American Tower director awarded 1,209 RSUs

REEVE PAMELA D A reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 03/12/2026 - 04:31 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

REEVE PAMELA D A reported acquisition or exercise transactions in this Form 4 filing.

American Tower director Pamela D.A. Reeve received an equity grant of 1,209 restricted stock units (RSUs). The RSUs were awarded under the company’s 2007 Equity Incentive Plan and will vest on March 10, 2027. Following this grant, she holds 21,899 shares of common stock directly.

Insider Trade Summary

Grant/Award: 1,209 shares

Grant/Award 1 txn

Insider REEVE PAMELA D A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,209	$0.00	$0.00

Holdings After Transaction: Common Stock — 21,899 shares (Direct)

Holdings Before and After: Common Stock, 20,690 to 21,899 shares (Direct)

Footnotes (1)

1. F1. These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2027. Each RSU represents a contingent right to receive one share of Common Stock.

FAQ

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

What insider transaction did AMT director Pamela Reeve report on this Form 4?

Pamela D.A. Reeve reported receiving 1,209 restricted stock units as an equity award. The grant was made in shares of American Tower common stock under its 2007 Equity Incentive Plan, reflecting routine director compensation rather than an open-market purchase or sale.

When do Pamela Reeve’s newly granted AMT RSUs vest?

The 1,209 restricted stock units granted to Pamela D.A. Reeve vest on March 10, 2027. Vesting means she will receive one share of American Tower common stock for each RSU at that time, assuming continued satisfaction of any applicable service conditions.

How many AMT shares does Pamela Reeve hold after this RSU grant?

After the reported transaction, Pamela D.A. Reeve holds 21,899 shares of American Tower common stock directly. This total reflects the impact of the 1,209-share RSU grant disclosed in the Form 4 and shows her ongoing equity stake as a company director.

What does each AMT restricted stock unit granted to Pamela Reeve represent?

Each restricted stock unit granted to Pamela D.A. Reeve represents a contingent right to receive one share of American Tower common stock. These RSUs convert into shares only upon vesting, which for this award occurs on March 10, 2027, under the equity plan’s terms.

Under which plan were Pamela Reeve’s AMT RSUs granted?

The 1,209 RSUs granted to Pamela D.A. Reeve were issued under American Tower’s 2007 Equity Incentive Plan, as amended. This plan governs stock-based compensation awards such as restricted stock units for directors, executives, and other eligible participants at the company.

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

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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^*

REEVE PAMELA D A

(Last) (First) (Middle)

222 BERKELEY STREET

(Street)

BOSTON MA 02116

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
03/10/2026

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

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

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

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	03/10/2026		A		1,209(1)	A	$0	21,899	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:

1. These restricted stock units ("RSUs") were granted pursuant to the 2007 Equity Incentive Plan, as amended, and vest on March 10, 2027. Each RSU represents a contingent right to receive one share of Common Stock.

Remarks:

	/s/ Marina A. Breed, as attorney-in-fact	03/12/2026
	** 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.
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