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 *
Morris William M
   2. Issuer Name and Ticker or Trading Symbol
LEGACY RESERVES LP [LGCY] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP, CAO and Controller
(Last)
(First)
(Middle)
303 W. WALL STREET, SUITE 1400		 3. Date of Earliest Transaction (Month/Day/Year)
02/18/2011
(Street)

MIDLAND, TX 79701		 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
Units representing limited partner interests 02/18/2011   M   3,795 A $ 0 (1) 8,872 D  
Units representing limited partner interests 02/18/2011   D   3,795 D $ 30.4 (2) 5,077 D  

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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
Phantom Units (1) 02/18/2011   M     3,795   (3)(5)   (3)(5) Units 3,795 $ 0 (1) 9,549 D  
Phantom Units (1) 02/18/2011   A   3,089     (3) 02/18/2014 Units 3,089 $ 0 (1) 12,638 D  
Phantom Units (1) 02/18/2011   A   5,037     (3)(4) 02/18/2014 Units 5,037 $ 0 (1) 17,675 (6) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Morris William M
303 W. WALL STREET, SUITE 1400
MIDLAND, TX 79701		       VP, CAO and Controller  

Signatures

 /s/ William M. Morris   02/22/2011
**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).
(1) Each phantom unit represents the economic equivalent of a unit representing a limited partner interest in Legacy Reserves LP.
(2) Reflects the closing price of the units on February 18, 2011.
(3) Phantom units vest annually in one-third increments beginning on the first anniversary of their respective grant dates and are payable in cash or, at the discretion of the compensation committee of the board of directors of the general partner of the Issuer, in units.
(4) The number of phantom units that vest each year for the three-year vesting period is subject to the achievement of certain objective, performance-based criteria during the fiscal year prior to the applicable vesting date. If none or only a portion of phantom units of a particular tranche vest as a result of target performance levels not being met, such number of phantom units that fail to vest will be forfeited.
(5) Pursuant to the achievement of certain objective, performance-based criteria, 2,333 phantom units, 100% of the phantom units eligible to vest for the year ended December 31, 2010, granted on February 18, 2010, vested.
(6) Includes the remaining 1,960 phantom units and 7,589 phantom units, subject to vesting, granted on January 29, 2009 and February 18, 2010, respectively.
 
Remarks:
Vice President, Chief Accounting Officer and Controller of Legacy Reserves GP, LLC, the general partner of Legacy Reserves LP.

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