Iron Mountain Inc

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Iron Mountain Inc
TickerIRM
CIK #0001020569
CUSIP462846106
SectorEnergy & Transportation - Public Warehousing & Storage
Address745 Atlantic Avenue, Boston, MA 02111
Source [EDGAR]
CIK Filing 2011 - 2026
[0001020569] 10-K
[0001020569] 10-Q
[0001020569] 3
[0001020569] 4
[0001020569] 5
[0001020569] 8-K
[0001020569] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Vanguard Capital Management LLC Iron Mountain Inc [2026-04-30] 0.0
Vanguard Portfolio Management LLC Iron Mountain Inc [2026-04-29] 0.0
Cohen & Steers Inc Iron Mountain Inc [2025-11-14] 0.0
State Street Corp Iron Mountain Inc [2024-10-17] 5.7
Cohen & Steers Inc Iron Mountain Inc [2024-02-14] 7.85
Capital International Investors Iron Mountain Inc [2016-02-12] 6.9
Price T Rowe Associates Inc /MD/ Iron Mountain Inc [2016-02-12] 7.0
BlackRock Inc Iron Mountain Inc [2016-01-28] 6.3
Parnassus Investments /CA Iron Mountain Inc [2015-02-12] 5.03
Vanguard Specialized Funds Iron Mountain Inc [2015-02-06] 5.8
BlackRock Inc Iron Mountain Inc [2015-02-02] 6.2
Vanguard Group Inc Iron Mountain Inc [2014-02-11] 6.07
Capital World Investors Iron Mountain Inc [2012-11-09] 10.7
Highfields Capital Management LP Iron Mountain Inc [2012-08-02] 5.4
Janus Capital Management LLC Iron Mountain Inc [2012-02-14] 7.2
BlackRock Inc Iron Mountain Inc [2012-02-09] 5.05
Vanguard Group Inc Iron Mountain Inc [2012-02-08] 5.94
Form 3/4/5 Filer 2011 - 2026
Simons Doyle
Iron Mountain Inc
Samuels Theodore R II
Meaney William L
Kidd Mark
Borges Daniel
Rakowich Walter C
Arway Pamela M
Dauten Kent P
Matlock Robin
Kelly Christie B
Felix June Yee
Allerton Jennifer
Ford Monte E
Bhargava Mithu
McIntosh Greg W
Altamura Michelle Vervais
Hytinen Barry
Johns Jemma
Bailey Clark H
Baker-Greene Edward
Murdock Wendy J
Marson Deborah
Tomovcsik John
Maciel Andre
Hwang Wing Cheung
Verrecchia Alfred J
Evens Deirdre
Halvorsen KRIS
Cloutier Ernest W
Deninger Paul F
Antenucci Ted R
Russo Fidelma
Keddy Patrick J
Brown Stuart B
MacLean Theodore
Bicks Edward
Jeffries Emma
Allen Peter A
Fox Raymond
Sweeney Eileen
Chatfield Neil
Duale Marc A
Tsolakis Anastasios
Day Roderick
Lamach Michael W
Drapeau Anne S
Ryan Vincent J
Little Arthur D
Ebbighausen Harold E
Tucker Laurie Anne
McKeon Brian P
Reese C Richard
Loren Allan Z
Insider Transaction (Form 3/4/5) Date Action Shares Price Value ($)
Bhargava Mithu
Common Stock, par value $.01 per share
2026-03-19 Sell 12,446 $105.13 1,308,448
Bhargava Mithu
Common Stock, par value $.01 per share
2026-03-19 Sell 20,462 $104.30 2,134,187
Bhargava Mithu
Common Stock, par value $.01 per share
2026-03-19 Sell 14,260 $104.25 1,486,605
Bhargava Mithu
Common Stock, par value $.01 per share
2026-03-19 Sell 20 $105.64 2,113
Bhargava Mithu
Common Stock, par value $.01 per share
2026-03-19 Sell 12,537 $105.04 1,316,886
Meaney William L
Common Stock, par value $.01 per share
2026-03-05 Sell 38,021 $107.02 4,069,007
Meaney William L
Common Stock, par value $.01 per share
2026-03-05 Sell 26,278 $105.26 2,766,022
Meaney William L
Common Stock, par value $.01 per share
2026-03-05 Sell 34,358 $106.15 3,647,102
Meaney William L
Common Stock, par value $.01 per share
2026-03-04 Sell 27,688 $106.96 2,961,508
Meaney William L
