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>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-05-07 09:00 am Sale | 2026-04-30 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 14,555,629 4.890% | -4,550,911![]() (-23.82%) | Filing History |
| 2026-04-30 11:13 am Purchase | 2026-03-31 | 13G | IRON MOUNTAIN INC IRM | VANGUARD CAPITAL MANAGEMENT LLC | 21,872,303 7.350% | 21,872,303![]() (New Position) | Filing History |
| 2026-04-29 2:10 pm Purchase | 2026-03-31 | 13G | IRON MOUNTAIN INC IRM | Vanguard Portfolio Management | 25,051,135 8.420% | 25,051,135![]() (New Position) | Filing History |
| 2026-03-27 09:55 am Sale | 2026-03-13 | 13G | IRON MOUNTAIN INC IRM | VANGUARD GROUP INC | 0 0.000% | -46,275,110![]() (Position Closed) | Filing History |
| 2026-02-13 08:30 am Purchase | 2025-12-31 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 19,106,540 6.460% | 3,076,578![]() (+19.19%) | Filing History |
| 2025-11-14 06:40 am Purchase | 2025-09-30 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 16,029,962 5.430% | 3,241,189![]() (+25.34%) | Filing History |
| 2025-03-07 09:16 am Sale | 2025-02-28 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 12,788,773 4.350% | -5,257,730![]() (-29.13%) | Filing History |
| 2024-11-14 11:28 am Sale | 2024-09-30 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 18,046,503 6.150% | -4,862,982![]() (-21.23%) | Filing History |
| 2024-10-17 09:41 am Purchase | 2024-09-30 | 13G | IRON MOUNTAIN INC IRM | STATE STREET CORPORATION STT | 16,568,963 5.700% | 16,568,963![]() (New Position) | Filing History |
| 2024-09-10 12:08 pm Purchase | 2024-08-31 | 13G | IRON MOUNTAIN INC IRM | BlackRock Inc. BLK | 29,851,678 10.200% | 6,579,362![]() (+28.27%) | Filing History |
| 2024-02-14 09:16 am Purchase | 2023-12-31 | 13G | IRON MOUNTAIN INC IRM | Cohen & Steers, Inc. CNS | 22,909,485 7.850% | 22,909,485![]() (New Position) | Filing History |
| 2024-02-13 5:08 pm Sale | 2023-12-29 | 13G | IRON MOUNTAIN INC IRM | VANGUARD GROUP INC | 46,275,110 15.850% | -1,154,814![]() (-2.43%) | Filing History |
| 2024-01-26 11:49 am Purchase | 2023-12-31 | 13G | IRON MOUNTAIN INC IRM | BlackRock Inc. BLK | 23,272,316 8.000% | 654,139![]() (+2.89%) | Filing History |
| 2023-12-11 06:19 am Sale | 2023-12-11 | 13G | IRON MOUNTAIN INC IRM | Capital World Investors | 4,616,827 1.600% | -20,871,347![]() (-81.89%) | Filing History |
| 2023-02-13 2:49 pm Sale | 2023-02-14 | 13G | IRON MOUNTAIN INC IRM | Capital World Investors | 25,488,174 8.800% | -7,225,586![]() (-22.09%) | Filing History |
| 2023-02-09 11:22 am Sale | 2022-12-30 | 13G | IRON MOUNTAIN INC IRM | VANGUARD GROUP INC | 47,429,924 16.310% | -1,002,233![]() (-2.07%) | Filing History |
| 2023-01-30 4:03 pm Sale | 2022-12-31 | 13G | IRON MOUNTAIN INC IRM | BlackRock Inc. BLK | 22,618,177 7.800% | -379,919![]() (-1.65%) | Filing History |
| 2022-02-11 2:48 pm Purchase | 2022-02-14 | 13G | IRON MOUNTAIN INC IRM | Capital World Investors | 32,713,760 11.300% | 3,600,597![]() (+12.37%) | Filing History |
| 2022-02-10 08:22 am Purchase | 2021-12-31 | 13G | IRON MOUNTAIN INC IRM | VANGUARD GROUP INC | 48,432,157 16.730% | 68,768![]() (+0.14%) | Filing History |
| 2022-02-01 5:14 pm Purchase | 2021-12-31 | 13G | IRON MOUNTAIN INC IRM | BlackRock Inc. BLK | 22,998,096 7.900% | 420,272![]() (+1.86%) | Filing History |

