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IRON MOUNTAIN INC (IRM) Diluted Shares Outstanding (Weighted Average)

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IRON MOUNTAIN INC Diluted Shares Outstanding (Weighted Average)

IRON MOUNTAIN INC (IRM) reported Diluted Shares Outstanding (Weighted Average) of 299.85 million shares for the 3-month period ending 2026-06-30, per its 10-Q filed 2026-08-05.

Financial Statements › Income Statement › Earnings Per Share

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding · last filed 2026-08-05

  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for the quarter ending 2026-06-30 was 299.85M shares, a 1.52% increase year-over-year.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for the quarter ending 2026-03-31 was 298.83M shares, a 0.53% increase year-over-year.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for the quarter ending 2025-12-31 was 298.38M shares, a 0.40% increase year-over-year.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for the quarter ending 2025-09-30 was 297.98M shares, a 1.49% increase year-over-year.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for fiscal 2025 was 297.82M shares, a 0.53% increase from fiscal 2024.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for fiscal 2024 was 296.23M shares, a 0.77% increase from fiscal 2023.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for fiscal 2023 was 293.96M shares, a 0.52% increase from fiscal 2022.
  • IRON MOUNTAIN INC weighted average number of shares outstanding, diluted for fiscal 2022 was 292.44M shares, a 0.50% increase from fiscal 2021.
Period endWeighted Average Number of Shares Outstanding, Diluted 3 monthWeighted Average Number of Shares Outstanding, Diluted 3 month as first filedWeighted Average Number of Shares Outstanding, Diluted 6 monthWeighted Average Number of Shares Outstanding, Diluted 6 month as first filedWeighted Average Number of Shares Outstanding, Diluted 9 monthWeighted Average Number of Shares Outstanding, Diluted 9 month as first filedWeighted Average Number of Shares Outstanding, Diluted 12 monthWeighted Average Number of Shares Outstanding, Diluted 12 month as first filed
2026-06-30299.85M shares
10-Q · filed 2026-08-05
299.34M shares
10-Q · filed 2026-08-05
299.02M shares
derived: average of 3 quarters · filed 2026-08-05
298.76M shares
derived: average of 4 quarters · filed 2026-08-05
2026-03-31298.83M shares
10-Q · filed 2026-04-30
298.61M shares
derived: average of 2 quarters · filed 2026-04-30
298.40M shares
derived: average of 3 quarters · filed 2026-04-30
297.64M shares
derived: average of 4 quarters · filed 2026-08-05
2025-12-31298.38M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-12
298.18M shares
derived: average of 2 quarters · filed 2026-02-12
297.24M shares
derived: average of 3 quarters · filed 2026-08-05
297.82M shares
10-K · filed 2026-02-12
2025-09-30297.98M shares
10-Q · filed 2025-11-05
296.67M shares
derived: average of 2 quarters · filed 2026-08-05
297.63M shares
10-Q · filed 2025-11-05
296.95M shares
derived: average of 4 quarters · filed 2026-08-05
2025-06-30295.36M shares
10-Q · filed 2026-08-05
294.94M shares
10-Q · filed 2026-08-05
296.61M shares
derived: average of 3 quarters · filed 2026-08-05
295.86M shares
derived: average of 4 quarters · filed 2026-08-05
2025-03-31297.26M shares
10-Q · filed 2026-04-30
297.23M shares
derived: average of 2 quarters · filed 2026-04-30
296.02M shares
derived: average of 3 quarters · filed 2026-04-30
295.98M shares
derived: average of 4 quarters · filed 2026-04-30
2024-12-31297.20M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-12
295.40M shares
derived: average of 2 quarters · filed 2026-02-12
