[Form 3] CSX CORP Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

CSX (CSX) insider filing: The SVP & Chief Commercial Officer reported initial beneficial ownership. Direct common stock holdings total 5,794 shares, which include RSUs scheduled to vest beginning on February 14–16, 2026. Indirect holdings include 3,360 shares through the CSX Corporation 401(k) Plan and 4,154 shares held via a Joint Revocable Trust.

Stock options reported include, among others, 22,569 shares at an exercise price of $26.5 expiring on 02/18/2030 and 38,130 shares at $31.24 expiring on 06/02/2032. The event date is 10/29/2025; a Power of Attorney is on file.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Kenney Maryclare T.

(Last) (First) (Middle)

500 WATER STREET

(Street)

JACKSONVILLE FL 32202

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/29/2025

3. Issuer Name and Ticker or Trading Symbol
CSX CORP [ CSX ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & Chief Commercial Officer

5. If Amendment, Date of 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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	5,794(1)	D
Common Stock	3,360	I	CSX Corporation 401(k) Plan(2)
Common Stock	4,154	I	Joint Revocable Trust

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Option	(3)	02/06/2029	Common Stock	10,722(4)	$22.7	D
Option	(5)	02/18/2030	Common Stock	22,569(6)	$26.5	D
Option	(7)	02/09/2031	Common Stock	7,080(8)	$29.49	D
Option	(9)	02/16/2032	Common Stock	5,784(10)	$35.17	D
Option	(11)	02/15/2033	Common Stock	6,089(12)	$31.67	D
Option	(13)	02/16/2034	Common Stock	4,315(14)	$36.72	D
Option	(15)	02/14/2035	Common Stock	5,355(16)	$33.37	D
Option	06/02/2028	06/02/2032	Common Stock	38,130(17)	$31.24	D

Explanation of Responses:

1. Includes 631 restricted stock units ("RSUs") that vest on February 15, 2026; 906 RSUs that vest in two equal installments on February 16, 2026 and February 16, 2027; and 1,631 RSUs that vest in three equal annual installments beginning on February 14, 2026.

2. By Trustee, CSX Corporation Savings Thrift Plan. The number reflects equivalent shares of case value held in the CSX Stock Fund, which amounts will fluctuate dependent upon the daily net asset value of the fund.

3. The options vest in three substantially equal installments on February 6, 2020, February 6, 2021 and February 6, 2022.

4. Options awarded pursuant to the CSX Corporation 2019 - 2021 Long-Term Incentive Plan.

5. The options vest in three substantially equal installments on February 18, 2021, February 18, 2022 and February 18, 2023.

6. Options awarded pursuant to the CSX Corporation 2020 - 2022 Long-Term Incentive Plan.

7. The options vest in three substantially equal installments on February 9, 2022, February 9, 2023 and February 9, 2024.

8. Options awarded pursuant to the CSX Corporation 2021 - 2023 Long-Term Incentive Plan.

9. The options vest in three substantially equal installments on February 16, 2023, February 16, 2024 and February 16, 2025.

10. Options awarded pursuant to the CSX Corporation 2022 - 2024 Long-Term Incentive Plan.

11. The options vest in three substantially equal installments on February 15, 2024, February 15, 2025 and February 15, 2026.

12. Options awarded pursuant to the CSX Corporation 2023 - 2025 Long-Term Incentive Plan.

13. The options vest in three substantially equal installments on February 16, 2025, February 16, 2026 and February 16, 2027.

14. Options awarded pursuant to the CSX Corporation 2024 - 2026 Long-Term Incentive Plan.

15. The options vest in three substantially equal installments on February 14, 2026, February 14, 2027 and February 14, 2028.

16. Options awarded pursuant to the CSX Corporation 2025 - 2027 Long-Term Incentive Plan.

17. Long-term incentive award.

Remarks:

Exhibit 24 - Power of Attorney Attached

	/s/ Tammy D. Butler, Attorney-in-Fact	11/07/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did CSX (CSX) disclose in this insider ownership filing?

The SVP & Chief Commercial Officer reported initial beneficial ownership of common stock, RSUs, and multiple stock option grants.

How many CSX common shares are held directly?

Direct holdings are 5,794 shares, including RSUs that start vesting on February 14–16, 2026.

What indirect CSX share holdings are reported?

3,360 shares via the CSX Corporation 401(k) Plan and 4,154 shares via a Joint Revocable Trust.

Which CSX stock options are notable in this filing?

Examples include 22,569 shares at $26.5 expiring 02/18/2030 and 38,130 shares at $31.24 expiring 06/02/2032.

When is the reported event date for the ownership statement?

The event date is 10/29/2025.

Who signed the filing and under what authority?

It was signed by /s/ Tammy D. Butler as Attorney-in-Fact; a Power of Attorney is attached.