IRMNYSEReal Estate Investment TrustsFiscal year ends December 31
IRON MOUNTAIN INC
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 5, 2026
$111.55−0.96 (-0.85%)
Close on Oct 19, 2026
- Market cap
- $33.45B
- P/E (TTM)
- 79.7
- Dividend yield
- 2.89%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
86.4%
257M of 298M shares
Institutional holders
1,167
153 new, 61 sold out
Net institutional buying
4M
In Q2 2026
Insider trades, 12 months
1 buys · 70 sales
Net sold $112.77M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 29,851,678 | 10.20% | 13G (passive) amendment | Aug 31, 2024 |
| Vanguard Portfolio Management | 25,051,135 | 8.42% | 13G (passive) | Mar 31, 2026 |
| Vanguard Capital Management | 21,872,303 | 7.35% | 13G (passive) | Mar 31, 2026 |
| State Street Corporation | 16,568,963 | 5.70% | 13G (passive) | Sep 30, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of IRM | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 33,570,910 | 11.28% | $4.24B | +549,556 | 0.06% |
| Vanguard Portfolio Management LLC | 25,568,944 | 8.59% | $3.23B | +553,387 | 0.15% |
| Vanguard Capital Management LLC | 18,953,705 | 6.37% | $2.39B | +194,816 | 0.05% |
| State Street Corp | 17,634,044 | 5.92% | $2.24B | +82,411 | 0.07% |
| Cohen & Steers, Inc. | 12,019,735 | 4.04% | $1.52M | −4,149,606 | 2.40% |
| Geode Capital Management, LLC | 8,649,249 | 2.91% | $1.09B | +163,122 | 0.06% |
| FMR LLC | 7,872,365 | 2.64% | $994.36M | +387,967 | 0.04% |
| Dimensional Fund Advisors LP | 4,625,684 | 1.55% | $584.31M | +73,398 | 0.11% |
| Morgan Stanley | 4,426,922 | 1.49% | $559.16M | −225,325 | 0.03% |
| Principal Financial Group Inc | 4,373,424 | 1.47% | $552.40M | −192,669 | 0.27% |
| Charles Schwab Investment Management Inc | 4,263,487 | 1.43% | $538.52M | +250,480 | 0.07% |
| Northern Trust Corp | 4,222,967 | 1.42% | $533.40M | +72,481 | 0.06% |
| Norges Bank | 4,214,697 | 1.42% | $532.36M | New | 0.05% |
| Invesco Ltd. | 4,065,649 | 1.37% | $513.53M | +144,128 | 0.04% |
| Legal & General Group Plc | 3,244,741 | 1.09% | $409.84M | +109,667 | 0.09% |
| UBS Asset Management Americas Inc | 3,193,560 | 1.07% | $403.38M | +3,182,834 | 0.07% |
| Deutsche Bank AG\ | 3,049,079 | 1.02% | $385.13M | −43,005 | 0.11% |
| Goldman Sachs Group Inc | 2,822,732 | 0.95% | $356.54M | +606,060 | 0.03% |
| Centersquare Investment Management LLC | 2,323,974 | 0.78% | $293.54M | +13,929 | 2.51% |
| Nuveen, LLC | 2,218,771 | 0.75% | $280.25M | +150,363 | 0.07% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 1,167 | 257M | 86.4% | 153 / 448 | 380 / 61 | 19M | 15M |
| Q1 2026 | 1,089 | 253M | 85.1% | 179 / 399 | 350 / 92 | 63M | 21M |
| Q4 2025 | 1,008 | 259M | 86.9% | 121 / 326 | 409 / 106 | 23M | 16M |
| Q3 2025 | 1,015 | 253M | 84.9% | 75 / 369 | 394 / 89 | 18M | 17M |
| Q2 2025 | 1,043 | 251M | 84.4% | 121 / 393 | 355 / 62 | 21M | 14M |
| Q1 2025 | 993 | 245M | 82.4% | 88 / 349 | 401 / 144 | 27M | 16M |
| Q4 2024 | 1,065 | 238M | 79.8% | 139 / 365 | 408 / 107 | 13M | 20M |
| Q3 2024 | 1,052 | 245M | 82.4% | 163 / 322 | 416 / 65 | 45M | 22M |
| Q2 2024 | 965 | 250M | 84.0% | 104 / 328 | 374 / 62 | 23M | 19M |
| Q1 2024 | 936 | 247M | 82.9% | 126 / 310 | 328 / 70 | 18M | 11M |
| Q4 2023 | 890 | 240M | 80.5% | 135 / 278 | 345 / 64 | 33M | 23M |
| Q3 2023 | 831 | 230M | 77.2% | 88 / 290 | 315 / 66 | 19M | 14M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of IRM | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Real Estate Index Fund | 11,316,264 | 3.80% | $1.38B | 1.89% | Jul 31, 2026 |
