Common Stock, Shares, Issued of IRON MOUNTAIN INC from 31 Mar 2010 to 31 Dec 2025

Taxonomy & unit
us-gaap: shares
Description
Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.
Summary
IRON MOUNTAIN INC quarterly Common Stock, Shares, Issued in shares history and change rate from 31 Mar 2010 to 31 Dec 2025.
  • IRON MOUNTAIN INC Common Stock, Shares, Issued for the quarter ending 31 Dec 2025 was 295,788,645, a 0.75% increase year-over-year.
Source SEC data
View on sec.gov
Common Stock, Shares, Issued, Quarterly (shares)
Common Stock, Shares, Issued, YoY Quarterly Change (%)

IRON MOUNTAIN INC Quarterly Common Stock, Shares, Issued (shares)

Period Value YoY Chg Change % Date Report Filed Fiscal Year Fiscal Period
Q4 2025 295,788,645 +2,196,008 +0.75% 31 Dec 2025 10-K 12 Feb 2026 2025 FY
Q3 2025 295,504,799 +2,079,534 +0.71% 30 Sep 2025 10-Q 05 Nov 2025 2025 Q3
Q2 2025 295,271,945 +1,973,480 +0.67% 30 Jun 2025 10-Q 06 Aug 2025 2025 Q2
Q1 2025 294,968,740 +1,883,057 +0.64% 31 Mar 2025 10-Q 01 May 2025 2025 Q1
Q4 2024 293,592,637 +1,449,898 +0.5% 31 Dec 2024 10-K 12 Feb 2026 2025 FY
Q3 2024 293,425,265 +1,497,858 +0.51% 30 Sep 2024 10-Q 06 Nov 2024 2024 Q3
Q2 2024 293,298,465 +1,473,507 +0.5% 30 Jun 2024 10-Q 01 Aug 2024 2024 Q2
Q1 2024 293,085,683 +1,500,684 +0.52% 31 Mar 2024 10-Q 02 May 2024 2024 Q1
Q4 2023 292,142,739 +1,312,443 +0.45% 31 Dec 2023 10-K 14 Feb 2025 2024 FY
Q3 2023 291,927,407 +1,239,465 +0.43% 30 Sep 2023 10-Q 02 Nov 2023 2023 Q3
Q2 2023 291,824,958 +1,145,000 +0.39% 30 Jun 2023 10-Q 03 Aug 2023 2023 Q2
Q1 2023 291,584,999 +1,034,559 +0.36% 31 Mar 2023 10-Q 04 May 2023 2023 Q1
Q4 2022 290,830,296 +1,073,235 +0.37% 31 Dec 2022 10-K 22 Feb 2024 2023 FY
Q3 2022 290,687,942 +1,141,796 +0.39% 30 Sep 2022 10-Q 03 Nov 2022 2022 Q3
Q2 2022 290,679,958 +1,221,190 +0.42% 30 Jun 2022 10-Q 04 Aug 2022 2022 Q2
Q1 2022 290,550,440 +1,822,693 +0.63% 31 Mar 2022 8-K 04 Aug 2022
Q4 2021 289,757,061 +1,484,012 +0.52% 31 Dec 2021 10-K 23 Feb 2023 2022 FY
Q3 2021 289,546,146 +1,383,180 +0.48% 30 Sep 2021 10-Q 04 Nov 2021 2021 Q3
Q2 2021 289,458,768 +1,316,065 +0.46% 30 Jun 2021 10-Q 05 Aug 2021 2021 Q2
Q1 2021 288,727,747 +848,605 +0.3% 31 Mar 2021 10-Q 06 May 2021 2021 Q1
Q4 2020 288,273,049 +973,404 +0.34% 31 Dec 2020 8-K 04 Aug 2022
Q3 2020 288,162,966 +1,027,772 +0.36% 30 Sep 2020 10-Q 05 Nov 2020 2020 Q3
Q2 2020 288,142,703 +1,080,934 +0.38% 30 Jun 2020 10-Q 06 Aug 2020 2020 Q2
Q1 2020 287,879,142 +1,049,288 +0.37% 31 Mar 2020 10-Q 07 May 2020 2020 Q1
Q4 2019 287,299,645 +978,636 +0.34% 31 Dec 2019 10-K 24 Feb 2021 2020 FY
Q3 2019 287,135,194 +914,136 +0.32% 30 Sep 2019 10-Q 31 Oct 2019 2019 Q3
Q2 2019 287,061,769 +962,542 +0.34% 30 Jun 2019 10-Q 01 Aug 2019 2019 Q2
