SEC Form 4 · Updated Daily
IRM
— IRON MOUNTAIN INCORPORATED OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| RYAN VINCENT J | Director | 3,795,895.35 | 2014-09-15 | G |
| DAUTEN KENT P | Director | 1,209,573 | 2026-05-07 | A |
| Hytinen Barry | Director | 431,495 | 2026-03-01 | M |
| REESE C RICHARD | Director | 399,164 | 2013-03-11 | A |
| KENNY JOHN F JR | Director | 242,991 | 2007-05-04 | S |
| BAILEY CLARK H | Director | 242,454.99 | 2025-07-01 | M |
| Cloutier Ernest W | Officer | 100,062 | 2021-05-24 | M |
| Evens Deirdre | Director | 96,724 | 2022-03-29 | M |
| Kidd Mark | Officer | 95,507 | 2026-09-01 | S |
| McIntosh Greg W | Officer | 70,634 | 2026-10-01 | S |
| EBBIGHAUSEN HAROLD E | Officer | 68,733 | 2014-03-17 | A |
| DENINGER PAUL F | Director | 64,172 | 2021-03-24 | S |
| Tsolakis Anastasios | Officer | 62,099 | 2017-02-21 | M |
| Bhargava Mithu | Officer | 61,519 | 2026-03-19 | S |
| Duale Marc A | Officer | 61,374 | 2017-03-31 | M |
| MARSON DEBORAH | Officer | 59,686 | 2024-09-03 | S |
| BODEN CONSTANTIN R | Director | 52,280 | 2010-05-17 | S |
| CLANCY JOHN | Officer | 43,899 | 2009-08-21 | M |
| Arway Pamela M | Director | 40,196 | 2026-05-12 | S |
| Meaney William L | Director · Officer | 38,474 | 2026-10-01 | M |
| Drapeau Anne S | Officer | 35,073 | 2015-03-16 | M |
| HALVORSEN KRIS | Director | 34,458 | 2021-06-23 | S |
| VERRECCHIA ALFRED J | Director | 32,198 | 2020-06-02 | M |
| RUSSO FIDELMA | Director | 32,046 | 2020-03-13 | M |
| FORD MONTE E | Director | 31,817 | 2026-05-07 | A |
| Matlock Robin | Director | 30,451.189 | 2026-05-07 | A |
| Brown Stuart B | Officer | 26,651 | 2019-07-25 | M |
| Day Roderick | Officer | 24,306 | 2016-03-14 | M |
| Keddy Patrick J | Officer | 24,114 | 2019-09-05 | S |
| LAMACH MICHAEL W | Director | 24,030 | 2014-11-04 | A |
| Brennan Robert T | Director · Officer | 20,838 | 2011-03-11 | A |
| LITTLE ARTHUR D | Director | 17,235 | 2014-05-20 | M |
| Murdock Wendy J. | Director | 14,829 | 2024-09-17 | S |
| Tomovcsik John | Officer | 14,000 | 2024-08-19 | S |
| Allerton Jennifer | Director | 13,433 | 2026-05-07 | A |
| Tucker Laurie Anne | Director | 11,635 | 2013-06-06 | A |
| MacLean Theodore | Officer | 11,204 | 2019-04-22 | S |
| MCKEON BRIAN P | Director | 10,991 | 2013-06-07 | P |
| Chatfield Neil | Director | 10,357 | 2017-05-24 | A |
| ANTENUCCI TED R | Director | 9,786 | 2014-11-04 | A |
| Altamura Michelle Vervais | Officer | 8,085 | 2026-03-01 | M |
| Loren Allan Z | Director | 7,682 | 2012-11-21 | A |
| Baker-Greene Edward | Officer | 6,859 | 2024-12-19 | G |
| Felix June Yee | Director | 4,883 | 2026-05-07 | A |
| Jeffries Emma | Officer | 4,451 | 2018-10-29 | M |
| Fox Raymond | Officer | 4,071 | 2018-07-23 | M |
| Bicks Edward | Officer | 3,837 | 2019-04-15 | S |
| Kelly Christie B. | Director | 3,211.061 | 2026-05-07 | A |
| Samuels Theodore R. II | Director | 2,264 | 2023-07-17 | A |
| Sweeney Eileen | Officer | 2,104 | 2017-06-05 | S |
| Johns Jemma | Officer | 1,909 | 2026-01-02 | M |
| Simons Doyle | Director | 1,892 | 2026-05-07 | A |
| Maciel Andre | Officer | 1,627 | 2024-07-22 | A |
| ALLEN PETER A | Officer | 1,245 | 2018-10-17 | M |
| RAKOWICH WALTER C | Director | 1,135 | 2026-05-20 | S |
| Borges Daniel | Officer | 0 | 2026-05-21 | S |