Common Stock, par value $.01 per share
2026-03-04 Sell 70,971 $107.52 7,630,802
Meaney William L
Common Stock, par value $.01 per share
2026-03-03 Sell 30,940 $107.43 3,323,884
Meaney William L
Common Stock, par value $.01 per share
2026-03-03 Sell 23,590 $105.25 2,482,848
Meaney William L
Common Stock, par value $.01 per share
2026-03-03 Sell 25,769 $107.94 2,781,506
Meaney William L
Common Stock, par value $.01 per share
2026-03-03 Sell 18,360 $106.33 1,952,219
Meaney William L
Common Stock, par value $.01 per share
2026-03-02 Sell 3,200 $110.74 354,368
Meaney William L
Employee Stock Option (Right to Buy) · derivative
2026-03-02 Option exercise 38,474
Meaney William L
Common Stock, par value $.01 per share
2026-03-02 Sell 37,296 $109.07 4,067,875
Meaney William L
Common Stock, par value $.01 per share
2026-03-02 Sell 16,457 $108.91 1,792,332
Meaney William L
Common Stock, par value $.01 per share
2026-03-02 Sell 2,076 $107.95 224,104
Meaney William L
Common Stock, par value $.01 per share
2026-03-02 Sell 1,824 $110.64 201,807
showing 20 of 200 most recent transactions
13F Ownership Over TimeHoldersShares Held
2026-03-31 1,092 235,659,302
2025-12-31 1,014 233,973,709
2025-09-30 1,023 230,569,710
2025-06-30 1,046 231,567,604
2025-03-31 996 227,822,112
2024-12-31 1,068 216,631,479
2024-09-30 1,065 220,899,611
2024-06-30 978 219,189,778
2024-03-31 948 214,589,127
2023-12-31 905 209,286,510
2023-09-30 837 215,594,372
2023-06-30 823 215,814,918
Form 13F Holdings
Firm Period DFND Voting Shares
Swedbank AB [2026-06-30] DFND 287,064 287,064
Commonwealth of Pennsylvania Public School Empls Retrmt SYS [2026-06-30] SOLE 286,428 286,428
Tectonic Advisors LLC [2026-06-30] OTR 0 160,175
VERT Asset Management LLC [2026-06-30] DFND 0 154,450
Brookstone Capital Management [2026-06-30] SOLE 0 146,595
Czech National Bank [2026-06-30] SOLE 84,687 84,687
Salem Investment Counselors Inc [2026-06-30] SOLE 57,302 77,154
QRG Capital Management Inc [2026-06-30] SOLE 71,225 71,225
PensionDanmark Pensionsforsikringsaktieselskab [2026-06-30] SOLE 0 68,465
Woodstock Corp [2026-06-30] SOLE 63,102 65,102
Wealth Enhancement Advisory Services LLC [2026-06-30] SOLE 2,093 61,836
Intact Investment Management Inc [2026-06-30] SOLE 61,700 61,700
Foresight Capital Management Advisors Inc [2026-06-30] SOLE 0 59,644
Hennion & Walsh Asset Management Inc [2026-06-30] SOLE 56,304 56,304
Werlinich Asset Management LLC [2026-06-30] SOLE 0 51,982
Pensionfund PDN [2026-06-30] SOLE 0 42,500
Spirit of America Management Corp/Ny [2026-06-30] SOLE 0 38,650
Yousif Capital Management LLC [2026-06-30] SOLE 7,996 38,277
Gradient Investments LLC [2026-06-30] SOLE 0 29,602
Avanza Fonder AB [2026-06-30] SOLE 28,747 28,747
Burney CO/ [2026-06-30] SOLE 0 25,564
Alaska Retirement Management Board [2026-06-30] SOLE 176,638 23,502
Nepsis Inc [2026-06-30] SOLE 0 22,032
Pensionfund Sabic [2026-06-30] SOLE 0 20,300
Merit Financial Group LLC [2026-06-30] SOLE 21 17,707
Kentucky Trust Co [2026-06-30] SOLE 17,465 17,465
RFG Advisory LLC [2026-06-30] SOLE 1,000 16,910
Hartford Investment Management Co [2026-06-30] SOLE 16,354 16,354
Crossmark Global Holdings Inc [2026-06-30] SOLE 15,990 15,990
Royal Fund Management LLC [2026-06-30] SOLE 15,471 15,471
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