Kelly Christie B. 4

What Happened

• Kelly Christie, a director of Iron Mountain Inc. (IRM), was granted and acquired 1,892 shares via restricted stock units (RSUs) on May 7, 2026. The acquisition price is reported as $0.00; the RSUs vest in their entirety on the grant date, so the shares were effectively received immediately.

Key Details

• Transaction date: 2026-05-07; Transaction type: Award/Grant (code A); Price: $0.00.
• Shares acquired: 1,892 RSU-settled shares.
• Footnote F1: These shares are issuable upon settlement of RSUs granted May 7, 2026, and vest in full on the grant date.
• Footnote F2: The total includes 11.061 shares from accrued dividends via dividend reinvestment (exempt under Rule 16a-11).
• Shares owned after the transaction: not disclosed in the provided filing excerpt.
• Filing date: 2026-05-11 — the Form 4 was filed four days after the transaction (Form 4 is typically required within two business days), so this appears to be a late filing.

Context

• This was an award/settlement of RSUs that vested immediately rather than a market purchase or sale; such awards are compensatory and do not, by themselves, signal a buy or sell decision by the insider. The small block of shares from dividend reinvestment is common and noted as exempt under Rule 16a-11.