IRON MOUNTAIN INC — Director's Dealing 2025

Jan 15, 2025

SEC Form 4/A — Form 4/A

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2023-07-17

Reporting Person: Samuels Theodore R. II (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-07-17	Phantom Stock	$	A	2264	Acquired		Common Stock (2264)	Direct

Footnotes

F1: On July 18, 2023, the Reporting Person filed a Form 4 which inadvertently included incorrect stock type due to an administrative error. This amendment is being filed solely to reflect the correct stock type "Phantom Stock" instead of "Common Stock."

F2: Pursuant to the Reporting Person's election to participate in the Iron Mountain Incorporated Directors Deferred Compensation Plan, the shares of phantom stock (the "Phantom Shares") will become payable in shares of Iron Mountain Incorporated common stock ("Common Stock") following the Reporting Person's disability or cessation of service as a director. Each Phantom Share is the economic equivalent of one share of Common Stock.