GATX officer plans $444K stock sale in 2026

An officer of GATX CORP filed a Rule 144 notice to sell 2,500 common shares after exercising stock options for cash.

Rhea-AI Filing Summary

GATX CORP (GATX) received a notice that company officer Geoffrey D. Phillips intends to sell securities of GATX under Rule 144. The planned transaction involves the sale of 2,500 shares of common stock, expected on September 11, 2026, following an exercise of options under a registered plan for cash, with sales to be executed through Morgan Stanley Smith Barney LLC on the NYSE.

Key Figures

Shares to be sold: 2,500 shares Aggregate market value: $443,991.75 Shares figure listed: 35,300,000 shares +1 more

4 metrics

Shares to be sold 2,500 shares Common stock planned for sale under Rule 144 by Geoffrey D. Phillips

Aggregate market value $443,991.75 Aggregate market value of the 2,500 GATX common shares to be sold

Shares figure listed 35,300,000 shares Share count figure listed in the securities information section with the planned sale

Proposed sale date September 11, 2026 Proposed date of sale and option exercise for the 2,500 shares

Key Terms

Rule 144, Exercise of Options Under a Registered Plan, aggregate market value

3 terms

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

"Common | 09/11/2026 | Exercise of Options Under a Registered Plan |"

aggregate market value financial

"2500 | 443991.75 | 35300000 | 09/11/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for GATX (GATX)?

It discloses that officer Geoffrey D. Phillips intends to sell 2,500 shares of GATX common stock under Rule 144, following an exercise of options under a registered plan, with a proposed sale date of September 11, 2026 on the NYSE.

How many GATX (GATX) shares are planned to be sold and when?

The notice indicates a planned sale of 2,500 shares of GATX common stock with a proposed sale date of September 11, 2026, to be executed on the NYSE through Morgan Stanley Smith Barney LLC.

What is the approximate value of the GATX (GATX) shares in the Form 144 filing?

The shares covered by the notice have an aggregate market value of $443,991.75, based on the information provided in the securities section of the filing for the 2,500 shares to be sold.

How were the GATX (GATX) shares in this Form 144 obtained?

The filing states that the 2,500 shares are to be sold upon exercise of options under a registered plan, with the method of acquisition described as an option exercise for cash on September 11, 2026.

Who is the broker for the planned GATX (GATX) Rule 144 sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, which is designated to handle the sale of the 2,500 GATX common shares on the NYSE under the Rule 144 notice.

What share count context is given for GATX (GATX) in the Form 144?

The securities information section lists a figure of 35,300,000 shares, presented alongside the planned 2,500-share sale and the aggregate market value of $443,991.75 as of the proposed transaction date of September 11, 2026.

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

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Available on EDGAR 09/11/2026 - 04:07 PM EDT Accepted by SEC EDGAR 09/11/2026 - 04:06 PM EDT 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	0001989421
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	GEOFFREY D PHILLIPS
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	2500	443991.75	35300000	09/11/2026	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	09/11/2026	Exercise of Options Under a Registered Plan	Issuer			2500	09/11/2026	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	09/11/2026
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/ Geoffrey D Phillips
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)