[Form 4] GATX CORP Insider Trading Activity

Rhea-AI Filing Summary

GATX (GATX): Director transaction reported. Director Diane M. Aigotti acquired 66 shares of phantom stock/RSUs on 11/03/2025, credited under GATX’s Directors’ Phantom Stock Plan and Directors’ Voluntary Deferred Fee Plan via their dividend reinvestment feature at a reported price of $157.515. Following this, she beneficially owns 18,963 shares (direct).

Each phantom stock/RSU represents the right to receive one share of GATX common stock upon settlement, which is generally payable in common stock on a deferred basis at the reporting person’s election upon termination of service on the board.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Aigotti Diane

(Last) (First) (Middle)

C/O 233 S. WACKER DR.

(Street)

CHICAGO IL 60606

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
GATX CORP [ GATX ]

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

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/03/2025

4. 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 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(1)	11/03/2025		A		66(2)	A	$157.515	18,963	D

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 Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Represents additional shares of phantom stock/RSUs credited to the reporting person's account under the Amended and Restated GATX Directors' Phantom Stock Plan ("Phantom Stock Plan") and the Amended and Restated GATX Corporation Directors' Voluntary Deferred Fee Plan ("Deferred Fee Plan") credited on the transaction date. Each share of phantom stock/RSU represents the right to receive one share of Issuer's common stock upon settlement. The shares of phantom stock/RSUs are generally payable on a deferred basis in common stock at the election of the reporting person upon the reporting person's termination of service on the Issuer's board of directors.

2. Represents 66 shares of phantom stock/RSUs acquired pursuant to the dividend reinvestment feature of the Phantom Stock Plan and the Deferred Fee Plan.

Remarks:

	Lisa M. Ibarra, by Power of Attorney on behalf of Diane M. Aigotti	11/04/2025
	** 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 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).
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 GATX (GATX) disclose in this Form 4?

A director acquired 66 phantom stock/RSUs on 11/03/2025 via the plans’ dividend reinvestment feature at $157.515.

How many securities does the reporting person now beneficially own for GATX?

The filing shows 18,963 shares beneficially owned following the reported transaction.

What are the terms of the phantom stock/RSUs for GATX’s director?

Each unit represents the right to receive one share of common stock upon settlement, generally payable on a deferred basis at board service termination.

Under which GATX plans were the RSUs credited?

The units were credited under the Directors’ Phantom Stock Plan and the Directors’ Voluntary Deferred Fee Plan.

How were the 66 phantom stock/RSUs acquired?

They were acquired through the plans’ dividend reinvestment feature.

What transaction price was reported for the acquisition?

The table lists a price of $157.515 for the credited shares.