As of May 23, 2026, Iron Mountain's top three insider holders are Kent P Dauten (Director, 1.21Mn shares), Barry Hytinen (Evp And Cfo, 326.62K shares), Clark H Bailey (Director, 242.45K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Kent P Dauten | - | 1,207,681 | 0 | 02 Jun, 2025 |
| Monte E Ford | - | 29,925 | 0 | 02 Jun, 2025 |
| Clark H Bailey | - | 242,455 | 0 | 03 Jul, 2025 |
| Walter C Rakowich | - | 36,515 | 0 | 05 Jun, 2025 |
| Deirdre Evens | Evp Gm, Asset Lifestyle Mgmt | 67,687 | 0 | 31 Mar, 2022 |
| Christie B. Kelly | - | 1,308 | 0 | 21 Nov, 2025 |
| Pamela M Arway | - | 40,196 | 0 | 02 Jun, 2025 |
| John Tomovcsik | Evp, Chief Operating Officer | 14,000 | 0 | 21 Aug, 2024 |
| June Yee Felix | - | 2,991 | 0 | 02 Jun, 2025 |
| Barry Hytinen | Evp And Cfo | 326,623 | 0 | 03 Mar, 2026 |
| Jennifer Allerton | - | 11,541 | 0 | 03 Mar, 2026 |
| Edward Baker-Greene | Evp, Chro | 8,216 | 0 | 07 Jun, 2023 |
| Wendy J. Murdock | - | 14,829 | 0 | 18 Sep, 2024 |
| Theodore R. Ii Samuels | - | 2,264 | 0 | 18 Jul, 2023 |
| Deborah Marson | Evp, General Counsel, Sec. | 59,686 | 0 | 04 Sep, 2024 |
| Daniel Borges | Svp Chief Accounting Officer | 7,189 | 0 | 03 Mar, 2026 |
| Mark Kidd | Evp, Gm Data Centers Alm | 125,507 | 0 | 02 Apr, 2026 |
| Greg W Mcintosh | Evp, Chief Commercial Officer | 85,634 | 0 | 03 Mar, 2026 |
| Robin Matlock | - | 28,559 | 0 | 22 Jan, 2026 |
| Andre Maciel | - | 1,627 | 0 | 24 Jul, 2024 |
| Michelle Vervais Altamura | Evp, General Counsel, Sec. | 7,728 | 0 | 03 Mar, 2026 |
| Mithu Bhargava | Evp, Gm Digital Business Unit | 16,054 | 0 | 23 Mar, 2026 |
| Jemma Johns | Evp, Chro | 965 | 0 | 06 Jan, 2026 |
* 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.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 06 Apr, 2026 | Theodore R. Ii Samuels | Phantom Stock | A | 350 | $103.61 | 11,406 | D | A |
| 06 Apr, 2026 | Doyle Simons | Phantom Stock | A | 380 | $103.52 | 45,874 | D | A |
| 06 Apr, 2026 | Theodore R. Ii Samuels | Phantom Stock | A | 92 | $103.52 | 11,498 | D | A |
| 01 Apr, 2026 | Mark Kidd | Common Stock, par value $.01 per share | D | 6,000 | $102.71 | 125,507 | D | S |
| 01 Apr, 2026 | Mark Kidd | Common Stock, par value $.01 per share | D | 6,000 | $102.71 | 125,507 | D | S |
| 01 Apr, 2026 | William L Meaney | Common Stock, par value $.01 per share | A | 38,474 | $37.00 | 38,474 | D | M |
| 01 Apr, 2026 | Mark Kidd | Common Stock, par value $.01 per share | D | 6,000 | $102.71 | 125,507 | D | S |
| 01 Apr, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 38,474 | $102.71 | 0 | D | S |
| 01 Apr, 2026 | William L Meaney | Employee Stock Option (Right to Buy) | D | 38,474 | - | 307,792 | D | M |
| 19 Mar, 2026 | Mithu Bhargava | Common Stock, par value $.01 per share | D | 14,260 | $104.25 | 61,519 | D | S |
| 19 Mar, 2026 | Mithu Bhargava | Common Stock, par value $.01 per share | D | 12,537 | $105.04 | 48,982 | D | S |
| 19 Mar, 2026 | Mithu Bhargava | Common Stock, par value $.01 per share | D | 20 | $105.64 | 48,962 | D | S |
| 19 Mar, 2026 | Mithu Bhargava | Common Stock, par value $.01 per share | D | 20,462 | $104.30 | 28,500 | D | S |
| 19 Mar, 2026 | Mithu Bhargava | Common Stock, par value $.01 per share | D | 12,446 | $105.13 | 16,054 | D | S |
| 05 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 26,278 | $105.26 | 72,379 | D | S |
| 05 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 34,358 | $106.15 | 38,021 | D | S |
| 05 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 38,021 | $107.02 | 0 | D | S |
| 03 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 23,590 | $105.25 | 272,385 | D | S |
| 03 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 18,360 | $106.33 | 254,025 | D | S |
| 03 Mar, 2026 | William L Meaney | Common Stock, par value $.01 per share | D | 30,940 | $107.43 | 223,085 | D | S |