---
schema_version: "secwatch.filing_event.v1"
accession: "0001020569-25-000035"
form_type: "8-K"
ticker: "IRM"
cik: "0001020569"
company_name: "IRON MOUNTAIN INC"
filed_at: "2025-02-13T23:59:59+00:00"
generated_at: "2026-05-26T21:53:43.863754+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Iron Mountain Q4 revenue $1.58B (+11%), AFFO per share $1.24; raises dividend 10%, issues strong 2025 guidance

## Summary
- Q4 total revenue $1.58B (up 11.4% YoY); storage rental $942M, service $639M; full-year revenue $6.15B (+12.2%).
- Q4 adjusted EBITDA $605M (+15.2% YoY); margin 38.3% (+130 bps); full-year adjusted EBITDA $2.24B (+14%).
- Q4 AFFO $368M ($1.24/share); full-year AFFO $1.34B ($4.54/share), both all-time records.
- FY2025 guidance: revenue $6.65-6.80B (~9% growth), adj. EBITDA $2.475-2.525B (~12% growth), AFFO per share $4.85-4.95.
- Quarterly dividend raised 10% to $0.785/share; payable April 4, 2025 to holders of record March 17, 2025.

## SEC filing metadata
- accession: 0001020569-25-000035
- form_type: 8-K
- ticker: IRM
- cik: 0001020569
- company_name: IRON MOUNTAIN INC
- filed_at: 2025-02-13T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/0001020569-25-000035-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1020569/000102056925000035/irm-20250213.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001020569-25-000035
- JSON: https://secwatch.observer/filing/0001020569-25-000035.json
- Plain text: https://secwatch.observer/filing/0001020569-25-000035.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.