IONIS PHARMACEUTICALS INC Common Stock Shares Outstanding

• IONIS PHARMACEUTICALS INC showed an increase of +3.4% in Common Stock Shares Outstanding from 2024 to 2025.
• This data is from IONIS PHARMACEUTICALS INC's annual report (Form 10-K), filed with the SEC on February 26, 2026.
• XBRL data for this metric is available from 2009 to 2025 (17 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
• Quarterly values from 10-Q filings: Q2 2010: 99.11 million shares | Q3 2010: 99.23 million shares | Q1 2011: 99.58 million shares | Q2 2011: 99.62 million shares | Q3 2011: 99.72 million shares | Q1 2012: 100.18 million shares | Q2 2012: 100.32 million shares | Q3 2012: 101.19 million shares | Q1 2013: 102.70 million shares | Q2 2013: 114.29 million shares | Q3 2013: 116.00 million shares | Q1 2014: 117.54 million shares | Q2 2014: 117.67 million shares | Q3 2014: 117.99 million shares | Q1 2015: 119.60 million shares | Q2 2015: 119.88 million shares | Q3 2015: 120.03 million shares | Q1 2016: 120.72 million shares | Q2 2016: 120.85 million shares | Q3 2016: 121.15 million shares | Q1 2017: 123.88 million shares | Q2 2017: 124.15 million shares | Q3 2017: 124.62 million shares | Q1 2018: 125.45 million shares | Q2 2018: 137.16 million shares | Q3 2018: 137.51 million shares | Q1 2019: 139.62 million shares | Q2 2019: 140.39 million shares | Q3 2019: 140.64 million shares | Q1 2020: 139.28 million shares | Q2 2020: 139.49 million shares | Q3 2020: 139.79 million shares | Q1 2021: 140.92 million shares | Q2 2021: 141.02 million shares | Q3 2021: 141.18 million shares | Q1 2022: 141.75 million shares | Q2 2022: 141.83 million shares | Q3 2022: 142.02 million shares | Q1 2023: 143.02 million shares | Q2 2023: 143.17 million shares | Q3 2023: 143.39 million shares | Q1 2024: 145.84 million shares | Q2 2024: 146.03 million shares | Q3 2024: 157.81 million shares | Q1 2025: 159.04 million shares | Q2 2025: 159.20 million shares | Q3 2025: 161.14 million shares.
• Over the full 17 years of available data (2009 to 2025), IONIS PHARMACEUTICALS INC's Common Stock Shares Outstanding has grown by 65.2%.
• Historical annual values: Fiscal year 2025: 163.30 million shares | Fiscal year 2024: 157.91 million shares | Fiscal year 2023: 144.34 million shares | Fiscal year 2022: 142.06 million shares | Fiscal year 2021: 141.21 million shares | Fiscal year 2020: 140.37 million shares | Fiscal year 2019: 140.34 million shares | Fiscal year 2018: 137.93 million shares | Fiscal year 2017: 124.98 million shares | Fiscal year 2016: 121.64 million shares | Fiscal year 2015: 120.35 million shares | Fiscal year 2014: 118.44 million shares | Fiscal year 2013: 116.47 million shares | Fiscal year 2012: 101.48 million shares | Fiscal year 2011: 100.04 million shares | Fiscal year 2010: 99.39 million shares | Fiscal year 2009: 98.85 million shares.
• Data sourced from SEC EDGAR public filings as of August 9, 2026.

Last verified: August 9, 2026