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 *
GREGORY LOUIS P
  2. Issuer Name and Ticker or Trading Symbol
ATMOS ENERGY CORP [ATO]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr VP and General Counsel
(Last)
(First)
(Middle)
5430 LBJ FREEWAY, 1800 III LINCOLN CENTRE
3. Date of Earliest Transaction (Month/Day/Year)
02/15/2005
(Street)

DALLAS, TX 75240
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 02/14/2005   M   20,000 A $ 19.66 41,959 D  
Common Stock 02/14/2005   M   7,665 A $ 21.58 49,624 D  
Common Stock 02/14/2005   M   6,134 A $ 21.23 55,758 D  
Common Stock 02/14/2005   S   20,000 D $ 28.8196 35,758 D  
Common Stock 02/14/2005   S   13,799 D $ 28.8112 21,959 D  
Common Stock               2,356.24 (1) I ESOP Trust

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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
Employee Stock Option (right to buy) $ 19.66 02/14/2005   M     20,000   (2) 09/04/2010 Common Stock 20,000 $ 0 0 D  
Employee Stock Option (right to buy) $ 21.58 02/14/2005   M     7,665   (3) 11/11/2012 Common Stock 7,665 $ 0 3,832 D  
Employee Stock Option (right to buy) $ 21.23 02/14/2005   M     6,134   (4) 03/10/2013 Common Stock 6,134 $ 0 12,266 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
GREGORY LOUIS P
5430 LBJ FREEWAY
1800 III LINCOLN CENTRE
DALLAS, TX 75240
      Sr VP and General Counsel  

Signatures

 Dwala Kuhn by POA   02/15/2005
**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) To update end of period holdings as of 1/31/05 under the Atmos Energy Corporation Retirement Savings Plan and Trust (formerly kno wn as the Atmos Energy Corporation Employee Stock Ownership Plan and Trust.)
(2) The options vest in three equal annual installments beginning on September 5, 2001.
(3) The options vest in three equal annual installments beginning on November 12, 2003.
(4) The options vest in three equal annual installments beginning on March 11, 2004.

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