(4)

DISPOSITIONS

2012 Dispositions

In September 2012, we sold unproved properties in three counties in Pennsylvania for proceeds of $13.9 million resulting in a pre-tax gain of $746,000. As part of this agreement, we retained an overriding royalty of 1% to 5% on a large portion of the leases. In June 2012, we sold a suspended exploratory well in the Marcellus Shale for proceeds of $2.5 million resulting in a pre-tax loss of $2.5 million. In March 2012, we sold seventy-five percent of a prospect in East Texas which included unproved properties and a suspended exploratory well to a third party for $8.6 million resulting in a pre-tax loss of $10.9 million. As part of this agreement, we retained a carried interest on the first well drilled and an overriding royalty of 2.5% to 5.0% in the prospect.

On October 9, 2012, we signed a definitive agreement to sell certain of our oil and gas properties in southern Oklahoma which includes approximately 45 producing wells for a purchase price of $135.0 million, subject to normal post-closing adjustments. The completion of the sale is dependent on prospective buyer due diligence procedures and there can be no assurance the sale will be completed or that there will not be changes to the sales price. We currently expect the closing date to be on November 19, 2012.

2011 Dispositions

In third quarter 2011, we sold various producing properties in East Texas for proceeds of $10.5 million. We recognized an impairment charge of $31.2 million in third quarter 2011 related to these properties. For more information on this impairment charge, see Note 13. Also in third quarter 2011, we sold producing properties in Pennsylvania for proceeds of $5.4 million, with no gain or loss recognized, as the sale did not materially impact the depletion rate of the remaining properties in the amortization base.

In February 2011, we entered into an agreement to sell substantially all of our Barnett Shale properties located in North Central Texas (Dallas, Denton, Ellis, Hill, Hood, Johnson, Parker, Tarrant and Wise Counties), which was subject to normal post-closing adjustments. We closed substantially all of this sale in April 2011 and closed the remainder in August 2011. The gross cash proceeds were approximately $889.3 million, including certain derivative contracts assumed by the buyer. The agreements had a February 1, 2011 effective date and consequently operating net revenues after January 2011 were a downward adjustment to the sales price. As indicated in Notes 2 and 5, the historic results of our Barnett Shale operations are presented as discontinued operations. In first quarter 2011, we also sold a low pressure pipeline for $14.7 million in proceeds, with no gain or loss recognized.

Also as part of the sale of our Barnett Shale properties, certain derivative contracts were assumed by the buyer. This resulted in a loss of $1.7 million in second quarter 2011, which is included in continuing operations. The hedges assumed as part of the sale were not designated to our Barnett production.