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 *
LANE RICHARD F
   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)
Pres. E&P and EVP SWN
(Last)
(First)
(Middle)
SUITE 125, 2350 N. SAM HOUSTON PARKWAY EAST		 3. Date of Earliest Transaction (Month/Day/Year)
09/03/2008
(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 09/03/2008   D   18,340 (1) D $ 0 530,426 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 Stock (2)               (3)   (3) Common Stock 23,655.2648   23,655.2648 (4) D  
Stock Options (Right to Buy) $ 1.435 (4)             12/11/2003 12/11/2012(5) Common Stock 97,556   97,556 (4) D  
Stock Options (Right to Buy) $ 1.205 (4)             12/20/2002 12/20/2011(5) Common Stock 50,000   50,000 (4) D  
Stock Options (Right to Buy) $ 20.335 (4)             12/11/2007 12/11/2013(5) Common Stock 29,133   29,133 (4) (6) D  
Stock Options (Right to Buy) $ 2.645             12/10/2004 12/10/2013(5) Common Stock 105,122   105,122 D  
Stock Options (Right to Buy) $ 27.18 (4)             12/13/2008 12/13/2014(5) Common Stock 14,626   14,626 (4) (7) D  
Stock Options (Right to Buy) $ 6.225 (4)             12/09/2005 12/09/2011(5) Common Stock 98,936   98,936 (4) D  
Stock Options (Right to Buy) $ 0.93             12/14/2001 12/14/2010(5) Common Stock 53,512   53,512 D  
Stock Options (Right to Buy) $ 17.745 (4)             12/08/2006 12/08/2012(5) Common Stock 47,420   47,420 (4) (8) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
LANE RICHARD F
SUITE 125
2350 N. SAM HOUSTON PARKWAY EAST
HOUSTON, TX 77032		       Pres. E&P and EVP SWN  

Signatures

 /s/ Melissa D. McCarty, Attorney-in-Fact for Richard F. Lane   09/04/2008
**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) As a result of Mr. Lane's resignation from the Company on September 3, 2008, he voluntarily forfeited 18,340 shares of restricted stock that were granted to him under the Company's 2004 Stock Incentive Plan, and would not vest until after December 31, 2008. All outstanding restricted stock vesting prior to December 31, 2008, was accelerated on the date of resignation.
(2) Each share of phantom stock represents the right to receive the economic equivalent of one share of Southwestern Energy Company common stock.
(3) Shares of phantom stock are payable in cash following termination of the reporting person's employment with Southwestern Energy Company. The reporting person may transfer his phantom stock account into an alternative investment account at any time.
(4) Adjustments have been made to the exercise price and derivative securities beneficially owned to reflect the two-for-one stock split on March 25, 2008.
(5) As a result of Mr. Lane's resignation on September 3, 2008, all outstanding stock options will expire on September 3, 2010.
(6) As a result of Mr. Lane's resignation on September 3, 2008, 14,567 stock options vesting prior to December 31, 2008, have been accelerated, and 14,567 unvested stock options have been voluntarily forfeited.
(7) As a result of Mr. Lane's resignation on September 3, 2008, 14,626 stock options vesting prior to December 31, 2008, have been accelerated, and 29,254 unvested stock options have been voluntarily forfeited.
(8) As a result of Mr. Lane's resignation on September 3, 2008, 15,806 unvested options relating to the incentive stock award on December 8, 2005, were accelerated.

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