X0303 4 2008-11-24 0000007332 SOUTHWESTERN ENERGY CO SWN 0001103813 KERLEY GREGORY D SUITE 125 2350 N. SAM HOUSTON PARKWAY EAST HOUSTON TX 77032 1 Executive Vice President & CFO Common Stock 2008-11-24 4 S 0 177300 29.971 D 1237606 D Common Stock 2008-11-24 4 S 0 22700 30.6147 D 1214906 D Common Stock 2008-11-24 4 J 0 39.4454 36.036 A 24994.2788 I By 401(k) Plan This transaction was executed in multiple trades at prices ranging from $29.50 to $30.49. The price reported above in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon written request, to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transactions were effected. This transaction was executed in multiple trades at prices ranging from $30.50 to $30.76. The price reported above in Column 4 reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon written request, to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and prices at which the transactions were effected. Purchased through the Company's 401(k) plan from July 11, 2008, thru November 14, 2008. The information in this report is based on a plan statement dated November 14, 2008. /s/ Melissa D. McCarty, Attorney-in-fact for Gregory D. Kerley 2008-11-25