X0202 4 2005-12-08 0000007332 SOUTHWESTERN ENERGY CO SWN 0001103820 LANE RICHARD F 2350 N. SAM HOUSTON PARKWAY EAST SUITE 300 HOUSTON TX 77032 0 1 0 0 Executive Vice President Common Stock 2005-12-08 4 A 0 6670 0 A 365950 D Common Stock 11827.6324 I By Nonqualified Retirement Plan Stock Options (Right to buy) 1.5 2000-02-16 2009-02-16 Common Stock 72000 72000 D Stock Options (Right to buy) 1.8282 1999-09-11 2008-09-11 Common Stock 40000 40000 D Stock Options (Right to buy) 1.8594 2001-12-14 2010-12-14 Common Stock 200000 200000 D Stock Options (Right to buy) 2.41 2002-12-20 2011-12-20 Common Stock 75000 75000 D Stock Options (Right to buy) 2.8125 1999-02-09 2008-02-09 Common Stock 43800 43800 D Stock Options (Right to buy) 2.865 2003-12-11 2012-12-11 Common Stock 200000 200000 D Stock Options (Right to buy) 5.285 2004-12-10 2013-12-10 Common Stock 127280 127280 D Stock Options (Right to buy) 12.45 2005-12-09 2011-12-09 Common Stock 59360 59360 D Stock Options (Right to buy) 35.49 2005-12-08 4 A 0 23710 A 2006-12-08 2012-12-08 Common Stock 23710 23710 D 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. 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. 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. 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. 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. 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. 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. Restricted stock and options granted in consideration of services of an officer. 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. 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. 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. 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. Melissa D. McCarty, Attorney-in-Fact 2005-12-12