SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

LANE RICHARD F

(Last)

(First)

(Middle)

2350 N. SAM HOUSTON PARKWAY EAST

SUITE 300

(Street)

HOUSTON

77032

(City)

(State)

(Zip)

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)
	Executive Vice President

3. Date of Earliest Transaction (Month/Day/Year)
12/08/2005

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/08/2005		A		6,670	A	$0⁽¹⁾	365,950⁽²⁾	D
Common Stock								11,827.6324⁽³⁾	I	By Nonqualified Retirement Plan

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 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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Options (Right to buy)	$1.5							02/16/2000	02/16/2009	Common Stock	72,000		72,000⁽⁴⁾	D
Stock Options (Right to buy)	$1.8282							09/11/1999	09/11/2008	Common Stock	40,000		40,000⁽⁵⁾	D
Stock Options (Right to buy)	$1.8594							12/14/2001	12/14/2010	Common Stock	200,000		200,000⁽⁶⁾	D
Stock Options (Right to buy)	$2.41							12/20/2002	12/20/2011	Common Stock	75,000		75,000⁽⁷⁾	D
Stock Options (Right to buy)	$2.8125							02/09/1999	02/09/2008	Common Stock	43,800		43,800⁽⁸⁾	D
Stock Options (Right to buy)	$2.865							12/11/2003	12/11/2012	Common Stock	200,000		200,000⁽⁹⁾	D
Stock Options (Right to buy)	$5.285							12/10/2004	12/10/2013	Common Stock	127,280		127,280⁽¹⁰⁾	D
Stock Options (Right to buy)	$12.45							12/09/2005	12/09/2011	Common Stock	59,360		59,360⁽¹¹⁾	D
Stock Options (Right to buy)	$35.49	12/08/2005		A		23,710		12/08/2006⁽¹²⁾	12/08/2012	Common Stock	23,710	⁽¹⁾	23,710	D

Explanation of Responses:

1. Restricted stock and options granted in consideration of services of an officer.

2. On November 3, 2005, the common stock of Southwestern Energy Company split 2-for-1 resulting in the reporting person's acquisition of 179,640 additional shares of common stock.

3. On November 3, 2005, the common stock of Southwestern Energy Company split 2-for-1, resulting in the reporting person's acquisition of 5,913.8162 additional shares of common stock indirectly owned by the reporting person through the Company's Nonqualified Retirement Plan.

4. This option was previously reported as covering 18,000 shares at an exercise price of $6.00 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.

5. This option was previously reported as covering 10,000 shares at an exercise price of $7.3125, 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. This option was previously reported as covering 50,000 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.

7. This option was previously reported as covering 18,750 shares at an exercise price of $9.64 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.

8. This option was previously reported as covering 21,900 shares at an exercise price of $5.625 per share, and has been adjusted as a result of a 2-for-1 stock split on November 3, 2005.

9. This option was previously reported as covering 50,000 shares at an exercise price of $11.46, 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.

10. 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.

11. This option was previously reported as covering 14,840 shares at an exercise price of $49.80, 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.

12. 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.

	Melissa D. McCarty, Attorney-in-Fact	12/12/2005
	** 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).
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