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IRON MOUNTAIN INC reported Common Stock Shares Outstanding of 295.79 million shares for the year ending 2025.
- IRON MOUNTAIN INC showed an increase of +0.7% in Common Stock Shares Outstanding from 2024 to 2025.
- This data is from IRON MOUNTAIN INC's annual report (Form 10-K), filed with the SEC on February 12, 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.
- Over the full 17 years of available data (2009 to 2025), IRON MOUNTAIN INC's Common Stock Shares Outstanding has grown by 45.3%.
- Historical annual values: Fiscal year 2025: 295.79 million shares | Fiscal year 2024: 293.59 million shares | Fiscal year 2023: 292.14 million shares | Fiscal year 2022: 290.83 million shares | Fiscal year 2021: 289.76 million shares | Fiscal year 2020: 288.27 million shares | Fiscal year 2019: 287.30 million shares | Fiscal year 2018: 286.32 million shares | Fiscal year 2017: 283.11 million shares | Fiscal year 2016: 263.68 million shares | Fiscal year 2015: 211.34 million shares | Fiscal year 2014: 209.82 million shares | Fiscal year 2013: 191.43 million shares | Fiscal year 2012: 190.01 million shares | Fiscal year 2011: 172.14 million shares | Fiscal year 2010: 200.06 million shares | Fiscal year 2009: 203.55 million shares.
- Data sourced from SEC EDGAR public filings as of June 20, 2026.
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