---
schema_version: "secwatch.filing_event.v1"
accession: "0001053507-24-000009"
form_type: "8-K"
ticker: "AMT"
cik: "0001053507"
company_name: "AMERICAN TOWER CORP /MA/"
filed_at: "2024-02-27T23:59:59+00:00"
generated_at: "2026-06-05T10:25:59.116732+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# American Tower Q4 revenue $2.79B (+3%), net income $85M vs Q4'22 loss of $684M

## Summary
- Full-year revenue up 4.0% to $11,144M; property revenue +5.1% to $11,001M.
- Full-year net income $1,367M (-19.4% YoY); net income attributable to common stockholders $1,483M (-16.0% YoY).
- Adjusted EBITDA $7,087M (+6.7%) for FY; AFFO attributable to common stockholders $4,612M (+2.1%).
- Record colocation/amendment growth in US & Canada; record CoreSite sales; international resilient.
- Impairment charges $604M in FY 2023 (India, Spain goodwill) weighed on net income.

## SEC filing metadata
- accession: 0001053507-24-000009
- form_type: 8-K
- ticker: AMT
- cik: 0001053507
- company_name: AMERICAN TOWER CORP /MA/
- filed_at: 2024-02-27T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1053507/000105350724000009/0001053507-24-000009-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1053507/000105350724000009/amt-20240227.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001053507-24-000009
- JSON: https://secwatch.observer/filing/0001053507-24-000009.json
- Plain text: https://secwatch.observer/filing/0001053507-24-000009.txt

## Key facts
- Earnings Releases
  AMERICAN TOWER CORP /MA/ reported financial results for the year ended December 31, 2023.
  - Period: the year ended December 31, 2023
  - Result: reported results
  source text: On February 27, 2024, American Tower Corporation (the “Company”) issued a press release (the “Press Release”) announcing financial results for the year ended December 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1053507/000105350724000009/0001053507-24-000009-index.htm

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