Q1 2019 286,829,854 +906,449 +0.32% 31 Mar 2019 10-Q 25 Apr 2019 2019 Q1
Q4 2018 286,321,009 +3,210,826 +1.1% 31 Dec 2018 10-K 13 Feb 2020 2019 FY
Q3 2018 286,221,058 +19,338,776 +7.2% 30 Sep 2018 10-Q 25 Oct 2018 2018 Q3
Q2 2018 286,099,227 +21,719,619 +8.2% 30 Jun 2018 10-Q 27 Jul 2018 2018 Q2
Q1 2018 285,923,405 +21,813,017 +8.3% 31 Mar 2018 10-Q 26 Apr 2018 2018 Q1
Q4 2017 283,110,183 +19,427,513 +7.4% 31 Dec 2017 10-K 14 Feb 2019 2018 FY
Q3 2017 266,882,282 +3,457,270 +1.3% 30 Sep 2017 10-Q 26 Oct 2017 2017 Q3
Q2 2017 264,379,608 +1,356,568 +0.52% 30 Jun 2017 10-Q 28 Jul 2017 2017 Q2
Q1 2017 264,110,388 +52,217,634 +25% 31 Mar 2017 10-Q 27 Apr 2017 2017 Q1
Q4 2016 263,682,670 +52,342,374 +25% 31 Dec 2016 10-K 16 Feb 2018 2017 FY
Q3 2016 263,425,012 +52,341,265 +25% 30 Sep 2016 10-Q 01 Nov 2016 2016 Q3
Q2 2016 263,023,040 +52,224,520 +25% 30 Jun 2016 10-Q 04 Aug 2016 2016 Q2
Q1 2016 211,892,754 +1,365,517 +0.65% 31 Mar 2016 10-Q 28 Apr 2016 2016 Q1
Q4 2015 211,340,296 +1,521,484 +0.72% 31 Dec 2015 10-K 23 Feb 2017 2016 FY
Q3 2015 211,083,747 +17,405,153 +9% 30 Sep 2015 10-Q 30 Oct 2015 2015 Q3
Q2 2015 210,798,520 +17,805,676 +9.2% 30 Jun 2015 10-Q 30 Jul 2015 2015 Q2
Q1 2015 210,527,237 +18,606,308 +9.7% 31 Mar 2015 10-Q 30 Apr 2015 2015 Q1
Q4 2014 209,818,812 +18,391,892 +9.6% 31 Dec 2014 10-K 26 Feb 2016 2015 FY
Q3 2014 193,678,594 +2,465,734 +1.3% 30 Sep 2014 10-Q 31 Oct 2014 2014 Q3
Q2 2014 192,992,844 +1,883,139 +0.98% 30 Jun 2014 10-Q 31 Jul 2014 2014 Q2
Q1 2014 191,920,929 +1,309,064 +0.69% 31 Mar 2014 10-Q 01 May 2014 2014 Q1
Q4 2013 191,426,920 +1,421,132 +0.75% 31 Dec 2013 8-K 07 May 2015
Q3 2013 191,212,860 +19,079,713 +11% 30 Sep 2013 10-Q 31 Oct 2013 2013 Q3
Q2 2013 191,109,705 +19,474,428 +11% 30 Jun 2013 10-Q 01 Aug 2013 2013 Q2
Q1 2013 190,611,865 +19,429,467 +11% 31 Mar 2013 10-Q 02 May 2013 2013 Q1
Q4 2012 190,005,788 +17,864,822 +10% 31 Dec 2012 8-K 05 May 2014 2013 FY
Q3 2012 172,133,147 -14,482,783 -7.8% 30 Sep 2012 10-Q 02 Nov 2012 2012 Q3
Q2 2012 171,635,277 -31,236,166 -15% 30 Jun 2012 10-Q 01 Aug 2012 2012 Q2
Q1 2012 171,182,398 -29,075,717 -15% 31 Mar 2012 10-Q 10 May 2012 2012 Q1
Q4 2011 172,140,966 -27,923,100 -14% 31 Dec 2011 10-K 01 Mar 2013 2012 FY
Q3 2011 186,615,930 -13,816,903 -6.9% 30 Sep 2011 10-Q 08 Nov 2011 2011 Q3
Q2 2011 202,871,443 +895,793 +0.44% 30 Jun 2011 10-Q 08 Aug 2011 2011 Q2
Q1 2011 200,258,115 -3,173,734 -1.6% 31 Mar 2011 8-K 19 Sep 2011 2011 Q1
Q4 2010 200,064,066 31 Dec 2010 10-K 28 Feb 2012 2011 FY
Q3 2010 200,432,833 30 Sep 2010 10-Q 08 Nov 2010 2010 Q3
Q2 2010 201,975,650 30 Jun 2010 10-Q 05 Aug 2010 2010 Q2
Q1 2010 203,431,849 31 Mar 2010 10-Q 10 May 2010 2010 Q1
* An asterisk sign (*) next to the value indicates that the value is likely invalid.