Iron Mountain Inc (IRM) dividend history and payment record
Iron Mountain Inc pays dividends quarterly. We hold 69 payments for it, going back to March 2010 — the full record is below, with what it has paid and when. We don't publish a predicted next ex-dividend date for IRM. As soon as the company declares one it will appear at the top of this page; until then the record below is what we hold.
IRM dividend at a glance
| Most recent payment | $0.864 per share, June 15, 2026 |
|---|---|
| Indicated annual dividend | $3.456 per share, at the current rate and cadence |
| Payment frequency | Quarterly |
| Change over the past year | Raised 10.1%, from $0.785 to $0.864 |
| 5-year growth rate | 6.9% a year, compounded ($0.619 → $0.864) |
| Consecutive years of increases | 3, in the record we hold |
| Typical time to payment | Paid about 20 days after the ex-date |
| History on file | 69 payments since March 2010 |
Iron Mountain Inc's dividend schedule
Iron Mountain Inc has paid quarterly across the 16 years of records we hold, with the most recent ex-date on June 15, 2026. Its ex-dates usually land in the middle of the month.
Payment follows the ex-date by about 20 days, based on the announcements we hold for IRM.
The most recent increase was 10.1%, from $0.785 to $0.864, effective with the December 2025 ex-date.
IRM dividend history
The last 16 payments on record, of 69 going back to March 2010.
| Ex-date | Amount |
|---|---|
| Jun 15, 2026 | $0.864 |
| Mar 16, 2026 | $0.864 |
| Dec 15, 2025 | $0.864 |
| Sep 15, 2025 | $0.785 |
| Jun 16, 2025 | $0.785 |
| Mar 17, 2025 | $0.785 |
| Dec 16, 2024 | $0.715 |
| Sep 16, 2024 | $0.715 |
| Jun 17, 2024 | $0.65 |
| Mar 14, 2024 | $0.65 |
| Dec 14, 2023 | $0.65 |
| Sep 14, 2023 | $0.65 |
| Jun 14, 2023 | $0.619 |
| Mar 14, 2023 | $0.619 |
| Dec 14, 2022 | $0.619 |
| Sep 14, 2022 | $0.619 |
Amounts are per share as reported on each ex-date, and are not restated for later share splits — a split shows up here as a step down in the per-share amount. Shown for schedule context, not as a yield.
Special dividends
Payments well outside IRM's regular rate. These are one-offs — they are excluded from the growth figures above, and they are not assumed to recur, so they do not feed the predicted dates.
| Ex-date | Amount |
|---|---|
| Oct 18, 2012 | $4.07 |
Frequently asked questions
- Do I need to own IRM before the ex-dividend date?
- Yes. You must already hold the shares when trading opens on the ex-dividend date to receive the payment. Buying on the ex-date itself is too late — the seller keeps that dividend. See ex-date vs record date vs payment date for how the dates fit together.
- How often does IRM pay a dividend?
- Iron Mountain Inc has historically paid quarterly, across 69 payments since March 2010.
- How much does IRM pay per share?
- The most recent payment was $0.864 per share, with an ex-date of June 15, 2026. At that rate and frequency the indicated annual dividend is $3.456 a share. This is the cash amount, not a yield — a yield depends on the share price you pay.