X0303 4 2011-03-16 0001301063 Alpha Natural Resources, Inc. ANR 0001305735 Roberts James F ONE ALPHA PLACE P. O. BOX 2345 ABINGDON VA 24212 1 Common Stock 2011-03-16 4 M 0 38643 0 A 164453 D Common Stock 2011-03-16 4 M 0 119156 0 A 283609 D Common Stock 2011-03-16 4 S 0 11079 52.502 D 272530 D Common Stock 2011-03-16 4 S 0 76173 53.4539 D 196357 D Common Stock 2011-03-16 4 S 0 53591 54.2526 D 142766 D Common Stock 2011-03-16 4 S 0 41956 55.0025 D 100810 D Non-qualified Stock Options (Right to Buy) 4.50 2011-03-16 4 M 0 38643 0 D 2014-08-10 Common Stock 38643 0 D Non-qualified Stock Options (Right to Buy) 7.87 2011-03-16 4 M 0 119156 0 D 2014-08-10 Common Stock 119156 30000 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 14, 2011. Represents the weighted average sales price for all sales reported in the transaction by reporting person. The actual range of prices for the reported sales in the transaction is $51.88 to $52.88. Upon request, reporting person will provide to the SEC's staff, the Issuer or its shareowners, full information regarding the number of shares sold at each separate price. Represents the weighted average sales price for all sales reported in the transaction by reporting person. The actual range of prices for the reported sales in the transaction is $52.89 to $53.89. Upon request, reporting person will provide to the SEC's staff, the Issuer or its shareowners, full information regarding the number of shares sold at each separate price. Represents the weighted average sales price for all sales reported in the transaction by reporting person. The actual range of prices for the reported sales in the transaction is $53.90 to $54.90. Upon request, reporting person will provide to the SEC's staff, the Issuer or its shareowners, full information regarding the number of shares sold at each separate price. Represents the weighted average sales price for all sales reported in the transaction by reporting person. The actual range of prices for the reported sales in the transaction is $54.91 to $55.09. Upon request, reporting person will provide to the SEC's staff, the Issuer or its shareowners, full information regarding the number of shares sold at each separate price. The 300,842 shares of common stock originally subject to this option were set to vest in five equal installments beginning on December 31, 2004. Pursuant to the Agreement and Plan of Merger between Alpha Natural Resources, Inc. and Foundation Coal Holdings, Inc. dated May 11, 2009 (renamed Alpha Natural Resources, Inc.), the Compensation Committee approved the accelerated vesting of 88,643 options with a conversion price of $4.50. The 782,189 shares of common stock originally subject to this option were set to vest on August 10, 2012. Upon the achievement of certain annual performance targets, the options were subject to partial accelerated vesting. The Compensation Committee approved the vesting of 10 percent of the options effective December 31, 2004, 30 percent effective December 31, 2005, 15 percent effective December 31, 2006, 20 percent effective December 31, 2007, 5 percent effective February 11, 2008, 15 percent effective February 20, 2009, and 5 percent effective July 31, 2009. /s/ Edythe C. Katz, Attorney-in-Fact 2011-03-18