Alkermes plc Shares Outstanding 2010–2025
Alkermes plc reported 165.6M of shares outstanding for fiscal 2025. That was 2.1% higher than fiscal 2024. Compared with fiscal 2020, the change was +4.0%. A rising share count can dilute per-share ownership; the filings should be checked for issuance and stock-compensation details.
| Fiscal year | Shares Outstanding | Change (YoY) |
|---|---|---|
| FY 2025 | 165.6M | +2.1% |
| FY 2024 | 162.2M | -2.9% |
| FY 2023 | 167.0M | +1.6% |
| FY 2022 | 164.4M | +1.5% |
| FY 2021 | 161.9M | +1.7% |
| FY 2020 | 159.2M | +0.9% |
| FY 2019 | 157.8M | +1.3% |
| FY 2018 | 155.8M | +1.1% |
| FY 2017 | 154.0M | +1.0% |
| FY 2016 | 152.4M | +1.1% |
| FY 2015 | 150.7M | +2.1% |
| FY 2014 | 147.5M | +7.1% |
| FY 2013 | 137.8M | +3.0% |
| FY 2013 | 133.8M | +2.7% |
| FY 2012 | 130.2M | +36.0% |
| FY 2011 | 95.7M | — |
| FY 2010 | 0.0M | — |
Source: Alkermes plc SEC filings — balance sheet (10-K), split-adjusted. Computed deterministically; refreshed nightly (last updated August 2, 2026). Open ALKS 10-K filings at SEC EDGAR · Methodology · Download CSV.
How to read this history
Alkermes plc reported 165.6M of shares outstanding for fiscal 2025. That was 2.1% higher than fiscal 2024. Compared with fiscal 2020, the change was +4.0%. A rising share count can dilute per-share ownership; the filings should be checked for issuance and stock-compensation details. Values remain missing when the cached filing does not disclose a comparable line item; they are never estimated. Stock splits, reorganizations and fiscal-calendar changes can reduce comparability.
Prepared and reviewed by the stockportfolio.pro research desk. Corrections: support@stockportfolio.pro.
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What is Alkermes plc's shares outstanding?
Alkermes plc (ALKS) reported shares outstanding of 165.6M for fiscal year 2025, per its SEC filings.
Where does this data come from?
Figures are computed from Alkermes plc's official SEC filings (balance sheet (10-K), split-adjusted), refreshed nightly. Not investment advice.
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