Iron Mountain Officer Files Form 144 to Sell 5,000 Shares Under 10b5-1 Plan

Insider Filing Analysis: Iron Mountain Inc ($IRM) - Form 144

Transaction Overview

Officer Greg W. McIntosh has filed a Form 144 notice of proposed sale covering 5,000 shares of Iron Mountain Inc ($IRM) common stock with an aggregate market value of approximately $584,800.00 (~$116.96 per share). The filing lists November 2, 2026, as the approximate sale date through broker Fidelity Brokerage Services LLC.

Nature of Shares & Trading Plan

• Acquisition Background: The shares being offered were acquired on March 1, 2026, through restricted stock vesting as part of equity compensation from the issuer.
• Rule 10b5-1 Plan: The proposed sale is executed pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on May 8, 2026.

Historical Sales in Past 3 Months

Mr. McIntosh has engaged in consistent monthly liquidations under this plan:

• October 1, 2026: 5,000 shares for gross proceeds of $553,600.00
• September 1, 2026: 5,000 shares for gross proceeds of $578,000.00
• August 6, 2026: 11,839 shares for gross proceeds of $1,505,092.07

Market & Trading Significance

• Significance Assessment: Low
• Reasoning: The transaction represents a tiny fraction of the company's 297,702,812 shares outstanding. It follows a predictable schedule under a Rule 10b5-1 plan adopted months earlier, reflecting routine liquidity and portfolio rebalancing rather than an opportunistic signal regarding company fundamentals.