Iron Mountain Inc (IRM) Insider Ownership

Historic Insider Ownership Trends

According to recent filings covering the 90 days ending February 19, 2026, the three most significant insider holders at Iron Mountain are Director Kent P Dauten (1.21Mn shares), Director Clark H Bailey (242.45K shares), Evp And Cfo Barry Hytinen (198.52K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Kent P Dauten 1,207,681 02 Jun, 2025
Clark H Bailey 242,455 03 Jul, 2025
Barry Hytinen Evp And Cfo 198,518 04 Mar, 2025
Ernest W Cloutier Evp & Gm And Rim 75,097 25 May, 2021
Deirdre Evens Evp & Gm And Asset Lifestyle Mgmt 67,687 31 Mar, 2022
Walter C Rakowich 61,980 05 Jun, 2025
Deborah Marson Evp And General Counsel And Sec. 59,686 04 Sep, 2024
Mark Kidd Evp And Gm Data Centers & Alm 55,081 06 Jan, 2026
Pamela M Arway 40,196 02 Jun, 2025
Kris Halvorsen 34,458 25 Jun, 2021
Monte E Ford 29,925 02 Jun, 2025
Robin Matlock 28,559 22 Jan, 2026
Jennifer Allerton 18,541 02 Jun, 2025
Greg W Mcintosh Evp And Cco & Gm And Global Rm 18,107 05 Aug, 2025
Wendy J. Murdock 14,829 18 Sep, 2024
John Tomovcsik Evp And Chief Operating Officer 14,000 21 Aug, 2024
Mithu Bhargava Evp And Gm Digital Business Unit 13,054 04 Mar, 2025
Edward Baker-Greene Evp And Chro 6,859 20 Dec, 2024
Michelle Vervais Altamura Evp And General Counsel And Sec. 5,752 06 Jan, 2026
June Yee Felix 2,991 02 Jun, 2025
Theodore R. Ii Samuels 2,264 18 Jul, 2023
Andre Maciel 1,627 24 Jul, 2024
Christie B. Kelly 1,308 21 Nov, 2025
Jemma Johns Evp And Chro 965 06 Jan, 2026
Daniel Borges Svp & Chief Accounting Officer 288 04 Mar, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
21 Jan, 2026 Robin Matlock Common Stock, par value $.01 per share A 10 $0.00 28,559 D M
02 Jan, 2026 William L Meaney Common Stock, par value $.01 per share D 12,673 $83.54 0 D S
02 Jan, 2026 William L Meaney Common Stock, par value $.01 per share D 25,809 $82.99 12,673 D S
02 Jan, 2026 William L Meaney Common Stock, par value $.01 per share A 38,482 $37.00 38,482 D M
02 Jan, 2026 Mark Kidd Common Stock, par value $.01 per share D 6,000 $83.10 55,081 D S
02 Jan, 2026 Robin Matlock Common Stock, par value $.01 per share A 998 $0.00 28,549 D M
02 Jan, 2026 Michelle Vervais Altamura Common Stock, par value $.01 per share D 469 $83.24 5,752 D F
02 Jan, 2026 Michelle Vervais Altamura Common Stock, par value $.01 per share A 1,214 $0.00 6,221 D M
02 Jan, 2026 Jemma Johns Common Stock, par value $.01 per share A 1,909 $0.00 1,909 D M
02 Jan, 2026 Jemma Johns Common Stock, par value $.01 per share D 944 $83.24 965 D F
01 Dec, 2025 William L Meaney Common Stock, par value $.01 per share A 69,125 $36.59 69,125 D M
01 Dec, 2025 William L Meaney Common Stock, par value $.01 per share D 10,569 $83.93 0 D S
01 Dec, 2025 William L Meaney Common Stock, par value $.01 per share D 58,556 $83.23 10,569 D S
01 Dec, 2025 Mark Kidd Common Stock, par value $.01 per share D 6,000 $85.00 61,081 D S
19 Nov, 2025 Christie B. Kelly Common Stock, par value $.01 per share A 33 $89.52 1,308 D P
03 Nov, 2025 William L Meaney Common Stock, par value $.01 per share D 10,828 $103.69 0 D S
03 Nov, 2025 William L Meaney Common Stock, par value $.01 per share D 35,678 $102.92 10,828 D S
03 Nov, 2025 William L Meaney Common Stock, par value $.01 per share D 22,619 $102.02 46,506 D S
03 Nov, 2025 William L Meaney Common Stock, par value $.01 per share A 69,125 $36.59 69,125 D M
03 Nov, 2025 Mark Kidd Common Stock, par value $.01 per share D 6,000 $102.51 67,081 D S