IRON MOUNTAIN INC — Director's Dealing 2018

Feb 20, 2018

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2018-02-14

Reporting Person: Kidd Mark (SVP, GM Data Centers)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $.01 per share	1339	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Units	$		Common Stock (538)		Direct
Restricted Stock Units	$		Common Stock (1379)		Direct
Restricted Stock Units	$		Common Stock (6756)		Direct
Restricted Stock Units	$		Common Stock (2027)		Direct
Employee Stock Option (Right to Buy)	$24.80	2024-02-13	Common Stock (1376)		Direct
Employee Stock Option (Right to Buy)	$38.83	2025-02-19	Common Stock (4458)		Direct
Employee Stock Option (Right to Buy)	$31.46	2026-03-09	Common Stock (7306)		Direct
Employee Stock Option (Right to Buy)	$37.00	2027-02-16	Common Stock (6839)		Direct

Footnotes

F1: The restricted stock units ("RSUs"), representing a contingent right to receive a total of 1,609 shares of Iron Mountain Incorporated common stock ("Common Stock"), were granted to the Reporting Person on February 19, 2015. As of February 14, 2018, 1,071 of the granted RSUs have vested, and the balance of the RSUs vest on February 19, 2018.

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 2,066 shares of Common Stock, were granted to the Reporting Person on March 9, 2016. As of February 14, 2018, 687 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 6,756 shares of Common Stock, were granted to the Reporting Person on February 16, 2017. As of February 14, 2018, none of the RSUs have vested, and the RSUs vest 25% on the second anniversary of the grant date, 25% on the third anniversary of the grant date and 50% on the fourth anniversary of the grant date.

F5: The RSUs, representing a contingent right to receive a total of 2,027 shares of Common Stock, were granted to the Reporting Person on February 16, 2017. As of February 14, 2018, none of the RSUs have vested, and the RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6: This stock option was granted on February 13, 2014. As of February 14, 2018, this stock option has fully vested and has been exercised with respect to 2,743 shares out of 4,119 shares originally granted.

F7: This stock option was granted on February 19, 2015. As of February 14, 2018, this stock option has vested with respect to 2,969 shares. The remaining shares vest on the third anniversary of the grant date.

F8: This stock option was granted on March 9, 2016. As of February 14, 2018, this stock option has vested with respect to 2,432 shares. The remaining shares vest in two substantially equal annual installments beginning on the second anniversary of the grant date.

F9: This stock option was granted on February 16, 2017. As of February 14, 2018, this stock option will vest in three substantially equal annual installments beginning on the first anniversary of the grant date.