Altimmune, Inc. Common Stock Shares Outstanding

• Altimmune, Inc. showed an increase of +53.3% in Common Stock Shares Outstanding from 2024 to 2025.
• This data is from Altimmune, Inc.'s annual report (Form 10-K), filed with the SEC on March 6, 2026.
• XBRL data for this metric is available from 2010 to 2025 (16 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 2011: 48.19 million shares | Q3 2011: 48.19 million shares | Q1 2012: 48.31 million shares | Q2 2012: 48.35 million shares | Q3 2012: 48.35 million shares | Q1 2013: 48.42 million shares | Q2 2013: 51.17 million shares | Q3 2013: 52.30 million shares | Q1 2014: 53.77 million shares | Q2 2014: 55.53 million shares | Q3 2014: 62.22 million shares | Q1 2015: 63.67 million shares | Q2 2015: 63.91 million shares | Q3 2015: 64.36 million shares | Q1 2016: 64.44 million shares | Q2 2016: 64.79 million shares | Q3 2016: 66.42 million shares | Q1 2017: 68.82 million shares | Q2 2017: 15.42 million shares | Q3 2017: 15.63 million shares | Q1 2018: 22.25 million shares | Q2 2018: 37.36 million shares | Q3 2018: 1.73 million shares | Q1 2019: 13.45 million shares | Q2 2019: 13.45 million shares | Q3 2019: 15.34 million shares | Q1 2020: 15.36 million shares | Q2 2020: 26.55 million shares | Q3 2020: 33.07 million shares | Q1 2021: 38.26 million shares | Q2 2021: 39.69 million shares | Q3 2021: 39.70 million shares | Q1 2022: 43.22 million shares | Q2 2022: 46.37 million shares | Q3 2022: 49.16 million shares | Q1 2023: 49.29 million shares | Q2 2023: 52.66 million shares | Q3 2023: 52.86 million shares | Q1 2024: 70.90 million shares | Q2 2024: 71.05 million shares | Q3 2024: 71.12 million shares | Q1 2025: 77.83 million shares | Q2 2025: 85.08 million shares | Q3 2025: 95.60 million shares.
• Over the full 16 years of available data (2010 to 2025), Altimmune, Inc.'s Common Stock Shares Outstanding has grown by 139.8%.
• Historical annual values: Fiscal year 2025: 110.88 million shares | Fiscal year 2024: 72.35 million shares | Fiscal year 2023: 70.68 million shares | Fiscal year 2022: 49.20 million shares | Fiscal year 2021: 40.99 million shares | Fiscal year 2020: 37.14 million shares | Fiscal year 2019: 15.31 million shares | Fiscal year 2018: 9.08 million shares | Fiscal year 2017: 608,499 shares | Fiscal year 2016: 6.92 million shares | Fiscal year 2015: 64.38 million shares | Fiscal year 2014: 63.60 million shares | Fiscal year 2013: 52.30 million shares | Fiscal year 2012: 48.35 million shares | Fiscal year 2011: 48.24 million shares | Fiscal year 2010: 46.24 million shares.
• Data sourced from SEC EDGAR public filings as of August 10, 2026.

Last verified: August 10, 2026