Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
PETERSEN DALE E
   2. Issuer Name and Ticker or Trading Symbol
BANCFIRST CORP /OK/ [BANF] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP
(Last)
(First)
(Middle)
101 N. BROADWAY		 3. Date of Earliest Transaction (Month/Day/Year)
12/05/2006
(Street)

OKLAHOMA CITY, OK 73102		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 12/05/2006   M   250 A $ 16.844 250 D  
Common Stock 12/05/2006   S   250 D $ 54.3 0 D  
Common Stock 12/05/2006   M   97 A $ 16.844 97 D  
Common Stock 12/05/2006   S   97 D $ 54.31 0 D  
Common Stock 12/05/2006   M   100 A $ 16.844 100 D  
Common Stock 12/05/2006   S   100 D $ 54.29 0 D  
Common Stock 12/05/2006   M   100 A $ 16.844 100 D  
Common Stock 12/05/2006   S   100 D $ 54.28 0 D  
Common Stock 12/05/2006   M   100 A $ 16.844 100 D  
Common Stock 12/05/2006   S   100 D $ 54.27 0 D  
Common Stock 12/05/2006   M   15 A $ 16.844 15 D  
Common Stock 12/05/2006   S   15 D $ 54.23 0 D  
Common Stock 12/05/2006   M   99 A $ 16.844 99 D  
Common Stock 12/05/2006   S   99 D $ 54.21 0 D  
Common Stock 12/05/2006   M   257 A $ 16.844 257 D  
Common Stock 12/05/2006   S   257 D $ 54.19 0 D  
Common Stock 12/05/2006   M   100 A $ 16.844 100 D  
Common Stock 12/05/2006   S   100 D $ 54.18 0 D  
Common Stock 12/05/2006   M   199 A $ 16.844 199 D  
Common Stock 12/05/2006   S   199 D $ 54.05 0 D  
Common Stock 12/05/2006   M   99 A $ 16.844 99 D  
Common Stock 12/05/2006   S   99 D $ 54.04 0 D  
Common Stock 12/05/2006   M   300 A $ 16.844 300 D  
Common Stock 12/05/2006   S   300 D $ 54.02 0 D  
Common Stock 12/05/2006   M   398 A $ 16.844 398 D  
Common Stock 12/05/2006   S   398 D $ 54.01 0 D  
Common Stock 12/05/2006   M   386 A $ 16.844 386 D  
Common Stock 12/05/2006   S   386 D $ 54 0 D  
Common Stock 12/05/2006   M   1,250 A $ 20 1,250 D  
Common Stock 12/05/2006   S   1,250 D $ 54 0 D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     250 10/22/2002 10/22/2013 Common Stock 250 $ 0 2,250 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     97 10/22/2002 10/22/2013 Common Stock 97 $ 0 2,153 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     100 10/22/2002 10/22/2013 Common Stock 100 $ 0 2,053 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     100 10/22/2002 10/22/2013 Common Stock 100 $ 0 1,953 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     100 10/22/2002 10/22/2013 Common Stock 100 $ 0 1,853 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     15 10/22/2002 10/22/2013 Common Stock 15 $ 0 1,838 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     99 10/22/2002 10/22/2006 Common Stock 99 $ 0 1,739 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     257 10/22/2002 10/22/2013 Common Stock 257 $ 0 1,482 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     100 10/22/2002 10/22/2013 Common Stock 100 $ 0 1,382 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     199 10/22/2002 10/22/2013 Common Stock 199 $ 0 1,183 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     99 10/22/2002 10/22/2013 Common Stock 99 $ 0 1,084 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     300 10/22/2002 10/22/2013 Common Stock 300 $ 0 784 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     398 10/22/2002 10/22/2013 Common Stock 398 $ 0 386 D  
Non-Qualified Stock Option (right to buy) $ 16.844 12/05/2006   M     386 10/22/2002 10/22/2013 Common Stock 386 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 20 12/05/2006   M     1,250 04/05/2002 04/05/2013 Common Stock 1,250 $ 0 3,750 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
PETERSEN DALE E
101 N. BROADWAY
OKLAHOMA CITY, OK 73102		       EVP  

Signatures

 By: Randy Foraker For: Dale E. Petersen   12/07/2006
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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