# EDGAR Filing Document

**Accession Number:** 0001053507
**File Stem:** 0001053507-26-000118
**Filing Date:** 2026-5
**Character Count:** 4908
**Document Hash:** 725298a579d9726a21816bdc87ea556b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001053507-26-000118.hdr.sgml**: 20260527

**ACCESSION NUMBER**: 0001053507-26-000118

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260527

**DATE AS OF CHANGE**: 20260527

**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-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-14195
- **FILM NUMBER:** 261022224

**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

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-A**

**FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES**

**PURSUANT TO SECTION 12(b) or (g)**

**OF THE SECURITIES EXCHANGE ACT OF 1934**

**American Tower Corporation**

**(Exact name of registrant as specified in its charter)**

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| | |
|:---|:---|
| **Delaware** | **65-0723837** |
| (State or other jurisdiction of incorporation or organization) | (IRS Employer Identification No.) |

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**222 Berkeley Street**

**Boston, Massachusetts 02116**

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

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

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| | |
|:---|:---|
| Title of each class | Name of each exchange on which |
| <u>to be so registered</u> | <u>each class is to be registered</u> |
| **4.000% senior notes due 2033** | **New York Stock Exchange** |

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If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. 🗷

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box. ◻

**Securities Act registration statement file number to which this form relates:**

**333-265348 (if applicable)**

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

**None**

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| | |
|:---|:---|
| **Item 1.** | **Description of the Registrant's Securities to be Registered** |

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The description of the 4.000% senior notes due 2033 of American Tower Corporation (the "Registrant") is set forth under the caption "Description of Notes" in the prospectus supplement dated May 19, 2026, as filed with the Securities and Exchange Commission (the "Commission") on May 20, 2026 pursuant to Rule 424(b)(2) under the Securities Act of 1933, as amended, to the Registrant's registration statement on Form S-3 (File No. 333-287714), as filed with the Commission on June 2, 2025, which description is incorporated herein by reference.

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| | |
|:---|:---|
| **Item 2.** | **Exhibits** |

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| | |
|:---|:---|
| **Exhibit No.** | **Description** |
| 4.1 | <u>[Indenture, dated June 2, 2025, by and between the Registrant and U.S. Bank Trust Company, National Association, as Trustee (incorporated by reference to Exhibit 4.34 of the Registrant's Registration Statement on Form S-3ASR (File No. 333-287714) filed on June 2, 2025).](https://www.sec.gov/Archives/edgar/data/1053507/000119312525132847/d948506dex434.htm)</u> |
| 4.2 | <u>[Supplemental Indenture No. 2, dated May 27, 2026, by and among the Registrant, U.S. Bank Trust Company, National Association, as trustee, and U.S. Bank Europe DAC, UK Branch, as paying agent (incorporated by reference to Exhibit 4.1 of the Registrant's Current Report on Form 8-K (File No. 001-14195) filed on May 27, 2026).](https://www.sec.gov/Archives/edgar/data/1053507/000119312526240535/d913919dex41.htm)</u> |
| 4.3 | <u>[Form of Global Note (included in Exhibit 4.2).](https://www.sec.gov/Archives/edgar/data/1053507/000119312526240535/d913919dex41.htm)</u> |

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**Signature**

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the Registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | | AMERICAN TOWER CORPORATION | AMERICAN TOWER CORPORATION |
| | | (Registrant) | (Registrant) |
| Date: | May 27, 2026 | By: | /s/ Rodney M. Smith |
|  |  |  | Rodney M. Smith |
|  |  |  | Executive Vice President, Chief Financial Officer and Treasurer |

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