| Vanguard Total Stock Market Index Fund | 8,973,757 | 3.01% | $1.13B | 0.05% | Jun 30, 2026 |
| Vanguard 500 Index Fund | 7,712,258 | 2.59% | $974.14M | 0.06% | Jun 30, 2026 |
| Vanguard Mid-Cap Index Fund | 6,124,379 | 2.06% | $773.57M | 0.35% | Jun 30, 2026 |
| iShares Core S&P 500 ETF | 4,092,633 | 1.37% | $516.94M | 0.06% | Jun 30, 2026 |
| Fidelity 500 Index Fund | 3,785,804 | 1.27% | $485.53M | 0.06% | May 31, 2026 |
| Vanguard Value Index Fund | 2,687,689 | 0.90% | $339.48M | 0.13% | Jun 30, 2026 |
| State Street(R) Real Estate Select Sector SPDR(R) ETF | 2,496,740 | 0.84% | $315.36M | 3.89% | Jun 30, 2026 |
| Cohen & Steers Institutional Realty Shares | 2,209,655 | 0.74% | $279.10M | 3.12% | Jun 30, 2026 |
| Vanguard Mid-Cap Growth Index Fund | 2,165,376 | 0.73% | $273.51M | 0.79% | Jun 30, 2026 |
| Schwab U.S. REIT ETF | 2,092,821 | 0.70% | $268.40M | 2.69% | May 31, 2026 |
| Cohen & Steers Realty Shares | 2,013,960 | 0.68% | $254.38M | 3.12% | Jun 30, 2026 |
| Vanguard Real Estate Ii Index Fund | 1,986,067 | 0.67% | $242.94M | 2.22% | Jul 31, 2026 |
| Cohen & Steers Real Estate Securities Fund | 1,969,515 | 0.66% | $248.77M | 2.60% | Jun 30, 2026 |
| Vanguard Institutional Index Fund | 1,615,309 | 0.54% | $204.03M | 0.06% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| William L. Meaney | President and CEO, Director | 295,650 | 0.10% | Sep 2, 2026 |
| Greg W. McIntosh | EVP, Chief Commercial Officer | 75,634 | 0.03% | Sep 2, 2026 |
| Mark Kidd | EVP, GM Data Centers & ALM | 95,507 | 0.03% | Sep 2, 2026 |
| Daniel Borges | SVP & Chief Accounting Officer | 0 | – | May 26, 2026 |
| Mithu Bhargava | EVP, GM Digital Business Unit | 16,054 | 0.01% | Mar 23, 2026 |
| Michelle Vervais Altamura | EVP, General Counsel, Sec. | 7,012 | 0.00% | Mar 3, 2026 |
| Barry Hytinen | EVP and CFO | 326,623 | 0.11% | Mar 3, 2026 |
| Jemma Johns | EVP, CHRO | 965 | 0.00% | Jan 6, 2026 |
| Edward Baker-Greene | EVP, CHRO | 6,859 | 0.00% | Dec 20, 2024 |
| Doyle Simons | Director | 1,892 | 0.00% | Jul 7, 2026 |
| Theodore R. Samuels II | Director | 21,059 | 0.01% | Jul 7, 2026 |
| Walter C. Rakowich | Director | 25,000 | 0.01% | May 21, 2026 |
| Pamela M. Arway | Director | 40,196 | 0.01% | May 13, 2026 |
| June Yee Felix | Director | 4,883 | 0.00% | May 11, 2026 |
| Robin Matlock | Director | 30,451 | 0.01% | May 11, 2026 |
| Kent P. Dauten | Director | 1,209,573 | 0.41% | May 11, 2026 |
| Christie B. Kelly | Director | 3,211 | 0.00% | May 11, 2026 |
| Monte E. Ford | Director | 31,817 | 0.01% | May 11, 2026 |
| Jennifer Allerton | Director | 13,433 | 0.00% | May 11, 2026 |
| Clark H. Bailey | Director | 254,864 | 0.09% | Jul 3, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Mark Kidd EVP, GM Data Centers & ALM | Sep 1, 2026 | Sale(10b5-1 plan) | −6,000 | $115.60 | $693.60K | 95,507 |
| William L. Meaney President and CEO, Director | Sep 1, 2026 | Sale(10b5-1 plan) | −89 | $116.00 | $10.32K | 0 |
| William L. Meaney President and CEO, Director | Sep 1, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| William L. Meaney President and CEO, Director | Sep 1, 2026 | Sale(10b5-1 plan) | −11,332 | $113.45 | $1.29M | 27,142 |
| William L. Meaney President and CEO, Director | Sep 1, 2026 | Sale(10b5-1 plan) | −20,952 | $114.14 | $2.39M | 6,190 |
| William L. Meaney President and CEO, Director | Sep 1, 2026 | Sale(10b5-1 plan) | −6,101 | $115.00 | $701.62K | 89 |
| Greg W. McIntosh EVP, Chief Commercial Officer | Sep 1, 2026 | Sale(10b5-1 plan) | −5,000 | $115.60 | $578.00K | 75,634 |
