Number of shares outstanding for Iron Mountain (IRM)

Number of shares outstanding as of December 2025 : 295,771,000

According to Iron Mountain's latest financial reports and stock price the company's current number of shares outstanding is 295,771,000. At the end of 2025 the company had 295,771,000 shares outstanding. The number of outstanding shares is usually impacted by stock plits and shares buy back.

Shares outstanding history for Iron Mountain from 2014 to 2025

Shares Outstanding at the end of each year

Year	Shares Outstanding	Change
2025	0.29 B	0.68%
2024	0.29 B	0.56%
2023	0.29 B	0.42%
2022	0.29 B	0.3%
2021	0.29 B	0.57%
2020	0.28 B	0.4%
2019	0.28 B	0.39%
2018	0.28 B	7.9%
2017	0.26 B	0.73%
2016	0.26 B	24.82%
2015	0.21 B	9.08%
2014	0.19 B

Shares Outstanding for similar companies or competitors

Company	Shares Outstanding	differencediff.	Country
Equifax EFX	123,100,000	-58.38%	🇺🇸 USA
Cintas CTAS	403,292,000	36.35%	🇺🇸 USA
Automatic Data Processing ADP	405,100,000	36.96%	🇺🇸 USA
Pitney Bowes PBI	168,908,000	-42.89%	🇺🇸 USA
Dun & Bradstreet DNB	435,358,541	47.19%	🇺🇸 USA
Fiserv FI	540,200,000	82.64%	🇺🇸 USA
Tradeweb TW	213,359,090	-27.86%	🇺🇸 USA
Moody's MCO	178,900,000	-39.51%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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