| Venkata Ramana | Officer | 0 | 2009-11-18 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-06 | Samuels Theodore R. II | Grant / award (derivative) | 310.49 | $116.75 | 14,215.49 |
| 2026-10-02 | Samuels Theodore R. II | Grant / award (derivative) | 104.67 | $113.92 | 13,905 |
| 2026-10-02 | Simons Doyle | Grant / award (derivative) | 350.49 | $113.92 | 46,563.786 |
| 2026-10-01 | McIntosh Greg W | Open-market sale | 5,000 | $110.72 | 70,634 |
| 2026-10-01 | Meaney William L | Option exercise (derivative) | 38,474 | — | 76,948 |
| 2026-10-01 | Meaney William L | Open-market sale | 14,308 | $111.18 | 0 |
| 2026-10-01 | Meaney William L | Open-market sale | 10,808 | $110.56 | 14,308 |
| 2026-10-01 | Meaney William L | Open-market sale | 13,358 | $109.57 | 25,116 |
| 2026-10-01 | Meaney William L | Option exercise | 38,474 | $37.00 | 38,474 |
| 2026-09-01 | Kidd Mark | Open-market sale | 6,000 | $115.60 | 95,507 |
| 2026-09-01 | McIntosh Greg W | Open-market sale | 5,000 | $115.60 | 75,634 |
| 2026-09-01 | Meaney William L | Option exercise (derivative) | 38,474 | — | 115,422 |
| 2026-09-01 | Meaney William L | Open-market sale | 89 | $116.00 | 0 |
| 2026-09-01 | Meaney William L | Open-market sale | 6,101 | $115.00 | 89 |
| 2026-09-01 | Meaney William L | Open-market sale | 20,952 | $114.14 | 6,190 |
| 2026-09-01 | Meaney William L | Open-market sale | 11,332 | $113.45 | 27,142 |
| 2026-09-01 | Meaney William L | Option exercise | 38,474 | $37.00 | 38,474 |
| 2026-08-07 | Kidd Mark | Open-market sale | 6,000 | $122.70 | 101,507 |
| 2026-08-07 | Meaney William L | Option exercise (derivative) | 38,474 | — | 153,896 |
| 2026-08-07 | Meaney William L | Open-market sale | 2,909 | $122.75 | 0 |
| 2026-08-07 | Meaney William L | Open-market sale | 16,785 | $122.11 | 2,909 |
| 2026-08-07 | Meaney William L | Open-market sale | 18,780 | $121.10 | 19,694 |
| 2026-08-07 | Meaney William L | Option exercise | 38,474 | $37.00 | 38,474 |
| 2026-08-06 | McIntosh Greg W | Option exercise (derivative) | 6,839 | — | 0 |
| 2026-08-06 | McIntosh Greg W | Option exercise | 6,839 | $37.00 | 87,473 |
| 2026-08-06 | McIntosh Greg W | Open-market sale | 5,000 | $127.13 | 80,634 |
| 2026-07-06 | Samuels Theodore R. II | Grant / award (derivative) | 99.06 | $116.79 | 13,800.33 |
| 2026-07-06 | Simons Doyle | Grant / award (derivative) | 339.36 | $116.79 | 46,213.296 |
| 2026-07-02 | Samuels Theodore R. II | Grant / award (derivative) | 310.86 | $116.61 | 13,701.27 |
| 2026-07-01 | Kidd Mark | Open-market sale | 6,000 | $125.62 | 107,507 |
| 2026-07-01 | Meaney William L | Option exercise (derivative) | 38,474 | — | 192,370 |
| 2026-07-01 | Meaney William L | Open-market sale | 2,530 | $125.82 | 0 |
| 2026-07-01 | Meaney William L | Open-market sale | 1,601 | $124.72 | 2,530 |
| 2026-07-01 | Meaney William L | Open-market sale | 7,173 | $123.84 | 4,131 |
| 2026-07-01 | Meaney William L | Open-market sale | 9,656 | $122.84 | 11,304 |
| 2026-07-01 | Meaney William L | Open-market sale | 17,514 | $121.81 | 20,960 |
| 2026-07-01 | Meaney William L | Option exercise | 38,474 | $37.00 | 38,474 |
| 2026-06-01 | Kidd Mark | Open-market sale | 6,000 | $126.70 | 113,507 |
| 2026-06-01 | Meaney William L | Option exercise (derivative) | 38,474 | — | 230,844 |
| 2026-06-01 | Meaney William L | Open-market sale | 1,091 | $129.66 | 0 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.