FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Mancini Lisa A.   2. Issuer Name and Ticker or Trading Symbol CSX CORP [CSX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) SVP - Chief Administrative Off (Last) (First) (Middle) 500 WATER STREET 3. Date of Earliest Transaction (Month/Day/Year) 05/06/2013 (Street) JACKSONVILLE, FL 32202 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/06/2013   F   2,656 (1) D $ 25.23 123,432 D   Common Stock (2) 05/07/2013   A   12,810 A (3) 136,242 D   Common Stock               63,537 I Executive Deferred Compensation Plan (4) Common Stock               7,790 I CSX Corporation 401(k) Plan (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Mancini Lisa A. 500 WATER STREET JACKSONVILLE, FL 32202			SVP - Chief Administrative Off

Signatures

By: Mark D. Austin, Attorney-in-Fact		05/08/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Withholding of stock to satisfy tax withholding obligation.
(2)	Restricted stock units awarded pursuant to the shareholder approved 2010 CSX Stock and Incentive Award Plan. Each unit represents a contingent right to receive one share of common stock. The units vest on May 6, 2016.
(3)	In determining the number of units to be granted under the 2010 CSX Stock and Incentive Plan, the value of the award for the Reporting Person is divided by the average of CSX's stock price for the full three-month period preceding the date of grant.
(4)	By Trustee, CSX Corporation Executive Deferred Compensation Plan.
(5)	By Trustee, CSX Tax Savings Thrift Plan. The number reflects equivalent shares of cash value held in CSX Stock Fund, which amounts will fluctuate dependent upon daily net asset value of the fund.

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