295.55M shares
derived: average of 3 quarters · filed 2026-02-12
296.23M shares
10-K · filed 2026-02-12
2024-09-30293.60M shares
10-Q · filed 2025-11-05
294.72M shares
derived: average of 2 quarters · filed 2025-11-05
295.91M shares
10-Q · filed 2025-11-05
294.92M shares
derived: average of 4 quarters · filed 2026-02-12
2024-06-30295.84M shares
10-Q · filed 2025-08-06
295.53M shares
10-Q · filed 2025-08-06
295.36M shares
derived: average of 3 quarters · filed 2026-02-12
295.09M shares
derived: average of 4 quarters · filed 2026-02-12
2024-03-31295.22M shares
10-Q · filed 2025-05-01
295.12M shares
derived: average of 2 quarters · filed 2026-02-12
294.83M shares
derived: average of 3 quarters · filed 2026-02-12
294.51M shares
derived: average of 4 quarters · filed 2026-02-12
2023-12-31295.01M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2026-02-12
294.64M shares
derived: average of 2 quarters · filed 2026-02-12
294.27M shares
derived: average of 3 quarters · filed 2026-02-12
293.96M shares
10-K · filed 2026-02-12
2023-09-30294.27M shares
10-Q · filed 2024-11-06
293.90M shares
derived: average of 2 quarters · filed 2024-11-06
293.62M shares
10-Q · filed 2024-11-06
293.43M shares
derived: average of 4 quarters · filed 2025-02-14
2023-06-30293.53M shares
10-Q · filed 2024-08-01
293.29M shares
10-Q · filed 2024-08-01
293.16M shares
derived: average of 3 quarters · filed 2025-02-14
293.01M shares
derived: average of 4 quarters · filed 2025-02-14
2023-03-31293.05M shares
10-Q · filed 2024-05-02
292.97M shares
derived: average of 2 quarters · filed 2025-02-14
292.83M shares
derived: average of 3 quarters · filed 2025-02-14
292.75M shares
derived: average of 4 quarters · filed 2025-02-14
2022-12-31292.89M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2025-02-14
292.72M shares
derived: average of 2 quarters · filed 2025-02-14
292.64M shares
derived: average of 3 quarters · filed 2025-02-14
292.44M shares
10-K · filed 2025-02-14
2022-09-30292.55M shares
10-Q · filed 2023-11-02
292.52M shares
derived: average of 2 quarters · filed 2023-11-02
292.29M shares
10-Q · filed 2023-11-02
292.17M shares
derived: average of 4 quarters · filed 2024-02-22
2022-06-30292.49M shares
10-Q · filed 2023-08-03
292.17M shares
10-Q · filed 2023-08-03
292.05M shares
derived: average of 3 quarters · filed 2024-02-22
291.91M shares
derived: average of 4 quarters · filed 2024-02-22
2022-03-31291.85M shares
10-Q · filed 2023-05-04
291.83M shares
derived: average of 2 quarters · filed 2024-02-22
291.71M shares
derived: average of 3 quarters · filed 2024-02-22
291.55M shares
derived: average of 4 quarters · filed 2024-02-22
2021-12-31291.81M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2024-02-22
291.65M shares
derived: average of 2 quarters · filed 2024-02-22
291.46M shares
derived: average of 3 quarters · filed 2024-02-22
290.98M shares
10-K · filed 2024-02-22
2021-09-30291.48M shares
10-Q · filed 2022-11-03
291.28M shares
derived: average of 2 quarters · filed 2022-11-03
290.70M shares
10-Q · filed 2022-11-03
290.31M shares
derived: average of 4 quarters · filed 2023-02-23
2021-06-30291.08M shares
10-Q · filed 2022-08-04
290.30M shares
10-Q · filed 2022-08-04
289.92M shares
derived: average of 3 quarters · filed 2023-02-23
289.64M shares
derived: average of 4 quarters · filed 2023-02-23
2021-03-31289.53M shares
8-K · filed 2022-08-04
289.34M shares
derived: average of 2 quarters · filed 2023-02-23
289.17M shares
derived: average of 3 quarters · filed 2023-02-23
288.89M shares
derived: average of 4 quarters · filed 2023-02-23
2020-12-31289.16M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2023-02-23
288.98M shares
derived: average of 2 quarters · filed 2023-02-23
