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IRON MOUNTAIN INC (IRM) — Shares Outstanding

Annual figures by fiscal year, from SEC filings.

2008: 203.29M2009: 204.27M2010: 201.99M2011: 195.94M2012: 174.87M2013: 192.41M2014: 196.75M2015: 212.12M2016: 247.27M2017: 266.84M2018: 286.65M2019: 287.69M2020: 288.64M2021: 290.98M2022: 292.44M2023: 293.96M2024: 296.23M2025: 297.82M297.82M
2008Shares Outstanding (shares)2025
Fiscal YearShares OutstandingChange YoY
2025297.82M+0.5%
2024296.23M+0.8%
2023293.96M+0.5%
2022292.44M+0.5%
2021290.98M+0.8%
2020288.64M+0.3%
2019287.69M+0.4%
2018286.65M+7.4%
2017266.84M+7.9%
2016247.27M+16.6%
2015212.12M+7.8%
2014196.75M+2.3%
2013192.41M+10.0%
2012174.87M-10.8%
2011195.94M-3.0%
2010201.99M-1.1%
2009204.27M+0.5%
2008203.29M—