Number of shares outstanding for Ionis Pharmaceuticals (IONS)

Number of shares outstanding as of December 2025 : 160,000,000

According to Ionis Pharmaceuticals 's latest financial reports and stock price the company's current number of shares outstanding is 160,000,000. At the end of 2025 the company had 160,000,000 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Ionis Pharmaceuticals from 1996 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	0.16 B	1.27%
2024	0.15 B	9.72%
2023	0.14 B	1.41%
2022	0.14 B	0.71%
2021	0.14 B	0.71%
2020	0.14 B	-0.71%
2019	0.14 B	2.4%
2018	0.13 B	10.32%
2017	0.12 B	2.87%
2016	0.12 B	0.96%
2015	0.12 B	1.66%
2014	0.11 B	1.81%
2013	0.11 B	14.69%
2012	0.10 B	1.56%
2011	99.68 M	0.49%
2010	99.19 M	0.89%
2009	98.32 M	2.56%
2008	95.86 M	14.2%
2007	83.94 M	14.07%
2006	73.58 M	14.83%
2005	64.08 M	11.91%
2004	57.26 M	3.11%
2003	55.54 M	1.52%
2002	54.7 M	24.71%
2001	43.86 M	14.1%
2000	38.44 M	34.26%
1999	28.63 M	14.55%
1998	25 M	-9.09%
1997	27.5 M	5.42%
1996	26.08 M

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
NRC Health NRC	22,130,000	-86.17%	🇺🇸 USA
Nymox Pharmaceutical NYMX	91,265,140	-42.96%	Bahamas

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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