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 *
KERLEY GREGORY D
   2. Issuer Name and Ticker or Trading Symbol
SOUTHWESTERN ENERGY CO [SWN] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Exec. VP & CFO
(Last)
(First)
(Middle)
2350 N. SAM HOUSTON PARKWAY EAST, SUITE 300		 3. Date of Earliest Transaction (Month/Day/Year)
12/08/2005
(Street)

HOUSTON, TX 77032		 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 11/03/2005   A V(1) 30 A $ 0 (1) 926,994 (2) D  
Common Stock 12/08/2005   A   6,670 A $ 0 (3) 933,664 (2) D  
Common Stock 12/12/2005   M   34,904 A $ 2.865 968,568 (2) D  
Common Stock 12/08/2005   J(4)   180.2469 A $ 29.4243 11,659.3877 (5) I By 401(k) plan
Common Stock               25,794.8632 (6) I By Nonqualified Retirement Plan

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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
Stock Options (Right to buy) $ 1.5             12/16/2000 12/16/2009 Common Stock 72,996   72,996 (7) D  
Stock Options (Right to buy) $ 1.8594             12/14/2001 12/14/2010 Common Stock 399,996   399,996 (8) D  
Stock Options (Right to buy) $ 5.285             12/10/2004 12/10/2013 Common Stock 127,280   127,280 (9) D  
Stock Options (Right to buy) $ 12.45             12/09/2005 12/09/2011 Common Stock 59,360   59,360 (10) D  
Stock Options (Right to buy) $ 35.49 12/08/2005   A   23,710   12/08/2006(11) 12/08/2012 Common Stock 23,710 (3) 23,710 D  
Stock Options (Right to buy) $ 2.865 12/12/2005   M     34,904 12/11/2003 12/11/2012 Common Stock 34,904 $ 2.865 76,040 (12) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
KERLEY GREGORY D
2350 N. SAM HOUSTON PARKWAY EAST
SUITE 300
HOUSTON, TX 77032		       Exec. VP & CFO  

Signatures

 Melissa D. McCarty, Attorney-in-Fact   12/12/2005
**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).
(7) This option was previously reported as covering 36,498 shares at an exercise price of $3.00 per share, and has been adjusted as a result of a 2-for-1 stock split on November 3, 2005.
(4) Purchased through the Company's 401(k) plan from June 27, 2005, through November 29, 2005.
(1) Employee service award granted for 15 years of service with the Company.
(2) On November 3, 2005, the common stock of Southwestern Energy Company split 2-for-1, resulting in the reporting person's acquisition of 463,482 additional shares of common stock.
(12) This option was previously reported as covering 55,472 shares at an exercise price of $5.73 per share, and has been adjusted as a result of a 2-for-1 stock split on November 3, 2005.
(11) Option becomes exercisable in three equal annual installments beginning on the first anniversary of the grant date specified in Column 3 or immediately upon a change in control.
(9) This option was previously reported as covering 31,820 shares at an exercise price of $21.14 per share, and has been adjusted as a result of a 2-for-1 stock split on May 20, 2005, and a 2-for-1 stock split on November 3, 2005.
(6) On November 3, 2005, the common stock of Southwestern Energy Company split 2-for-1, resulting in the reporting person's acquisition of 12,897.4316 additional shares of common stock indirectly owned by the reporting person through the Company's Nonqualified Retirement Plan.
(5) On November 3, 2005, the common stock of Southwestern Energy Company split 2-for-1, resulting in the reporting person's acquisition of 5,739.5704 additional shares of common stock indirectly owned by the reporting person through the Company's 401(k) plan.
(10) This option was previously reported as covering 14,840 shares at an exercise price of $49.80 per share, and has been adjusted as a result of a 2-for-1 stock split on May 20, 2005, and a 2-for-1 stock slit on November 3, 2005.
(8) This option was previously reported as covering 99,999 shares at an exercise price of $7.4375 per share, and has been adjusted as a result of a 2-for-1 stock split on May 20, 2005, and a 2-for-1 stock split on November 3, 2005.
(3) Restricted stock and options granted in consideration of services as an officer.

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