AMT Form 144 covers 5,000-share stock sale

AMT received a Form 144 notice covering a proposed sale of up to 5,000 shares of its common stock through Morgan Stanley Smith Barney LLC Executive Financial Services.

Accepted by SEC EDGAR 07/29/2026 - 04:19 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

AMT received a Form 144 notice covering a proposed sale of up to 5,000 shares of its common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The shares have an aggregate market value of $894,425.50 and are indicated for sale on or after July 29, 2026 on the NYSE.

The shares derive from multiple restricted stock awards originally issued by the company on various dates, including 2014, 2017, 2025, and 2026, with individual award portions of 587, 315, 195, 1,261, 754, 837, 848, and 203 shares listed as the sources.

Key Figures

Shares covered: 5,000 shares Aggregate market value: $894,425.50 Proposed sale date: 07/29/2026 +3 more

6 metrics

Shares covered 5,000 shares Common stock indicated for sale under Form 144

Aggregate market value $894,425.50 Value of 5,000 AMT common shares indicated for sale

Proposed sale date 07/29/2026 Date the common shares are indicated for NYSE sale

Restricted stock portion 587 shares Portion from restricted stock award dated 03/10/2014

Restricted stock portion 1,261 shares Portion from restricted stock award dated 03/10/2026

Restricted stock portion 848 shares Portion from restricted stock award dated 03/11/2026

Key Terms

Form 144, Restricted Stock, Executive Financial Services

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

Restricted Stock financial

"Common | 03/10/2014 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

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

What does the Form 144 filing for AMT disclose?

The Form 144 for AMT discloses a planned sale of up to 5,000 common shares through Morgan Stanley Smith Barney LLC Executive Financial Services, with an indicated aggregate market value of $894,425.50 on the NYSE.

How many AMT shares are covered by this Form 144 notice?

The notice covers up to 5,000 shares of AMT common stock. These shares are tied to several restricted stock awards with portions of 587, 315, 195, 1,261, 754, 837, 848, and 203 shares each.

What is the aggregate market value of AMT shares in the Form 144?

The aggregate market value of the AMT shares referenced in the Form 144 is $894,425.50. This value applies to the 5,000 common shares indicated for potential sale through the broker on the NYSE.

When are the AMT shares indicated for sale under this Form 144?

The AMT shares are indicated for sale on or after July 29, 2026. The sale is to be executed on the NYSE through Morgan Stanley Smith Barney LLC Executive Financial Services as specified in the notice.

What is the source of the AMT shares listed in the Form 144?

The AMT shares come from multiple Restricted Stock awards issued by the company on dates such as 03/10/2014, 03/11/2017, 06/01/2025, 03/10/2026, 03/11/2026, and 06/01/2026, with specific share amounts allocated from each award.

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

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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	0001363889
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	AMERICAN TOWER CORPORATION
SEC File Number	001-14195
Address of Issuer	222 Berkeley Street Boston MASSACHUSETTS 02116
Phone	(617) 375-7500
Name of Person for Whose Account the Securities are To Be Sold	ROBERT MEYER
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	5000	894425.50	465960048	07/29/2026	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	03/10/2014	Restricted Stock	Issuer			587	03/10/2014	Not Applicable
Common	03/11/2017	Restricted Stock	Issuer			315	03/11/2017	Not Applicable
Common	06/01/2025	Restricted Stock	Issuer			195	06/01/2025	Not Applicable
Common	03/10/2026	Restricted Stock	Issuer			1261	03/10/2026	Not Applicable
Common	03/10/2026	Restricted Stock	Issuer			754	03/10/2026	Not Applicable
Common	03/10/2026	Restricted Stock	Issuer			837	03/10/2026	Not Applicable
Common	03/11/2026	Restricted Stock	Issuer			848	03/11/2026	Not Applicable
Common	06/01/2026	Restricted Stock	Issuer			203	06/01/2026	Not Applicable

* 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	07/29/2026
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/ Robert J Meyer
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)