IRM — Iron Mtn Inc Del Institutional Holders · Q3 2026
Who owns Iron Mtn Inc Del (IRM)? 45 institutions reported holding $57.57M in SEC 13F filings for Q3 2026 (period ended 2026-09-30). Largest holders: Border to Coast Pensions Partnership Ltd ($26.6M), Werlinich Asset Management, LLC ($5.8M), Pensionfund DSM Netherlands ($4.5M).
Source: SEC Form 13F filings · as of 2026-09-30