Quick Answer
IONIS PHARMACEUTICALS INC reported Shares Outstanding of 163.30 million shares for fiscal year 2025.
IONIS PHARMACEUTICALS INC Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 163.30M | +3.4% |
| 2024 | 157.91M | +9.4% |
| 2023 | 144.34M | +1.6% |
| 2022 | 142.06M | +0.6% |
| 2021 | 141.21M | +0.6% |
| 2020 | 140.37M | +0.0% |
| 2019 | 140.34M | +1.7% |
| 2018 | 137.93M | +10.4% |
| 2017 | 124.98M | +2.7% |
| 2016 | 121.64M | +1.1% |
| 2015 | 120.35M | +1.6% |
| 2014 | 118.44M | +1.7% |
| 2013 | 116.47M | +14.8% |
| 2012 | 101.48M | +1.4% |
| 2011 | 100.04M | +0.7% |
| 2010 | 99.39M | +0.5% |
| 2009 | 98.85M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 161.14M | +2.1% | +1.2% |
| June 30, 2025 | 159.20M | +9.0% | +0.1% |
| March 31, 2025 | 159.04M | +9.0% | +0.7% |
| December 31, 2024 | 157.91M | +9.4% | +0.1% |
| September 30, 2024 | 157.81M | +10.1% | +8.1% |
| June 30, 2024 | 146.03M | +2.0% | +0.1% |
| March 31, 2024 | 145.84M | +2.0% | +1.0% |
| December 31, 2023 | 144.34M | +1.6% | +0.7% |
- IONIS PHARMACEUTICALS INC showed an increase of +3.4% in Shares Outstanding compared to the prior fiscal year.
- Over the 2009–2025 period, IONIS PHARMACEUTICALS INC’s shares outstanding has grown by 65.2% (from 98.85 million shares to 163.30 million shares).
- The most recent figure is from IONIS PHARMACEUTICALS INC’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 26, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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