Form 4 for IRM Iron Mountain
Accepted 2026-03-03 00:00:00 ET · period of report 2026-03-01 · accession 0001566391-26-000008 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-03-03 | 2026-03-01 | IRM | Meaney William L | Pres, CEO, Dir | F - Tax | $108.33 | -256.0K | 394.6K | -39% | -$27.74M |
| DM | 2026-03-03 | 2026-03-02 | IRM | Meaney William L | Pres, CEO, Dir | S - Sale+OE | $109.39 | -137.1K | 296.0K | -32% | -$15.00M |
| DM | 2026-03-03 | 2026-03-01+ | IRM | Meaney William L | Pres, CEO, Dir | M - OptEx | $2.07 | +689.1K | 334.4K | New | +$1.42M |
| DM | 2026-03-03 | 2026-03-01+ | IRM | Meaney William L | Pres, CEO, Dir | M - OptEx | $0.00 | -689.1K | 346.3K | -67% | $0 |
| D | 2026-03-03 | 2026-03-01 | IRM | Meaney William L | Pres, CEO, Dir | A - Grant | — | +74.1K | 74.1K | New | — |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock, par value $.01 per share | 2026-03-01 | F | D | 256,040 | $108.33 | 394,634 | D | — | — | (F2) Represents the number of shares of Common Stock that have been withheld by the Issuer to satisfy its income tax withholding obligation in connection with the net settlement of the PUs and does not represent a sale. |
| 2 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 2,929 | $107.16 | 391,705 | D | — | — | (F4) The price reported in Column 4 is a weighted average price. These shares of the Company common stock ("Common Stock") were sold in multiple transactions at prices ranging from $106.65 to $107.64, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (4). |
| 3 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 13,778 | $108.27 | 377,927 | D | — | — | (F5) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.67 to $108.66, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (5). |
| 4 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 37,296 | $109.07 | 340,631 | D | — | — | (F6) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $108.67 to $109.66, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (6). |
| 5 | Common | Common Stock, par value $.01 per share | 2026-03-01 | M | A | 650,674 | $0.00 | 650,674 | D | — | — | (F1) This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on March 1, 2023. Effective February 16, 2026, the Compensation Committee of Iron Mountain Incorporated (the "Company")'s Board of Directors determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026. |
| 6 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 41,456 | $110.05 | 299,175 | D | — | — | (F7) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $109.68 to $110.58, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (7). |
| 7 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 3,200 | $110.74 | 295,975 | D | — | — | (F8) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $110.70 to $110.79, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (8). |
| 8 | Common | Common Stock, par value $.01 per share | 2026-03-02 | M | A | 38,474 | $37.00 | 334,449 | D | — | — | |
| 9 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 2,076 | $107.95 | 332,373 | D | — | — | (F9) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $107.35 to $108.35, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (9). |
| 10 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 16,457 | $108.91 | 315,916 | D | — | — | (F10) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $108.39 to $109.36, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (10). |
| 11 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 18,117 | $110.02 | 297,799 | D | — | — | (F11) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $109.40 to $110.40, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (11). |
| 12 | Common | Common Stock, par value $.01 per share | 2026-03-02 | S | D | 1,824 | $110.64 | 295,975 | D | — | — | (F12) The price reported in Column 4 is a weighted average price. These shares of Common Stock were sold in multiple transactions at prices ranging from $110.40 to $110.81, inclusive. The Reporting Person undertakes to provide the Company, any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares of Common Stock sold at each separate price within the ranges set forth in this footnote (12). |
| 13 | Derivative | Performance Units | 2026-03-01 | M | D | 650,674 | $0.00 | 0 | D | — · — to — | 650,674 Common Stock, par value $.01 per share | (F13) Each PU represents a contingent right to receive one share of Common Stock. (F14) The PUs were initially granted to the Reporting Person on March 1, 2023. Effective as of February 16, 2026, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs fully vested on March 1, 2026. |
| 14 | Derivative | Employee Stock Option (Right to Buy) | 2026-03-01 | A | A | 74,069 | — | 74,069 | D | $108.33 · — to — | 74,069 Common Stock, par value $.01 per share | (F16) Not applicable. (F15) This stock option becomes exercisable in three substantially equal annual installments beginning on the first anniversary of the date of grant. |
| 15 | Derivative | Employee Stock Option (Right to Buy) | 2026-03-02 | M | D | 38,474 | — | 346,266 | D | $37.00 · — to 2027-02-16 | 38,474 Common Stock, par value $.01 per share | (F16) Not applicable. (F17) This stock option, initially representing a right to purchase a total of 461,696 shares, is fully vested. |