GATX CORP (NYSE: GATX) insider to sell 1,000 shares

Rhea-AI Filing Summary

GATX CORP (GATX) received a Form 144 notice from insider Eren Doygun covering a proposed sale of common stock. The filing indicates an intended sale of 1,000 shares of GATX common stock on or about 08/26/2026, with the shares to be acquired through the exercise of options under a registered plan and sold for cash through Morgan Stanley Smith Barney LLC on the NYSE.

Key Figures

Shares of common stock to be sold: 1,000 shares Aggregate market value of securities: $179,518.60 Proposed sale date: 08/26/2026

3 metrics

Shares of common stock to be sold 1,000 shares Proposed sale by Eren Doygun reported on Form 144

Aggregate market value of securities $179,518.60 Value listed for 1,000 GATX common shares

Proposed sale date 08/26/2026 Date shown in securities information and securities-to-be-sold sections

Key Terms

Form 144, Rule 144, Exercise of Options Under a Registered Plan, common stock

4 terms

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Exercise of Options Under a Registered Plan financial

"Exercise of Options Under a Registered Plan | Issuer"

common stock financial

"144: Securities Information Common | Morgan Stanley Smith Barney LLC"

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

What does the Form 144 filing for GATX signify?

The Form 144 filing notifies of a proposed sale of 1,000 shares of GATX CORP common stock by insider Eren Doygun. The shares are to be obtained via exercise of options under a registered plan and sold for cash through a broker.

How many GATX (GATX) shares are covered by this Form 144?

The notice covers a proposed sale of 1,000 shares of GATX CORP common stock. This amount is reported in the securities information section of the filing.

What is the reported market value of the GATX shares in this Form 144?

The filing lists an aggregate market value of $179,518.60 for the 1,000 shares of GATX CORP common stock to be sold, based on the price information provided in the securities information section.

When is the proposed sale date for the GATX (GATX) shares?

The proposed sale date for the GATX CORP common shares is 08/26/2026, as stated in both the securities information and securities-to-be-sold sections of the Form 144 notice.

How will the GATX shares be acquired before sale in this Form 144?

The shares will be acquired through the exercise of options under a registered plan and then sold for cash, according to the securities-to-be-sold section of the Form 144.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/26/2026 - 04:20 PM Accepted by SEC EDGAR 08/26/2026 - 04:19 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002147835
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	GATX CORPORATION
SEC File Number	001-02328
Address of Issuer	233 South Wacker Drive Chicago ILLINOIS 60606-7147
Phone	(312) 621-6200
Name of Person for Whose Account the Securities are To Be Sold	EREN DOYGUN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1000	179518.60	35300000	08/26/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/26/2026	Exercise of Options Under a Registered Plan	Issuer			1000	08/26/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/26/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Eren Doygun
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)