IRON MOUNTAIN INC — Director's Dealing 2020

Feb 20, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2020-02-18

Reporting Person: Tomovcsik John (EVP, Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2020-02-18	Common Stock, par value $.01 per share	M	1896	—	Acquired	65336	Direct
2020-02-18	Common Stock, par value $.01 per share	F	521	$34.06	Disposed	64815	Direct
2020-02-18	Common Stock, par value $.01 per share	M	2074	—	Acquired	66889	Direct
2020-02-18	Common Stock, par value $.01 per share	F	569	$34.06	Disposed	66320	Direct
2020-02-18	Common Stock, par value $.01 per share	M	9239	—	Acquired	75559	Direct
2020-02-18	Common Stock, par value $.01 per share	F	2652	$34.06	Disposed	72907	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2020-02-18	Restricted Stock Units	$	M	1896	Disposed		Common Stock (1896.0)	Direct
2020-02-18	Restricted Stock Units	$	M	2074	Disposed		Common Stock (2074.0)	Direct
2020-02-18	Performance Units	$	M	9239	Disposed		Common Stock (9239.0)	Direct

Footnotes

F1: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on February 16, 2017.

F2: Includes 381 shares acquired under the Iron Mountain Incorporated Employee Stock Purchase Plan since the last Section 16 filing by the Reporting Person.

F3: This acquisition is reported to reflect the partial vesting of RSUs previously granted to the Reporting Person on February 15, 2018.

F4: This acquisition is reported to reflect the full vesting of performance units ("PUs") previously granted to the Reporting Person on February 16, 2017. Effective February 13, 2020, the Compensation Committee of Iron Mountain Incorporated's Board of Directors (the "Compensation Committee") determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs vested in full on February 16, 2020.

F5: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F6: The RSUs, representing a contingent right to receive a total of 5,675 shares of Common Stock, were granted to the Reporting Person on February 16, 2017 and have vested in full.

F7: The RSUs, representing a contingent right to receive a total of 6,227 shares of Common Stock, were granted to the Reporting Person on February 15, 2018 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F8: Each PU represents a contingent right to receive one share of Common Stock.

F9: The PUs were initially granted to the Reporting Person on February 16, 2017. Effective February 13, 2020, the Compensation Committee determined the actual award of PUs under the grant after completion of the relevant performance period, and the PUs vested in full on February 16, 2020.