288.68M shares
derived: average of 3 quarters · filed 2023-02-23
288.64M shares
10-K · filed 2023-02-23
2020-09-30288.81M shares
10-Q · filed 2021-11-04
288.44M shares
derived: average of 2 quarters · filed 2021-11-04
288.47M shares
10-Q · filed 2021-11-04
288.33M shares
derived: average of 4 quarters · filed 2022-08-04
2020-06-30288.07M shares
10-Q · filed 2021-08-05
288.30M shares
10-Q · filed 2021-08-05
288.17M shares
derived: average of 3 quarters · filed 2022-08-04
288.05M shares
derived: average of 4 quarters · filed 2022-08-04
2020-03-31288.36M shares
10-Q · filed 2021-05-06
288.22M shares
derived: average of 2 quarters · filed 2022-08-04
288.04M shares
derived: average of 3 quarters · filed 2022-08-04
287.90M shares
derived: average of 4 quarters · filed 2022-08-04
2019-12-31288.08M shares
derived: 8-K 12 month − 10-Q 9 month · filed 2022-08-04
287.89M shares
derived: average of 2 quarters · filed 2022-08-04
287.75M shares
derived: average of 3 quarters · filed 2022-08-04
287.69M shares
8-K · filed 2022-08-04
2019-09-30287.69M shares
10-Q · filed 2020-11-05
287.59M shares
derived: average of 2 quarters · filed 2020-11-05
287.56M shares
10-Q · filed 2020-11-05
287.43M shares
derived: average of 4 quarters · filed 2021-02-24
2019-06-30287.48M shares
10-Q · filed 2020-08-06
287.49M shares
10-Q · filed 2020-08-06
287.35M shares
derived: average of 3 quarters · filed 2021-02-24
287.26M shares
derived: average of 4 quarters · filed 2021-02-24
2019-03-31287.49M shares
10-Q · filed 2020-05-07
287.28M shares
derived: average of 2 quarters · filed 2021-02-24
287.18M shares
derived: average of 3 quarters · filed 2021-02-24
287.03M shares
derived: average of 4 quarters · filed 2021-02-24
2018-12-31287.06M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2021-02-24
287.02M shares
derived: average of 2 quarters · filed 2021-02-24
286.87M shares
derived: average of 3 quarters · filed 2021-02-24
286.65M shares
10-K · filed 2021-02-24
2018-09-30286.98M shares
10-Q · filed 2019-10-31
286.78M shares
derived: average of 2 quarters · filed 2019-10-31
286.52M shares
10-Q · filed 2019-10-31
282.76M shares
derived: average of 4 quarters · filed 2020-02-13
2018-06-30286.57M shares
10-Q · filed 2019-08-01
286.28M shares
10-Q · filed 2019-08-01
281.35M shares
derived: average of 3 quarters · filed 2020-02-13
277.55M shares
derived: average of 4 quarters · filed 2020-02-13
2018-03-31285.99M shares
10-Q · filed 2019-04-25
278.75M shares
derived: average of 2 quarters · filed 2020-02-13
274.54M shares
derived: average of 3 quarters · filed 2020-02-13
272.14M shares
derived: average of 4 quarters · filed 2020-02-13
2017-12-31271.50M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2020-02-13
268.82M shares
derived: average of 2 quarters · filed 2020-02-13
267.52M shares
derived: average of 3 quarters · filed 2020-02-13
266.84M shares
10-K · filed 2020-02-13
266.85M shares
10-K · filed 2018-02-16
2017-09-30266.14M shares
10-Q · filed 2018-10-25
265.53M shares
derived: average of 2 quarters · filed 2018-10-25
265.29M shares
10-Q · filed 2018-10-25
265.10M shares
derived: average of 4 quarters · filed 2019-02-14
2017-06-30264.93M shares
10-Q · filed 2018-07-27
264.87M shares
10-Q · filed 2018-07-27
264.75M shares
derived: average of 3 quarters · filed 2019-02-14
264.69M shares
derived: average of 4 quarters · filed 2019-02-14
2017-03-31264.81M shares
10-Q · filed 2018-04-26
264.66M shares
derived: average of 2 quarters · filed 2019-02-14
264.61M shares
derived: average of 3 quarters · filed 2019-02-14
260.05M shares
derived: average of 4 quarters · filed 2019-02-14
2016-12-31264.51M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2019-02-14
264.51M shares
derived: average of 2 quarters · filed 2019-02-14
