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
                                                                                  
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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(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Ciotti George W 		2. Issuer Name and Ticker or Trading Symbol

BERRY PETROLEUM CO [ BRY ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
VP of Corp Development
(Last)          (First)          (Middle)

1999 BROADWAY, SUITE 3700 		3. Date of Earliest Transaction (MM/DD/YYYY)

12/3/2010
(Street)

DENVER, CO 80202
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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
Class A Common Stock   12/3/2010     M    2429   (5) A $40.045   3572   D    
Class A Common Stock   12/3/2010     J    793   (6) A $0   1593   I   Held in 401(k) account  
Class A Common Stock   12/3/2010     S    764   (8) D $40.045   2808   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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
2008 Restricted Stock Units   (1) $0                    12/11/2009   (2) 12/11/2018   Class A Common Stock   4875     4875   D    
2009 Restricted Stock Units   (3) $0                    12/11/2010   (4) 12/11/2019   Class A Common Stock   7465     7465   D    
Perf Based RSUs 3-16-10   $0                    12/31/2012   12/31/2012   Class A Common Stock   5633     5633   D    
12-3-2007 RSU   $0   12/3/2010     M         2429   (7)   12/3/2010   12/3/2017   Class A Common Stock   2429   $40.045   0   D    

Explanation of Responses:
( 1)  1 for 1
( 2)  Restricted Stock Units vest 25% per year from date of grant.
( 3)  1 for 1
( 4)  Restricted Stock Units vest 25% per year from date of grant.
( 5)  Vested shares issued pursuant to Rule 16b-3 plan.
( 6)  Shares of Common Stock acquired by the reporting person in the Company's 401(k) Plan. All transactions were at market and were non-discretionary.
( 7)  Vested shares issued pursuant to Rule 16b-3 plan.
( 8)  Shares sold to cover taxes on RSU vesting under Rule 16b-3 Plan.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Ciotti George W
1999 BROADWAY, SUITE 3700
DENVER, CO 80202

VP of Corp Development

Signatures
Kenneth A. Olson Under POA for George W. Ciotti 12/7/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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