Iron Mountain Incorporated
US ˙ NYSE ˙ US46284V1017

SecurityIRM / Iron Mountain Incorporated
InstitutionSawyer & Company, Inc
Latest Disclosed Ownership595 shares
Latest Disclosed Value $ 60,773
Sawyer & Company, Inc ownership in IRM / Iron Mountain Incorporated

On April 23, 2026 - Sawyer & Company, Inc filed a 13F-HR form disclosing ownership of 595 shares of Iron Mountain Incorporated (US:IRM) valued at $60,773 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 595 shares of Iron Mountain Incorporated. This represents a change in shares of 0.00% during the quarter. The current value of the position is $76,130 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-04-23 2026-03-31 13F IRON MTN INC COM 46284V101 595 0 0.00 61 22.45 0.0234
2026-02-02 2025-12-31 13F IRON MTN INC COM 46284V101 595 0 0.00 49 0.0175
2025-10-07 2025-09-30 13F IRON MTN INC COM 46284V101 595 0 0.00 0 0.0230
2025-07-09 2025-06-30 13F IRON MTN INC COM 46284V101 595 0 0.00 0 0.0230
2025-04-22 2025-03-31 13F IRON MTN INC COM 46284V101 595 0 0.00 0 0.0206
2025-01-14 2024-12-31 13F IRON MTN INC COM 46284V101 595 -180 -23.23 0 0.0233
2024-10-10 2024-09-30 13F IRON MTN INC COM 46284V101 775 0 0.00 0 0.0340
2024-07-31 2024-06-30 13F IRON MTN INC COM 46284V101 775 0 0.00 0 -100.00 0.0274
2024-04-16 2024-03-31 13F IRON MTN INC COM 46284V101 775 0 0.00 62 0.0248
2024-01-17 2023-12-31 13F IRON MTN INC COM 46284V101 775 -300 -27.91 0 0.0238
2023-10-25 2023-09-30 13F IRON MTN INC COM 46284V101 1,075 0 0.00 0 0.0299
2023-07-13 2023-06-30 13F IRON MTN INC COM 46284V101 1,075 0 0.00 0 0.0279
2023-04-19 2023-03-31 13F IRON MTN INC COM 46284V101 1,075 0 0.00 0 0.0302
2023-01-11 2022-12-31 13F IRON MTN INC COM 46284V101 1,075 0 0.00 0 -100.00 0.0266
2022-10-25 2022-09-30 13F IRON MTN INC COM 46284V101 1,075 0 0.00 47 -9.62 0.0256
2022-07-20 2022-06-30 13F IRON MTN INC COM 46284V101 1,075 -825 -43.42 52 -50.48 0.0264
2022-04-26 2022-03-31 13F IRON MTN INC COM 46284V101 1,900 0 0.00 105 6.06 0.0472
2022-01-14 2021-12-31 13F IRON MTN INC COM 46284V101 1,900 0 0.00 99 19.28 0.0427
2021-11-03 2021-09-30 13F IRON MTN INC COM 46284V101 1,900 300 18.75 83 22.06 0.0391
2021-07-29 2021-06-30 13F IRON MTN INC COM 46284V101 1,600 0 0.00 68 15.25 0.0317
2021-04-22 2021-03-31 13F IRON MTN INC COM 46284V101 1,600 0 0.00 59 25.53 0.0294
2021-01-26 2020-12-31 13F IRON MTN INC COM 46284V101 1,600 -1,600 -50.00 47 -45.35 0.0240
2020-10-20 2020-09-30 13F IRON MTN INC COM 46284V101 3,200 0 0.00 86 2.38 0.0512
2020-07-31 2020-06-30 13F IRON MTN INC COM 46284V101 3,200 0 0.00 84 10.53 0.0520
2020-05-06 2020-03-31 13F IRON MTN INC COM 46284V101 3,200 0 0.00 76 -25.49 0.0606
2020-01-13 2019-12-31 13F IRON MTN INC COM 46284V101 3,200 0 0.00 102 -1.92 0.0657
2019-10-17 2019-09-30 13F IRON MTN INC COM 46284V101 3,200 3,200 104 0.0741
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.