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BIOGEN INC. reported Common Stock Shares Outstanding of 146.80 million shares for the year ending 2025.
- BIOGEN INC. showed an increase of +0.7% in Common Stock Shares Outstanding from 2024 to 2025.
- This data is from BIOGEN INC.'s annual report (Form 10-K), filed with the SEC on February 6, 2026.
- XBRL data for this metric is available from 2008 to 2025 (7 years of filings). Earlier data may not exist in machine-readable XBRL format as companies adopted electronic filing at different times.
- Over the full 7 years of available data (2008 to 2025), BIOGEN INC.'s Common Stock Shares Outstanding has declined by 49.0%.
- Historical annual values: Fiscal year 2025: 146.80 million shares | Fiscal year 2024: 145.80 million shares | Fiscal year 2023: 144.90 million shares | Fiscal year 2022: 144.00 million shares | Fiscal year 2021: 147.00 million shares | Fiscal year 2009: 274.86 million shares | Fiscal year 2008: 288.05 million shares.
- Data sourced from SEC EDGAR public filings as of June 22, 2026.
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