Kidd Mark plan to sell securities of IRON MOUNTAIN INC under Form 144

Kidd Mark filed Form 144 to notify SEC of plan to sell 6000 units of IRON MOUNTAIN INC securities around 2026-06-01, with aggregate market value of $760,200.00. The total outstanding units is 297524681.0. The amount planned to be sold represents 0.00% of total outstanding units; Recent transactions in past 3 months include: On 03/02/2026, sold 6000 units for $643620.00; On 04/01/2026, sold 6000 units for $616260.00; On 05/08/2026, sold 6000 units for $767460.00;