X0303 4 2010-10-13 0 0000277948 CSX CORP CSX 0001237371 MUNOZ OSCAR CSX CORPORATION 500 WATER STREET, 15TH FLOOR JACKSONVILLE FL 32202 0 1 0 0 Executive Vice President & CFO Common Stock 2010-10-13 4 S 0 25000 60.0198 D 238862 D The transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on April 16, 2010. The plan has been approved pursuant to the terms of the Issuer's policies and is part of the Reporting Person's strategy to diversify assets. /s/ Mark D. Austin 2010-10-14