American Tower (NYSE: AMT) insider Robert Hormats reports holding 9,597 shares

Rhea-AI Filing Summary

American Tower Corp. insider Robert D. Hormats filed a Form 4 that functions as a holdings report rather than a trade notice. The filing shows he directly owns 9,597 shares of American Tower common stock following the reported date. No explicit purchase, sale, or other transaction is indicated in the data provided.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider HORMATS ROBERT D

Role null

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 9,597 shares (Direct, null)

Footnotes (1)

Key Figures

Shares held after filing: 9,597 shares

1 metrics

Shares held after filing 9,597 shares Total common stock directly owned following reported date

Key Terms

Common Stock, Form 4, direct ownership

3 terms

Common Stock financial

"security_title: "Common Stock""

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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

direct ownership financial

"ownership_type: "direct""

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

HORMATS ROBERT D

(Last) (First) (Middle)

222 BERKELEY STREET

(Street)

BOSTON MASSACHUSETTS 02116

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AMERICAN TOWER CORP /MA/ [ AMT ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Former Director

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock								9,597	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Robert D. Hormats did not stand for re-election at the issuer's 2026 Annual Meeting of Stockholders. Accordingly, effective May 20, 2026, Mr. Hormats is no longer a director of the issuer.

	/s/ Marina A. Breed, as attorney-in-fact	05/20/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What does Robert D. Hormats’ latest Form 4 for AMT show?

The Form 4 shows Robert D. Hormats directly holding 9,597 shares of American Tower common stock. It appears as an ownership or holdings entry, with no explicit buy, sell, or derivative exercise transaction reported in the provided data.

Did Robert D. Hormats buy or sell AMT shares in this Form 4?

The filing does not show a clear purchase or sale of AMT shares. The transaction is coded as a holding entry with an unknown transaction code, and simply reports 9,597 shares owned directly after the reported date.

How many AMT shares does Robert D. Hormats hold after this filing?

After the reported event, Robert D. Hormats directly holds 9,597 AMT common shares. This figure is listed as the total shares following the transaction and represents his direct ownership position in American Tower common stock in this filing.

Are there any derivative securities reported for Robert D. Hormats in this AMT Form 4?

No derivative securities are listed for Robert D. Hormats in this Form 4. The derivativeSummary is empty, indicating no options, warrants, or other derivative positions are shown in the provided data for this filing.

Is the AMT Form 4 for Robert D. Hormats a routine filing?

Yes, this appears to be a routine ownership reporting Form 4. It records 9,597 AMT common shares held directly, without clearly identified purchases, sales, gifts, or tax-withholding events in the transaction details provided.