---
schema_version: "secwatch.filing_event.v1"
accession: "0001020569-21-000253"
form_type: "8-K"
ticker: "IRM"
cik: "0001020569"
company_name: "IRON MOUNTAIN INC"
filed_at: "2021-12-10T23:59:59+00:00"
generated_at: "2026-06-28T01:57:15.291860+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Iron Mountain board member Dr. Per-Kristian Halvorsen retires effective Dec 7, 2021

## Summary
- Dr. Per-Kristian Halvorsen retired from the board of directors on December 7, 2021.
- Retirement was for personal reasons, not due to any disagreement with the company.
- No replacement named; board size reduced by one.

## SEC filing metadata
- accession: 0001020569-21-000253
- form_type: 8-K
- ticker: IRM
- cik: 0001020569
- company_name: IRON MOUNTAIN INC
- filed_at: 2021-12-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1020569/000102056921000253/0001020569-21-000253-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1020569/000102056921000253/irm-20211207.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001020569-21-000253
- JSON: https://secwatch.observer/filing/0001020569-21-000253.json
- Plain text: https://secwatch.observer/filing/0001020569-21-000253.txt

## Key facts
- Executive change
  Dr. Per-Kristian Halvorsen retired as director at IRON MOUNTAIN INC.
  - Action: retired
  - Role: director
  source text: On December 7, 2021, Dr. Per-Kristian Halvorsen informed the board of directors, or the Board, of Iron Mountain Incorporated, or the Company, that he will retire from the Board for personal reasons, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1020569/000102056921000253/0001020569-21-000253-index.htm

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