258.47M shares
derived: average of 3 quarters · filed 2019-02-14
247.27M shares
10-K · filed 2019-02-14
2016-09-30264.50M shares
10-Q · filed 2017-10-26
255.44M shares
derived: average of 2 quarters · filed 2017-10-26
241.52M shares
10-Q · filed 2017-10-26
233.90M shares
derived: average of 4 quarters · filed 2018-02-16
2016-06-30246.39M shares
10-Q · filed 2017-07-28
230.03M shares
10-Q · filed 2017-07-28
230.03M shares
10-Q · filed 2016-08-04
223.70M shares
derived: average of 3 quarters · filed 2018-02-16
220.75M shares
derived: average of 4 quarters · filed 2018-02-16
2016-03-31212.47M shares
10-Q · filed 2017-04-27
212.47M shares
10-Q · filed 2016-04-28
212.35M shares
derived: average of 2 quarters · filed 2018-02-16
212.21M shares
derived: average of 3 quarters · filed 2018-02-16
212.17M shares
derived: average of 4 quarters · filed 2018-02-16
2015-12-31212.23M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2018-02-16
212.07M shares
derived: average of 2 quarters · filed 2018-02-16
212.07M shares
derived: average of 3 quarters · filed 2018-02-16
212.12M shares
10-K · filed 2018-02-16
212.12M shares
10-K · filed 2016-02-26
2015-09-30211.92M shares
10-Q · filed 2016-11-01
211.92M shares
10-Q · filed 2015-10-30
212.00M shares
derived: average of 2 quarters · filed 2016-11-01
212.08M shares
10-Q · filed 2016-11-01
212.08M shares
10-Q · filed 2015-10-30
210.44M shares
derived: average of 4 quarters · filed 2017-02-23
2015-06-30212.08M shares
10-Q · filed 2016-08-04
212.16M shares
10-Q · filed 2016-08-04
209.94M shares
derived: average of 3 quarters · filed 2017-02-23
206.18M shares
derived: average of 4 quarters · filed 2017-02-23
2015-03-31212.25M shares
10-Q · filed 2016-04-28
212.25M shares
10-Q · filed 2015-04-30
208.87M shares
derived: average of 2 quarters · filed 2017-02-23
204.22M shares
derived: average of 3 quarters · filed 2017-02-23
201.54M shares
derived: average of 4 quarters · filed 2017-02-23
2014-12-31205.50M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2017-02-23
200.20M shares
derived: average of 2 quarters · filed 2017-02-23
197.98M shares
derived: average of 3 quarters · filed 2017-02-23
196.75M shares
10-K · filed 2017-02-23
196.75M shares
10-K · filed 2015-02-27
2014-09-30194.91M shares
10-Q · filed 2015-10-30
194.22M shares
derived: average of 2 quarters · filed 2015-10-30
193.83M shares
10-Q · filed 2015-10-30
193.55M shares
derived: average of 4 quarters · filed 2016-02-26
2014-06-30193.53M shares
10-Q · filed 2015-07-30
193.30M shares
10-Q · filed 2015-07-30
193.10M shares
derived: average of 3 quarters · filed 2016-02-26
192.89M shares
derived: average of 4 quarters · filed 2016-02-26
2014-03-31193.07M shares
10-Q · filed 2015-04-30
193.07M shares
10-Q · filed 2014-05-01
192.89M shares
derived: average of 2 quarters · filed 2016-02-26
192.68M shares
derived: average of 3 quarters · filed 2016-02-26
192.65M shares
derived: average of 4 quarters · filed 2016-02-26
2013-12-31192.70M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2016-02-26
192.49M shares
derived: average of 2 quarters · filed 2016-02-26
192.51M shares
derived: average of 3 quarters · filed 2016-02-26
192.41M shares
10-K · filed 2016-02-26
192.41M shares
10-K · filed 2014-02-28
2013-09-30192.27M shares
10-Q · filed 2014-10-31
192.42M shares
derived: average of 2 quarters · filed 2014-10-31
192.31M shares
10-Q · filed 2014-10-31
189.73M shares
derived: average of 4 quarters · filed 2015-05-07
2013-06-30192.57M shares
10-Q · filed 2014-07-31
192.34M shares
10-Q · filed 2014-07-31
188.88M shares
derived: average of 3 quarters · filed 2015-05-07
184.92M shares
derived: average of 4 quarters · filed 2015-05-07
2013-03-31192.11M shares
