AMERICAN TOWER CORP /MA/ SEC Filing

UBS Financial Services Inc. submitted a Form 144 notice regarding Common shares of American Tower Corporation (AMT) tied to restricted stock unit vesting.

Rhea-AI Filing Summary

UBS Financial Services Inc. submitted a Form 144 notice regarding Common shares of American Tower Corporation (AMT) tied to restricted stock unit vesting. The filing lists vested RSU tranches of 118 shares (vested 05/31/2024), 15,531 shares (vested 03/10/2025) and 2,016 shares (vested 03/11/2025). The broker is identified as UBS Financial Services Inc..

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Accepted by SEC EDGAR 02/25/2026 - 05:21 PM EST 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	0001754833
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	116 Huntington Avenue Boston MASSACHUSETTS 02116
Phone	617-585-7609
Name of Person for Whose Account the Securities are To Be Sold	Olivier Puech Trust
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	EVP Latin America

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	UBS Financial Services Inc 1000 Harbor Blvd 3rd Floor Weehawken NJ 07086	17665	3231811.75	468000000	02/25/2026	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	05/31/2024	RSU Vesting	American Tower Corporation			118	05/31/2024	vesting
Common	03/10/2025	RSU Vesting	American Tower Corporation			15531	03/10/2025	vesting
Common	03/11/2025	RSU Vesting	American Tower Corporation			2016	03/11/2025	vesting

* 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	selling shareholder Olivier Puech Trust, Olivier Puech Trustee former EVP Latin America
Date of Notice	02/25/2026
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/JOSEPH CASSIDY, for UBS Financial Services Inc, as attorney-in-fact for Olivier Puech Trust
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)