Quick Answer
AMERICAN TOWER CORP /MA/ reported Shares Outstanding of 466.32 million shares for fiscal year 2025.
AMERICAN TOWER CORP /MA/ Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 466.32M | -0.2% |
| 2024 | 467.38M | +0.2% |
| 2023 | 466.30M | +0.1% |
| 2022 | 465.62M | +2.2% |
| 2021 | 455.77M | +2.6% |
| 2020 | 444.33M | +0.3% |
| 2019 | 442.89M | +0.4% |
| 2018 | 441.06M | +2.9% |
| 2017 | 428.82M | +0.4% |
| 2016 | 427.10M | +0.8% |
| 2015 | 423.89M | +6.9% |
| 2014 | 396.70M | +0.5% |
| 2013 | 394.86M | -0.1% |
| 2012 | 395.09M | +0.4% |
| 2011 | 393.64M | -1.3% |
| 2010 | 398.68M | -0.7% |
| 2009 | 401.60M | +1.2% |
| 2008 | 396.98M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 468.29M | +0.2% | +0.0% |
| June 30, 2025 | 468.22M | +0.2% | +0.0% |
| March 31, 2025 | 468.13M | +0.2% | +0.2% |
| December 31, 2024 | 467.38M | +0.2% | +0.0% |
| September 30, 2024 | 467.28M | +0.2% | +0.0% |
| June 30, 2024 | 467.08M | +0.2% | +0.0% |
| March 31, 2024 | 466.96M | +0.2% | +0.1% |
| December 31, 2023 | 466.30M | +0.1% | +0.0% |
- AMERICAN TOWER CORP /MA/ showed a decrease of -0.2% in Shares Outstanding compared to the prior fiscal year.
- Over the 2008–2025 period, AMERICAN TOWER CORP /MA/’s shares outstanding has grown by 17.5% (from 396.98 million shares to 466.32 million shares).
- The most recent figure is from AMERICAN TOWER CORP /MA/’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 24, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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