AMT (NYSE: AMT) insider schedules sale and reports 10b5-1 trades

Rhea-AI Filing Summary

AMT reports a planned sale of common stock by an affiliated holder. The seller has arranged to sell 1,791 shares of AMT common stock through Morgan Stanley Smith Barney LLC, with the shares listed on the NYSE. The stock to be sold traces to restricted stock units granted on 03/10/2023 by the issuer. The filing also notes prior Rule 10b5-1 plan activity, including a sale of 416 common shares on 04/29/2026 for proceeds of $73,856.64.

Key Figures

Planned shares to be sold: 1,791 shares Prior shares sold: 416 shares Prior sale proceeds: $73,856.64 +1 more

4 metrics

Planned shares to be sold 1,791 shares Common stock to be sold through Morgan Stanley Smith Barney LLC

Prior shares sold 416 shares Common stock sale on 04/29/2026 under 10b5-1 sales

Prior sale proceeds $73,856.64 Total proceeds from 416-share sale on 04/29/2026

RSU grant date 03/10/2023 Grant date for restricted stock units underlying the planned sale

Key Terms

Restricted Stock Units, 10b5-1, Form 144

3 terms

Restricted Stock Units financial

"Common | 03/10/2023 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 regulatory

"10b5-1 Sales for RUTH T DOWLING 222 Berkeley Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Form 144 regulatory

"144: Securities 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.

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Available on EDGAR 07/28/2026 - 04:28 PM Accepted by SEC EDGAR 07/28/2026 - 04:28 PM Learn about SEC filing dates

FAQ

How many AMT shares are planned to be sold in this Form 144?

The filing indicates a planned sale of 1,791 shares of AMT common stock through Morgan Stanley Smith Barney LLC, with the shares listed on the NYSE and originating from restricted stock units.

What prior AMT stock sales are disclosed in this Form 144 filing?

The document lists a prior sale of 416 shares of AMT common stock on 04/29/2026 for total proceeds of $73,856.64, described as 10b5-1 sales for Ruth T Dowling.

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

The common shares planned for sale are tied to Restricted Stock Units that were granted on 03/10/2023 by the issuer, indicating they originated as equity compensation rather than open-market purchases.

Which broker is handling the planned AMT stock sale?

The planned sale of 1,791 AMT common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

What trading plan is mentioned in this AMT Form 144 for prior sales?

The filing references 10b5-1 sales for Ruth T Dowling, indicating that at least some prior AMT share dispositions, including the 416-share sale on 04/29/2026, were executed under a pre-arranged trading plan.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	1791	298631.34	465893069	07/28/2026	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	03/10/2023	Restricted Stock Units	Issuer			1791	03/10/2023	N/A

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for RUTH T DOWLING 222 Berkeley Street Boston MA 02116	Common	04/29/2026	416	73856.64

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)