IRON MOUNTAIN INC — Director's Dealing 2018

Feb 20, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: IRON MOUNTAIN INC (IRM)
CIK: 0001020569
Period of Report: 2018-02-15

Reporting Person: MacLean Theodore (EVP, Adjacent Businesses)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-02-15	Common Stock, par value $.01 per share	S	1345	$33.43	Disposed	5839	Direct
2018-02-16	Common Stock, par value $.01 per share	M	1619	—	Acquired	7458	Direct
2018-02-16	Common Stock, par value $.01 per share	F	562	$33.17	Disposed	6896	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-02-15	Employee Stock Option (Right to Buy)	$33.72	A	24889	Acquired	2028-02-15	Common Stock (24889)	Direct
2018-02-15	Restricted Stock Units	$	A	5338	Acquired		Common Stock (5338)	Direct
2018-02-16	Restricted Stock Units	$	M	1619	Disposed		Common Stock (1619)	Direct

Footnotes

F1: This transaction was effected pursuant to a 10b5-1 trading plan which was approved and became effective as of September 7, 2017.

F2: This acquisition is reported to reflect the partial vesting of restricted stock units ("RSUs") previously granted to the Reporting Person on February 16, 2017.

F3: This stock option becomes exercisable in three substantially equal annual installments beginning on the first anniversary of the grant date.

F4: Each RSU represents a contingent right to receive one share of Iron Mountain Incorporated common stock ("Common Stock").

F5: The RSUs vest in three substantially equal annual installments beginning on the first anniversary of the grant date.

F6: The RSUs, representing a contingent right to receive a total of 4,864 shares of Common Stock, were granted to the Reporting Person on February 16, 2017 and vest in three substantially equal annual installments beginning on the first anniversary of the grant date.