# EDGAR Filing Document

**Accession Number:** 0001053507
**File Stem:** 0001053507-26-000108
**Filing Date:** 2026-5
**Character Count:** 8233
**Document Hash:** 50a7e7b211cba5a6510a38ad2296df58
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001053507-26-000108.hdr.sgml**: 20260507

**ACCESSION NUMBER**: 0001053507-26-000108

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260507

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**FILED AS OF DATE**: 20260507

**DATE AS OF CHANGE**: 20260507

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMERICAN TOWER CORP /MA/
- **CENTRAL INDEX KEY:** 0001053507
- **STANDARD INDUSTRIAL CLASSIFICATION:** REAL ESTATE INVESTMENT TRUSTS [6798]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **EIN:** 650723837
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14195
- **FILM NUMBER:** 26954250

**BUSINESS ADDRESS:**
- **STREET 1:** 222 BERKELEY STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** 6173757500

**MAIL ADDRESS:**
- **STREET 1:** 222 BERKELEY STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMERICAN TOWER SYSTEMS CORP
- **DATE OF NAME CHANGE:** 19980128

?xml version='1.0' encoding='ASCII'? amt-20260507

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON D.C. 20549**

**FORM 8-K** 

**CURRENT REPORT PURSUANT**

**TO SECTION 13 OR 15(d) OF THE**

**SECURITIES EXCHANGE ACT OF 1934**

**Date of Report (Date of Earliest Event Reported): May 7, 2026** 

**AMERICAN TOWER CORPORATION** 

**(Exact Name of Registrant as Specified in Charter)**

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| | | |
|:---|:---|:---|
| **Delaware** | **001-14195** | **65-0723837** |
| **(State or Other Jurisdiction of Incorporation)** | **(Commission File Number)** | **(I.R.S. Employer Identification No.)** |

---

**222 Berkeley Street**

**Boston, Massachusetts 02116** 

**(Address of Principal Executive Offices) (Zip Code)**

**(617) 375-7500** 

**(Registrant's telephone number, including area code)**

**Not Applicable**

**(Former name or former address, if changed since last report.)**

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

**Securities registered pursuant to Section 12(b) of the Act:** 

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| **Common Stock, $0.01 par value** | **AMT** | **New York Stock Exchange** |
| **1.950% Senior Notes due 2026** | **AMT 26B** | **New York Stock Exchange** |
| **0.450% Senior Notes due 2027** | **AMT 27C** | **New York Stock Exchange** |
| **0.400% Senior Notes due 2027** | **AMT 27D** | **New York Stock Exchange** |
| **4.125% Senior Notes due 2027** | **AMT 27F** | **New York Stock Exchange** |
| **0.500% Senior Notes due 2028** | **AMT 28A** | **New York Stock Exchange** |
| **0.875% Senior Notes due 2029** | **AMT 29B** | **New York Stock Exchange** |
| **0.950% Senior Notes due 2030** | **AMT 30C** | **New York Stock Exchange** |
| **3.900% Senior Notes due 2030** | **AMT 30D** | **New York Stock Exchange** |
| **4.625% Senior Notes due 2031** | **AMT 31B** | **New York Stock Exchange** |
| **1.000% Senior Notes due 2032** | **AMT 32** | **New York Stock Exchange** |
| **3.625% Senior Notes due 2032** | **AMT 32B** | **New York Stock Exchange** |
| **1.250% Senior Notes due 2033** | **AMT 33** | **New York Stock Exchange** |
| **4.100% Senior Notes due 2034** | **AMT 34A** | **New York Stock Exchange** |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐

  

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**Item 1.01&nbsp;&nbsp;&nbsp;&nbsp;Entry into a Material Definitive Agreement.**

On May 7, 2026, American Tower Corporation (the "Company") entered into three separate amendment agreements (each an "Amendment" and collectively, the "Amendments") to amend the agreements for each of its (i) $6.0 billion senior unsecured multicurrency revolving credit facility, as amended and restated on December 8, 2021, as further amended, with Toronto Dominion (Texas) LLC ("TD") as Administrative Agent (as defined therein) (the "2021 Multicurrency Credit Facility"), (ii) $4.0 billion senior unsecured revolving credit facility, as amended and restated on December 8, 2021, as further amended, with TD as Administrative Agent (as defined therein) (the "2021 Credit Facility") and (iii) $1.0 billion unsecured term loan, as amended and restated on December 8, 2021, as further amended, with Mizuho Bank, Ltd. as Administrative Agent (as defined therein) (the "2021 Term Loan" and, collectively with the 2021 Multicurrency Credit Facility and the 2021 Credit Facility, the "Loans").

The Amendments to the Loans, among other things:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;i.extend the maturity dates of the 2021 Multicurrency Credit Facility, the 2021 Credit Facility and the 2021 Term Loan to May 1, 2029, May 1, 2031 and May 1, 2029, respectively;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ii.include limited conditionality provisions in the 2021 Multicurrency Credit Facility, permitting the Company to borrow up to $5.0 billion in connection with certain acquisitions subject to such limited conditionality provisions;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;iii.increase the swingline sublimit under each of the 2021 Multicurrency Credit Facility and the 2021 Credit Facility from $50.0 million to $100.0 million;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;iv.amend the covenant governing the incurrence of liens under each of the Loans to permit the incurrence of liens securing indebtedness in an aggregate amount not to exceed the 3.5x ratio of Senior Secured Debt to Adjusted EBITDA (each as defined in each of the Loans); and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;v.amend the covenant governing the incurrence of indebtedness under each of the Loans to restrict the incurrence of indebtedness to subsidiaries of the Company only.

Except as described above, all of the other material terms of the Loans remain in full force and effect.

The foregoing description is only a summary of certain provisions of the Amendments and is qualified in its entirety by the terms of the Amendments, copies of which will be filed as exhibits to the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2026.

**Item 2.03&nbsp;&nbsp;&nbsp;&nbsp;Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.**

Please refer to the discussion under Item 1.01 above, which is incorporated under this Item 2.03 by reference.

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**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | | AMERICAN TOWER CORPORATION | AMERICAN TOWER CORPORATION |
| | | (Registrant) | (Registrant) |
| Date: | May 7, 2026 | By: | /s/ Rodney M. Smith |
|  |  |  | Rodney M. Smith |
|  |  |  | Executive Vice President, Chief Financial Officer and Treasurer |

---