TickerFacts.

Ionis Pharmaceuticals Inc (IONS): Weighted Average Diluted Shares

Annual figures by period end, from SEC filings.

Restated years: each year's figure is from the latest filing that reports it. The company later restated the year ended 2019-12-31 (for example after a spin-off or a discontinued operation), while the year before it was last reported on the old basis. Changes across those points are marked n/c (not comparable), and growth rates are not computed across them.

160.01M
Year ended 2025-12-31
+4.1%
3-year compound annual growth
+2.8%
5-year compound annual growth
2008-12-31: 94.57M2009-12-31: 98.11M2010-12-31: 99.14M2011-12-31: 99.66M2012-12-31: 100.58M2013-12-31: 110.50M2015-12-31: 119.72M2016-12-31: 120.93M2017-12-31: 126.10M2018-12-31: 134.06M2019-12-31: 153.16M2020-12-31: 139.61M2021-12-31: 141.02M2022-12-31: 141.85M2023-12-31: 143.19M2024-12-31: 149.51M2025-12-31: 160.01M160.01M
2008-12-31 Weighted Average Diluted Shares (shares) 2025-12-31
Period endedWeighted Average Diluted SharesChange YoYSource filing
2025-12-31160.01M+7.0%2026-02-26, From 2025-01-01
2024-12-31149.51M+4.4%2026-02-26, From 2024-01-01
2023-12-31143.19M+0.9%2026-02-26, From 2023-01-01
2022-12-31141.85M+0.6%2025-02-19, From 2022-01-01
2021-12-31141.02M+1.0%2024-02-21, From 2021-01-01
2020-12-31139.61M-8.8%2023-02-22, From 2020-01-01
2019-12-31153.16Mn/c2022-02-25, From 2019-01-01
2018-12-31134.06M+6.3%2021-02-24, From 2018-01-01
2017-12-31126.10M+4.3%2020-03-02, From 2017-01-01
2016-12-31120.93M+1.0%2019-03-01, From 2016-01-01
2015-12-31119.72Mn/a2018-02-28, From 2015-01-01
No annual figure between 2013-12-31 and 2015-12-31.
2013-12-31110.50M+9.9%2014-03-03, From 2013-01-01
2012-12-31100.58M+0.9%2014-03-03, From 2012-01-01
2011-12-3199.66M+0.5%2014-03-03, From 2011-01-01
2010-12-3199.14M+1.1%2013-02-28, From 2010-01-01
2009-12-3198.11M+3.7%2012-02-29, From 2009-01-01
2008-12-3194.57Mn/a2011-03-01, From 2008-01-01