ctrlK

IRM

NYSE

IRON MOUNTAIN INC

Real Estate, Other Specialized REITs

$121.15

close 7 Aug 2026

+35.29%

52-week change

$36.06B

market cap

$77.77
$134.68

52-week range

Current payment

Indicated dividend yield2.85%
Yield, 5-year average3.91%
Last regular payment$0.8640
FrequencyQuarterly
Annualised$3.46

Record

Growth streak3*
Years paying15*
Latest raise+10.06%
Raised on15 Dec 2025
2008–09 change—*

Growth & payout

1-year+17.91%*
3-year+9.14%*
5-year+5.39%*
10-year+5.36%*
20-year—*

Dividends per share by year

Calendar years, split-adjusted

period to 23 Mar 2010

Recent payments

Ex-dateAmountType
15 Jun 2026$0.8640Regular
16 Mar 2026$0.8640Regular
15 Dec 2025$0.8640Regular
15 Sep 2025$0.7850Regular
16 Jun 2025$0.7850Regular
17 Mar 2025$0.7850Regular
16 Dec 2024$0.7150Regular
16 Sep 2024$0.7150Regular
17 Jun 2024$0.6500Regular
14 Mar 2024$0.6500Regular
14 Dec 2023$0.6500Regular
14 Sep 2023$0.6500Regular
14 Jun 2023$0.6190Regular
14 Mar 2023$0.6190Regular
14 Dec 2022$0.6190Regular
14 Sep 2022$0.6190Regular
14 Jun 2022$0.6190Regular
14 Mar 2022$0.6190Regular
14 Dec 2021$0.6190Regular
14 Sep 2021$0.6190Regular
14 Jun 2021$0.6190Regular
12 Mar 2021$0.6190Regular
14 Dec 2020$0.6190Regular
14 Sep 2020$0.6190Regular
12 Jun 2020$0.6190Regular
13 Mar 2020$0.6190Regular
13 Dec 2019$0.6190Regular
13 Sep 2019$0.6110Regular
14 Jun 2019$0.6110Regular
14 Mar 2019$0.6110Regular
14 Dec 2018$0.6110Regular
14 Sep 2018$0.5880Regular
14 Jun 2018$0.5880Regular
14 Mar 2018$0.5880Regular
14 Dec 2017$0.5880Regular
14 Sep 2017$0.5500Regular
13 Jun 2017$0.5500Regular
13 Mar 2017$0.5500Regular
13 Dec 2016$0.5500Regular
8 Sep 2016$0.4850Regular

Special payments are flagged by an auditable heuristic: a payment at least twice its larger neighbour. Regular-only metrics exclude them.