RAKOWICH WALTER C 4

What Happened

• Walter C. Rakowich, a director of Iron Mountain Inc. (IRM), sold 757 shares in an open-market/ private sale on May 20, 2026. The shares were disposed at $124.45 per share for total proceeds of $94,209. The transaction is reported as a sale (S).

Key Details

• Transaction date and price: May 20, 2026 — 757 shares at $124.45 each.
• Total value: $94,209 (proceeds from sale).
• Shares owned after transaction: Not specified in this filing.
• Footnotes: (F1) Sale was made pursuant to a Rule 10b5-1 trading plan adopted June 12, 2024. (F2) Shares are held of record by the Rakowich Living Trust; Walter Rakowich is the sole trustee.
• Timeliness: Form filed May 21, 2026 for a May 20 transaction — appears timely (insider reports are generally due within two business days).

Context

• The sale was executed under a pre-established Rule 10b5-1 plan, which typically indicates the trade was pre-planned and may not reflect the insider’s current view of the company. Sales by directors are often routine; purchases generally carry more weight as a bullish signal.