Form 4 for IRM Iron Mountain
Accepted 2026-03-03 00:00:00 ET · period of report 2026-03-01 · accession 0002039171-26-000004 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-03-03 | 2026-03-01 | IRM | Altamura Michelle Vervais | EVP, GC, Sec | M - OptEx | $0.00 | +2,963 | 7,156 | +71% | $0 |
| DM | 2026-03-03 | 2026-03-01 | IRM | Altamura Michelle Vervais | EVP, GC, Sec | F - Tax | $108.33 | -987 | 7,012 | -12% | -$106.9K |
| DM | 2026-03-03 | 2026-03-01 | IRM | Altamura Michelle Vervais | EVP, GC, Sec | M - OptEx | $0.00 | -2,963 | 2,146 | -58% | $0 |
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 | M | A | 1,073 | $0.00 | 8,085 | D | — | — | (F4) This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 1, 2025. |
| 2 | Common | Common Stock, par value $.01 per share | 2026-03-01 | M | A | 1,458 | $0.00 | 7,210 | D | — | — | (F1) This acquisition is reported to reflect the full vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on March 1, 2023. |
| 3 | Common | Common Stock, par value $.01 per share | 2026-03-01 | F | D | 486 | $108.33 | 6,724 | 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 RSUs and does not represent a sale. |
| 4 | Common | Common Stock, par value $.01 per share | 2026-03-01 | M | A | 432 | $0.00 | 7,156 | D | — | — | (F3) This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on March 1, 2024. |
| 5 | Common | Common Stock, par value $.01 per share | 2026-03-01 | F | D | 357 | $108.33 | 7,728 | 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 RSUs and does not represent a sale. |
| 6 | Common | Common Stock, par value $.01 per share | 2026-03-01 | F | D | 144 | $108.33 | 7,012 | 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 RSUs and does not represent a sale. |
| 7 | Derivative | Restricted Stock Units | 2026-03-01 | M | D | 1,458 | $0.00 | 0 | D | — · — to — | 1,458 Common Stock, par value $.01 per share | (F5) Each RSU represents a contingent right to receive one share of Common Stock. (F6) The RSUs, representing a contingent right to receive a total of 4,374 shares of Common Stock, were granted to the Reporting Person on March 1, 2023 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date. |
| 8 | Derivative | Restricted Stock Units | 2026-03-01 | M | D | 432 | $0.00 | 432 | D | — · — to — | 432 Common Stock, par value $.01 per share | (F5) Each RSU represents a contingent right to receive one share of Common Stock. (F7) The RSUs, representing a contingent right to receive a total of 1,295 shares of Common Stock, were granted to the Reporting Person on March 1, 2024 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date. |
| 9 | Derivative | Restricted Stock Units | 2026-03-01 | M | D | 1,073 | $0.00 | 2,146 | D | — · — to — | 1,073 Common Stock, par value $.01 per share | (F5) Each RSU represents a contingent right to receive one share of Common Stock. (F8) The RSUs, representing a contingent right to receive a total of 3,219 shares of Common Stock, were granted to the Reporting Person on March 1, 2025 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date. |