American Tower director reports buying 338 shares

Q: How many AMT shares did Teresa Hillary Clarke buy most recently, and at what price?

Teresa Hillary Clarke reported buying 43 AMT common shares on October 20, 2026, at $183.20 per share. The purchase was made through a dividend reinvestment plan administered by her broker. No Rule 10b5-1 plan is reported.

The latest reported purchase was priced at $183.20 per share.

Filing Impact

(Moderate)

Filing Sentiment

(Positive)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

AMERICAN TOWER CORP (AMT) director Teresa Hillary Clarke reported 15 direct purchases totaling 338 shares of common stock from April 28, 2023, through October 20, 2026. The purchases were made through a dividend reinvestment plan administered by her broker; shares covered by earlier transaction notes were described as inadvertently not previously reported.

Insider Trade Summary

Net Buyer: 338.234 shares

Net Buy 15 txns

Insider Clarke Teresa Hillary

Role Director

Bought 338.234 shs ($64K)

Type	Security	Shares	Price	Value
Purchase	Common Stock ^F2	42.926	$183.20	$8K
Purchase	Common Stock ^F1	46.448	$167.52	$8K
Purchase	Common Stock ^F1	43.5	$177.08	$8K
Purchase	Common Stock ^F1	30.713	$178.04	$5K
Purchase	Common Stock ^F1	28.657	$189.12	$5K
Purchase	Common Stock ^F1	24.095	$223.23	$5K
Purchase	Common Stock ^F1	25.488	$209.33	$5K
Purchase	Common Stock ^F1	17.577	$187.27	$3K
Purchase	Common Stock ^F1	14.371	$227.42	$3K
Purchase	Common Stock ^F1	15.873	$204.28	$3K
Purchase	Common Stock ^F1	18.588	$172.82	$3K
Purchase	Common Stock ^F1	7.68	$199.95	$2K
Purchase	Common Stock ^F1	8.452	$171.52	$1K
Purchase	Common Stock ^F1	7.192	$193.78	$1K
Purchase	Common Stock ^F1	6.674	$205.93	$1K

Holdings After Transaction: Common Stock — 5,645.234 shares (Direct)

Footnotes (2)

F1. Reflects shares acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker, and inadvertently not previously reported.
F2. Reflects shares acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker.

Key Figures

Reported purchase transactions: 15 transactions Shares purchased: 338 shares Latest purchase: 43 shares +3 more

6 metrics

Reported purchase transactions 15 transactions April 28, 2023, through October 20, 2026

Shares purchased 338 shares Aggregate purchases reported through the broker-administered dividend reinvestment plan

Latest purchase 43 shares October 20, 2026

Price per share $183.20 Purchase on October 20, 2026

Purchase 46 shares July 13, 2026

Price per share $167.52 Purchase on July 13, 2026

Key Terms

dividend reinvestment plan, Rule 10b5-1 plan

2 terms

dividend reinvestment plan financial

"shares acquired pursuant to a dividend reinvestment plan"

A dividend reinvestment plan lets shareholders automatically use cash dividends to buy more shares of the same company instead of receiving the money. It matters to investors because it turns regular payouts into a steady way to grow ownership and take advantage of compound returns—like having your savings automatically buy additional slices of a pie over time—while often reducing transaction costs and smoothing purchase timing.

Rule 10b5-1 plan regulatory

"No Rule 10b5-1 plan is reported"

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

FAQ

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

How many AMT shares did Teresa Hillary Clarke buy most recently, and at what price?

Teresa Hillary Clarke reported buying 43 AMT common shares on October 20, 2026, at $183.20 per share. The purchase was made through a dividend reinvestment plan administered by her broker. No Rule 10b5-1 plan is reported.

Which AMT purchases were described as not previously reported?

The purchases linked to the note about shares acquired through the dividend reinvestment plan were described as inadvertently not previously reported. Those transactions include purchases dated April 28, 2023, through July 13, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google

Available on EDGAR 10/22/2026 - 05:43 PM EDT Accepted by SEC EDGAR 10/22/2026 - 05:42 PM EDT

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

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^*

Clarke Teresa Hillary

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/28/2023

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	04/28/2023		P⁽¹⁾		6.674	A	$205.93	5,313.674	D
Common Stock	07/10/2023		P⁽¹⁾		7.192	A	$193.78	5,320.866	D
Common Stock	10/27/2023		P⁽¹⁾		8.452	A	$171.52	5,329.318	D
Common Stock	02/01/2024		P⁽¹⁾		7.68	A	$199.95	5,336.998	D
Common Stock	04/26/2024		P⁽¹⁾		18.588	A	$172.82	5,355.586	D
Common Stock	07/12/2024		P⁽¹⁾		15.873	A	$204.28	5,371.459	D
Common Stock	10/25/2024		P⁽¹⁾		14.371	A	$227.42	5,385.83	D
Common Stock	02/03/2025		P⁽¹⁾		17.577	A	$187.27	5,403.407	D
Common Stock	04/28/2025		P⁽¹⁾		25.488	A	$209.33	5,428.895	D
Common Stock	07/11/2025		P⁽¹⁾		24.095	A	$223.23	5,452.99	D
Common Stock	10/20/2025		P⁽¹⁾		28.657	A	$189.12	5,481.647	D
Common Stock	02/02/2026		P⁽¹⁾		30.713	A	$178.04	5,512.36	D
Common Stock	04/28/2026		P⁽¹⁾		43.5	A	$177.08	5,555.86	D
Common Stock	07/13/2026		P⁽¹⁾		46.448	A	$167.52	5,602.308	D
Common Stock	10/20/2026		P⁽²⁾		42.926	A	$183.2	5,645.234	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Reflects shares acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker, and inadvertently not previously reported.

2. Reflects shares acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker.

Remarks:

As of the date of this filing, the reporting person is no longer enrolled a dividend reinvestment plan administered by the reporting person's broker.

	/s/ Marina A. Breed, as attorney-in-fact	10/22/2026
	** 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)

Source: View Original Filing on SEC EDGAR