahoma 74104; Philip Lakin Jr., 7030 South Yale, Suite 600, Tulsa, Oklahoma 74136.
Item 2 (c). Citizenship: GKFF was formed under the laws of the State of Oklahoma. Mr. Dorwart, Mr. Frohlich and Mr. Mr. Lakin are a citizen of the United State of America.
Item 2 (d). Title of Class of Securities: Common Stock, par value $0.001 per share
Item 2 (e). CUSIP No: 966387102
Item 3. If this Statement is filed pursuant to Rule 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a: Not applicable.
Item 4. Ownership
The percentages used herein and in the rest of this Schedule 13G are calculated based upon a total of 50,845,106 shares of Common Stock issued and outstanding as of October 15, 2009, as reported in company’s Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2009. The shared beneficially owned by each of the entities owned includes 1,062,500 shares which may be required to be purchased in the next 60 days pursuant to put options granted by GKFF.
A. GKFF
GKFF’s holdings are as follows:
  (a)   Amount Beneficially Owned: 3,874,996 shares
 
  (b)   Percent of Class: 7.6%
 
  (c)   Number of Shares as to which Such Person has:
  (i)   sole power to vote or to direct the vote 3,874,996 shares
 
  (ii)   shared power to vote or to direct the vote -0- shares
 
  (iii)   sole power to dispose or to direct the disposition of 3,874,996 shares
 
  (iv)   shared power to dispose or to direct the disposition of -0- shares
B. Frederic Dorwart
Mr. Dorwart is co-trustee for GKFF and may be deemed to have beneficial ownership of GKFF holdings. Mr. Dorwart’s beneficial holdings are as follows:
  (a)   Amount Beneficially Owned: 3,874,996 shares
 
  (b)   Percent of Class: 7.6%

 

 


 

                     
CUSIP No.
 
966387102 
 
  (c)   Number of Shares as to which Such Person has:
  (i)   sole power to vote or to direct the vote 3,874,996 shares
 
  (ii)   shared power to vote or to direct the vote -0- shares
 
  (iii)   sole power to dispose or to direct the disposition of 3,874,996 shares
 
  (iv)   shared power to dispose or to direct the disposition of -0- shares
C. Mr.Frohlich is co-trustee for GKFF and may be deemed to have beneficial ownership of GKFF holdings. Mr. Frohlich’s beneficial holdings are as follows:
  (a)   Amount Beneficially Owned: 3,874,996 shares
 
  (b)   Percent of Class: 7.6%
 
  (c)   Number of Shares as to which Such Person has:
  (i)   sole power to vote or to direct the vote 3,874,996 shares
 
  (ii)   shared power to vote or to direct the vote -0- shares
 
  (iii)   sole power to dispose or to direct the disposition of 3,874,996 shares
 
  (iv)   shared power to dispose or to direct the disposition of -0- shares
D. Mr.Lakin is co-trustee for GKFF and may be deemed to have beneficial ownership of GKFF holdings. Mr. Lakin’s beneficial holdings are as follows:
  (a)   Amount Beneficially Owned: 3,874,996 shares
 
  (b)   Percent of Class: 7.6%
  (c)   Number of Shares as to which Such Person has:
  (i)   sole power to vote or to direct the vote 3,874,996 shares
 
  (ii)   shared power to vote or to direct the vote -0- shares
 
  (iii)   sole power to dispose or to direct the disposition of 3,874,996 shares
 
  (iv)   shared power to dispose or to direct the disposition of -0- shares
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.
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

 

 


 

                     
CUSIP No.
 
966387102 
 
      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 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.
SIGNATURES
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.
         
December 3, 2009   George Kaiser Family Foundation
 
 
  BY:   /s/ Frederic Dorwart    
    Frederic Dorwart, Co-Trustee   
     
  /s/ Frederic Dorwart    
  Frederic Dorwart   
     
  /s/ Philip Frohlich    
  Philip Frohlich   
     
  /s/ Philip Lakin, Jr.    
  Philip Lakin, Jr.   
     
 
EXHIBIT INDEX
Exhibit 1. Joint Filing Agreement dated December 3, 2009 by and between George Kaiser Family Foundation, Frederic Dorwart, Philip Frohlich, and Philip Lakin, Jr.