Greg McIntosh - Oct 1, 2021 Form 3 Insider Report for IRON MOUNTAIN INC (IRM)

Role: EVP, GM, Global RM
Signature: /s/ Elizabeth Tammaro, under Power of Attorney dated February 26, 2019 from Greg McIntosh
Stock symbol: IRM
Transactions as of: Oct 1, 2021
Transactions value $: $0
Form type: 3
Date filed: 10/8/2021, 05:07 PM
Next filing: Feb 24, 2022

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	IRM	Common Stock, par value $.01 per share						5.84K	Oct 1, 2021	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	IRM	Restricted Stock Units							Oct 1, 2021	Common Stock	2.28K		Direct	F1, F2
holding	IRM	Restricted Stock Units							Oct 1, 2021	Common Stock	3.55K		Direct	F2, F3
holding	IRM	Restricted Stock Units							Oct 1, 2021	Common Stock	11.8K		Direct	F2, F4
holding	IRM	Employee Stock Option (Right to Buy)							Oct 1, 2021	Common Stock	3.92K	$38.83	Direct	F5
holding	IRM	Employee Stock Option (Right to Buy)							Oct 1, 2021	Common Stock	6.74K	$31.46	Direct	F6
holding	IRM	Employee Stock Option (Right to Buy)							Oct 1, 2021	Common Stock	6.84K	$37.00	Direct	F7
holding	IRM	Employee Stock Option (Right to Buy)							Oct 1, 2021	Common Stock	4.01K	$33.72	Direct	F8
holding	IRM	Employee Stock Option (Right to Buy)							Oct 1, 2021	Common Stock	13.4K	$35.17	Direct	F9

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The restricted stock units ("RSUs"), representing a contingent right to receive a total of 6,822 shares of Iron Mountain Incorporated common stock ("Common Stock"), were granted to the Reporting Person on March 25, 2019. As of October 1, 2021, 4,547 of the granted RSUs have vested, and the balance of the RSUs vest on March 25, 2022.
F2	Each RSU represents a contingent right to receive one share of Common Stock.
F3	The RSUs, representing a contingent right to receive a total of 5,325 shares of Common Stock, were granted to the Reporting Person on February 19, 2020. As of October 1, 2021, 1,775 of the granted RSUs have vested, and the balance of the RSUs vest in two substantially equal annual installments beginning on the second anniversary of the grant date.
F4	The RSUs, representing a contingent right to receive a total of 11,805 shares of Common Stock, were granted to the Reporting Person on March 1, 2021. As of October 1, 2021, 0 granted RSUs have vested. The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.
F5	This stock option was granted on February 19, 2015. As of October 1, 2021, this stock option is fully vested.
F6	This stock option was granted on March 9, 2016. As of October 1, 2021, this stock option is fully vested.
F7	This stock option was granted on February 16, 2017. As of October 1, 2021, this stock option is fully vested.
F8	This stock option was granted on February 15, 2018. As of October 1, 2021, this stock option is fully vested.
F9	This stock option was granted on March 25, 2019. As of October 1, 2021, this stock option has vested with respect to 8,961 shares. The remaining shares vest on the third anniversary of the grant date.