| Mark Kidd EVP, GM Data Centers & ALM | Aug 7, 2026 | Sale(10b5-1 plan) | −6,000 | $122.70 | $736.20K | 101,507 |
| William L. Meaney President and CEO, Director | Aug 7, 2026 | Sale(10b5-1 plan) | −16,785 | $122.11 | $2.05M | 2,909 |
| William L. Meaney President and CEO, Director | Aug 7, 2026 | Sale(10b5-1 plan) | −2,909 | $122.75 | $357.08K | 0 |
| William L. Meaney President and CEO, Director | Aug 7, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| William L. Meaney President and CEO, Director | Aug 7, 2026 | Sale(10b5-1 plan) | −18,780 | $121.10 | $2.27M | 19,694 |
| Greg W. McIntosh EVP, Chief Commercial Officer | Aug 6, 2026 | Sale(10b5-1 plan) | −6,839 | $127.13 | $869.44K | 80,634 |
| Greg W. McIntosh EVP, Chief Commercial Officer | Aug 6, 2026 | Option exercise | +6,839 | $37.00 | $253.04K | 87,473 |
| Greg W. McIntosh EVP, Chief Commercial Officer | Aug 6, 2026 | Sale(10b5-1 plan) | −5,000 | $127.13 | $635.65K | 80,634 |
| Mark Kidd EVP, GM Data Centers & ALM | Jul 1, 2026 | Sale(10b5-1 plan) | −6,000 | $125.62 | $753.72K | 107,507 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Sale(10b5-1 plan) | −9,656 | $122.84 | $1.19M | 11,304 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Sale(10b5-1 plan) | −7,173 | $123.84 | $888.30K | 4,131 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Sale(10b5-1 plan) | −17,514 | $121.81 | $2.13M | 20,960 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Sale(10b5-1 plan) | −2,530 | $125.82 | $318.32K | 0 |
| William L. Meaney President and CEO, Director | Jul 1, 2026 | Sale(10b5-1 plan) | −1,601 | $124.72 | $199.68K | 2,530 |
| Mark Kidd EVP, GM Data Centers & ALM | Jun 1, 2026 | Sale(10b5-1 plan) | −6,000 | $126.70 | $760.20K | 113,507 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −1,091 | $129.66 | $141.46K | 0 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −9,247 | $129.14 | $1.19M | 1,091 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −10,156 | $126.20 | $1.28M | 28,318 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −10,457 | $127.00 | $1.33M | 17,861 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| William L. Meaney President and CEO, Director | Jun 1, 2026 | Sale(10b5-1 plan) | −7,523 | $127.90 | $962.19K | 10,338 |
| Daniel Borges SVP & Chief Accounting Officer | May 21, 2026 | Sale(10b5-1 plan) | −7,189 | $125.50 | $902.22K | 0 |
| Walter C. Rakowich Director | May 20, 2026 | Sale(10b5-1 plan) | −757 | $124.45 | $94.21K | 1,135 |
| Pamela M. Arway Director | May 12, 2026 | Sale(10b5-1 plan) | −1,892 | $128.97 | $244.01K | 40,196 |
| William L. Meaney President and CEO, Director | May 8, 2026 | Sale(10b5-1 plan) | −23,598 | $129.19 | $3.05M | 0 |
| William L. Meaney President and CEO, Director | May 8, 2026 | Sale(10b5-1 plan) | −14,876 | $128.52 | $1.91M | 23,598 |
| William L. Meaney President and CEO, Director | May 8, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| Mark Kidd EVP, GM Data Centers & ALM | May 8, 2026 | Sale(10b5-1 plan) | −6,000 | $127.91 | $767.46K | 119,507 |
| Kent P. Dauten Director | May 7, 2026 | Award | +1,892 | – | – | 1,209,573 |
| Walter C. Rakowich Director | May 7, 2026 | Award | +1,892 | – | – | 1,892 |
| Christie B. Kelly Director | May 7, 2026 | Award | +1,892 | – | – | 3,211 |
| Pamela M. Arway Director | May 7, 2026 | Award | +1,892 | – | – | 42,088 |
| Robin Matlock Director | May 7, 2026 | Award | +1,892 | – | – | 30,451 |
| Monte E. Ford Director | May 7, 2026 | Award | +1,892 | – | – | 31,817 |
