Quick Answer
Alkermes plc. reported Shares Outstanding of 165.61 million shares for fiscal year 2025.
Alkermes plc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 165.61M | +2.1% |
| 2024 | 162.18M | -2.9% |
| 2023 | 166.98M | +1.6% |
| 2022 | 164.38M | +1.5% |
| 2021 | 161.94M | +1.7% |
| 2020 | 159.16M | +0.0% |
| 2020 | 159.16M | +0.9% |
| 2019 | 157.78M | +1.3% |
| 2018 | 155.76M | +1.1% |
| 2017 | 154.01M | +1.0% |
| 2016 | 152.43M | +1.1% |
| 2015 | 150.70M | +2.1% |
| 2014 | 147.54M | +7.1% |
| 2013 | 137.79M | +3.0% |
| 2013 | 133.75M | +2.7% |
| 2012 | 130.18M | +36.0% |
| 2011 | 95.70M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 165.10M | +2.1% | +0.0% |
| June 30, 2025 | 165.05M | -0.5% | +0.1% |
| March 31, 2025 | 164.85M | -2.6% | +1.7% |
| December 31, 2024 | 162.18M | -2.9% | +0.2% |
| September 30, 2024 | 161.78M | -3.0% | -2.5% |
| June 30, 2024 | 165.89M | -0.4% | -1.9% |
| March 31, 2024 | 169.18M | +1.9% | +1.3% |
| December 31, 2023 | 166.98M | +1.6% | +0.2% |
- Alkermes plc. showed an increase of +2.1% in Shares Outstanding compared to the prior fiscal year.
- Over the 2011–2025 period, Alkermes plc.’s shares outstanding has grown by 73.0% (from 95.70 million shares to 165.61 million shares).
- The most recent figure is from Alkermes plc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 25, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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