Iron Mountain Inc SEC filings IRM
Iron Mountain Inc has 1,013 filings in SEC EDGAR's recent list, going back to Feb 20, 2019. Its latest annual report, Form ARS, was filed on Mar 24, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| DEFA14A | Additional proxy material | Mar 24, 2026 | — |
| DEF 14A | Proxy statement | Mar 24, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 18, 2025 | — |
| DEF 14A | Proxy statement | Apr 18, 2025 | May 29, 2025 |
| DEFA14A | Additional proxy material | Apr 19, 2024 | — |
| DEF 14A | Proxy statement | Apr 19, 2024 | Dec 31, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 8, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Mar 30, 2023 | — |
| DEF 14A | Proxy statement | Mar 30, 2023 | — |
| DEFA14A | Additional proxy material | Mar 31, 2022 | — |
| DEF 14A | Proxy statement | Mar 31, 2022 | May 10, 2022 |
| DEFA14A | Additional proxy material | Apr 2, 2021 | — |
| DEF 14A | Proxy statement | Apr 2, 2021 | May 12, 2021 |
| DEFA14A | Additional proxy material | Apr 3, 2020 | — |
| DEF 14A | Proxy statement | Apr 3, 2020 | May 13, 2020 |
| DEFA14A | Additional proxy material | May 14, 2019 | — |
| DEFA14A | Additional proxy material | Apr 11, 2019 | — |
| DEF 14A | Proxy statement | Apr 11, 2019 | May 22, 2019 |
Showing 18 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Real Estate Investment Trusts (SIC 6798)
- Listed as
- IRM (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Portsmouth, NH
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1020569
- Former names
- IRON MOUNTAIN INC/PA (until Jun 9, 2005); PIERCE LEAHY CORP (until Feb 16, 1999)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.