IRON MOUNTAIN INC (IRM) - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
Time period
Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-05-07
09:00 am
Sale
2026-04-3013GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
14,555,629
4.890%
-4,550,911decrease
(-23.82%)
Filing
History
2026-04-30
11:13 am
Purchase
2026-03-3113GIRON MOUNTAIN INC
IRM
VANGUARD CAPITAL MANAGEMENT LLC21,872,303
7.350%
21,872,303increase
(New Position)
Filing
History
2026-04-29
2:10 pm
Purchase
2026-03-3113GIRON MOUNTAIN INC
IRM
Vanguard Portfolio Management25,051,135
8.420%
25,051,135increase
(New Position)
Filing
History
2026-03-27
09:55 am
Sale
2026-03-1313GIRON MOUNTAIN INC
IRM
VANGUARD GROUP INC0
0.000%
-46,275,110decrease
(Position Closed)
Filing
History
2026-02-13
08:30 am
Purchase
2025-12-3113GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
19,106,540
6.460%
3,076,578increase
(+19.19%)
Filing
History
2025-11-14
06:40 am
Purchase
2025-09-3013GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
16,029,962
5.430%
3,241,189increase
(+25.34%)
Filing
History
2025-03-07
09:16 am
Sale
2025-02-2813GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
12,788,773
4.350%
-5,257,730decrease
(-29.13%)
Filing
History
2024-11-14
11:28 am
Sale
2024-09-3013GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
18,046,503
6.150%
-4,862,982decrease
(-21.23%)
Filing
History
2024-10-17
09:41 am
Purchase
2024-09-3013GIRON MOUNTAIN INC
IRM
STATE STREET CORPORATION
STT
16,568,963
5.700%
16,568,963increase
(New Position)
Filing
History
2024-09-10
12:08 pm
Purchase
2024-08-3113GIRON MOUNTAIN INC
IRM
BlackRock Inc.
BLK
29,851,678
10.200%
6,579,362increase
(+28.27%)
Filing
History
2024-02-14
09:16 am
Purchase
2023-12-3113GIRON MOUNTAIN INC
IRM
Cohen & Steers, Inc.
CNS
22,909,485
7.850%
22,909,485increase
(New Position)
Filing
History
2024-02-13
5:08 pm
Sale
2023-12-2913GIRON MOUNTAIN INC
IRM
VANGUARD GROUP INC46,275,110
15.850%
-1,154,814decrease
(-2.43%)
Filing
History
2024-01-26
11:49 am
Purchase
2023-12-3113GIRON MOUNTAIN INC
IRM
BlackRock Inc.
BLK
23,272,316
8.000%
654,139increase
(+2.89%)
Filing
History
2023-12-11
06:19 am
Sale
2023-12-1113GIRON MOUNTAIN INC
IRM
Capital World Investors4,616,827
1.600%
-20,871,347decrease
(-81.89%)
Filing
History
2023-02-13
2:49 pm
Sale
2023-02-1413GIRON MOUNTAIN INC
IRM
Capital World Investors25,488,174
8.800%
-7,225,586decrease
(-22.09%)
Filing
History
2023-02-09
11:22 am
Sale
2022-12-3013GIRON MOUNTAIN INC
IRM
VANGUARD GROUP INC47,429,924
16.310%
-1,002,233decrease
(-2.07%)
Filing
History
2023-01-30
4:03 pm
Sale
2022-12-3113GIRON MOUNTAIN INC
IRM
BlackRock Inc.
BLK
22,618,177
7.800%
-379,919decrease
(-1.65%)
Filing
History
2022-02-11
2:48 pm
Purchase
2022-02-1413GIRON MOUNTAIN INC
IRM
Capital World Investors32,713,760
11.300%
3,600,597increase
(+12.37%)
Filing
History
2022-02-10
08:22 am
Purchase
2021-12-3113GIRON MOUNTAIN INC
IRM
VANGUARD GROUP INC48,432,157
16.730%
68,768increase
(+0.14%)
Filing
History
2022-02-01
5:14 pm
Purchase
2021-12-3113GIRON MOUNTAIN INC
IRM
BlackRock Inc.
BLK
22,998,096
7.900%
420,272increase
(+1.86%)
Filing
History