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.
• 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 June 22, 2026.

Last verified: June 22, 2026