10-Q · filed 2014-05-01
187.04M shares
derived: average of 2 quarters · filed 2015-05-07
182.38M shares
derived: average of 3 quarters · filed 2015-05-07
179.84M shares
derived: average of 4 quarters · filed 2015-05-07
2012-12-31181.97M shares
derived: 8-K 12 month − 10-Q 9 month · filed 2015-05-07
177.51M shares
derived: average of 2 quarters · filed 2015-05-07
175.75M shares
derived: average of 3 quarters · filed 2015-05-07
174.87M shares
8-K · filed 2015-05-07
2012-09-30173.05M shares
10-Q · filed 2013-10-31
172.64M shares
derived: average of 2 quarters · filed 2013-10-31
172.50M shares
10-Q · filed 2013-10-31
174.99M shares
derived: average of 4 quarters · filed 2014-05-05
2012-06-30172.23M shares
10-Q · filed 2013-08-01
172.23M shares
10-Q · filed 2013-08-01
175.64M shares
derived: average of 3 quarters · filed 2014-05-05
180.91M shares
derived: average of 4 quarters · filed 2014-05-05
2012-03-31172.22M shares
10-Q · filed 2013-05-02
177.35M shares
derived: average of 2 quarters · filed 2014-05-05
183.80M shares
derived: average of 3 quarters · filed 2014-05-05
188.68M shares
derived: average of 4 quarters · filed 2014-05-05
2011-12-31182.47M shares
derived: 8-K 12 month − 10-Q 9 month · filed 2014-05-05
189.59M shares
derived: average of 2 quarters · filed 2014-05-05
194.17M shares
derived: average of 3 quarters · filed 2014-05-05
195.94M shares
8-K · filed 2014-05-05
2011-09-30196.72M shares
10-Q · filed 2012-11-02
200.01M shares
derived: average of 2 quarters · filed 2012-11-02
200.43M shares
10-Q · filed 2012-11-02
200.35M shares
derived: average of 4 quarters · filed 2013-03-01
2011-06-30203.31M shares
10-Q · filed 2012-08-01
202.28M shares
10-Q · filed 2012-08-01
201.56M shares
derived: average of 3 quarters · filed 2013-03-01
201.48M shares
derived: average of 4 quarters · filed 2013-03-01
2011-03-31201.25M shares
10-Q · filed 2012-05-10
200.69M shares
derived: average of 2 quarters · filed 2013-03-01
200.88M shares
derived: average of 3 quarters · filed 2013-03-01
201.71M shares
derived: average of 4 quarters · filed 2013-03-01
2010-12-31200.13M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2013-03-01
200.69M shares
derived: average of 2 quarters · filed 2013-03-01
201.86M shares
derived: average of 3 quarters · filed 2013-03-01
201.99M shares
10-K · filed 2013-03-01
2010-09-30201.25M shares
10-Q · filed 2011-11-08
202.73M shares
derived: average of 2 quarters · filed 2011-11-08
202.61M shares
10-Q · filed 2011-11-08
203.71M shares
derived: average of 4 quarters · filed 2012-02-28
2010-06-30204.21M shares
10-Q · filed 2011-08-08
204.21M shares
10-Q · filed 2010-08-05
204.46M shares
10-Q · filed 2011-08-08
204.46M shares
10-Q · filed 2010-08-05
204.53M shares
derived: average of 3 quarters · filed 2012-02-28
204.62M shares
derived: average of 4 quarters · filed 2012-02-28
2010-03-31204.71M shares
8-K · filed 2011-09-19
204.69M shares
derived: average of 2 quarters · filed 2012-02-28
204.76M shares
derived: average of 3 quarters · filed 2012-02-28
204.62M shares
derived: average of 4 quarters · filed 2012-02-28
2009-12-31204.68M shares
derived: 10-K 12 month − 10-Q 9 month · filed 2012-02-28
204.79M shares
derived: average of 2 quarters · filed 2012-02-28
204.59M shares
derived: average of 3 quarters · filed 2012-02-28
204.27M shares
10-K · filed 2012-02-28
2009-09-30204.89M shares
10-Q · filed 2010-11-08
204.55M shares
derived: average of 2 quarters · filed 2010-11-08
204.13M shares
10-Q · filed 2010-11-08
2009-06-30204.20M shares
10-Q · filed 2010-08-05
203.76M shares
10-Q · filed 2010-08-05
2009-03-31203.31M shares
10-Q · filed 2010-05-10
2008-12-31203.29M shares
8-K · filed 2011-09-19

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