| Doyle Simons Director | May 7, 2026 | Award | +1,892 | – | – | 1,892 |
| Jennifer Allerton Director | May 7, 2026 | Award | +1,892 | – | – | 13,433 |
| Jennifer Allerton Director | May 7, 2026 | Tax withholding | −133 | $126.81 | $16.87K | 13,300 |
| June Yee Felix Director | May 7, 2026 | Award | +1,892 | – | – | 4,883 |
| Walter C. Rakowich Director | May 1, 2026 | Gift | −1,600 | – | – | 23,865 |
| William L. Meaney President and CEO, Director | Apr 1, 2026 | Option exercise | +38,474 | $37.00 | $1.42M | 38,474 |
| William L. Meaney President and CEO, Director | Apr 1, 2026 | Sale(10b5-1 plan) | −38,474 | $102.71 | $3.95M | 0 |
| Mark Kidd EVP, GM Data Centers & ALM | Apr 1, 2026 | Sale(10b5-1 plan) | −6,000 | $102.71 | $616.26K | 125,507 |
| Mithu Bhargava EVP, GM Digital Business Unit | Mar 19, 2026 | Sale(10b5-1 plan) | −12,446 | $105.13 | $1.31M | 16,054 |
| Mithu Bhargava EVP, GM Digital Business Unit | Mar 19, 2026 | Sale(10b5-1 plan) | −20,462 | $104.30 | $2.13M | 28,500 |
| Mithu Bhargava EVP, GM Digital Business Unit | Mar 19, 2026 | Sale(10b5-1 plan) | −20 | $105.64 | $2.11K | 48,962 |
| Mithu Bhargava EVP, GM Digital Business Unit | Mar 19, 2026 | Sale(10b5-1 plan) | −12,537 | $105.04 | $1.32M | 48,982 |
| Mithu Bhargava EVP, GM Digital Business Unit | Mar 19, 2026 | Sale(10b5-1 plan) | −14,260 | $104.25 | $1.49M | 61,519 |
| William L. Meaney President and CEO, Director | Mar 5, 2026 | Sale(10b5-1 plan) | −38,021 | $107.02 | $4.07M | 0 |
| William L. Meaney President and CEO, Director | Mar 5, 2026 | Sale(10b5-1 plan) | −34,358 | $106.15 | $3.65M | 38,021 |
| William L. Meaney President and CEO, Director | Mar 5, 2026 | Sale(10b5-1 plan) | −26,278 | $105.26 | $2.77M | 72,379 |
| William L. Meaney President and CEO, Director | Mar 4, 2026 | Sale(10b5-1 plan) | −27,688 | $106.96 | $2.96M | 169,628 |
| William L. Meaney President and CEO, Director | Mar 4, 2026 | Sale(10b5-1 plan) | −70,971 | $107.52 | $7.63M | 98,657 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Greg W. McIntosh Officer | Oct 1, 2026 | 5,000 | $553.60K | Oct 1, 2026 | Restricted Stock Vesting |
| William L. Meaney Officer, Director | Oct 1, 2026 | 38,474 | $4.26M | Oct 1, 2026 | Stock Option Exercise |
| Greg W. McIntosh Officer | Sep 1, 2026 | 5,000 | $578.00K | Sep 1, 2026 | Restricted Stock Vesting |
| William L. Meaney Officer, Director | Sep 1, 2026 | 38,474 | $4.45M | Sep 1, 2026 | Stock Option Exercise |
| Mark Kidd Officer | Sep 1, 2026 | 6,000 | $693.60K | Sep 1, 2026 | Restricted Stock Vesting |
| William L. Meaney Officer, Director | Aug 7, 2026 | 38,474 | $4.72M | Aug 7, 2026 | Stock Option Exercise |
| Mark Kidd Officer | Aug 7, 2026 | 6,000 | $736.20K | Aug 7, 2026 | Restricted Stock Vesting |
| Greg W. McIntosh Officer | Aug 6, 2026 | 11,839 | $1.51M | Aug 6, 2026 | Restricted Stock Vesting |
| Mark Kidd Officer | Jul 1, 2026 | 6,000 | $753.72K | Jul 1, 2026 | Restricted Stock Vesting |
| William L. Meaney Officer, Director | Jul 1, 2026 | 38,474 | $4.83M | Jul 1, 2026 | Stock Option Exercise |
| Mark Kidd Officer | Jun 1, 2026 | 6,000 | $760.20K | Jun 1, 2026 | Restricted Stock Vesting |
| William L. Meaney Officer, Director | Jun 1, 2026 | 38,474 | $4.87M | Jun 1, 2026 | Option Granted - 02/16/2017 |
| Daniel Borges Officer | May 21, 2026 | 7,189 | $902.22K | May 21, 2026 | Restricted Stock Vesting |
| Walter C. Rakowich Director | May 20, 2026 | 757 | $94.21K | May 20, 2026 | Restricted Stock Vesting |
| Pamela M. Arway Director | May 12, 2026 | 1,892 | $244.01K | May 12, 2026 | Restricted Stock Vesting |