Shares outstanding · 2011–2025
Iron Mountain shares outstanding
296M+0.7% · FY2025
Iron Mountain (IRM) reported 296M in shares outstanding for fiscal 2025, +0.7% year on year.
| Fiscal year | Shares outstanding | Change | Filing |
|---|---|---|---|
| FY20252026-02-06 | 296M | +0.7% | Open → |
| FY20242025-02-07 | 294M | +0.5% | Open → |
| FY20232023-12-31 | 292M | +0.5% | Open → |
| FY20222022-12-31 | 291M | +0.4% | Open → |
| FY20212021-12-31 | 290M | +0.5% | Open → |
| FY20202020-12-31 | 288M | +0.3% | Open → |
| FY20192020-02-07 | 287M | +0.3% | Open → |
| FY20182019-02-08 | 286M | +0.4% | Open → |
| FY20172018-02-09 | 285M | +8.2% | Open → |
| FY20162016-12-31 | 264M | +24.8% | Open → |
| FY20152015-12-31 | 211M | +0.7% | Open → |
| FY20142014-12-31 | 210M | +9.6% | Open → |
| FY20132014-02-07 | 192M | +0.7% | Open → |
| FY20122013-02-08 | 190M | +11.1% | Open → |
| FY20112012-02-10 | 171M | — | Open → |
Shares outstanding — Shares outstanding is the number of shares in issue at the reporting date. A falling count usually means the company is buying back stock; a rising one means it is issuing.
Every row links to its own SEC filing · Fiscal year 2025 · Data as of September 25, 2026 · 2011–2025 compound annual growth +4.0%
Shares outstanding at companies of similar size
Cite this page
Ready-made references for the figures on this page, as published on September 25, 2026.
Wikipedia
{{cite web |title=Iron Mountain shares outstanding |url=https://companiesranked.com/en/company/iron-mountain/shares-outstanding |website=CompaniesRanked |date=2026-09-25 |language=en}}APA 7
CompaniesRanked. (September 25, 2026). Iron Mountain shares outstanding. CompaniesRanked. https://companiesranked.com/en/company/iron-mountain/shares-outstandingBibTeX
@misc{companiesranked-en-company-iron-mountain-shares-outstanding-2026,
author = {{CompaniesRanked}},
title = {{Iron Mountain shares outstanding}},
year = {2026},
howpublished = {\url{https://companiesranked.com/en/company/iron-mountain/shares-outstanding}},
note = {Compiled from SEC EDGAR XBRL filings; data as of 2026-09-25},
urldate = {2026-09-25}
}The filing itself
The numbers above are read from this document: 10-K · 0001020569-26-000013 · February 12, 2026
{{cite web |title=Iron Mountain shares outstanding — 10-K (0001020569-26-000013) |url=https://www.sec.gov/Archives/edgar/data/1020569/000102056926000013/irm-20251231.htm |website=SEC EDGAR |publisher=U.S. Securities and Exchange Commission |date=2026-02-12}}The figures are rebuilt with every data refresh, so the reference carries the publication date. Add your own access date if your style requires one.