---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-060068"
form_type: "8-K"
ticker: "AMT"
cik: "0001053507"
company_name: "AMERICAN TOWER CORP /MA/"
filed_at: "2023-03-03T23:59:59+00:00"
generated_at: "2026-06-18T12:42:41.174493+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# American Tower issues $1.5B in senior notes to repay revolving credit facilities

## Summary
- $700M of 5.500% senior notes due 2028 and $800M of 5.650% senior notes due 2033 issued.
- Net proceeds of ~$1.4809B after commissions and expenses.
- Proceeds used to repay borrowings under $4.0B and $6.0B revolving credit facilities.
- Notes are senior unsecured; interest payable semi-annually starting Sept 15, 2023.
- Make-whole redemption prior to Feb 15, 2028 (2028 notes) or Dec 15, 2032 (2033 notes).

## SEC filing metadata
- accession: 0001193125-23-060068
- form_type: 8-K
- ticker: AMT
- cik: 0001053507
- company_name: AMERICAN TOWER CORP /MA/
- filed_at: 2023-03-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 1.01, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1053507/000119312523060068/0001193125-23-060068-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1053507/000119312523060068/d305272d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-060068
- JSON: https://secwatch.observer/filing/0001193125-23-060068.json
- Plain text: https://secwatch.observer/filing/0001193125-23-060068.txt

## Key facts
- Debt Financings
  AMERICAN TOWER CORP /MA/ incurred senior notes of $800.0 million with U.S. Bank Trust Company, National Association at 5.650% per annum maturing March 15, 2033.
  - Instrument: senior notes
  - Principal: $800.0 million
  - Counterparty: U.S. Bank Trust Company, National Association
  - Rate: 5.650% per annum
  - Maturity: March 15, 2033
  - Event: incurrence
  source text: $800.0 million aggregate principal amount of its 5.650% senior unsecured notes due 2033 (the "2033 notes"
  evidence_url: https://www.sec.gov/Archives/edgar/data/1053507/000119312523060068/0001193125-23-060068-index.htm
- Debt Financings
  AMERICAN TOWER CORP /MA/ incurred senior notes of $700.0 million with U.S. Bank Trust Company, National Association at 5.500% per annum maturing March 15, 2028.
  - Instrument: senior notes
  - Principal: $700.0 million
  - Counterparty: U.S. Bank Trust Company, National Association
  - Rate: 5.500% per annum
  - Maturity: March 15, 2028
  - Event: incurrence
  source text: completed a registered public offering of $700.0 million aggregate principal amount of its 5.500% senior unsecured notes due 2028 (the "2028 notes")
  evidence_url: https://www.sec.gov/Archives/edgar/data/1053507/000119312523060068/0001193125-23-060068-index.htm
- Material Agreements
  AMERICAN TOWER CORP /MA/ entered into Supplemental Indenture No. 1 with U.S. Bank Trust Company, National Association valued at $700.0 million aggregate principal amount of 5.500% senior unsecured notes due 2028 and $800.0 milli (effective 2023-03-03).
  - Action: entry
  - Agreement: notes offering
  - Counterparty: U.S. Bank Trust Company, National Association
  - Value: $700.0 million aggregate principal amount of 5.500% senior unsecured notes due 2028 and $800.0 milli
  - Effective: 2023-03-03
  source text: The Company issued the Notes under an indenture dated as of June 1, 2022 (the “Base Indenture”), as supplemented by a supplemental indenture dated as of March 3, 2023 (the “Supplemental Indenture No. 1” and, together with the Base Indenture, the “Indenture”), each between the Company and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1053507/000119312523060068/0001193125-23-060068-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.