Iron Mountain's three largest insider shareholders as of September 09, 2026 are Kent P Dauten (Director, 1.21Mn shares), Barry Hytinen (Evp And Cfo, 326.62K shares), Clark H Bailey (Director, 242.45K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kent P Dauten | Director | 1,209,573 | 0 | 1,209,573 | 53.2% | 11 May, 2026 |
| 2 | Barry Hytinen | Evp And Cfo | 326,623 | 0 | 326,623 | 14.4% | 03 Mar, 2026 |
| 3 | Clark H Bailey | Director | 242,455 | 0 | 242,455 | 10.7% | 03 Jul, 2025 |
| 4 | Mark Kidd | Evp, Gm Data Centers Alm | 95,507 | 0 | 95,507 | 4.2% | 02 Sep, 2026 |
| 5 | Greg W Mcintosh | Evp, Chief Commercial Officer | 75,634 | 0 | 75,634 | 3.3% | 02 Sep, 2026 |
| 6 | Deirdre Evens | Evp Gm, Asset Lifestyle Mgmt | 67,687 | 0 | 67,687 | 3.0% | 31 Mar, 2022 |
| 7 | Deborah Marson | Evp, General Counsel, Sec. | 59,686 | 0 | 59,686 | 2.6% | 04 Sep, 2024 |
| 8 | Pamela M Arway | Director | 40,196 | 0 | 40,196 | 1.8% | 02 Jun, 2025 |
| 9 | Monte E Ford | Director | 31,817 | 0 | 31,817 | 1.4% | 11 May, 2026 |
| 10 | Robin Matlock | Director | 30,451 | 0 | 30,451 | 1.3% | 11 May, 2026 |
| 11 | Mithu Bhargava | Evp, Gm Digital Business Unit | 16,054 | 0 | 16,054 | 0.7% | 23 Mar, 2026 |
| 12 | Edward Baker-Greene | Evp, Chro | 15,075 | 0 | 15,075 | 0.7% | 20 Dec, 2024 |
| 13 | Wendy J. Murdock | Director | 14,829 | 0 | 14,829 | 0.7% | 18 Sep, 2024 |
| 14 | John Tomovcsik | Evp, Chief Operating Officer | 14,000 | 0 | 14,000 | 0.6% | 21 Aug, 2024 |
| 15 | Jennifer Allerton | Director | 13,300 | 0 | 13,300 | 0.6% | 11 May, 2026 |
| 16 | Michelle Vervais Altamura | Evp, General Counsel, Sec. | 7,728 | 0 | 7,728 | 0.3% | 03 Mar, 2026 |
| 17 | June Yee Felix | Director | 4,883 | 0 | 4,883 | 0.2% | 11 May, 2026 |
| 18 | Christie B. Kelly | Director | 3,211 | 0 | 3,211 | 0.1% | 11 May, 2026 |
| 19 | Theodore R. Ii Samuels | Director | 2,264 | 0 | 2,264 | 0.1% | 18 Jul, 2023 |
| 20 | Andre Maciel | Director | 1,627 | 0 | 1,627 | 0.1% | 24 Jul, 2024 |
| 21 | Walter C Rakowich | Director | 1,135 | 0 | 1,135 | 0.0% | 21 May, 2026 |
| 22 | Jemma Johns | Evp, Chro | 965 | 0 | 965 | 0.0% | 06 Jan, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 07 Aug, 2026 | Mark Kidd | Evp, Gm Data Centers Alm | Disposed S | 6,000 | $122.70 | $736.20K | 101,507 | Direct |
| 07 Aug, 2026 | William L Meaney | President And Ceo | Acquired M | 38,474 | $37.00 | $1.42Mn | 38,474 | Direct |
| 06 Aug, 2026 | Greg W Mcintosh | Evp, Chief Commercial Officer | Disposed S | 5,000 | $127.13 | $635.65K | 80,634 | Direct |
| 07 Aug, 2026 | William L Meaney | President And Ceo | Disposed S | 18,780 | $121.10 | $2.27Mn | 19,694 | Direct |
| 06 Aug, 2026 | Greg W Mcintosh | Evp, Chief Commercial Officer | Acquired M | 6,839 | $37.00 | $253.04K | 87,473 | Direct |
| 06 Aug, 2026 | Greg W Mcintosh | Evp, Chief Commercial Officer | Disposed S | 6,839 | $127.13 | $869.44K | 80,634 | Direct |
| 07 Aug, 2026 | William L Meaney | President And Ceo | Disposed S | 16,785 | $122.11 | $2.05Mn | 2,909 | Direct |
| 06 Aug, 2026 | Greg W Mcintosh | Evp, Chief Commercial Officer | Disposed M | 6,839 | — | — | 0 | Direct |
| 07 Aug, 2026 | William L Meaney | President And Ceo | Disposed S | 2,909 | $122.75 | $357.08K | 0 | Direct |
| 07 Aug, 2026 | William L Meaney | President And Ceo | Disposed M | 38,474 | — | — | 153,896 | Direct |
| 06 Jul, 2026 | Doyle Simons | Director | Acquired A | 339 | $116.79 | $39.63K | 46,213 | Direct |
| 06 Jul, 2026 | Theodore R. Ii Samuels | Director | Acquired A | 99 | $116.79 | $11.57K | 13,800 | Direct |
| 02 Jul, 2026 | Theodore R. Ii Samuels | Director | Acquired A | 311 | $116.61 | $36.25K | 13,701 | Direct |
| 01 Jul, 2026 | Mark Kidd | Evp, Gm Data Centers Alm | Disposed S | 6,000 | $125.62 | $753.72K | 107,507 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Acquired M | 38,474 | $37.00 | $1.42Mn | 38,474 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Disposed S | 17,514 | $121.81 | $2.13Mn | 20,960 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Disposed S | 9,656 | $122.84 | $1.19Mn | 11,304 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Disposed S | 7,173 | $123.84 | $888.30K | 4,131 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Disposed S | 1,601 | $124.72 | $199.68K | 2,530 | Direct |
| 01 Jul, 2026 | William L Meaney | President And Ceo | Disposed S | 2,530 | $125.82 | $318.32K | 0 | Direct |